Add 'web/' from commit '81828f61cf893039b89d3cf1861555f31167c37d'

git-subtree-dir: web
git-subtree-mainline: 7dbb36d619
git-subtree-split: 81828f61cf

web/src/features/video-streaming/hooks/useVideoList.ts

@@ -0,0 +1,262 @@
+/**
+ * useVideoList Hook
+ * 
+ * Custom React hook for managing video list state, fetching, filtering, and pagination.
+ * Provides a clean interface for components to interact with video data.
+ */
+
+import { useState, useEffect, useCallback, useRef } from 'react';
+import { videoApiService } from '../services/videoApi';
+import {
+  type VideoFile,
+  type VideoListParams,
+  type VideoError,
+  type LoadingState,
+  type VideoListFilters,
+  type VideoListSortOptions
+} from '../types';
+
+export interface UseVideoListReturn {
+  videos: VideoFile[];
+  totalCount: number;
+  currentPage: number;
+  totalPages: number;
+  loading: LoadingState;
+  error: VideoError | null;
+  refetch: () => Promise<void>;
+  loadMore: () => Promise<void>;
+  hasMore: boolean;
+  goToPage: (page: number) => Promise<void>;
+  nextPage: () => Promise<void>;
+  previousPage: () => Promise<void>;
+  updateFilters: (filters: VideoListFilters) => void;
+  updateSort: (sortOptions: VideoListSortOptions) => void;
+  clearCache: () => void;
+  reset: () => void;
+}
+import { filterVideos, sortVideos } from '../utils/videoUtils';
+
+interface UseVideoListOptions {
+  initialParams?: VideoListParams;
+  autoFetch?: boolean;
+  cacheKey?: string;
+}
+
+export function useVideoList(options: UseVideoListOptions = {}) {
+  const {
+    initialParams = {},
+    autoFetch = true,
+    cacheKey = 'default'
+  } = options;
+
+  // State
+  const [videos, setVideos] = useState<VideoFile[]>([]);
+  const [totalCount, setTotalCount] = useState(0);
+  const [currentPage, setCurrentPage] = useState(1);
+  const [totalPages, setTotalPages] = useState(0);
+  const [loading, setLoading] = useState<LoadingState>('idle');
+  const [error, setError] = useState<VideoError | null>(null);
+  const [hasMore, setHasMore] = useState(true);
+  const [currentParams, setCurrentParams] = useState<VideoListParams>(initialParams);
+
+  // Refs for cleanup and caching
+  const abortControllerRef = useRef<AbortController | null>(null);
+  const debounceTimeoutRef = useRef<NodeJS.Timeout | null>(null);
+  const CACHE_DURATION = 5 * 60 * 1000; // 5 minutes
+
+  /**
+   * Fetch videos from API
+   */
+  const fetchVideos = useCallback(async (
+    params: VideoListParams = initialParams,
+    append: boolean = false
+  ): Promise<void> => {
+    // Cancel any ongoing request
+    if (abortControllerRef.current) {
+      abortControllerRef.current.abort();
+    }
+
+    const controller = new AbortController();
+    abortControllerRef.current = controller;
+
+    try {
+      setLoading('loading');
+      setError(null);
+
+      // Fetch from API
+      const response = await videoApiService.getVideos(params);
+
+      // Check if request was aborted
+      if (controller.signal.aborted) {
+        return;
+      }
+
+      // Update state
+      setVideos(append ? prev => [...prev, ...response.videos] : response.videos);
+      setTotalCount(response.total_count);
+
+      // Update pagination state
+      if (response.page && response.total_pages) {
+        setCurrentPage(response.page);
+        setTotalPages(response.total_pages);
+        setHasMore(response.has_next || false);
+      } else {
+        // Fallback for offset-based pagination
+        setHasMore(response.videos.length === (params.limit || 50));
+      }
+
+      setLoading('success');
+
+    } catch (err) {
+      if (controller.signal.aborted) {
+        return;
+      }
+
+      const videoError: VideoError = err instanceof Error
+        ? { code: 'FETCH_ERROR', message: err.message, details: err }
