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import { normalizeNewsletterFilter } from '@common/utils/newsletterUtils';
import { useInfiniteQuery } from '@tanstack/react-query';
import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
import { useAuth } from '../../contexts/AuthContext';
import { optimizedNewsletterService } from '../../services/optimizedNewsletterService';
import { NewsletterWithRelations } from '../../types';
import { NewsletterFilter } from '../../types/cache';
import { queryKeyFactory } from '../../utils/queryKeyFactory';
export interface UseInfiniteNewslettersOptions {
enabled?: boolean;
_refetchOnWindowFocus?: boolean;
_refetchOnMount?: boolean;
_staleTime?: number;
pageSize?: number;
debug?: boolean;
}
export interface UseInfiniteNewslettersReturn {
newsletters: NewsletterWithRelations[];
isLoading: boolean;
isLoadingMore: boolean;
error: Error | null;
hasNextPage: boolean;
isFetchingNextPage: boolean;
fetchNextPage: () => void;
refetch: () => void;
totalCount: number;
pageCount: number;
currentPage: number;
}
/**
* Custom hook for infinite loading of newsletters with pagination
* Manages the business logic for fetching, caching, and paginating newsletter data
*/
export const useInfiniteNewsletters = (
filters: NewsletterFilter = {},
options: UseInfiniteNewslettersOptions = {}
): UseInfiniteNewslettersReturn => {
const { user } = useAuth();
const log = useLogger('useInfiniteNewsletters');
const {
enabled = true,
_refetchOnWindowFocus = false,
_refetchOnMount = false,
_staleTime = 30000, // 30 seconds
pageSize = 20,
debug = false,
} = options;
// Track current page for debugging/analytics
const [currentPage, setCurrentPage] = useState(1);
// Track if component is mounted to prevent queries after unmount
const isMounted = useRef(true);
// Throttle debug logging to prevent excessive logs during rapid updates
const lastDebugLogRef = useRef<Record<string, number>>({});
const DEBUG_THROTTLE_MS = 100; // Only log debug messages every 100ms
const throttledDebug = useCallback(
(action: string, message: string, metadata?: Record<string, unknown>) => {
if (!debug) return;
const now = Date.now();
const lastLog = lastDebugLogRef.current[action] || 0;
if (now - lastLog > DEBUG_THROTTLE_MS) {
log.debug(message, { action, metadata });
lastDebugLogRef.current[action] = now;
}
},
[debug, log]
);
useEffect(() => {
isMounted.current = true;
return () => {
isMounted.current = false;
};
}, []);
// Determine if query should run
const shouldRunQuery = enabled && !!user;
// Normalize filters to camelCase for query and cache
const normalizedFilters = useMemo(() => normalizeNewsletterFilter(filters), [filters]);
// Generate query key with normalized filters
const queryKey = useMemo(() => {
const key = queryKeyFactory.newsletters.infinite(normalizedFilters);
throttledDebug('query_key_generated', 'Generated query key', {
originalFilters: JSON.stringify(filters),
normalizedFilters: JSON.stringify(normalizedFilters),
queryKey: JSON.stringify(key),
});
return key;
}, [filters, normalizedFilters, throttledDebug]);
// Build API query parameters from normalized filters - memoize to prevent unnecessary re-renders
const baseQueryParams = useMemo(() => {
const params = {
search: normalizedFilters.search,
isRead: normalizedFilters.isRead,
isArchived: normalizedFilters.isArchived,
isLiked: normalizedFilters.isLiked,
tagIds: normalizedFilters.tagIds ? [...normalizedFilters.tagIds] : undefined, // Create a new array to ensure stability
sourceIds: normalizedFilters.sourceIds ? [...normalizedFilters.sourceIds] : undefined, // Create a new array to ensure stability
dateFrom: normalizedFilters.dateFrom,
dateTo: normalizedFilters.dateTo,
limit: pageSize,
orderBy: normalizedFilters.orderBy || 'received_at',
orderDirection: normalizedFilters.orderDirection || 'desc',
};
throttledDebug('base_query_params_built', 'Base query params built', {
params: JSON.stringify(params),
filters: JSON.stringify(normalizedFilters),
});
return params;
}, [normalizedFilters, pageSize, throttledDebug]);
// Debug: Log enabled condition
useEffect(() => {
throttledDebug('enabled_condition_check', 'Enabled condition check', {
enabled,
hasUser: !!user,
userId: user?.id,
enabledCondition: enabled && !!user,
});
}, [enabled, user, throttledDebug]);
// Infinite query for newsletters
// In useInfiniteNewsletters.ts
const { data, isLoading, error, fetchNextPage, hasNextPage, isFetchingNextPage, refetch } =
useInfiniteQuery({
queryKey,
queryFn: async ({ pageParam = 0 }) => {
throttledDebug('fetch_page', 'Fetching newsletters page', {
page: pageParam / pageSize + 1,
offset: pageParam,
filters: JSON.stringify(normalizedFilters),
});
const queryParams = {
...baseQueryParams,
offset: pageParam,
};
try {
// Use NewsletterService as the single source of truth
// The service will handle tag filtering internally
const result = await optimizedNewsletterService.getAll(queryParams);
throttledDebug('fetch_page_success', 'Newsletters fetched successfully', {
count: result.data.length,
total: result.count,
hasMore: result.hasMore,
