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// Copyright (C) 2026 Max Boksem. See NOTICE for additional terms under GPLv3 section 7.
import { useState, useEffect, useCallback } from "react";
import type { Update } from "@tauri-apps/plugin-updater";
import { refreshProvider, refreshEpg } from "@/lib/tauri";
import {
loadProviderSettings,
getEpgLastRefresh,
setEpgLastRefresh,
useChannels,
} from "@/hooks/useChannels";
import { findDueRefreshes, refreshKeys } from "@/lib/refresh-schedule";
import type { UpdateState } from "@/hooks/useUpdateChecker";
import { readStorage, SPLASH_SHOWN_KEY, writeStorage } from "@/lib/storage";
import { useLatestRef } from "@/hooks/useLatestRef";
export type StepStatus = "pending" | "active" | "done" | "error";
export interface SplashStep {
id: string;
label: string;
status: StepStatus;
}
export interface SplashScreenState {
steps: SplashStep[];
allDone: boolean;
progress: number;
update: Update | null;
dismissed: boolean;
hasProviders: boolean;
dismiss: () => void;
}
/** One of the splash steps that refreshes a list of providers. */
interface RefreshStep {
id: string;
ids: string[];
refresh: (id: string) => Promise<unknown>;
labels: {
active: string;
failed: string;
/** Plural noun for the partial failure message. */
sources: string;
done: string;
upToDate: string;
none: string;
};
}
interface UseSplashScreenOptions {
updateState: UpdateState;
onComplete?: (didRefreshProviders: boolean) => void;
}
export const useSplashScreen = (options: UseSplashScreenOptions): SplashScreenState => {
const { updateState, onComplete } = options;
const onCompleteRef = useLatestRef(onComplete);
const [alreadyShown] = useState(() => readStorage(SPLASH_SHOWN_KEY, "session") === "true");
// Consume providers from ChannelsContext (already loaded on mount — no extra Tauri calls)
const { providers, initialized, autoRefresh } = useChannels();
// Initialize all steps immediately so they're visible from the first render.
// The app store updates the mobile apps, so they skip the update check.
const [steps, setSteps] = useState<SplashStep[]>(() => {
if (alreadyShown) return [];
return [
{ id: "providers", label: "Loading providers & channels", status: "active" },
{ id: "playlists", label: "Checking playlists…", status: "pending" },
{ id: "epg", label: "Checking EPG…", status: "pending" },
...(updateState.supported
? [{ id: "updates", label: "Checking for updates", status: "pending" as const }]
: []),
];
});
const [allDone, setAllDone] = useState(alreadyShown);
const [dismissed, setDismissed] = useState(alreadyShown);
const [hasProviders, setHasProviders] = useState(false);
const dismiss = useCallback(() => {
writeStorage(SPLASH_SHOWN_KEY, "true", "session");
setDismissed(true);
}, []);
// Run once ChannelsContext has finished its initial provider fetch
useEffect(() => {
if (alreadyShown || !initialized) return;
let cancelled = false;
const setStepStatus = (id: string, status: StepStatus, label?: string) => {
setSteps((prev) =>
prev.map((s) => (s.id === id ? { ...s, status, ...(label ? { label } : {}) } : s))
);
};
const run = async () => {
const hasAnyProviders = providers.length > 0;
setHasProviders(hasAnyProviders);
// Step 1 complete — providers came from ChannelsContext, no extra fetch needed
setStepStatus("providers", "done", "Providers & channels loaded");
const { playlistIds: providerRefreshIds, epgIds: epgRefreshIds } = findDueRefreshes(
providers,
{ settingsFor: loadProviderSettings, epgLastRefreshFor: getEpgLastRefresh }
);
const didRefreshProviders = providerRefreshIds.length > 0;
// Runs the refresh through the poll's tracker. A refresh the poll already
// started is joined, not run twice, and the poll won't start this one
// again while it runs. One still waiting to retry after a failure
// counts as failed.
const tracked = (key: string, refresh: () => Promise<unknown>) =>
autoRefresh.run(key, refresh) ??
