statistics

backend/src/main/java/com/storycove/controller/LibraryStatisticsController.java

@@ -42,6 +42,132 @@ public class LibraryStatisticsController {
         }
     }
 
+    /**
+     * Get top tags statistics
+     */
+    @GetMapping("/top-tags")
+    public ResponseEntity<?> getTopTagsStatistics(
+            @PathVariable String libraryId,
+            @RequestParam(defaultValue = "20") int limit) {
+        try {
+            if (libraryService.getLibraryById(libraryId) == null) {
+                return ResponseEntity.notFound().build();
+            }
+
+            var stats = statisticsService.getTopTagsStatistics(libraryId, limit);
+            return ResponseEntity.ok(stats);
+
+        } catch (Exception e) {
+            logger.error("Failed to get top tags statistics for library: {}", libraryId, e);
+            return ResponseEntity.internalServerError()
+                    .body(new ErrorResponse("Failed to retrieve statistics: " + e.getMessage()));
+        }
+    }
+
+    /**
+     * Get top authors statistics
+     */
+    @GetMapping("/top-authors")
+    public ResponseEntity<?> getTopAuthorsStatistics(
+            @PathVariable String libraryId,
+            @RequestParam(defaultValue = "10") int limit) {
+        try {
+            if (libraryService.getLibraryById(libraryId) == null) {
+                return ResponseEntity.notFound().build();
+            }
+
+            var stats = statisticsService.getTopAuthorsStatistics(libraryId, limit);
+            return ResponseEntity.ok(stats);
+
+        } catch (Exception e) {
+            logger.error("Failed to get top authors statistics for library: {}", libraryId, e);
+            return ResponseEntity.internalServerError()
+                    .body(new ErrorResponse("Failed to retrieve statistics: " + e.getMessage()));
+        }
+    }
+
+    /**
+     * Get rating statistics
+     */
+    @GetMapping("/ratings")
+    public ResponseEntity<?> getRatingStatistics(@PathVariable String libraryId) {
+        try {
+            if (libraryService.getLibraryById(libraryId) == null) {
+                return ResponseEntity.notFound().build();
+            }
+
+            var stats = statisticsService.getRatingStatistics(libraryId);
+            return ResponseEntity.ok(stats);
+
+        } catch (Exception e) {
+            logger.error("Failed to get rating statistics for library: {}", libraryId, e);
+            return ResponseEntity.internalServerError()
+                    .body(new ErrorResponse("Failed to retrieve statistics: " + e.getMessage()));
+        }
+    }
+
+    /**
+     * Get source domain statistics
+     */
+    @GetMapping("/source-domains")
+    public ResponseEntity<?> getSourceDomainStatistics(
+            @PathVariable String libraryId,
+            @RequestParam(defaultValue = "10") int limit) {
+        try {
+            if (libraryService.getLibraryById(libraryId) == null) {
+                return ResponseEntity.notFound().build();
+            }
+
+            var stats = statisticsService.getSourceDomainStatistics(libraryId, limit);
+            return ResponseEntity.ok(stats);
+
+        } catch (Exception e) {
+            logger.error("Failed to get source domain statistics for library: {}", libraryId, e);
+            return ResponseEntity.internalServerError()
+                    .body(new ErrorResponse("Failed to retrieve statistics: " + e.getMessage()));
+        }
+    }
+
+    /**
+     * Get reading progress statistics
+     */
+    @GetMapping("/reading-progress")
+    public ResponseEntity<?> getReadingProgressStatistics(@PathVariable String libraryId) {
+        try {
+            if (libraryService.getLibraryById(libraryId) == null) {
+                return ResponseEntity.notFound().build();
+            }
+
+            var stats = statisticsService.getReadingProgressStatistics(libraryId);
+            return ResponseEntity.ok(stats);
+
+        } catch (Exception e) {
+            logger.error("Failed to get reading progress statistics for library: {}", libraryId, e);
+            return ResponseEntity.internalServerError()
+                    .body(new ErrorResponse("Failed to retrieve statistics: " + e.getMessage()));
+        }
+    }
+
+    /**
+     * Get reading activity statistics (last week)
+     */
+    @GetMapping("/reading-activity")
+    public ResponseEntity<?> getReadingActivityStatistics(@PathVariable String libraryId) {
+        try {
+            if (libraryService.getLibraryById(libraryId) == null) {
+                return ResponseEntity.notFound().build();
+            }
+
+            var stats = statisticsService.getReadingActivityStatistics(libraryId);
+            return ResponseEntity.ok(stats);
+
+        } catch (Exception e) {
+            logger.error("Failed to get reading activity statistics for library: {}", libraryId, e);
+            return ResponseEntity.internalServerError()
+                    .body(new ErrorResponse("Failed to retrieve statistics: " + e.getMessage()));
+        }
+    }
+
     // Error response DTO
     private static class ErrorResponse {
         private String error;

backend/src/main/java/com/storycove/dto/RatingStatsDto.java

@@ -0,0 +1,45 @@
+package com.storycove.dto;
+
+import java.util.Map;
+
+public class RatingStatsDto {
+    private double averageRating;
+    private long totalRatedStories;
+    private long totalUnratedStories;
+    private Map<Integer, Long> ratingDistribution; // rating (1-5) -> count
+
+    public RatingStatsDto() {
+    }
+
+    public double getAverageRating() {
+        return averageRating;
+    }
+
+    public void setAverageRating(double averageRating) {
+        this.averageRating = averageRating;
+    }
+
+    public long getTotalRatedStories() {
+        return totalRatedStories;
+    }
+
+    public void setTotalRatedStories(long totalRatedStories) {
+        this.totalRatedStories = totalRatedStories;
+    }
+
+    public long getTotalUnratedStories() {
+        return totalUnratedStories;
+    }
+
+    public void setTotalUnratedStories(long totalUnratedStories) {
+        this.totalUnratedStories = totalUnratedStories;
+    }
+
+    public Map<Integer, Long> getRatingDistribution() {
+        return ratingDistribution;
+    }
+
+    public void setRatingDistribution(Map<Integer, Long> ratingDistribution) {
+        this.ratingDistribution = ratingDistribution;
+    }
+}

backend/src/main/java/com/storycove/dto/ReadingActivityStatsDto.java

@@ -0,0 +1,84 @@
+package com.storycove.dto;
+
+import java.util.List;
+
+public class ReadingActivityStatsDto {
+    private long storiesReadLastWeek;
+    private long wordsReadLastWeek;
+    private long readingTimeMinutesLastWeek;
+    private List<DailyActivityDto> dailyActivity;
+
+    public ReadingActivityStatsDto() {
+    }
+
+    public long getStoriesReadLastWeek() {
+        return storiesReadLastWeek;
+    }
+
+    public void setStoriesReadLastWeek(long storiesReadLastWeek) {
+        this.storiesReadLastWeek = storiesReadLastWeek;
+    }
+
+    public long getWordsReadLastWeek() {
+        return wordsReadLastWeek;
+    }
+
+    public void setWordsReadLastWeek(long wordsReadLastWeek) {
+        this.wordsReadLastWeek = wordsReadLastWeek;
+    }
+
+    public long getReadingTimeMinutesLastWeek() {
+        return readingTimeMinutesLastWeek;
+    }
+
+    public void setReadingTimeMinutesLastWeek(long readingTimeMinutesLastWeek) {
+        this.readingTimeMinutesLastWeek = readingTimeMinutesLastWeek;
+    }
+
+    public List<DailyActivityDto> getDailyActivity() {
+        return dailyActivity;
+    }
+
+    public void setDailyActivity(List<DailyActivityDto> dailyActivity) {
+        this.dailyActivity = dailyActivity;
+    }
+
+    public static class DailyActivityDto {
+        private String date; // YYYY-MM-DD format
+        private long storiesRead;
+        private long wordsRead;
+
+        public DailyActivityDto() {
+        }
+
+        public DailyActivityDto(String date, long storiesRead, long wordsRead) {
+            this.date = date;
+            this.storiesRead = storiesRead;
+            this.wordsRead = wordsRead;
+        }
+
+        public String getDate() {
+            return date;
+        }
+
+        public void setDate(String date) {
+            this.date = date;
+        }
+
+        public long getStoriesRead() {
+            return storiesRead;
+        }
+
+        public void setStoriesRead(long storiesRead) {
+            this.storiesRead = storiesRead;
+        }
+
+        public long getWordsRead() {
+            return wordsRead;
+        }
+
+        public void setWordsRead(long wordsRead) {
+            this.wordsRead = wordsRead;
+        }
+    }
+}

