import { test as base, expect, type Page } from "@playwright/test";
import { startOutdatedDaemon, type OutdatedDaemon } from "./helpers/daemon-update";
import { startE2EWorker } from "./helpers/e2e-worker";
import { getE2EDaemonPort } from "./helpers/daemon-port";
import { buildCreateAgentPreferences, buildSeededHost } from "./helpers/daemon-registry";
import {
  createProjectPickerFixture,
  removeProjectPickerFixture,
  type ProjectPickerFixture,
} from "./helpers/project-picker-fixture";
import { connectSeedClient, type SeedDaemonClient } from "./helpers/seed-client";
import { createWithWorkspace, type WithWorkspace } from "./helpers/with-workspace";

const EXTRA_HOSTS_KEY = "@paseo:e2e-extra-hosts";

interface TrackedProjectPickerFixture extends ProjectPickerFixture {
  rememberProjectId: (projectId: string) => void;
}

// Test setup is wired through an `auto: true` fixture rather than `test.beforeEach`.
// `test.beforeEach` declared at the top level of a non-test fixture file is unreliable
// across spec-file boundaries — Playwright sometimes skips it for the first test of a
// subsequent spec when multiple specs run in the same worker. Auto fixtures run
// reliably for every test that uses this `test` object.
const metroTest = base.extend({
  baseURL: async ({}, provide) => {
    const metroPort = process.env.E2E_METRO_PORT;
    if (!metroPort) {
      throw new Error("E2E_METRO_PORT not set - globalSetup must run first");
    }
    await provide(`http://localhost:${metroPort}`);
  },
});

const test = metroTest.extend<
  {
    paseoE2ESetup: void;
    projectOwnership: void;
    outdatedDaemon: OutdatedDaemon;
    desktopManagedOutdatedDaemon: OutdatedDaemon;
    relayConfigOutdatedDaemon: OutdatedDaemon;
    projectPickerFixture: TrackedProjectPickerFixture;
    withWorkspace: WithWorkspace;
  },
  { e2eForkProviders: string[]; e2eWorker: void; e2eWorkerClient: SeedDaemonClient }
>({
  e2eForkProviders: [[], { scope: "worker", option: true }],
  e2eWorker: [
    async ({ e2eForkProviders }, provide, workerInfo) => {
      const worker = await startE2EWorker(workerInfo.workerIndex, {
        forkProviders: e2eForkProviders,
      });
      try {
        await provide();
      } finally {
        await worker.close();
      }
    },
    { scope: "worker", auto: true },
  ],
  e2eWorkerClient: [
    async ({ e2eWorker }, provide) => {
      void e2eWorker;
      const client = await connectSeedClient();
      try {
        await provide(client);
      } finally {
        await client.close().catch(() => undefined);
      }
    },
    { scope: "worker" },
  ],
  projectOwnership: [
    async ({ e2eWorkerClient }, provide, testInfo) => {
      const before = new Set(
        (await e2eWorkerClient.fetchWorkspaces()).entries.map((workspace) => workspace.projectId),
      );

      await provide();

      const leaked = [
        ...new Set(
          (await e2eWorkerClient.fetchWorkspaces()).entries.map((workspace) => workspace.projectId),
        ),
      ].filter((projectId) => !before.has(projectId));
      for (const projectId of leaked) {
        await e2eWorkerClient.removeProject(projectId).catch(() => undefined);
      }
      if (leaked.length > 0) {
        const message = `Test leaked daemon project records: ${leaked.join(", ")}`;
        if (testInfo.status === testInfo.expectedStatus) throw new Error(message);
        await testInfo.attach("project-leaks", { body: message, contentType: "text/plain" });
      }
    },
    { auto: true },
  ],
  paseoE2ESetup: [
    async ({ page }, provide, testInfo) => {
      const daemonPort = getE2EDaemonPort();
      const metroPort = process.env.E2E_METRO_PORT;
      if (!metroPort) {
        throw new Error(
          "E2E_METRO_PORT is not set. Ensure Playwright `globalSetup` starts Metro and exports E2E_METRO_PORT.",
        );
      }

