import type { Database } from "bun:sqlite";
import { beforeAll, describe, expect, test } from "bun:test";
import { mkdtemp, unlink, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import type { Hono } from "hono";
import { openBucket } from "../src/bucket/reader.ts";
import { syncAll } from "../src/bucket/sync.ts";
import { openMirror } from "../src/mirror/store.ts";
import { createApp } from "../src/server/app.ts";
import { openKeprDb } from "../src/server/db.ts";
import { makeRepos } from "./fixture.ts";

let app: Hono;
let kepr: Database;
let dataDir: string;
let alphaSaves: { id: string; message: string; is_checkpoint: boolean }[];
let vaultSave: string;
const body = async (path: string) => (await app.request(path)).text();

// alpha (public): a save, a checkpoint holding a draft no real save keeps, then a second save.
// vault (private): one save whose message, category, language and ID must never show.
beforeAll(async () => {
	const repos = await makeRepos(["alpha", "vault"]);
	const root = join(repos.bucketDir, "..");
	await writeFile(join(root, "work/alpha/draft.txt"), "a draft only a checkpoint holds\n");
	repos.koh("alpha", "checkpoint", "checkpoint message never shown");
	await unlink(join(root, "work/alpha/draft.txt"));
	await writeFile(join(root, "work/alpha/README.md"), "# alpha\n\nThe alpha project, grown.\n");
	await writeFile(join(root, "work/alpha/main.ts"), "export const a = 1;\n");
	repos.koh("alpha", "save", "grow alpha");
	await writeFile(join(root, "work/vault/main.zig"), "const x = 1;\n");
	repos.koh("vault", "save", "vault message");
	alphaSaves = JSON.parse(repos.koh("alpha", "log", "--json")).saves;
	vaultSave = JSON.parse(repos.koh("vault", "log", "--json")).head_id;

	dataDir = await mkdtemp(join(tmpdir(), "kepr-front-"));
	kepr = openKeprDb(dataDir);
	const bucket = openBucket({ kind: "folder", path: repos.bucketDir });
	await syncAll({
		bucket,
		kepr,
		mirrorDir: join(dataDir, "mirror"),
		tarballDir: join(dataDir, "tarballs"),
	});
	kepr.run("UPDATE repos SET public = 1, category = 'tools' WHERE name = 'alpha'");
	kepr.run("UPDATE repos SET category = 'secretcat' WHERE name = 'vault'");
	for (const [key, value] of [
		["handle", "ada"],
		["tagline", "A library of small tools."],
		["bio", "Writes small tools."],
		["location", "Lisbon"],
		["link", "https://ada.example"],
		["building_since", "may 2026"],
	]) {
		kepr.query("INSERT INTO settings (key, value) VALUES (?, ?)").run(key, value);
	}
	kepr.run(
		`INSERT INTO issues (repo, number, title, body, type, filed_at, hidden) VALUES
		('alpha', 1, 'a', 'b', 'bug', 1, 0), ('alpha', 2, 'c', 'd', 'bug', 1, 1),
		('vault', 1, 'e', 'f', 'bug', 1, 0)`,
	);
	kepr.run(
		`INSERT INTO downloads (repo, version, platform, count) VALUES
		('alpha', '1.0.0', 'linux-x86_64', 7), ('alpha', '0.9.0', 'linux-x86_64', 100),
		('vault', '1.0.0', 'linux-x86_64', 1000)`,
	);
	kepr.run("INSERT INTO release_settings (repo, version, hidden) VALUES ('alpha', '0.9.0', 1)");
	app = createApp(
		{
			domain: "kepr.example",
			dataDir,
			adminPasswordHash: "$argon2id$x",
			bucket: { kind: "folder", path: repos.bucketDir },
		},
		kepr,
	);
});

const checkpoint = () => alphaSaves.find((save) => save.is_checkpoint)?.id as string;
const realSaves = () => alphaSaves.filter((save) => !save.is_checkpoint);

describe("front page", () => {
	test("counts distinct objects of public repos' real saves only", async () => {
		// alpha's real saves hold .kohignore, two READMEs and main.ts; its mirror also holds the
		// draft only the checkpoint kept, and the private repo's objects are elsewhere.
		const mirror = openMirror(join(dataDir, "mirror"), "alpha");
		expect(mirror.query("SELECT COUNT(*) AS n FROM objects").get()).toEqual({ n: 5 });
		expect(await body("/")).toContain("The library knows<br>4 things.");
	});

	test("the ticker, cloud and cards show public saves, never checkpoints or private repos", async () => {
		const html = await body("/");
		expect(html).toContain('<div class="ticker" aria-hidden="true">');
		expect(html).toContain("<span>grow alpha</span>");
		expect(html).toContain("<span>release alpha</span>");
		expect(html).toContain('class="tc-tag tc-5">tools<');
		expect(html).toContain('class="tc-tag tc-5">TypeScript<');
		expect(html).toContain('<span class="repo-card-saves mono">2 saves</span>');
		expect(html).toContain("The alpha project, grown.");
		expect(html).toContain("A library of small tools.");
		expect(html).toContain('href="/docs">run your own library →</a>');
		for (const secret of [
			"checkpoint message",
			"vault",
			"secretcat",
			"Zig",
			checkpoint(),
			vaultSave,
		]) {
			expect(html).not.toContain(secret);
		}
	});

	test("the nav has browse, docs and support, and no login link", async () => {
		const html = await body("/");
		expect(html).toContain(
			'<a href="/browse">browse</a><a href="/docs">docs</a><a href="/support">support</a>',
		);
		expect(html).not.toContain("sign-in");
	});

	test("browse lists public repos as cards", async () => {
		const html = await body("/browse");
		expect(html).toContain('<a class="repo-card" href="/alpha">');
		expect(html).not.toContain("vault");
		// One tick per real save.
		expect(html.match(/<line x1=/g)?.length).toBe(realSaves().length);
	});
});

test("motion stops under prefers-reduced-motion", async () => {
	const css = await Bun.file(join(import.meta.dir, "../public/css/kepr.css")).text();
	const blocks = [...css.matchAll(/@media \(prefers-reduced-motion: reduce\) \{([\s\S]*?)\n\}/g)]
		.map((m) => m[1] as string)
		.join("\n");
	for (const selector of [".ticker-row", ".ticker-track", ".tri-outer"]) {
		expect(blocks).toContain(selector);
	}
	expect(blocks).toContain("animation: none;");
});