backend/src/main/java/com/storycove/dto/ReadingProgressStatsDto.java

@@ -0,0 +1,61 @@
+package com.storycove.dto;
+
+public class ReadingProgressStatsDto {
+    private long totalStories;
+    private long readStories;
+    private long unreadStories;
+    private double percentageRead;
+    private long totalWordsRead;
+    private long totalWordsUnread;
+
+    public ReadingProgressStatsDto() {
+    }
+
+    public long getTotalStories() {
+        return totalStories;
+    }
+
+    public void setTotalStories(long totalStories) {
+        this.totalStories = totalStories;
+    }
+
+    public long getReadStories() {
+        return readStories;
+    }
+
+    public void setReadStories(long readStories) {
+        this.readStories = readStories;
+    }
+
+    public long getUnreadStories() {
+        return unreadStories;
+    }
+
+    public void setUnreadStories(long unreadStories) {
+        this.unreadStories = unreadStories;
+    }
+
+    public double getPercentageRead() {
+        return percentageRead;
+    }
+
+    public void setPercentageRead(double percentageRead) {
+        this.percentageRead = percentageRead;
+    }
+
+    public long getTotalWordsRead() {
+        return totalWordsRead;
+    }
+
+    public void setTotalWordsRead(long totalWordsRead) {
+        this.totalWordsRead = totalWordsRead;
+    }
+
+    public long getTotalWordsUnread() {
+        return totalWordsUnread;
+    }
+
+    public void setTotalWordsUnread(long totalWordsUnread) {
+        this.totalWordsUnread = totalWordsUnread;
+    }
+}

backend/src/main/java/com/storycove/dto/SourceDomainStatsDto.java

@@ -0,0 +1,65 @@
+package com.storycove.dto;
+
+import java.util.List;
+
+public class SourceDomainStatsDto {
+    private List<DomainStatsDto> topDomains;
+    private long storiesWithSource;
+    private long storiesWithoutSource;
+
+    public SourceDomainStatsDto() {
+    }
+
+    public List<DomainStatsDto> getTopDomains() {
+        return topDomains;
+    }
+
+    public void setTopDomains(List<DomainStatsDto> topDomains) {
+        this.topDomains = topDomains;
+    }
+
+    public long getStoriesWithSource() {
+        return storiesWithSource;
+    }
+
+    public void setStoriesWithSource(long storiesWithSource) {
+        this.storiesWithSource = storiesWithSource;
+    }
+
+    public long getStoriesWithoutSource() {
+        return storiesWithoutSource;
+    }
+
+    public void setStoriesWithoutSource(long storiesWithoutSource) {
+        this.storiesWithoutSource = storiesWithoutSource;
+    }
+
+    public static class DomainStatsDto {
+        private String domain;
+        private long storyCount;
+
+        public DomainStatsDto() {
+        }
+
+        public DomainStatsDto(String domain, long storyCount) {
+            this.domain = domain;
+            this.storyCount = storyCount;
+        }
+
+        public String getDomain() {
+            return domain;
+        }
+
+        public void setDomain(String domain) {
+            this.domain = domain;
+        }
+
+        public long getStoryCount() {
+            return storyCount;
+        }
+
+        public void setStoryCount(long storyCount) {
+            this.storyCount = storyCount;
+        }
+    }
+}

backend/src/main/java/com/storycove/dto/TopAuthorsStatsDto.java

@@ -0,0 +1,76 @@
+package com.storycove.dto;
+
+import java.util.List;
+
+public class TopAuthorsStatsDto {
+    private List<AuthorStatsDto> topAuthorsByStories;
+    private List<AuthorStatsDto> topAuthorsByWords;
+
+    public TopAuthorsStatsDto() {
+    }
+
+    public List<AuthorStatsDto> getTopAuthorsByStories() {
+        return topAuthorsByStories;
+    }
+
+    public void setTopAuthorsByStories(List<AuthorStatsDto> topAuthorsByStories) {
+        this.topAuthorsByStories = topAuthorsByStories;
+    }
+
+    public List<AuthorStatsDto> getTopAuthorsByWords() {
+        return topAuthorsByWords;
+    }
+
+    public void setTopAuthorsByWords(List<AuthorStatsDto> topAuthorsByWords) {
+        this.topAuthorsByWords = topAuthorsByWords;
+    }
+
+    public static class AuthorStatsDto {
+        private String authorId;
+        private String authorName;
+        private long storyCount;
+        private long totalWords;
+
+        public AuthorStatsDto() {
+        }
+
+        public AuthorStatsDto(String authorId, String authorName, long storyCount, long totalWords) {
+            this.authorId = authorId;
+            this.authorName = authorName;
+            this.storyCount = storyCount;
+            this.totalWords = totalWords;
+        }
+
+        public String getAuthorId() {
+            return authorId;
+        }
+
+        public void setAuthorId(String authorId) {
+            this.authorId = authorId;
+        }
+
+        public String getAuthorName() {
+            return authorName;
+        }
+
+        public void setAuthorName(String authorName) {
+            this.authorName = authorName;
+        }
+
+        public long getStoryCount() {
+            return storyCount;
+        }
+
+        public void setStoryCount(long storyCount) {
+            this.storyCount = storyCount;
+        }
+
+        public long getTotalWords() {
+            return totalWords;
+        }
+
+        public void setTotalWords(long totalWords) {
+            this.totalWords = totalWords;
+        }
+    }
+}

backend/src/main/java/com/storycove/dto/TopTagsStatsDto.java

@@ -0,0 +1,51 @@
+package com.storycove.dto;
+
+import java.util.List;
+
+public class TopTagsStatsDto {
+    private List<TagStatsDto> topTags;
+
+    public TopTagsStatsDto() {
+    }
+
+    public TopTagsStatsDto(List<TagStatsDto> topTags) {
+        this.topTags = topTags;
+    }
+
+    public List<TagStatsDto> getTopTags() {
+        return topTags;
+    }
+
+    public void setTopTags(List<TagStatsDto> topTags) {
+        this.topTags = topTags;
+    }
+
+    public static class TagStatsDto {
+        private String tagName;
+        private long storyCount;
+
+        public TagStatsDto() {
+        }
+
+        public TagStatsDto(String tagName, long storyCount) {
+            this.tagName = tagName;
+            this.storyCount = storyCount;
+        }
+
+        public String getTagName() {
+            return tagName;
+        }
+
+        public void setTagName(String tagName) {
+            this.tagName = tagName;
+        }
+
+        public long getStoryCount() {
+            return storyCount;
+        }
+
+        public void setStoryCount(long storyCount) {
+            this.storyCount = storyCount;
+        }
+    }
+}

backend/src/main/java/com/storycove/service/LibraryStatisticsService.java

@@ -1,8 +1,9 @@
 package com.storycove.service;
 
 import com.storycove.config.SolrProperties;
-import com.storycove.dto.LibraryOverviewStatsDto;
+import com.storycove.dto.*;
 import com.storycove.dto.LibraryOverviewStatsDto.StoryWordCountDto;
+import com.storycove.repository.CollectionRepository;
 import org.apache.solr.client.solrj.SolrClient;
 import org.apache.solr.client.solrj.SolrQuery;
 import org.apache.solr.client.solrj.SolrServerException;
@@ -17,7 +18,12 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.stereotype.Service;
 
 import java.io.IOException;
-import java.util.Map;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+import java.util.*;
+import java.util.stream.Collectors;
 
