import { Database } from "bun:sqlite";
import { afterEach, beforeEach, describe, expect, test } from "bun:test";
import { SCHEMA } from "../../db/schema";
import type { JellyfinItem } from "../../types";
import type { JellyfinConfig } from "../jellyfin";
import type { RescanConfig } from "../rescan";
import { _resetDedupe, processWebhookEvent } from "../webhook";

function makeDb(): Database {
	const db = new Database(":memory:");
	for (const stmt of SCHEMA.split(";")) {
		const trimmed = stmt.trim();
		if (trimmed) db.run(trimmed);
	}
	return db;
}

const JF: JellyfinConfig = { url: "http://jf", apiKey: "k" };
const RESCAN_CFG: RescanConfig = {
	audioLanguages: [],
	radarr: null,
	sonarr: null,
	radarrLibrary: null,
	sonarrLibrary: null,
};

function fakeItem(over: Partial<JellyfinItem> = {}): JellyfinItem {
	return {
		Id: "jf-1",
		Type: "Movie",
		Name: "Test Movie",
		Path: "/movies/Test.mkv",
		Container: "mkv",
		MediaStreams: [
			{ Type: "Video", Index: 0, Codec: "h264" },
			{ Type: "Audio", Index: 1, Codec: "aac", Language: "eng", IsDefault: true },
		],
		...over,
	};
}

describe("processWebhookEvent — acceptance", () => {
	beforeEach(() => _resetDedupe());
	afterEach(() => _resetDedupe());

	test("rejects unknown events", async () => {
		const db = makeDb();
		const res = await processWebhookEvent(
			{ event: "PlaybackStart", itemId: "jf-1", itemType: "Movie" },
			{ db, jellyfin: JF, rescanCfg: RESCAN_CFG, getItemFn: async () => fakeItem() },
		);
		expect(res.accepted).toBe(false);
		expect(res.reason).toContain("event");
	});

	test("rejects non-Movie/Episode types", async () => {
		const db = makeDb();
		const res = await processWebhookEvent(
			{ event: "ItemUpdated", itemId: "jf-1", itemType: "Trailer" },
			{ db, jellyfin: JF, rescanCfg: RESCAN_CFG, getItemFn: async () => fakeItem({ Type: "Trailer" }) },
		);
		expect(res.accepted).toBe(false);
		expect(res.reason).toContain("itemType");
	});

	test("rejects missing itemId", async () => {
		const db = makeDb();
		const res = await processWebhookEvent(
			{ event: "ItemUpdated", itemType: "Movie" },
			{ db, jellyfin: JF, rescanCfg: RESCAN_CFG, getItemFn: async () => fakeItem() },
		);
		expect(res.accepted).toBe(false);
		expect(res.reason).toContain("itemId");
	});

	test("dedupes bursts within 5s and accepts again after", async () => {
		const db = makeDb();
		let fakeNow = 1_000_000;
		const getItemFn = async () => fakeItem();
		const payload = { event: "ItemUpdated", itemId: "jf-1", itemType: "Movie" };

		const first = await processWebhookEvent(payload, {
			db,
			jellyfin: JF,
			rescanCfg: RESCAN_CFG,
			getItemFn,
			now: () => fakeNow,
		});
		expect(first.accepted).toBe(true);

		fakeNow += 1000;
		const second = await processWebhookEvent(payload, {
			db,
			jellyfin: JF,
			rescanCfg: RESCAN_CFG,
			getItemFn,
			now: () => fakeNow,
		});
		expect(second.accepted).toBe(false);
		expect(second.reason).toBe("deduped");

		fakeNow += 5001;
		const third = await processWebhookEvent(payload, {
			db,
			jellyfin: JF,
			rescanCfg: RESCAN_CFG,
			getItemFn,
			now: () => fakeNow,
		});
		expect(third.accepted).toBe(true);
	});

	test("drops when Jellyfin returns no item", async () => {
		const db = makeDb();
		const res = await processWebhookEvent(
			{ event: "ItemUpdated", itemId: "jf-missing", itemType: "Movie" },
			{ db, jellyfin: JF, rescanCfg: RESCAN_CFG, getItemFn: async () => null },
		);
		expect(res.accepted).toBe(false);
		expect(res.reason).toContain("no item");
	});
});

describe("processWebhookEvent — done-status override", () => {
	beforeEach(() => _resetDedupe());

	async function runWebhook(db: Database, item: JellyfinItem, cfg: RescanConfig = RESCAN_CFG) {
		return processWebhookEvent(
			{ event: "ItemUpdated", itemId: item.Id, itemType: item.Type as "Movie" | "Episode" },
			{ db, jellyfin: JF, rescanCfg: cfg, getItemFn: async () => item },
		);
	}

	function planStatusFor(db: Database, jellyfinId: string): string {
		return (
			db
				.prepare("SELECT rp.status FROM review_plans rp JOIN media_items mi ON mi.id = rp.item_id WHERE mi.jellyfin_id = ?")
				.get(jellyfinId) as { status: string }
		).status;
	}

	test("a webhook that analyzes to is_noop=1 leaves a done plan as done", async () => {
		const db = makeDb();
		const fresh = fakeItem();
		await runWebhook(db, fresh);

		db
			.prepare(
				"UPDATE review_plans SET status = 'done' WHERE item_id = (SELECT id FROM media_items WHERE jellyfin_id = ?)",
			)
			.run(fresh.Id);

		_resetDedupe();
		await runWebhook(db, fresh);
		expect(planStatusFor(db, fresh.Id)).toBe("done");
	});

	test("a webhook that analyzes to is_noop=0 flips a done plan back to pending", async () => {
		const db = makeDb();
		// audio_languages=['deu'] means a file with english OG + french extra
		// audio should remove french → is_noop=0.
		const cfg: RescanConfig = { ...RESCAN_CFG, audioLanguages: ["deu"] };
		const fresh = fakeItem({
			MediaStreams: [
				{ Type: "Video", Index: 0, Codec: "h264" },
				{ Type: "Audio", Index: 1, Codec: "aac", Language: "eng", IsDefault: true },
				{ Type: "Audio", Index: 2, Codec: "aac", Language: "fra" },
			],
		});

		await runWebhook(db, fresh, cfg);
		db
			.prepare(
				"UPDATE review_plans SET status = 'done' WHERE item_id = (SELECT id FROM media_items WHERE jellyfin_id = ?)",
			)
			.run(fresh.Id);

		_resetDedupe();
		await runWebhook(db, fresh, cfg);
		expect(planStatusFor(db, fresh.Id)).toBe("pending");
	});
});