import * as fs from "node:fs";
import * as path from "node:path";
import { fileURLToPath } from "node:url";
import { describe, expect, it } from "vitest";

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const ROOT = path.resolve(__dirname, "..");

describe("generator", () => {
	const specPath = path.join(ROOT, "openapi.json");
	const generatedPath = path.join(ROOT, "src", "generated", "commands.ts");

	it("openapi.json should exist", () => {
		expect(fs.existsSync(specPath)).toBe(true);
	});

	it("generated commands file should exist", () => {
		expect(fs.existsSync(generatedPath)).toBe(true);
	});

	it("generated file should export registerGeneratedCommands", () => {
		const content = fs.readFileSync(generatedPath, "utf8");
		expect(content).toContain("export function registerGeneratedCommands");
	});

	it("generated file should import from client", () => {
		const content = fs.readFileSync(generatedPath, "utf8");
		expect(content).toContain('from "../client.js"');
	});

	it("generated file should contain command groups from the spec", () => {
		const spec = JSON.parse(fs.readFileSync(specPath, "utf8"));
		const content = fs.readFileSync(generatedPath, "utf8");

		// Only check groups that have a dot-separated action (group.action)
		const groups = new Set<string>();
		for (const p of Object.keys(spec.paths)) {
			const clean = p.replace(/^\//, "");
			const [group, ...rest] = clean.split(".");
			if (group && rest.length > 0) groups.add(group);
		}

		for (const group of groups) {
			expect(content).toContain(`"${group}.`);
		}
	});

	it("number of apiPost/apiGet calls should match valid endpoints", () => {
		const spec = JSON.parse(fs.readFileSync(specPath, "utf8"));
		const content = fs.readFileSync(generatedPath, "utf8");

		// Count only endpoints with group.action pattern
		let validEndpoints = 0;
		for (const p of Object.keys(spec.paths)) {
			const clean = p.replace(/^\//, "");
			const [group, ...rest] = clean.split(".");
			if (group && rest.length > 0) validEndpoints++;
		}

		const apiCalls = (content.match(/await api(Post|Get)\(/g) || []).length;
		expect(apiCalls).toBe(validEndpoints);
	});
});