 @Service
 @ConditionalOnProperty(
@@ -39,6 +45,9 @@ public class LibraryStatisticsService {
     @Autowired
     private LibraryService libraryService;
 
+    @Autowired
+    private CollectionRepository collectionRepository;
+
     /**
      * Get overview statistics for a library
      */
@@ -133,13 +142,9 @@ public class LibraryStatisticsService {
     /**
      * Get total number of collections
      */
-    private long getTotalCollections(String libraryId) throws IOException, SolrServerException {
-        SolrQuery query = new SolrQuery("*:*");
-        query.addFilterQuery("libraryId:" + libraryId);
-        query.setRows(0);
-
-        QueryResponse response = solrClient.query(properties.getCores().getCollections(), query);
-        return response.getResults().getNumFound();
+    private long getTotalCollections(String libraryId) {
+        // Collections are stored in the database, not indexed in Solr
+        return collectionRepository.countByIsArchivedFalse();
     }
 
     /**
@@ -254,4 +259,385 @@ public class LibraryStatisticsService {
         long sum = 0;
         double mean = 0.0;
     }
+
+    /**
+     * Get top tags statistics
+     */
+    public TopTagsStatsDto getTopTagsStatistics(String libraryId, int limit) throws IOException, SolrServerException {
+        SolrQuery query = new SolrQuery("*:*");
+        query.addFilterQuery("libraryId:" + libraryId);
+        query.setRows(0);
+        query.setFacet(true);
+        query.addFacetField("tagNames");
+        query.setFacetLimit(limit);
+        query.setFacetSort("count"); // Sort by count (most popular first)
+
+        QueryResponse response = solrClient.query(properties.getCores().getStories(), query);
+        FacetField tagsFacet = response.getFacetField("tagNames");
+
+        List<TopTagsStatsDto.TagStatsDto> topTags = new ArrayList<>();
+        if (tagsFacet != null && tagsFacet.getValues() != null) {
+            for (FacetField.Count count : tagsFacet.getValues()) {
+                topTags.add(new TopTagsStatsDto.TagStatsDto(count.getName(), count.getCount()));
+            }
+        }
+
+        return new TopTagsStatsDto(topTags);
+    }
+
+    /**
+     * Get top authors statistics
+     */
+    public TopAuthorsStatsDto getTopAuthorsStatistics(String libraryId, int limit) throws IOException, SolrServerException {
+        TopAuthorsStatsDto stats = new TopAuthorsStatsDto();
+
+        // Top authors by story count
+        stats.setTopAuthorsByStories(getTopAuthorsByStoryCount(libraryId, limit));
+
+        // Top authors by total words
+        stats.setTopAuthorsByWords(getTopAuthorsByWordCount(libraryId, limit));
+
+        return stats;
+    }
+
+    private List<TopAuthorsStatsDto.AuthorStatsDto> getTopAuthorsByStoryCount(String libraryId, int limit)
+            throws IOException, SolrServerException {
+        SolrQuery query = new SolrQuery("*:*");
+        query.addFilterQuery("libraryId:" + libraryId);
+        query.setRows(0);
+        query.setFacet(true);
+        query.addFacetField("authorId");
+        query.setFacetLimit(limit);
+        query.setFacetSort("count");
+
+        QueryResponse response = solrClient.query(properties.getCores().getStories(), query);
+        FacetField authorFacet = response.getFacetField("authorId");
+
+        List<TopAuthorsStatsDto.AuthorStatsDto> topAuthors = new ArrayList<>();
+        if (authorFacet != null && authorFacet.getValues() != null) {
+            for (FacetField.Count count : authorFacet.getValues()) {
+                String authorId = count.getName();
+                long storyCount = count.getCount();
+
+                // Get author name and total words
+                SolrQuery authorQuery = new SolrQuery("authorId:" + authorId);
+                authorQuery.addFilterQuery("libraryId:" + libraryId);
+                authorQuery.setRows(1);
+                authorQuery.setFields("authorName");
+
+                QueryResponse authorResponse = solrClient.query(properties.getCores().getStories(), authorQuery);
+                String authorName = "";
+                if (!authorResponse.getResults().isEmpty()) {
+                    authorName = (String) authorResponse.getResults().get(0).getFieldValue("authorName");
+                }
+
+                // Get total words for this author
+                long totalWords = getAuthorTotalWords(libraryId, authorId);
+
+                topAuthors.add(new TopAuthorsStatsDto.AuthorStatsDto(authorId, authorName, storyCount, totalWords));
+            }
+        }
+
+        return topAuthors;
+    }
+
+    private List<TopAuthorsStatsDto.AuthorStatsDto> getTopAuthorsByWordCount(String libraryId, int limit)
+            throws IOException, SolrServerException {
+        // First get all unique authors
+        SolrQuery query = new SolrQuery("*:*");
+        query.addFilterQuery("libraryId:" + libraryId);
+        query.setRows(0);
+        query.setFacet(true);
+        query.addFacetField("authorId");
+        query.setFacetLimit(-1); // Get all authors
+        query.setFacetSort("count");
+
+        QueryResponse response = solrClient.query(properties.getCores().getStories(), query);
+        FacetField authorFacet = response.getFacetField("authorId");
+
+        List<TopAuthorsStatsDto.AuthorStatsDto> allAuthors = new ArrayList<>();
+        if (authorFacet != null && authorFacet.getValues() != null) {
+            for (FacetField.Count count : authorFacet.getValues()) {
+                String authorId = count.getName();
+                long storyCount = count.getCount();
+
+                // Get author name
+                SolrQuery authorQuery = new SolrQuery("authorId:" + authorId);
+                authorQuery.addFilterQuery("libraryId:" + libraryId);
+                authorQuery.setRows(1);
+                authorQuery.setFields("authorName");
+
+                QueryResponse authorResponse = solrClient.query(properties.getCores().getStories(), authorQuery);
+                String authorName = "";
+                if (!authorResponse.getResults().isEmpty()) {
+                    authorName = (String) authorResponse.getResults().get(0).getFieldValue("authorName");
+                }
+
+                // Get total words for this author
+                long totalWords = getAuthorTotalWords(libraryId, authorId);
+
+                allAuthors.add(new TopAuthorsStatsDto.AuthorStatsDto(authorId, authorName, storyCount, totalWords));
+            }
+        }
+
+        // Sort by total words and return top N
+        return allAuthors.stream()
+                .sorted(Comparator.comparingLong(TopAuthorsStatsDto.AuthorStatsDto::getTotalWords).reversed())
+                .limit(limit)
+                .collect(Collectors.toList());
+    }
+
+    private long getAuthorTotalWords(String libraryId, String authorId) throws IOException, SolrServerException {
+        SolrQuery query = new SolrQuery("authorId:" + authorId);
+        query.addFilterQuery("libraryId:" + libraryId);
+        query.setRows(0);
+        query.setParam(StatsParams.STATS, true);
+        query.setParam(StatsParams.STATS_FIELD, "wordCount");
+
+        QueryResponse response = solrClient.query(properties.getCores().getStories(), query);
+
+        var fieldStatsInfo = response.getFieldStatsInfo();
+        if (fieldStatsInfo != null && fieldStatsInfo.get("wordCount") != null) {
+            var fieldStat = fieldStatsInfo.get("wordCount");
+            Object sumObj = fieldStat.getSum();
+            return (sumObj != null) ? ((Number) sumObj).longValue() : 0L;
+        }
+
+        return 0L;
+    }
+
+    /**
+     * Get rating statistics
+     */
+    public RatingStatsDto getRatingStatistics(String libraryId) throws IOException, SolrServerException {
+        RatingStatsDto stats = new RatingStatsDto();
+
+        // Get average rating using stats component
+        SolrQuery query = new SolrQuery("*:*");
+        query.addFilterQuery("libraryId:" + libraryId);
+        query.addFilterQuery("rating:[* TO *]"); // Only rated stories
+        query.setRows(0);
+        query.setParam(StatsParams.STATS, true);
+        query.setParam(StatsParams.STATS_FIELD, "rating");
+
+        QueryResponse response = solrClient.query(properties.getCores().getStories(), query);
+        long totalRated = response.getResults().getNumFound();
+
+        var fieldStatsInfo = response.getFieldStatsInfo();
+        if (fieldStatsInfo != null && fieldStatsInfo.get("rating") != null) {
+            var fieldStat = fieldStatsInfo.get("rating");
+            Object meanObj = fieldStat.getMean();
+            stats.setAverageRating((meanObj != null) ? ((Number) meanObj).doubleValue() : 0.0);
+        }
+
+        stats.setTotalRatedStories(totalRated);
+
+        // Get total stories to calculate unrated
+        long totalStories = getTotalStories(libraryId);
+        stats.setTotalUnratedStories(totalStories - totalRated);
+
+        // Get rating distribution using faceting
+        SolrQuery distQuery = new SolrQuery("*:*");
