// Covers §24's selected-repo workspace: the summary, detected and shown languages, where the
// description comes from, and the repo's releases.

import { Database } from "bun:sqlite";
import { beforeAll, describe, expect, test } from "bun:test";
import { mkdtemp, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { openKeprDb } from "../src/server/db.ts";
import { Browser, type Instance, instance } from "./browser.ts";
import { makeRepos, writeRelease } from "./fixture.ts";

describe("the selected repo's workspace (§24)", () => {
	let inst: Instance;
	let browser: Browser;
	let bucketDir: string;
	const workspace = async () => (await browser.get("/admin/repos?repo=app")).text();
	const save = (fields: Record<string, string>) =>
		browser.post("/admin/repos/app", { public: "1", ...fields });

	beforeAll(async () => {
		const repos = await makeRepos(["app"]);
		const work = join(repos.bucketDir, "..", "work", "app");
		await writeFile(join(work, "main.ts"), "export const a = 1;\nexport const b = 2;\n");
		await writeFile(join(work, "tool.py"), "print(1)\n");
		repos.koh("app", "save", "add sources");
		repos.koh("app", "offer");
		const head = JSON.parse(repos.koh("app", "view", "--json")).head_id as string;
		for (const version of ["1.0.0", "1.1.0"]) {
			await writeRelease(repos.bucketDir, "app", {
				version,
				save: head,
				files: [{ platform: "linux-x86_64", name: "app", bytes: new Uint8Array([1]) }],
			});
		}
		bucketDir = repos.bucketDir;
		inst = await instance(repos.bucketDir);
		inst.kepr.run(
			`INSERT INTO issues (repo, number, title, body, type, filed_at)
			 VALUES ('app', 1, 'Broken', 'It broke', 'bug', 0)`,
		);
		browser = new Browser(inst.app);
		await browser.signIn();
		await save({});
		await inst.app.request("/app/releases/1.1.0/linux-x86_64");
		await inst.app.request("/app/releases/1.1.0/linux-x86_64");
	});

	test("summarises saves, lines, the newest version, open issues and downloads", async () => {
		const page = await workspace();
		expect(page).toContain('class="admin-vitals"');
		expect(page).toMatch(/<strong>2<\/strong><span class="mono">saves<\/span>/);
		expect(page).toMatch(/<strong>3<\/strong><span class="mono">lines<\/span>/);
		expect(page).toMatch(/<strong>1\.1\.0<\/strong><span class="mono">newest version<\/span>/);
		expect(page).toMatch(/<strong>1<\/strong><span class="mono">open issues<\/span>/);
		expect(page).toMatch(/<strong>2<\/strong><span class="mono">downloads<\/span>/);
	});

	test("one click per repo: its tab holds overview, settings, builds and archives together", async () => {
		const page = await workspace();
		expect(page).toContain('href="/admin/repos?repo=app" aria-current="page"');
		for (const mark of [
			'class="admin-vitals"',
			'name="hidden_paths"',
			'action="/admin/releases/app/1.1.0"',
			'action="/admin/repos/app/tarballs/delete"',
		]) {
			expect(page).toContain(mark);
		}
		for (const id of ["overview", "settings", "builds", "archives"]) {
			expect(page).toContain(`<section class="repo-section" id="${id}">`);
		}
		const saved = await save({});
		expect(saved.headers.get("location")).toBe("/admin/repos?repo=app&saved=1");
		const refused = await save({ languages: "a, b, c, d, e, f" });
		expect(await refused.text()).toContain('name="hidden_paths"');
	});

	test("lists the detected languages with their lines", async () => {
		const page = await workspace();
		expect(page).toContain('TypeScript <span class="muted">2 lines</span>');
		expect(page).toContain('Python <span class="muted">1 line</span>');
	});

	test("edits the description and details; blank hands them back to the README", async () => {
		expect(await workspace()).toMatch(/<textarea[^>]*name="description"[^>]*><\/textarea>/);
		const saved = await save({ description: "Own *words*", details: "## Usage\r\nRun it." });
		expect(saved.status).toBe(303);
		const page = await workspace();
		expect(page).toContain("Own *words*</textarea>");
		expect(page).toContain("## Usage\nRun it.</textarea>");
		const repo = await (await inst.app.request("/app")).text();
		expect(repo).toContain("Own <em>words</em>");
		expect(repo).toContain("Run it.");
		const long = await save({ details: "x".repeat(60_001) });
		expect(long.status).toBe(400);
		expect(await long.text()).toContain("Keep the details under 60,000 characters.");
		await save({ description: "", details: "" });
		expect(inst.kepr.query("SELECT description, details FROM repo_text").get()).toEqual({
			description: "",
			details: "",
		});
	});

	test("edits its builds in place, with visibility and downloads", async () => {
		inst.kepr.run(
			"INSERT INTO release_settings (repo, version, hidden) VALUES ('app', '1.0.0', 1)",
		);
		const page = await workspace();
		expect(page).toContain('action="/admin/releases/app/1.1.0"');
		expect(page).toContain("<span>shown</span><span>2 downloads</span>");
		expect(page).toContain("<span>hidden</span><span>0 downloads</span>");
		inst.kepr.run("DELETE FROM release_settings");
	});

