import { describe, expect, test } from "bun:test";
import { join, resolve } from "node:path";
import { runTemplateTests } from "../views/testing.ts";
import { createViews } from "../views/api.ts";
import { parse } from "../views/engine/parser.ts";
import { lex } from "../views/engine/lexer.ts";
import { compileTemplate } from "../views/engine/compiler.ts";
import { registerAmezing } from "../modules/amezing/index.ts";

const root = resolve(import.meta.dir, "..");
const sample = join(root, "samples/hello-world");

describe("template tests", () => {
	test("SPUG anchors emit generated relation identities", () => {
		const nodes = parse(lex("nav\n  ul\n    li@hello1() First\n    li@row(item.id) Second"));
		const firstAnchor = nodes.nodes[0]?.kind === "element"
			? nodes.nodes[0].children[0]?.kind === "element"
				? nodes.nodes[0].children[0].children[0]
				: undefined
			: undefined;
		expect(firstAnchor).toMatchObject({ kind: "element", anchor: { name: "hello1" } });
		const compiled = compileTemplate(nodes.nodes, { path: "/tmp/relations.spug", dir: "/tmp" });
		expect(compiled.source).toContain('data-muddle-anchor');
		expect(compiled.source).toContain('"hello1"');
		expect(compiled.source).toContain('"row" + String(item.id)');
		expect(compiled.source).not.toContain("__muddleRelations");
	});

	test("SPUG derives a dotted anchor leaf from composition scope", () => {
		const nodes = parse(lex("a@docs.{section.id}(href='#' + section.id) Link"));
		const compiled = compileTemplate(nodes.nodes, { path: "/tmp/reflective.spug", dir: "/tmp" });
		expect(compiled.source).toContain('"docs." + String(section.id)');
	});

	test(
		"the assertions of the templates pass",
		async () => {
			const views = createViews({ viewsDir: join(sample, "modules/app/views") });
			registerAmezing(views);
			const run = await runTemplateTests({
				root: sample,
				viewRoots: [join(sample, "modules/app/views")],
				components: views.components,
				locals: {
					title: "muddle",
					nav: [{ label: "Home", href: "/" }],
				posts: [{ id: "test1", title: "Test1", excerpt: "Test1" }],
				post: { id: "test1", title: "Test1", excerpt: "Test1" },
				},
			});

			if (run.skipped) {
				console.log(`muddle: template tests skipped, ${run.reason}`);
				return;
			}

			expect(run.tested.length).toBeGreaterThan(0);
			for (const failure of run.failures) {
				console.error(`muddle: ${failure.key}\n${failure.error.message}`);
			}
			expect(run.failures).toEqual([]);
		},
		30_000,
	);
});