+        distQuery.addFilterQuery("libraryId:" + libraryId);
+        distQuery.addFilterQuery("rating:[* TO *]");
+        distQuery.setRows(0);
+        distQuery.setFacet(true);
+        distQuery.addFacetField("rating");
+        distQuery.setFacetLimit(-1);
+
+        QueryResponse distResponse = solrClient.query(properties.getCores().getStories(), distQuery);
+        FacetField ratingFacet = distResponse.getFacetField("rating");
+
+        Map<Integer, Long> distribution = new HashMap<>();
+        if (ratingFacet != null && ratingFacet.getValues() != null) {
+            for (FacetField.Count count : ratingFacet.getValues()) {
+                try {
+                    int rating = Integer.parseInt(count.getName());
+                    distribution.put(rating, count.getCount());
+                } catch (NumberFormatException e) {
+                    // Skip invalid ratings
+                }
+            }
+        }
+
+        stats.setRatingDistribution(distribution);
+
+        return stats;
+    }
+
+    /**
+     * Get source domain statistics
+     */
+    public SourceDomainStatsDto getSourceDomainStatistics(String libraryId, int limit) throws IOException, SolrServerException {
+        SourceDomainStatsDto stats = new SourceDomainStatsDto();
+
+        // Get top domains using faceting
+        SolrQuery query = new SolrQuery("*:*");
+        query.addFilterQuery("libraryId:" + libraryId);
+        query.addFilterQuery("sourceDomain:[* TO *]"); // Only stories with source
+        query.setRows(0);
+        query.setFacet(true);
+        query.addFacetField("sourceDomain");
+        query.setFacetLimit(limit);
+        query.setFacetSort("count");
+
+        QueryResponse response = solrClient.query(properties.getCores().getStories(), query);
+        long storiesWithSource = response.getResults().getNumFound();
+
+        FacetField domainFacet = response.getFacetField("sourceDomain");
+
+        List<SourceDomainStatsDto.DomainStatsDto> topDomains = new ArrayList<>();
+        if (domainFacet != null && domainFacet.getValues() != null) {
+            for (FacetField.Count count : domainFacet.getValues()) {
+                topDomains.add(new SourceDomainStatsDto.DomainStatsDto(count.getName(), count.getCount()));
+            }
+        }
+
+        stats.setTopDomains(topDomains);
+        stats.setStoriesWithSource(storiesWithSource);
+
+        long totalStories = getTotalStories(libraryId);
+        stats.setStoriesWithoutSource(totalStories - storiesWithSource);
+
+        return stats;
+    }
+
+    /**
+     * Get reading progress statistics
+     */
+    public ReadingProgressStatsDto getReadingProgressStatistics(String libraryId) throws IOException, SolrServerException {
+        ReadingProgressStatsDto stats = new ReadingProgressStatsDto();
+
+        long totalStories = getTotalStories(libraryId);
+        stats.setTotalStories(totalStories);
+
+        // Get read stories count
+        SolrQuery readQuery = new SolrQuery("*:*");
+        readQuery.addFilterQuery("libraryId:" + libraryId);
+        readQuery.addFilterQuery("isRead:true");
+        readQuery.setRows(0);
+
+        QueryResponse readResponse = solrClient.query(properties.getCores().getStories(), readQuery);
+        long readStories = readResponse.getResults().getNumFound();
+
+        stats.setReadStories(readStories);
+        stats.setUnreadStories(totalStories - readStories);
+
+        if (totalStories > 0) {
+            stats.setPercentageRead((readStories * 100.0) / totalStories);
+        }
+
+        // Get total words read
+        SolrQuery readWordsQuery = new SolrQuery("*:*");
+        readWordsQuery.addFilterQuery("libraryId:" + libraryId);
+        readWordsQuery.addFilterQuery("isRead:true");
+        readWordsQuery.setRows(0);
+        readWordsQuery.setParam(StatsParams.STATS, true);
+        readWordsQuery.setParam(StatsParams.STATS_FIELD, "wordCount");
+
+        QueryResponse readWordsResponse = solrClient.query(properties.getCores().getStories(), readWordsQuery);
+        var readFieldStats = readWordsResponse.getFieldStatsInfo();
+        if (readFieldStats != null && readFieldStats.get("wordCount") != null) {
+            var fieldStat = readFieldStats.get("wordCount");
+            Object sumObj = fieldStat.getSum();
+            stats.setTotalWordsRead((sumObj != null) ? ((Number) sumObj).longValue() : 0L);
+        }
+
+        // Get total words unread
+        SolrQuery unreadWordsQuery = new SolrQuery("*:*");
+        unreadWordsQuery.addFilterQuery("libraryId:" + libraryId);
+        unreadWordsQuery.addFilterQuery("isRead:false");
+        unreadWordsQuery.setRows(0);
+        unreadWordsQuery.setParam(StatsParams.STATS, true);
+        unreadWordsQuery.setParam(StatsParams.STATS_FIELD, "wordCount");
+
+        QueryResponse unreadWordsResponse = solrClient.query(properties.getCores().getStories(), unreadWordsQuery);
+        var unreadFieldStats = unreadWordsResponse.getFieldStatsInfo();
+        if (unreadFieldStats != null && unreadFieldStats.get("wordCount") != null) {
+            var fieldStat = unreadFieldStats.get("wordCount");
+            Object sumObj = fieldStat.getSum();
+            stats.setTotalWordsUnread((sumObj != null) ? ((Number) sumObj).longValue() : 0L);
+        }
+
+        return stats;
+    }
+
+    /**
+     * Get reading activity statistics for the last week
+     */
+    public ReadingActivityStatsDto getReadingActivityStatistics(String libraryId) throws IOException, SolrServerException {
+        ReadingActivityStatsDto stats = new ReadingActivityStatsDto();
+
+        LocalDateTime oneWeekAgo = LocalDateTime.now().minusWeeks(1);
+        String oneWeekAgoStr = oneWeekAgo.toInstant(ZoneOffset.UTC).toString();
+
+        // Get stories read in last week
+        SolrQuery query = new SolrQuery("*:*");
+        query.addFilterQuery("libraryId:" + libraryId);
+        query.addFilterQuery("lastReadAt:[" + oneWeekAgoStr + " TO *]");
+        query.setRows(0);
+
+        QueryResponse response = solrClient.query(properties.getCores().getStories(), query);
+        long storiesReadLastWeek = response.getResults().getNumFound();
+        stats.setStoriesReadLastWeek(storiesReadLastWeek);
+
+        // Get words read in last week
+        SolrQuery wordsQuery = new SolrQuery("*:*");
+        wordsQuery.addFilterQuery("libraryId:" + libraryId);
+        wordsQuery.addFilterQuery("lastReadAt:[" + oneWeekAgoStr + " TO *]");
+        wordsQuery.setRows(0);
+        wordsQuery.setParam(StatsParams.STATS, true);
+        wordsQuery.setParam(StatsParams.STATS_FIELD, "wordCount");
+
+        QueryResponse wordsResponse = solrClient.query(properties.getCores().getStories(), wordsQuery);
+        var fieldStatsInfo = wordsResponse.getFieldStatsInfo();
+        long wordsReadLastWeek = 0L;
+        if (fieldStatsInfo != null && fieldStatsInfo.get("wordCount") != null) {
+            var fieldStat = fieldStatsInfo.get("wordCount");
+            Object sumObj = fieldStat.getSum();
+            wordsReadLastWeek = (sumObj != null) ? ((Number) sumObj).longValue() : 0L;
+        }
+
+        stats.setWordsReadLastWeek(wordsReadLastWeek);
+        stats.setReadingTimeMinutesLastWeek(wordsReadLastWeek / WORDS_PER_MINUTE);
+
+        // Get daily activity (last 7 days)
+        List<ReadingActivityStatsDto.DailyActivityDto> dailyActivity = new ArrayList<>();
+        for (int i = 6; i >= 0; i--) {
+            LocalDate date = LocalDate.now().minusDays(i);
+            LocalDateTime dayStart = date.atStartOfDay();
+            LocalDateTime dayEnd = date.atTime(23, 59, 59);
+
+            String dayStartStr = dayStart.toInstant(ZoneOffset.UTC).toString();
+            String dayEndStr = dayEnd.toInstant(ZoneOffset.UTC).toString();
+
+            SolrQuery dayQuery = new SolrQuery("*:*");
+            dayQuery.addFilterQuery("libraryId:" + libraryId);
+            dayQuery.addFilterQuery("lastReadAt:[" + dayStartStr + " TO " + dayEndStr + "]");
+            dayQuery.setRows(0);
+            dayQuery.setParam(StatsParams.STATS, true);
+            dayQuery.setParam(StatsParams.STATS_FIELD, "wordCount");
+
+            QueryResponse dayResponse = solrClient.query(properties.getCores().getStories(), dayQuery);
+            long storiesRead = dayResponse.getResults().getNumFound();
+
+            long wordsRead = 0L;
+            var dayFieldStats = dayResponse.getFieldStatsInfo();
+            if (dayFieldStats != null && dayFieldStats.get("wordCount") != null) {
+                var fieldStat = dayFieldStats.get("wordCount");
+                Object sumObj = fieldStat.getSum();
+                wordsRead = (sumObj != null) ? ((Number) sumObj).longValue() : 0L;
+            }
+
+            dailyActivity.add(new ReadingActivityStatsDto.DailyActivityDto(
+                    date.format(DateTimeFormatter.ISO_LOCAL_DATE),
+                    storiesRead,
+                    wordsRead
+            ));
+        }
+
+        stats.setDailyActivity(dailyActivity);
+
+        return stats;
+    }
 }

