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createContext,
useContext,
useState,
useCallback,
useEffect,
useMemo,
useRef,
} from "react";
import type { Channel, Category, Provider } from "@/lib/types";
import { parseDateMs } from "@/lib/date";
import {
loadM3uPlaylist,
loadM3uFile as loadM3uFileApi,
loadXtreamProvider,
getProviders,
removeProvider as removeProviderApi,
getAllChannels,
refreshProvider as refreshProviderApi,
refreshEpg as refreshEpgApi,
updateProvider as updateProviderApi,
toggleFavorite as toggleFavoriteApi,
} from "@/lib/tauri";
// --- Provider settings (stored in localStorage) ---
export interface ProviderSettings {
autoRefresh: boolean;
refreshIntervalHours: number;
epgAutoRefresh: boolean;
epgRefreshIntervalHours: number;
}
export const loadProviderSettings = (id: string): ProviderSettings => {
try {
const raw = localStorage.getItem(`provider-settings-${id}`);
if (raw) {
const parsed = JSON.parse(raw);
// Migrate from old 3-way string format ("disabled"|"startup"|"interval")
if (typeof parsed.autoRefresh === "string") {
return {
autoRefresh: parsed.autoRefresh !== "disabled",
refreshIntervalHours: parsed.refreshIntervalHours ?? 24,
epgAutoRefresh: parsed.epgAutoRefresh ?? true,
epgRefreshIntervalHours: parsed.epgRefreshIntervalHours ?? 24,
};
}
return {
epgAutoRefresh: true,
epgRefreshIntervalHours: 24,
...parsed,
} as ProviderSettings;
}
} catch {}
return {
autoRefresh: false,
refreshIntervalHours: 24,
epgAutoRefresh: true,
epgRefreshIntervalHours: 24,
};
};
export const saveProviderSettings = (id: string, settings: ProviderSettings) => {
localStorage.setItem(`provider-settings-${id}`, JSON.stringify(settings));
};
// EPG last-refresh timestamp stored separately (providers have no epg_last_updated field)
const epgLastRefreshKey = (id: string) => `epg-last-refresh-${id}`;
export const getEpgLastRefresh = (id: string): number =>
parseInt(localStorage.getItem(epgLastRefreshKey(id)) ?? "0", 10);
export const setEpgLastRefresh = (id: string) =>
localStorage.setItem(epgLastRefreshKey(id), String(Date.now()));
// --- Context ---
interface ChannelsContextValue {
channels: Channel[];
categories: Category[];
providers: Provider[];
initialized: boolean;
loading: boolean;
error: string | null;
loadM3u: (name: string, url: string) => Promise<void>;
loadM3uFile: (name: string, path: string) => Promise<void>;
loadXtream: (name: string, url: string, username: string, password: string) => Promise<void>;
refreshProviders: () => Promise<void>;
refreshChannels: () => Promise<void>;
refreshProvider: (id: string) => Promise<void>;
updateProvider: (
id: string,
name: string,
url: string,
username?: string,
password?: string
) => Promise<void>;
removeProvider: (id: string) => Promise<void>;
toggleFavorite: (channelId: string) => Promise<void>;
}
export const ChannelsContext = createContext<ChannelsContextValue | null>(null);
export const useChannelsProvider = (): ChannelsContextValue => {
const [channels, setChannels] = useState<Channel[]>([]);
const [categories, setCategories] = useState<Category[]>([]);
const [providers, setProviders] = useState<Provider[]>([]);
const [initialized, setInitialized] = useState(false);
const [loading, setLoading] = useState(false);
const [error, setError] = useState<string | null>(null);
const channelIndex = useMemo(() => {
const m = new Map<string, number>();
channels.forEach((ch, i) => m.set(ch.id, i));
return m;
}, [channels]);
const deriveCategories = (chs: Channel[]) => {
const map = new Map<string, number>();
for (const ch of chs) {
map.set(ch.groupTitle, (map.get(ch.groupTitle) ?? 0) + 1);
}
setCategories(
Array.from(map.entries()).map(([name, count], i) => ({
id: `cat-${i}`,
name,
channelCount: count,
}))
);
};
const refreshChannels = useCallback(async () => {
try {
const chs = await getAllChannels();
setChannels(chs);
deriveCategories(chs);
} catch (e) {
setError(String(e));
}
}, []);
const refreshProviders = useCallback(async () => {
try {
setProviders(await getProviders());
} catch (e) {
setError(String(e));
} finally {
setInitialized(true);
}
}, []);
const refreshProvider = useCallback(
async (id: string) => {
