import { test, expect } from "@playwright/test";
import {
  buildIndex,
  pathExists,
  readJson,
  resetData,
  writeSite,
} from "./helpers";
import type { ChannelConfig } from "yt-dlp-transcript-common/lib/channelConfig";

// The build-inclusion toggle on /channels flips `excludeFromBuild` in the
// channel's config.json. The next build then skips the channel entirely and
// the existing top-level cleanup loops in buildIndex remove its per-channel
// output dirs. Toggling back re-includes it on the next build.

const CONFIG_PATH = "test-transcripts/channels/test-youtube/config.json";
const MANIFEST_PATH =
  "test-transcripts/.export-index/sites/testsite/summaries/manifest.json";
const CHANNEL_OUT_DIR =
  "test-transcripts/.export-index/shared/transcripts/test-youtube";

test("toggling a channel off skips it from the build; toggling back restores it", async ({
  page,
}) => {
  await resetData("one-youtube-channel-with-data");
  await writeSite("testsite", {
    channels: [{ slug: "test-youtube", groupId: "default" }],
  });

  await buildIndex(page);
  {
    const manifest = await readJson<{
      totalCount: number;
      channels: { name: string }[];
    }>(MANIFEST_PATH);
    expect(manifest.totalCount).toBe(1);
    expect(manifest.channels.map((c) => c.name)).toContain(
      "Test YouTube Channel",
    );
    expect(await pathExists(`${CHANNEL_OUT_DIR}/manifest.json`)).toBe(true);
  }

  await page.goto("/channels");
  const toggle = page.getByRole("button", {
    name: "toggle build inclusion for test-youtube",
  });
  await expect(toggle).toHaveText(/Included/);
  await expect(toggle).toHaveAttribute("aria-pressed", "true");
  await toggle.click();

  await expect(
    page.getByRole("button", { name: "toggle build inclusion for test-youtube" }),
  ).toHaveText(/Skipped/);
  await expect(
    page.getByRole("button", { name: "toggle build inclusion for test-youtube" }),
  ).toHaveAttribute("aria-pressed", "false");

  {
    const cfg = await readJson<ChannelConfig>(CONFIG_PATH);
    expect(cfg.excludeFromBuild).toBe(true);
  }

  await buildIndex(page);
  {
    const manifest = await readJson<{
      totalCount: number;
      channels: { name: string }[];
    }>(MANIFEST_PATH);
    expect(manifest.totalCount).toBe(0);
    expect(manifest.channels.map((c) => c.name)).not.toContain(
      "Test YouTube Channel",
    );
    expect(await pathExists(CHANNEL_OUT_DIR)).toBe(false);
  }

  await page.goto("/channels");
  const reToggle = page.getByRole("button", {
    name: "toggle build inclusion for test-youtube",
  });
  await expect(reToggle).toHaveText(/Skipped/);
  await reToggle.click();
  await expect(
    page.getByRole("button", { name: "toggle build inclusion for test-youtube" }),
  ).toHaveText(/Included/);

  {
    const cfg = await readJson<ChannelConfig>(CONFIG_PATH);
    expect(cfg.excludeFromBuild).toBeUndefined();
  }

  await buildIndex(page);
  {
    const manifest = await readJson<{
      totalCount: number;
      channels: { name: string }[];
    }>(MANIFEST_PATH);
    expect(manifest.totalCount).toBe(1);
    expect(manifest.channels.map((c) => c.name)).toContain(
      "Test YouTube Channel",
    );
    expect(await pathExists(`${CHANNEL_OUT_DIR}/manifest.json`)).toBe(true);
  }
});