frontend/src/app/statistics/page.tsx

@@ -0,0 +1,491 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { useRouter } from 'next/navigation';
+import AppLayout from '@/components/layout/AppLayout';
+import { statisticsApi, getCurrentLibraryId } from '@/lib/api';
+import {
+  LibraryOverviewStats,
+  TopTagsStats,
+  TopAuthorsStats,
+  RatingStats,
+  SourceDomainStats,
+  ReadingProgressStats,
+  ReadingActivityStats
+} from '@/types/api';
+
+function StatisticsContent() {
+  const router = useRouter();
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  // Statistics state
+  const [overviewStats, setOverviewStats] = useState<LibraryOverviewStats | null>(null);
+  const [topTags, setTopTags] = useState<TopTagsStats | null>(null);
+  const [topAuthors, setTopAuthors] = useState<TopAuthorsStats | null>(null);
+  const [ratingStats, setRatingStats] = useState<RatingStats | null>(null);
+  const [sourceDomains, setSourceDomains] = useState<SourceDomainStats | null>(null);
+  const [readingProgress, setReadingProgress] = useState<ReadingProgressStats | null>(null);
+  const [readingActivity, setReadingActivity] = useState<ReadingActivityStats | null>(null);
+
+  useEffect(() => {
+    loadStatistics();
+  }, []);
+
+  const loadStatistics = async () => {
+    try {
+      setLoading(true);
+      setError(null);
+
+      const libraryId = getCurrentLibraryId();
+      if (!libraryId) {
+        router.push('/library');
+        return;
+      }
+
+      // Load all statistics in parallel
+      const [overview, tags, authors, ratings, domains, progress, activity] = await Promise.all([
+        statisticsApi.getOverviewStatistics(libraryId),
+        statisticsApi.getTopTags(libraryId, 20),
+        statisticsApi.getTopAuthors(libraryId, 10),
+        statisticsApi.getRatingStats(libraryId),
+        statisticsApi.getSourceDomainStats(libraryId, 10),
+        statisticsApi.getReadingProgress(libraryId),
+        statisticsApi.getReadingActivity(libraryId),
+      ]);
+
+      setOverviewStats(overview);
+      setTopTags(tags);
+      setTopAuthors(authors);
+      setRatingStats(ratings);
+      setSourceDomains(domains);
+      setReadingProgress(progress);
+      setReadingActivity(activity);
+    } catch (err) {
+      console.error('Failed to load statistics:', err);
+      setError('Failed to load statistics. Please try again.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const formatNumber = (num: number): string => {
+    return num.toLocaleString();
+  };
+
+  const formatTime = (minutes: number): string => {
+    const hours = Math.floor(minutes / 60);
+    const mins = Math.round(minutes % 60);
+
+    if (hours > 24) {
+      const days = Math.floor(hours / 24);
+      const remainingHours = hours % 24;
+      return `${days}d ${remainingHours}h`;
+    }
+
+    if (hours > 0) {
+      return `${hours}h ${mins}m`;
+    }
+
+    return `${mins}m`;
+  };
+
+  if (loading) {
+    return (
+      <div className="container mx-auto px-4 py-8">
+        <div className="flex items-center justify-center min-h-[400px]">
+          <div className="text-center">
+            <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600 mx-auto mb-4"></div>
+            <p className="text-gray-600 dark:text-gray-400">Loading statistics...</p>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+  if (error) {
+    return (
+      <div className="container mx-auto px-4 py-8">
+        <div className="bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-800 rounded-lg p-6">
+          <h3 className="text-lg font-semibold text-red-800 dark:text-red-200 mb-2">Error</h3>
+          <p className="text-red-600 dark:text-red-400">{error}</p>
+          <button
+            onClick={loadStatistics}
+            className="mt-4 px-4 py-2 bg-red-600 text-white rounded hover:bg-red-700 transition-colors"
+          >
+            Try Again
+          </button>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="container mx-auto px-4 py-8">
+      <div className="mb-8">
+        <h1 className="text-3xl font-bold text-gray-900 dark:text-white mb-2">Library Statistics</h1>
+        <p className="text-gray-600 dark:text-gray-400">
+          Insights and analytics for your story collection
+        </p>
+      </div>
+
+      {/* Collection Overview */}
+      {overviewStats && (
+        <section className="mb-8">
+          <h2 className="text-2xl font-semibold text-gray-800 dark:text-gray-200 mb-4">Collection Overview</h2>
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+            <StatCard title="Total Stories" value={formatNumber(overviewStats.totalStories)} />
+            <StatCard title="Total Authors" value={formatNumber(overviewStats.totalAuthors)} />
+            <StatCard title="Total Series" value={formatNumber(overviewStats.totalSeries)} />
+            <StatCard title="Total Tags" value={formatNumber(overviewStats.totalTags)} />
+            <StatCard title="Total Collections" value={formatNumber(overviewStats.totalCollections)} />
+            <StatCard title="Source Domains" value={formatNumber(overviewStats.uniqueSourceDomains)} />
+          </div>
+        </section>
+      )}
+
+      {/* Content Metrics */}
+      {overviewStats && (
+        <section className="mb-8">
+          <h2 className="text-2xl font-semibold text-gray-800 dark:text-gray-200 mb-4">Content Metrics</h2>
+          <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+            <StatCard
+              title="Total Words"
+              value={formatNumber(overviewStats.totalWordCount)}
+              subtitle={`${formatTime(overviewStats.totalReadingTimeMinutes)} reading time`}
+            />
+            <StatCard
+              title="Average Words per Story"
+              value={formatNumber(Math.round(overviewStats.averageWordsPerStory))}
+              subtitle={`${formatTime(overviewStats.averageReadingTimeMinutes)} avg reading time`}
+            />
+            {overviewStats.longestStory && (
+              <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+                <h3 className="text-sm font-medium text-gray-500 dark:text-gray-400 mb-2">Longest Story</h3>
+                <p className="text-2xl font-bold text-gray-900 dark:text-white mb-1">
+                  {formatNumber(overviewStats.longestStory.wordCount)} words
+                </p>
+                <p className="text-sm text-gray-600 dark:text-gray-400 truncate" title={overviewStats.longestStory.title}>
+                  {overviewStats.longestStory.title}
+                </p>
+                <p className="text-xs text-gray-500 dark:text-gray-500">
+                  by {overviewStats.longestStory.authorName}
+                </p>
+              </div>
+            )}
+            {overviewStats.shortestStory && (
+              <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+                <h3 className="text-sm font-medium text-gray-500 dark:text-gray-400 mb-2">Shortest Story</h3>
+                <p className="text-2xl font-bold text-gray-900 dark:text-white mb-1">
+                  {formatNumber(overviewStats.shortestStory.wordCount)} words
+                </p>
+                <p className="text-sm text-gray-600 dark:text-gray-400 truncate" title={overviewStats.shortestStory.title}>
