import { defineConfig, devices } from "@playwright/test";

// The one place a line of web/*.js is executed, and where a change to either
// file belongs. Why, and why Playwright: context/code/clients.md.
// Reuse is OPT-IN because adopting another checkout's server tests THAT tree,
// and the symptom is a result contradicting the file you just read.
const PORT = process.env.IMPROVISE_HARNESS_PORT ?? "8099";
const REUSE = process.env.IMPROVISE_HARNESS_REUSE === "1";

export default defineConfig({
  testDir: "./tests",
  fullyParallel: false,
  workers: 1,
  forbidOnly: !!process.env.CI,
  retries: 0,
  reporter: process.env.CI ? [["github"], ["list"]] : "list",
  timeout: 60_000,
  use: {
    baseURL: `http://127.0.0.1:${PORT}`,
    trace: "retain-on-failure",
  },
  // Chromium + Firefox run the OPFS battery; WebKit has no OPFS at all and is
  // kept for the day it does. Firefox ALSO runs the standalone half of the
  // shell spec — the deployment improvise-bck's criterion (1) names, which
  // mocks nothing; the `@mocked-peer` block it excludes is the one the
  // routeWebSocket argument was actually made about (improvise-zkkw). Every
  // other spec is Chromium-only: clients.md.
  projects: [
    { name: "chromium", use: { ...devices["Desktop Chrome"] } },
    {
      name: "firefox",
      use: { ...devices["Desktop Firefox"] },
      testMatch: /(opfs|shell)\.spec\.js/,
      grepInvert: /@mocked-peer/,
    },
    {
      name: "webkit",
      use: { ...devices["Desktop Safari"] },
      testMatch: /opfs\.spec\.js/,
    },
  ],
  webServer: {
    command: `python3 -m http.server ${PORT} --bind 127.0.0.1 --directory serve`,
    // The APP, not the site root — since improvise-kh8 the root is the landing
    // page, which would answer 200 with no bundle assembled at all.
    url: `http://127.0.0.1:${PORT}/app/index.html`,
    reuseExistingServer: REUSE,
    timeout: 30_000,
  },
});