// Covers the version a repo's header shows without a build: what the project declares, by Koh's
// own rule (Koh 3's src/build/version.v), and a build's version over it.

import { describe, expect, test } from "bun:test";
import { writeFile } from "node:fs/promises";
import { join } from "node:path";
import { openBucket } from "../src/bucket/reader.ts";
import { syncAll } from "../src/bucket/sync.ts";
import { declaredVersion } from "../src/describe/version.ts";
import { instance } from "./browser.ts";
import { makeRepos, writeRelease } from "./fixture.ts";

const from = (files: Record<string, string>) => declaredVersion((path) => files[path] ?? null);

describe("the declared version", () => {
	test("reads CR, LF and CRLF lines as Koh does", () => {
		for (const ending of ["\r", "\n", "\r\n"]) {
			expect(from({ "v.mod": `Module {${ending}version: '1.2.3'${ending}}` })).toBe("1.2.3");
			expect(
				from({ "app/build.gradle.kts": `android {${ending}versionName = "1.2.3"${ending}}` }),
			).toBe("1.2.3");
		}
	});

	test("trims only Koh's ASCII whitespace and refuses an invalid first answer", () => {
		expect(from({ VERSION: " \n\t\v\f\r1.2.3 \n\t\v\f\r" })).toBe("1.2.3");
		for (const space of ["\u00a0", "\ufeff"]) {
			expect(
				from({ VERSION: `${space}1.2.3${space}`, "Cargo.toml": 'version = "9.0.0"' }),
			).toBeNull();
			expect(
				from({
					"Info.plist": `<key>CFBundleShortVersionString</key><string>${space}1.2.3${space}</string>`,
					"app/build.gradle.kts": 'versionName = "9.0.0"',
				}),
			).toBeNull();
		}
	});

	test("is the first source that answers, VERSION first", () => {
		expect(from({ VERSION: " 2.0.1\n", "package.json": '{ "version": "1.0.0" }' })).toBe("2.0.1");
		expect(from({ "package.json": '{\n  "name": "x",\n  "version": "3.0.199",\n}' })).toBe(
			"3.0.199",
		);
		expect(
			from({ "build.zig.zon": '.{\n    .version = "0.14.1",\n}', "Cargo.toml": 'version = "9"' }),
		).toBe("0.14.1");
		expect(from({ "v.mod": "Module {\n\tname: 'koh'\n\tversion: '3.2.27'\n}" })).toBe("3.2.27");
		expect(from({ "Cargo.toml": '[package]\nversion = "0.5.0"' })).toBe("0.5.0");
		expect(
			from({
				"Info.plist": "<key>CFBundleShortVersionString</key>\n\t<string> 1.4 </string>",
			}),
		).toBe("1.4");
	});

	test("reads Gradle's versionName literally, never a suffix, comment or variable", () => {
		const gradle = (text: string) => from({ "app/build.gradle.kts": text });
		expect(gradle('versionNameSuffix = "-dev"\nversionName = "2.17.43"')).toBe("2.17.43");
		expect(gradle('// versionName = "1.0"\nversionName "5.2.62"')).toBe("5.2.62");
		expect(gradle("versionName = libs.versions.app.get()")).toBeNull();
	});

	test("skips a source with no literal, and is none when the answer is not a version", () => {
		expect(
			from({ "package.json": '"version": pkg.version', "Cargo.toml": 'version = "1.1"' }),
		).toBe("1.1");
		expect(from({ VERSION: "not a version!", "package.json": '"version": "1.0.0"' })).toBeNull();
		expect(from({})).toBeNull();
	});
});

test("a repo's header shows its declared version, and a build's over it", async () => {
	const repos = await makeRepos(["app"]);
	await writeFile(
		join(repos.bucketDir, "..", "work", "app", "package.json"),
		'{\n  "name": "app",\n  "version": "1.2.3"\n}\n',
	);
	repos.koh("app", "save", "declare a version");
	repos.koh("app", "offer");
	const inst = await instance(repos.bucketDir);
	inst.kepr.run("UPDATE repos SET public = 1");
	const meta = async () =>
		/<p class="repo-meta">([^<]*)<\/p>/.exec(await (await inst.app.request("/app")).text())?.[1];
	expect(await meta()).toStartWith("v1.2.3 · ");
	const head = JSON.parse(repos.koh("app", "view", "--json")).head_id as string;
	await writeRelease(repos.bucketDir, "app", {
		version: "2.0.0",
		save: head,
		files: [{ platform: "linux-x86_64", name: "app", bytes: new Uint8Array([1]) }],
	});
	await syncAll({
		bucket: openBucket({ kind: "folder", path: repos.bucketDir }),
		kepr: inst.kepr,
		mirrorDir: join(inst.dataDir, "mirror"),
	});
	expect(await meta()).toStartWith("v2.0.0 · ");
});

test("a BOM in a saved VERSION is preserved and refuses a lower-priority version", async () => {
	const repos = await makeRepos(["app"]);
	const work = join(repos.bucketDir, "..", "work", "app");
	await writeFile(join(work, "VERSION"), "\ufeff1.2.3");
	await writeFile(join(work, "Cargo.toml"), 'version = "9.0.0"');
	repos.koh("app", "save", "declare a version with a BOM");
	repos.koh("app", "offer");
	const inst = await instance(repos.bucketDir);
	inst.kepr.run("UPDATE repos SET public = 1");
	const page = await (await inst.app.request("/app")).text();
	const meta = /<p class="repo-meta">([^<]*)<\/p>/.exec(page)?.[1];
	expect(meta).toBeDefined();
	expect(meta).not.toStartWith("v");
});