+                  {overviewStats.shortestStory.title}
+                </p>
+                <p className="text-xs text-gray-500 dark:text-gray-500">
+                  by {overviewStats.shortestStory.authorName}
+                </p>
+              </div>
+            )}
+          </div>
+        </section>
+      )}
+
+      {/* Reading Progress & Activity - Side by side */}
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-8 mb-8">
+        {/* Reading Progress */}
+        {readingProgress && (
+          <section>
+            <h2 className="text-2xl font-semibold text-gray-800 dark:text-gray-200 mb-4">Reading Progress</h2>
+            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+              <div className="mb-6">
+                <div className="flex justify-between items-center mb-2">
+                  <span className="text-sm font-medium text-gray-600 dark:text-gray-400">
+                    {formatNumber(readingProgress.readStories)} of {formatNumber(readingProgress.totalStories)} stories read
+                  </span>
+                  <span className="text-sm font-semibold text-blue-600 dark:text-blue-400">
+                    {readingProgress.percentageRead.toFixed(1)}%
+                  </span>
+                </div>
+                <div className="w-full bg-gray-200 dark:bg-gray-700 rounded-full h-3">
+                  <div
+                    className="bg-blue-600 h-3 rounded-full transition-all duration-500"
+                    style={{ width: `${readingProgress.percentageRead}%` }}
+                  ></div>
+                </div>
+              </div>
+              <div className="grid grid-cols-2 gap-4">
+                <div>
+                  <p className="text-sm text-gray-500 dark:text-gray-400">Words Read</p>
+                  <p className="text-xl font-semibold text-green-600 dark:text-green-400">
+                    {formatNumber(readingProgress.totalWordsRead)}
+                  </p>
+                </div>
+                <div>
+                  <p className="text-sm text-gray-500 dark:text-gray-400">Words Remaining</p>
+                  <p className="text-xl font-semibold text-orange-600 dark:text-orange-400">
+                    {formatNumber(readingProgress.totalWordsUnread)}
+                  </p>
+                </div>
+              </div>
+            </div>
+          </section>
+        )}
+
+        {/* Reading Activity - Last Week */}
+        {readingActivity && (
+          <section>
+            <h2 className="text-2xl font-semibold text-gray-800 dark:text-gray-200 mb-4">Last Week Activity</h2>
+            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+              <div className="grid grid-cols-3 gap-4 mb-6">
+                <div className="text-center">
+                  <p className="text-sm text-gray-500 dark:text-gray-400">Stories</p>
+                  <p className="text-2xl font-bold text-gray-900 dark:text-white">
+                    {formatNumber(readingActivity.storiesReadLastWeek)}
+                  </p>
+                </div>
+                <div className="text-center">
+                  <p className="text-sm text-gray-500 dark:text-gray-400">Words</p>
+                  <p className="text-2xl font-bold text-gray-900 dark:text-white">
+                    {formatNumber(readingActivity.wordsReadLastWeek)}
+                  </p>
+                </div>
+                <div className="text-center">
+                  <p className="text-sm text-gray-500 dark:text-gray-400">Time</p>
+                  <p className="text-2xl font-bold text-gray-900 dark:text-white">
+                    {formatTime(readingActivity.readingTimeMinutesLastWeek)}
+                  </p>
+                </div>
+              </div>
+
+              {/* Daily Activity Chart */}
+              <div className="space-y-2">
+                <p className="text-sm font-medium text-gray-600 dark:text-gray-400 mb-3">Daily Breakdown</p>
+                {readingActivity.dailyActivity.map((day) => {
+                  const maxWords = Math.max(...readingActivity.dailyActivity.map(d => d.wordsRead), 1);
+                  const percentage = (day.wordsRead / maxWords) * 100;
+
+                  return (
+                    <div key={day.date} className="flex items-center gap-3">
+                      <span className="text-xs text-gray-500 dark:text-gray-400 w-20">
+                        {new Date(day.date).toLocaleDateString('en-US', { month: 'short', day: 'numeric' })}
+                      </span>
+                      <div className="flex-1 bg-gray-200 dark:bg-gray-700 rounded-full h-6 relative">
+                        <div
+                          className="bg-blue-500 h-6 rounded-full transition-all duration-300"
+                          style={{ width: `${percentage}%` }}
+                        ></div>
+                        {day.storiesRead > 0 && (
+                          <span className="absolute inset-0 flex items-center justify-center text-xs font-medium text-gray-700 dark:text-gray-300">
+                            {day.storiesRead} {day.storiesRead === 1 ? 'story' : 'stories'}
+                          </span>
+                        )}
+                      </div>
+                    </div>
+                  );
+                })}
+              </div>
+            </div>
+          </section>
+        )}
+      </div>
+
+      {/* Ratings & Source Domains - Side by side */}
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-8 mb-8">
+        {/* Rating Statistics */}
+        {ratingStats && (
+          <section>
+            <h2 className="text-2xl font-semibold text-gray-800 dark:text-gray-200 mb-4">Rating Statistics</h2>
+            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+              <div className="text-center mb-6">
+                <p className="text-sm text-gray-500 dark:text-gray-400 mb-1">Average Rating</p>
+                <p className="text-4xl font-bold text-yellow-500">
+                  {ratingStats.averageRating.toFixed(1)} ⭐
+                </p>
+                <p className="text-sm text-gray-600 dark:text-gray-400 mt-2">
+                  {formatNumber(ratingStats.totalRatedStories)} rated • {formatNumber(ratingStats.totalUnratedStories)} unrated
+                </p>
+              </div>
+
+              {/* Rating Distribution */}
+              <div className="space-y-2">
+                {[5, 4, 3, 2, 1].map(rating => {
+                  const count = ratingStats.ratingDistribution[rating] || 0;
+                  const percentage = ratingStats.totalRatedStories > 0
+                    ? (count / ratingStats.totalRatedStories) * 100
+                    : 0;
+
+                  return (
+                    <div key={rating} className="flex items-center gap-2">
+                      <span className="text-sm font-medium text-gray-600 dark:text-gray-400 w-12">
+                        {rating} ⭐
+                      </span>
+                      <div className="flex-1 bg-gray-200 dark:bg-gray-700 rounded-full h-4">
+                        <div
+                          className="bg-yellow-500 h-4 rounded-full transition-all duration-300"
+                          style={{ width: `${percentage}%` }}
+                        ></div>
