import { describe, test, expect, beforeAll, afterAll } from "vitest"
import { existsSync, readFileSync, rmSync, mkdirSync } from "node:fs"
import path from "node:path"
import os from "node:os"
import { fileURLToPath } from "node:url"
import { spawnSync } from "node:child_process"

const __dirname = path.dirname(fileURLToPath(import.meta.url))
const DRAW_IMAGE_DIR = path.resolve(__dirname, "..")
const TMP = path.join(os.tmpdir(), `draw-image-e2e-no-icon-${process.pid}`)

beforeAll(() => {
  if (existsSync(TMP)) rmSync(TMP, { recursive: true, force: true })
  mkdirSync(TMP, { recursive: true })
})

afterAll(() => {
  if (existsSync(TMP)) rmSync(TMP, { recursive: true, force: true })
})

function runCli(args: string[]): { status: number; stdout: string; stderr: string } {
  return spawnSync("node", ["--experimental-strip-types", path.join(DRAW_IMAGE_DIR, "cli.ts"), ...args], {
    encoding: "utf-8",
    cwd: DRAW_IMAGE_DIR,
  })
}

describe("e2e — no icon render", () => {
  test("exit 0 and valid PNG without icon slot", () => {
    const out = path.join(TMP, "no-icon.png")
    const r = runCli(["render", "cover", "--title", "Default Brand", "--out", out, "--template-dir", "tests/fixtures"])
    expect(r.status, `stderr: ${r.stderr}`).toBe(0)
    expect(existsSync(out)).toBe(true)
    const buf = readFileSync(out)
    expect(buf[0]).toBe(0x89)
    expect(buf[1]).toBe(0x50)
  })
})