      // Hard guardrail: never allow tests to hit the developer's default daemon.
      // This blocks both HTTP and WS attempts to :6767 (before any navigation).
      await page.route(/:(6767)\b/, (route) => route.abort());
      await page.routeWebSocket(/:(6767)\b/, async (ws) => {
        await ws.close({ code: 1008, reason: "Blocked connection to localhost:6767 during e2e." });
      });

      const entries: string[] = [];

      page.on("console", (message) => {
        entries.push(`[console:${message.type()}] ${message.text()}`);
      });

      page.on("pageerror", (error) => {
        entries.push(`[pageerror] ${error.message}`);
      });

      const nowIso = new Date().toISOString();
      const seedNonce = Math.random().toString(36).slice(2);
      const serverId = process.env.E2E_SERVER_ID;
      if (!serverId) {
        throw new Error("E2E_SERVER_ID is not set - expected from the Playwright worker fixture.");
      }
      const testDaemon = buildSeededHost({
        serverId,
        endpoint: `127.0.0.1:${daemonPort}`,
        nowIso,
      });
      const createAgentPreferences = buildCreateAgentPreferences(testDaemon.serverId);

      await page.addInitScript(
        ({ daemon, preferences, seedNonce: nonce, extraHostsKey }) => {
          // `addInitScript` runs on every navigation (including reloads). Some tests intentionally
          // override storage and reload; they can opt out of seeding for the *next* navigation by
          // setting this flag before the reload.
          const disableOnceKey = "@paseo:e2e-disable-default-seed-once";
          const disableValue = localStorage.getItem(disableOnceKey);
          if (disableValue) {
            localStorage.removeItem(disableOnceKey);
            if (disableValue === nonce) {
              return;
            }
          }

          localStorage.setItem("@paseo:e2e", "1");
          localStorage.setItem("@paseo:e2e-seed-nonce", nonce);

          const rawExtraHosts = localStorage.getItem(extraHostsKey);
          const extraHosts = rawExtraHosts ? JSON.parse(rawExtraHosts) : [];

          // Hard-reset anything that could point to a developer's real daemon.
          localStorage.setItem("@paseo:daemon-registry", JSON.stringify([daemon, ...extraHosts]));
          localStorage.removeItem("@paseo:settings");
          localStorage.setItem("@paseo:create-agent-preferences", JSON.stringify(preferences));
        },
        {
          daemon: testDaemon,
          preferences: createAgentPreferences,
          seedNonce,
          extraHostsKey: EXTRA_HOSTS_KEY,
        },
      );

      await provide();

      if (entries.length > 0 && testInfo.status !== testInfo.expectedStatus) {
        await testInfo.attach("browser-console", {
          body: entries.join("\n"),
          contentType: "text/plain",
        });
      }
    },
    { auto: true },
  ],
  outdatedDaemon: async ({}, provide) => {
    const daemon = await startOutdatedDaemon();
    await provide(daemon);
    await daemon.close();
  },
  desktopManagedOutdatedDaemon: async ({}, provide) => {
    const daemon = await startOutdatedDaemon({ desktopManaged: true });
    await provide(daemon);
    await daemon.close();
  },
  relayConfigOutdatedDaemon: async ({}, provide) => {
    const daemon = await startOutdatedDaemon({
      daemonStatusRpcCapability: false,
      relayConfigCapability: false,
    });
    await provide(daemon);
    await daemon.close();
  },
  projectPickerFixture: async ({}, provide) => {
    const resource = await createProjectPickerFixture();
    const { fixture } = resource;
    let projectId: string | null = null;
    try {
      await provide({
        ...fixture,
        rememberProjectId: (openedProjectId) => {
          projectId = openedProjectId;
        },
      });
    } finally {
      try {
        const client = await connectSeedClient();
        try {
          await removeProjectPickerFixture(client, fixture, projectId);
        } finally {
          await client.close();
        }
      } finally {
        await resource.removeDirectory();
      }
    }
  },
  withWorkspace: async ({ page }, provide) => {
    const handle = createWithWorkspace(page);
    await provide(handle.withWorkspace);
    await handle.cleanup();
  },
});

export { test, metroTest, expect, type Page };