+                      </div>
+                      <span className="text-sm text-gray-600 dark:text-gray-400 w-16 text-right">
+                        {formatNumber(count)}
+                      </span>
+                    </div>
+                  );
+                })}
+              </div>
+            </div>
+          </section>
+        )}
+
+        {/* Source Domains */}
+        {sourceDomains && (
+          <section>
+            <h2 className="text-2xl font-semibold text-gray-800 dark:text-gray-200 mb-4">Source Domains</h2>
+            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+              <div className="grid grid-cols-2 gap-4 mb-6">
+                <div className="text-center">
+                  <p className="text-sm text-gray-500 dark:text-gray-400">With Source</p>
+                  <p className="text-2xl font-bold text-green-600 dark:text-green-400">
+                    {formatNumber(sourceDomains.storiesWithSource)}
+                  </p>
+                </div>
+                <div className="text-center">
+                  <p className="text-sm text-gray-500 dark:text-gray-400">No Source</p>
+                  <p className="text-2xl font-bold text-gray-500 dark:text-gray-400">
+                    {formatNumber(sourceDomains.storiesWithoutSource)}
+                  </p>
+                </div>
+              </div>
+
+              <div className="space-y-3">
+                <p className="text-sm font-medium text-gray-600 dark:text-gray-400">Top Domains</p>
+                {sourceDomains.topDomains.slice(0, 5).map((domain, index) => (
+                  <div key={domain.domain} className="flex items-center justify-between">
+                    <div className="flex items-center gap-2 flex-1 min-w-0">
+                      <span className="text-sm font-medium text-gray-500 dark:text-gray-400 w-5">
+                        {index + 1}.
+                      </span>
+                      <span className="text-sm text-gray-700 dark:text-gray-300 truncate" title={domain.domain}>
+                        {domain.domain}
+                      </span>
+                    </div>
+                    <span className="text-sm font-semibold text-blue-600 dark:text-blue-400 ml-2">
+                      {formatNumber(domain.storyCount)}
+                    </span>
+                  </div>
+                ))}
+              </div>
+            </div>
+          </section>
+        )}
+      </div>
+
+      {/* Top Tags & Top Authors - Side by side */}
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-8">
+        {/* Top Tags */}
+        {topTags && (
+          <section>
+            <h2 className="text-2xl font-semibold text-gray-800 dark:text-gray-200 mb-4">Most Used Tags</h2>
+            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+              <div className="space-y-3">
+                {topTags.topTags.slice(0, 10).map((tag, index) => {
+                  const maxCount = topTags.topTags[0]?.storyCount || 1;
+                  const percentage = (tag.storyCount / maxCount) * 100;
+
+                  return (
+                    <div key={tag.tagName} className="flex items-center gap-3">
+                      <span className="text-sm font-medium text-gray-500 dark:text-gray-400 w-6">
+                        {index + 1}
+                      </span>
+                      <div className="flex-1">
+                        <div className="flex items-center justify-between mb-1">
+                          <span className="text-sm font-medium text-gray-700 dark:text-gray-300">
+                            {tag.tagName}
+                          </span>
+                          <span className="text-sm text-gray-600 dark:text-gray-400">
+                            {formatNumber(tag.storyCount)}
+                          </span>
+                        </div>
+                        <div className="w-full bg-gray-200 dark:bg-gray-700 rounded-full h-2">
+                          <div
+                            className="bg-purple-500 h-2 rounded-full transition-all duration-300"
+                            style={{ width: `${percentage}%` }}
+                          ></div>
+                        </div>
+                      </div>
+                    </div>
+                  );
+                })}
+              </div>
+            </div>
+          </section>
+        )}
+
+        {/* Top Authors */}
+        {topAuthors && (
+          <section>
+            <h2 className="text-2xl font-semibold text-gray-800 dark:text-gray-200 mb-4">Top Authors</h2>
+            <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+              {/* Tab switcher */}
+              <div className="flex gap-2 mb-4">
+                <button
+                  onClick={() => {/* Could add tab switching if needed */}}
+                  className="flex-1 px-4 py-2 text-sm font-medium bg-blue-100 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 rounded-lg"
+                >
+                  By Stories
+                </button>
+                <button
+                  onClick={() => {/* Could add tab switching if needed */}}
+                  className="flex-1 px-4 py-2 text-sm font-medium text-gray-600 dark:text-gray-400 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-lg"
+                >
+                  By Words
+                </button>
+              </div>
+
+              <div className="space-y-3">
+                {topAuthors.topAuthorsByStories.slice(0, 5).map((author, index) => (
+                  <div key={author.authorId} className="flex items-center justify-between p-3 bg-gray-50 dark:bg-gray-700/50 rounded-lg">
+                    <div className="flex items-center gap-3 flex-1 min-w-0">
+                      <span className="text-lg font-bold text-gray-400 dark:text-gray-500 w-6">
+                        {index + 1}
+                      </span>
+                      <div className="flex-1 min-w-0">
+                        <p className="text-sm font-medium text-gray-900 dark:text-white truncate" title={author.authorName}>
+                          {author.authorName}
+                        </p>
+                        <p className="text-xs text-gray-500 dark:text-gray-400">
+                          {formatNumber(author.storyCount)} stories • {formatNumber(author.totalWords)} words
+                        </p>
+                      </div>
+                    </div>
+                  </div>
+                ))}
+              </div>
+            </div>
+          </section>
+        )}
+      </div>
+    </div>
+  );
+}
+
+export default function StatisticsPage() {
+  return (
+    <AppLayout>
+      <StatisticsContent />
+    </AppLayout>
+  );
+}
+
+// Reusable stat card component
+function StatCard({ title, value, subtitle }: { title: string; value: string; subtitle?: string }) {
+  return (
+    <div className="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+      <h3 className="text-sm font-medium text-gray-500 dark:text-gray-400 mb-2">{title}</h3>
+      <p className="text-2xl font-bold text-gray-900 dark:text-white">{value}</p>
+      {subtitle && (
+        <p className="text-sm text-gray-600 dark:text-gray-400 mt-1">{subtitle}</p>
+      )}
+    </div>
+  );
+}