	test("shown languages replace the header's detected language; blank brings it back", async () => {
		const header = async () => (await inst.app.request("/app")).text();
		expect(await header()).toContain('<span class="lang-badge">TypeScript</span>');
		expect((await save({ languages: " Zig ,  TypeScript" })).status).toBe(303);
		const shown = await header();
		expect(shown).toContain('<span class="lang-badge">Zig</span>');
		expect(shown).toContain('<span class="lang-badge">TypeScript</span>');
		expect(await workspace()).toContain('value="Zig, TypeScript"');
		expect((await save({ languages: "" })).status).toBe(303);
		const detected = await header();
		expect(detected).not.toContain('<span class="lang-badge">Zig</span>');
		expect(detected).toContain('<span class="lang-badge">TypeScript</span>');
	});

	test("refuses more than five languages, a long name or a control character", async () => {
		const refusals: [string, string][] = [
			["a, b, c, d, e, f", "up to five languages."],
			["x".repeat(31), "a language name is at most 30 characters."],
			["Zig\u0007", "a language name is printable text."],
		];
		for (const [languages, error] of refusals) {
			const response = await save({ languages });
			expect(response.status).toBe(400);
			expect(await response.text()).toContain(error);
		}
		expect(await workspace()).not.toContain('value="Zig');
	});

	test("deletes the repo's kept tarballs from the bucket", async () => {
		await save({});
		const head = (await inst.app.request("/app/archive/HEAD.tar.gz")).headers.get("location");
		expect((await inst.app.request(head ?? "")).status).toBe(200);
		const kept = new Bun.Glob("**/*.tar.gz");
		const keptIn = () => Array.fromAsync(kept.scan(join(bucketDir, ".kepr", "tarballs", "app")));
		expect(await keptIn()).toHaveLength(1);
		expect(await workspace()).toContain('action="/admin/repos/app/tarballs/delete"');
		const deleted = await browser.post("/admin/repos/app/tarballs/delete", {});
		expect(deleted.headers.get("location")).toBe("/admin/repos?repo=app&saved=1#archives");
		expect(await keptIn()).toEqual([]);
		expect((await inst.app.request(head ?? "")).status).toBe(200);
	});
});

test("an older kepr.db gains the shown-languages column when opened", async () => {
	const dir = await mkdtemp(join(tmpdir(), "kepr-old-db-"));
	const old = new Database(join(dir, "kepr.db"));
	old.run("CREATE TABLE repos (name TEXT PRIMARY KEY, public INTEGER NOT NULL DEFAULT 0)");
	old.run("INSERT INTO repos (name) VALUES ('app')");
	old.close();
	const db = openKeprDb(dir);
	expect(db.query<{ languages: string }, []>("SELECT languages FROM repos").get()?.languages).toBe(
		"",
	);
});

test("an older kepr.db loses card order and install lines, keeping each repo", async () => {
	const dir = await mkdtemp(join(tmpdir(), "kepr-old-db-"));
	const old = new Database(join(dir, "kepr.db"));
	old.run(`CREATE TABLE repos (
		name TEXT PRIMARY KEY, public INTEGER NOT NULL DEFAULT 0, sort_order INTEGER NOT NULL DEFAULT 0,
		install1 TEXT NOT NULL DEFAULT '', install2 TEXT NOT NULL DEFAULT '',
		install3 TEXT NOT NULL DEFAULT '')`);
	old.run("INSERT INTO repos (name, public, install1) VALUES ('app', 1, 'nix profile add app')");
	old.close();
	const db = openKeprDb(dir);
	const columns = db.query<{ name: string }, []>("PRAGMA table_info(repos)").all();
	expect(columns.map((column) => column.name)).not.toContain("install1");
	expect(columns.map((column) => column.name)).not.toContain("sort_order");
	expect(db.query("SELECT name, public FROM repos").all()).toEqual([{ name: "app", public: 1 }]);
});

test("no two elements of a repo's workspace share an id, whatever its versions are called", async () => {
	const repos = await makeRepos(["app"]);
	const head = JSON.parse(repos.koh("app", "view", "--json")).head_id as string;
	for (const version of ["category", "rename", "description", "1.0.0", "1.0.0-notes"]) {
		await writeRelease(repos.bucketDir, "app", {
			version,
			save: head,
			files: [{ platform: "linux-x86_64", name: "app", bytes: new Uint8Array([1]) }],
		});
	}
	const inst = await instance(repos.bucketDir);
	const browser = new Browser(inst.app);
	await browser.signIn();
	const page = await (await browser.get("/admin/repos?repo=app")).text();
	const ids = [...page.matchAll(/ id="([^"]+)"/g)].map((match) => match[1]);
	expect(ids.length).toBeGreaterThan(10);
	expect(ids.filter((id, i) => ids.indexOf(id) !== i)).toEqual([]);
});