try {
await refreshProviderApi(id);
await refreshProviders();
await refreshChannels();
} catch (e) {
setError(String(e));
throw e;
}
},
[refreshProviders, refreshChannels]
);
const updateProvider = useCallback(
async (id: string, name: string, url: string, username?: string, password?: string) => {
try {
await updateProviderApi(id, name, url, username, password);
await refreshProviders();
} catch (e) {
setError(String(e));
throw e;
}
},
[refreshProviders]
);
const loadM3u = useCallback(
async (name: string, url: string) => {
setLoading(true);
setError(null);
try {
await loadM3uPlaylist(name, url);
await refreshProviders();
await refreshChannels();
} catch (e) {
setError(String(e));
throw e;
} finally {
setLoading(false);
}
},
[refreshProviders, refreshChannels]
);
const loadM3uFile = useCallback(
async (name: string, path: string) => {
setLoading(true);
setError(null);
try {
await loadM3uFileApi(name, path);
await refreshProviders();
await refreshChannels();
} catch (e) {
setError(String(e));
throw e;
} finally {
setLoading(false);
}
},
[refreshProviders, refreshChannels]
);
const loadXtream = useCallback(
async (name: string, url: string, username: string, password: string) => {
setLoading(true);
setError(null);
try {
await loadXtreamProvider(name, url, username, password);
await refreshProviders();
await refreshChannels();
} catch (e) {
setError(String(e));
throw e;
} finally {
setLoading(false);
}
},
[refreshProviders, refreshChannels]
);
const removeProvider = useCallback(
async (id: string) => {
try {
await removeProviderApi(id);
await refreshProviders();
await refreshChannels();
} catch (e) {
setError(String(e));
}
},
[refreshProviders, refreshChannels]
);
const toggleFavorite = useCallback(
async (channelId: string) => {
try {
const newFavorite = await toggleFavoriteApi(channelId);
setChannels((prev) => {
const idx = channelIndex.get(channelId);
if (idx === undefined) return prev;
const next = [...prev];
next[idx] = { ...next[idx], isFavorite: newFavorite };
return next;
});
} catch (e) {
setError(String(e));
}
},
[channelIndex]
);
// Initial load — ref guard prevents StrictMode double-mount from firing twice
const didInit = useRef(false);
useEffect(() => {
if (didInit.current) return;
didInit.current = true;
refreshProviders();
refreshChannels();
}, [refreshProviders, refreshChannels]);
// Keep providers ref current so interval can read it without re-registering
const providersRef = useRef<Provider[]>([]);
useEffect(() => {
providersRef.current = providers;
}, [providers]);
const refreshProviderRef = useRef(refreshProvider);
useEffect(() => {
refreshProviderRef.current = refreshProvider;
}, [refreshProvider]);
const refreshEpgApiRef = useRef(refreshEpgApi);
useEffect(() => {
refreshEpgApiRef.current = refreshEpgApi;
}, []);
// Poll every 60s to check if any provider/EPG is due for refresh.
// Using a ref-based approach avoids resetting timers on every providers update.
useEffect(() => {
const tick = () => {
const now = Date.now();
for (const p of providersRef.current) {
const {
autoRefresh,
refreshIntervalHours,
epgAutoRefresh,
epgRefreshIntervalHours,
} = loadProviderSettings(p.id);
if (autoRefresh) {
const lastMs = parseDateMs(p.lastUpdated);
if (now - lastMs >= refreshIntervalHours * 60 * 60 * 1000) {
refreshProviderRef.current(p.id).catch(console.error);
}
}
if (epgAutoRefresh && p.epgUrl) {
const lastMs = getEpgLastRefresh(p.id);
if (now - lastMs >= epgRefreshIntervalHours * 60 * 60 * 1000) {
refreshEpgApiRef
.current(p.id)
.then(() => setEpgLastRefresh(p.id))
.catch(console.error);
}
}
}
};
tick(); // fire immediately on mount
const id = setInterval(tick, 60_000);
return () => clearInterval(id);
}, []);
return {
channels,
categories,
providers,
initialized,
loading,
error,
loadM3u,
loadM3uFile,
loadXtream,
refreshProviders,
refreshChannels,
refreshProvider,
updateProvider,
removeProvider,
toggleFavorite,
};
};
export const useChannels = (): ChannelsContextValue => {
const ctx = useContext(ChannelsContext);
if (!ctx) throw new Error("useChannels must be used within a ChannelsProvider");
return ctx;
};
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