frontend/src/components/layout/Header.tsx

@@ -75,12 +75,18 @@ export default function Header() {
             >
               Collections
             </Link>
-            <Link 
-              href="/authors" 
+            <Link
+              href="/authors"
               className="theme-text hover:theme-accent transition-colors font-medium"
             >
               Authors
             </Link>
+            <Link
+              href="/statistics"
+              className="theme-text hover:theme-accent transition-colors font-medium"
+            >
+              Statistics
+            </Link>
             <Dropdown
               trigger="Add Story"
               items={addStoryItems}
@@ -146,13 +152,20 @@ export default function Header() {
               >
                 Collections
               </Link>
-              <Link 
-                href="/authors" 
+              <Link
+                href="/authors"
                 className="theme-text hover:theme-accent transition-colors font-medium px-2 py-1"
                 onClick={() => setIsMenuOpen(false)}
               >
                 Authors
               </Link>
+              <Link
+                href="/statistics"
+                className="theme-text hover:theme-accent transition-colors font-medium px-2 py-1"
+                onClick={() => setIsMenuOpen(false)}
+              >
+                Statistics
+              </Link>
               <div className="px-2 py-1">
                 <div className="font-medium theme-text mb-1">Add Story</div>
                 <div className="pl-4 space-y-1">

frontend/src/lib/api.ts

@@ -1096,6 +1096,42 @@ export const statisticsApi = {
     const response = await api.get(`/libraries/${libraryId}/statistics/overview`);
     return response.data;
   },
+
+  getTopTags: async (libraryId: string, limit: number = 20): Promise<import('../types/api').TopTagsStats> => {
+    const response = await api.get(`/libraries/${libraryId}/statistics/top-tags`, {
+      params: { limit }
+    });
+    return response.data;
+  },
+
+  getTopAuthors: async (libraryId: string, limit: number = 10): Promise<import('../types/api').TopAuthorsStats> => {
+    const response = await api.get(`/libraries/${libraryId}/statistics/top-authors`, {
+      params: { limit }
+    });
+    return response.data;
+  },
+
+  getRatingStats: async (libraryId: string): Promise<import('../types/api').RatingStats> => {
+    const response = await api.get(`/libraries/${libraryId}/statistics/ratings`);
+    return response.data;
+  },
+
+  getSourceDomainStats: async (libraryId: string, limit: number = 10): Promise<import('../types/api').SourceDomainStats> => {
+    const response = await api.get(`/libraries/${libraryId}/statistics/source-domains`, {
+      params: { limit }
+    });
+    return response.data;
+  },
+
+  getReadingProgress: async (libraryId: string): Promise<import('../types/api').ReadingProgressStats> => {
+    const response = await api.get(`/libraries/${libraryId}/statistics/reading-progress`);
+    return response.data;
+  },
+
+  getReadingActivity: async (libraryId: string): Promise<import('../types/api').ReadingActivityStats> => {
+    const response = await api.get(`/libraries/${libraryId}/statistics/reading-activity`);
+    return response.data;
+  },
 };
 
 // Image utility - now library-aware

frontend/src/types/api.ts

@@ -233,4 +233,71 @@ export interface StoryWordCount {
   authorName: string;
   wordCount: number;
   readingTimeMinutes: number;
+}
+
+// Top Tags Statistics
+export interface TopTagsStats {
+  topTags: TagStats[];
+}
+
+export interface TagStats {
+  tagName: string;
+  storyCount: number;
+}
+
+// Top Authors Statistics
+export interface TopAuthorsStats {
+  topAuthorsByStories: AuthorStats[];
+  topAuthorsByWords: AuthorStats[];
+}
+
+export interface AuthorStats {
+  authorId: string;
+  authorName: string;
+  storyCount: number;
+  totalWords: number;
+}
+
+// Rating Statistics
+export interface RatingStats {
+  averageRating: number;
+  totalRatedStories: number;
+  totalUnratedStories: number;
+  ratingDistribution: Record<number, number>; // rating -> count
+}
+
+// Source Domain Statistics
+export interface SourceDomainStats {
+  topDomains: DomainStats[];
+  storiesWithSource: number;
+  storiesWithoutSource: number;
+}
+
+export interface DomainStats {
+  domain: string;
+  storyCount: number;
+}
+
+// Reading Progress Statistics
+export interface ReadingProgressStats {
+  totalStories: number;
+  readStories: number;
+  unreadStories: number;
+  percentageRead: number;
+  totalWordsRead: number;
+  totalWordsUnread: number;
+}
+
+// Reading Activity Statistics
+export interface ReadingActivityStats {
+  storiesReadLastWeek: number;
+  wordsReadLastWeek: number;
+  readingTimeMinutesLastWeek: number;
+  dailyActivity: DailyActivity[];
+}
+
+export interface DailyActivity {
+  date: string; // YYYY-MM-DD
+  storiesRead: number;
+  wordsRead: number;
 }

solr/stories/conf/managed-schema

@@ -112,6 +112,13 @@
   <field name="searchScore" type="pdouble" indexed="false" stored="true"/>
   <field name="highlights" type="strings" indexed="false" stored="true"/>
 
+  <!-- Statistics-specific Fields -->
+  <field name="hasDescription" type="boolean" indexed="true" stored="true"/>
+  <field name="hasCoverImage" type="boolean" indexed="true" stored="true"/>
+  <field name="hasRating" type="boolean" indexed="true" stored="true"/>
+  <field name="sourceDomain" type="string" indexed="true" stored="true"/>
+  <field name="tagCount" type="pint" indexed="true" stored="true"/>
+
   <!-- Combined search field for general queries -->
   <field name="text" type="text_general" indexed="true" stored="false" multiValued="true"/>