+        : { code: 'UNKNOWN_ERROR', message: 'An unknown error occurred' };
+
+      setError(videoError);
+      setLoading('error');
+    } finally {
+      abortControllerRef.current = null;
+    }
+  }, [initialParams]);
+
+  /**
+   * Refetch videos with current page
+   */
+  const refetch = useCallback(async (): Promise<void> => {
+    const currentParams = {
+      ...initialParams,
+      page: currentPage,
+      limit: initialParams.limit || 20,
+    };
+    await fetchVideos(currentParams, false);
+  }, [fetchVideos, initialParams, currentPage]);
+
+  /**
+   * Load more videos (pagination) - for backward compatibility
+   */
+  const loadMore = useCallback(async (): Promise<void> => {
+    if (!hasMore || loading === 'loading') {
+      return;
+    }
+
+    const offset = videos.length;
+    const params = { ...initialParams, offset };
+    await fetchVideos(params, true);
+  }, [hasMore, loading, videos.length, initialParams, fetchVideos]);
+
+  /**
+   * Go to specific page
+   */
+  const goToPage = useCallback(async (page: number): Promise<void> => {
+    if (page < 1 || (totalPages > 0 && page > totalPages) || loading === 'loading') {
+      return;
+    }
+
+    const params = { ...currentParams, page, limit: currentParams.limit || 20 };
+    setCurrentParams(params);
+    await fetchVideos(params, false);
+  }, [currentParams, totalPages, loading, fetchVideos]);
+
+  /**
+   * Go to next page
+   */
+  const nextPage = useCallback(async (): Promise<void> => {
+    if (currentPage < totalPages) {
+      await goToPage(currentPage + 1);
+    }
+  }, [currentPage, totalPages, goToPage]);
+
+  /**
+   * Go to previous page
+   */
+  const previousPage = useCallback(async (): Promise<void> => {
+    if (currentPage > 1) {
+      await goToPage(currentPage - 1);
+    }
+  }, [currentPage, goToPage]);
+
+  /**
+   * Update filters and refetch
+   */
+  const updateFilters = useCallback((filters: VideoListFilters): void => {
+    const newParams: VideoListParams = {
+      ...initialParams,
+      camera_name: filters.cameraName,
+      start_date: filters.dateRange?.start,
+      end_date: filters.dateRange?.end,
+      page: 1, // Reset to first page when filters change
+      limit: initialParams.limit || 20,
+    };
+
+    setCurrentParams(newParams);
+    fetchVideos(newParams, false);
+  }, [initialParams, fetchVideos]);
+
+  /**
+   * Update sort options and refetch
+   */
+  const updateSort = useCallback((sortOptions: VideoListSortOptions): void => {
+    // Since the API doesn't support sorting, we'll sort locally
+    setVideos(prev => sortVideos(prev, sortOptions.field, sortOptions.direction));
+  }, []);
+
+  /**
+   * Clear cache (placeholder for future caching implementation)
+   */
+  const clearCache = useCallback((): void => {
+    // TODO: Implement cache clearing when caching is added
+    console.log('Cache cleared');
+  }, []);
+
+  /**
+   * Reset to initial state
+   */
+  const reset = useCallback((): void => {
+    setVideos([]);
+    setTotalCount(0);
+    setCurrentPage(1);
+    setTotalPages(0);
+    setLoading('idle');
+    setError(null);
+    setHasMore(true);
+  }, []);
+
+  // Auto-fetch on mount only
+  useEffect(() => {
+    if (autoFetch) {
+      fetchVideos(initialParams, false);
+    }
+
+    // Cleanup on unmount
+    return () => {
+      if (abortControllerRef.current) {
+        abortControllerRef.current.abort();
+      }
+    };
+  }, []); // Empty dependency array - only run once on mount
+
+  return {
+    videos,
+    totalCount,
+    currentPage,
+    totalPages,
+    loading,
+    error,
+    refetch,
+    loadMore,
+    hasMore,
+    // Pagination methods
+    goToPage,
+    nextPage,
+    previousPage,
+    // Additional utility methods
+    updateFilters,
+    updateSort,
+    clearCache,
+    reset,
+  };
+}