Promise.reject(new Error(`${key} failed recently, waiting to retry`));
// Runs one refresh step and returns false if the effect was cleaned up
// while it waited, so the caller stops too.
const runRefreshStep = async (step: RefreshStep): Promise<boolean> => {
setStepStatus(step.id, "active", step.labels.active);
if (step.ids.length === 0) {
setStepStatus(
step.id,
"done",
hasAnyProviders ? step.labels.upToDate : step.labels.none
);
return true;
}
const results = await Promise.allSettled(step.ids.map((id) => step.refresh(id)));
if (cancelled) return false;
const failed = results.filter((r) => r.status === "rejected").length;
if (failed === results.length) {
setStepStatus(step.id, "error", step.labels.failed);
} else if (failed > 0) {
setStepStatus(
step.id,
"error",
`Failed to refresh ${failed} of ${results.length} ${step.labels.sources}`
);
} else {
setStepStatus(step.id, "done", step.labels.done);
}
return true;
};
// Step 2: Refresh playlists (always shown; mark done immediately if nothing to do)
const playlistsFinished = await runRefreshStep({
id: "playlists",
ids: providerRefreshIds,
refresh: (id) => tracked(refreshKeys.playlist(id), () => refreshProvider(id)),
labels: {
active: "Refreshing playlists…",
failed: "Failed to refresh playlists",
sources: "playlists",
done: "Playlists refreshed",
upToDate: "Playlists up to date",
none: "No playlists configured",
},
});
if (!playlistsFinished) return;
// Step 3: Refresh EPG (always shown; mark done immediately if nothing to do)
const epgFinished = await runRefreshStep({
id: "epg",
ids: epgRefreshIds,
refresh: (id) =>
tracked(refreshKeys.epg(id), () =>
refreshEpg(id).then(() => setEpgLastRefresh(id))
),
labels: {
active: "Checking EPG…",
failed: "Failed to refresh EPG",
sources: "EPG sources",
done: "EPG refreshed",
upToDate: "EPG up to date",
none: "No EPG configured",
},
});
Iif (!epgFinished) return;
if (!updateState.supported) {
setAllDone(true);
onCompleteRef.current?.(didRefreshProviders);
return;
}
// Step 4: Check for updates via the shared hook.
// checkForUpdates() joins the in-flight promise if the mount check is
// still running, so only one actual check() call happens.
// Give up after 7s so the splash never gets stuck.
setStepStatus("updates", "active");
let foundUpdate: Update | null;
try {
foundUpdate = await Promise.race([
updateState.checkForUpdates(),
new Promise<null>((_, reject) =>
setTimeout(() => reject(new Error("Update check timed out")), 7_000)
),
]);
} catch {
if (cancelled) return;
setStepStatus("updates", "error", "Unable to check for updates");
setAllDone(true);
onCompleteRef.current?.(didRefreshProviders);
return;
}
if (cancelled) return;
if (foundUpdate) {
setStepStatus("updates", "done", `Update available — v${foundUpdate.version}`);
} else {
setStepStatus("updates", "done", "Up to date");
}
setAllDone(true);
onCompleteRef.current?.(didRefreshProviders);
};
run().catch((err) => {
// A step that throws must still leave the splash with a way out.
console.error("[splash] startup steps failed:", err);
Iif (cancelled) return;
setSteps((prev) =>
prev.map((s) =>
s.status === "pending" || s.status === "active" ? { ...s, status: "error" } : s
)
);
setAllDone(true);
onCompleteRef.current?.(true);
});
return () => {
cancelled = true;
};
// The steps run once, with the providers loaded at startup. Listing
// providers or updateState here would restart them whenever a refresh
// above updates the provider list.
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [initialized]);
const progress =
steps.length === 0
? 0
: steps.filter((s) => s.status === "done" || s.status === "error").length /
steps.length;
return {
steps,
allDone,
progress,
update: updateState.update,
dismissed,
hasProviders,
dismiss,
};
};
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