page: pageParam / pageSize + 1,
});
return result;
} catch (err) {
throttledDebug('fetch_page_error', 'Failed to fetch newsletters', {
pageParam,
pageSize,
filters: JSON.stringify(normalizedFilters),
});
throw err;
}
},
enabled: shouldRunQuery,
getNextPageParam: (lastPage, allPages) => {
// Check if there's more data available
if (!lastPage.hasMore) {
if (debug) {
log.debug('No more pages available - hasMore is false', {
action: 'no_more_pages',
metadata: {
totalCount: lastPage.count,
currentPageDataLength: lastPage.data.length,
hasMore: lastPage.hasMore,
totalPages: allPages.length,
totalFetched: allPages.reduce((sum, page) => sum + page.data.length, 0),
},
});
}
return undefined;
}
// Calculate next offset based on current data
const totalFetched = allPages.reduce((sum, page) => sum + page.data.length, 0);
// Return next offset if there's more data, otherwise undefined
return lastPage.hasMore && totalFetched < lastPage.count ? totalFetched : undefined;
},
initialPageParam: 0,
staleTime: _staleTime, // Use configurable stale time from options
refetchOnWindowFocus: _refetchOnWindowFocus,
refetchOnMount: _refetchOnMount, // Can be overridden via options
refetchOnReconnect: false, // Prevent refetch on reconnect
retry: 3,
retryDelay: (attemptIndex) => Math.min(1000 * Math.pow(2, attemptIndex), 10000),
});
// Debug: Log query state - optimized to reduce re-renders
useEffect(() => {
if (debug) {
const pagesCount = data?.pages?.length || 0;
const totalNewsletters = data?.pages?.reduce((sum, page) => sum + page.data.length, 0) || 0;
log.debug('Query state updated', {
action: 'query_state_updated',
metadata: {
enabled: enabled && !!user,
hasUser: !!user,
userId: user?.id,
isLoading,
hasError: !!error,
hasData: !!data,
pagesCount,
totalNewsletters,
hasNextPage,
isFetchingNextPage,
queryKey: JSON.stringify(queryKey),
},
});
}
}, [
debug,
enabled,
user,
isLoading,
error,
hasNextPage,
isFetchingNextPage,
log,
queryKey,
data,
]);
// Flatten all pages into a single array of newsletters
const newsletters = useMemo(() => {
if (!data?.pages) {
if (debug) {
log.debug('No data pages available', {
action: 'no_data_pages',
metadata: {
hasData: !!data,
dataKeys: data ? Object.keys(data) : [],
pagesLength: data?.pages?.length || 0,
},
});
}
return [];
}
const allNewsletters = data.pages.flatMap((page) => page.data);
if (debug) {
log.debug('Total newsletters loaded', {
action: 'calculate_total_newsletters',
metadata: {
count: allNewsletters.length,
pages: data.pages.length,
lastPageSize: data.pages[data.pages.length - 1]?.data.length || 0,
firstPageData:
data.pages[0]?.data?.slice(0, 2).map((n) => ({ id: n.id, title: n.title })) || [],
allPagesDataLengths: data.pages.map((page) => page.data?.length || 0),
},
});
}
return allNewsletters;
}, [data, debug, log]);
// Calculate metadata
const totalCount = data?.pages[0]?.count || 0;
const pageCount = Math.ceil(totalCount / pageSize);
// Debug logging for hasNextPage calculation - optimized to reduce re-renders
useEffect(() => {
if (debug) {
const pagesLength = data?.pages?.length || 0;
const lastPageHasMore = data?.pages?.[data.pages.length - 1]?.hasMore;
const lastPageDataLength = data?.pages?.[data.pages.length - 1]?.data?.length || 0;
log.debug('hasNextPage calculation', {
action: 'has_next_page_calculation',
metadata: {
hasNextPage,
totalCount,
currentNewsletters: newsletters.length,
pageCount,
currentPage,
isFetchingNextPage,
pages: pagesLength,
lastPageHasMore,
lastPageDataLength,
},
});
}
}, [
hasNextPage,
totalCount,
newsletters.length,
pageCount,
currentPage,
isFetchingNextPage,
debug,
log,
data,
]);
// Update current page when data changes
useMemo(() => {
if (data?.pages) {
const newCurrentPage = data.pages.length;
if (newCurrentPage !== currentPage) {
setCurrentPage(newCurrentPage);
}
}
}, [data, currentPage]);
// Enhanced fetch next page with error handling
const handleFetchNextPage = useCallback(() => {
if (hasNextPage && !isFetchingNextPage) {
if (debug) {
log.debug('Loading next page', {
action: 'load_next_page',
metadata: {
currentNewsletters: newsletters.length,
totalCount,
hasNextPage,
},
});
}
fetchNextPage();
} else if (debug) {
log.debug('Skipping next page load', {
action: 'skip_next_page_load',
metadata: {
hasNextPage,
isFetchingNextPage,
},
});
}
}, [hasNextPage, isFetchingNextPage, fetchNextPage, debug, newsletters.length, totalCount, log]);
// Enhanced refetch with debug logging
const handleRefetch = useCallback(() => {
if (debug) {
log.debug('Refetching newsletters', {
action: 'refetch_newsletters',
metadata: {
filters: JSON.stringify(normalizedFilters),
currentCount: newsletters.length,
},
});
}
setCurrentPage(1);
return refetch();
}, [refetch, debug, normalizedFilters, newsletters.length, log]);
return {
newsletters,
isLoading,
isLoadingMore: isFetchingNextPage,
error: error as Error | null,
hasNextPage: hasNextPage || false,
isFetchingNextPage,
fetchNextPage: handleFetchNextPage,
refetch: handleRefetch,
totalCount,
pageCount,
currentPage,
};
};
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