import type { Page } from "@playwright/test";

import {
  aliceMainHead,
  bobHead,
  cobUrl,
  expect,
  markdownUrl,
  sourceBrowsingRid,
  sourceBrowsingUrl,
  test,
} from "@tests/support/fixtures.js";
import { expectUrlPersistsReload } from "@tests/support/router";

async function expectCounts(
  params: { commits: number; contributors: number },
  page: Page,
) {
  await expect(
    page.getByRole("link", {
      name: `${params.commits} ${params.commits === 1 ? "commit" : "commits"}`,
    }),
  ).toBeVisible();

  await expect(
    page.getByText(
      `${params.contributors} ${
        params.contributors === 1 ? "contributor" : "contributors"
      }`,
    ),
  ).toBeVisible();
}

test("navigate to project", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  // Header.
  {
    const name = page.getByRole("link", { name: "source-browsing" }).nth(1);
    const id = page.getByText(sourceBrowsingRid);
    const description = page.getByText(
      "Git repository for source browsing tests",
    );

    await expect(name).toBeVisible();
    await expect(id).toBeVisible();
    await expect(description).toBeVisible();
  }

  // Project menu shows default selected branch and commit and contributor counts.
  {
    await expect(page.getByLabel("canonical-branch")).toBeVisible();
    await expect(page.getByTitle("Current HEAD")).toHaveText(
      aliceMainHead.substring(0, 7),
    );
    await expectCounts({ commits: 6, contributors: 1 }, page);
  }

  // Navigate to the project README.md by default.
  await expect(page.locator(".filename")).toContainText("README.md");

  // Show a commit teaser.
  await expect(page.getByText("dd068e9 Add README.md")).toBeVisible();

  // Show rendered README.md contents.
  await expect(page.getByText("Git test repository")).toBeVisible();

  // Number of nodes seeding this project.
  await expect(page.getByText("Seeding 3")).toBeVisible();
});

test("show source tree at specific revision", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);
  await page.getByRole("link", { name: "6 commits" }).click();

  await page
    .locator(".teaser", { hasText: "335dd6d" })
    .getByRole("button", {
      name: "Browse the repository at this point in the history",
    })
    .click();

  await expect(page.getByTitle("Current HEAD")).toContainText("335dd6d");
  await expect(page.locator(".source-tree")).toHaveText("bin src");
  await expectCounts({ commits: 2, contributors: 1 }, page);
});

test("source file highlighting", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  await page.getByText("src").click();
  await page.getByText("true.c").click();

  await expect(page.getByText("return")).toHaveCSS(
    "color",
    "rgb(255, 123, 114)",
  );
});

test("navigate line numbers", async ({ page }) => {
  await page.goto(`${markdownUrl}/tree/main/cheatsheet.md`);
  await page.getByRole("button", { name: "Plain" }).click();

  await page.getByRole("link", { name: "5", exact: true }).click();
  await expect(page.locator("#L5")).toHaveClass("line highlight");
  await expect(page).toHaveURL(`${markdownUrl}/tree/main/cheatsheet.md#L5`);

  await expectUrlPersistsReload(page);
  await expect(page.locator("#L5")).toHaveClass("line highlight");

  await page.getByRole("link", { name: "30", exact: true }).click();
  await expect(page.locator("#L5")).not.toHaveClass("line highlight");
  await expect(page.locator("#L30")).toHaveClass("line highlight");
  await expect(page).toHaveURL(`${markdownUrl}/tree/main/cheatsheet.md#L30`);

  // Check that we go back to the Markdown view when navigating to a different
  // file.
  await page.getByRole("link", { name: "footnotes.md" }).click();
  await expect(page.getByRole("button", { name: "Markdown" })).toHaveClass(
    /gray-white/,
  );
});

test("navigate deep file hierarchies", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  const sourceTree = page.locator(".source-tree");

  await sourceTree.getByText("deep").click();
  await sourceTree.getByText("directory").click();
  await sourceTree.getByText("hierarchy").click();
  await sourceTree.getByText("is").click();
  await sourceTree.getByText("entirely").click();
  await sourceTree.getByText("possible").click();
  await sourceTree.getByText("in").nth(1).click();
  await sourceTree.getByText("git").click();
  await sourceTree.getByText("repositories").click();
  await sourceTree.getByText(".gitkeep").click();
  await expect(
    page.getByText("0801ace Add a deeply nested directory tree"),
  ).toBeVisible();

  // After a page reload the tree browser is still expanded and we're still
  // showing the .gitkeep file.
  {
    await page.reload();

    const sourceTree = page.locator(".source-tree");

    await expect(sourceTree.getByText("deep")).toBeVisible();
    await expect(sourceTree.getByText("directory")).toBeVisible();
    await expect(sourceTree.getByText("hierarchy")).toBeVisible();
    await expect(sourceTree.getByText("is")).toBeVisible();
    await expect(sourceTree.getByText("entirely")).toBeVisible();
    await expect(sourceTree.getByText("possible")).toBeVisible();
    await expect(sourceTree.getByText("in").nth(1)).toBeVisible();
    await expect(sourceTree.getByText("git").nth(1)).toBeVisible();
    await expect(sourceTree.getByText("repositories")).toBeVisible();
    await expect(sourceTree.getByText(".gitkeep")).toBeVisible();

    await expect(
      page.getByText("0801ace Add a deeply nested directory tree"),
    ).toBeVisible();
  }
});

test("files with special characters in the filename", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  const sourceTree = page.locator(".source-tree");
  await sourceTree.getByText("special").click();

  await sourceTree.getByText("+plus+").click();
  await expect(page.locator(".filename")).toContainText("+plus");

  await sourceTree.getByText("-dash-").click();
  await expect(page.locator(".filename")).toContainText("-dash-");

  await sourceTree.getByText(":colon:").click();
  await expect(page.locator(".filename")).toContainText(":colon:");

  await sourceTree.getByText(";semicolon;").click();
  await expect(page.locator(".filename")).toContainText(";semicolon;");

  await sourceTree.getByText("@at@").click();
  await expect(page.locator(".filename")).toContainText("@at@");

  await sourceTree.getByText("_underscore_").click();
  await expect(page.locator(".filename")).toContainText("_underscore_");

  // TODO: fix these errors in `radicle-httpd` for the following edge cases.
  //
  // await sourceTree.getByText("back\\slash").click();
  // await expect(page.locator(".filename")).toContainText("back\\slash");
  // await sourceTree.getByText("qs?param1=value?param2=value2#hash").click();
  // await expect(page.locator(".filename")).toContainText(
  //   "qs?param1=value?param2=value2#hash",
  // );

  await sourceTree.getByText("spaces are okay").click();
  await expect(page.locator(".filename")).toContainText("spaces are okay");

  await sourceTree.getByText("~tilde~").click();
  await expect(page.locator(".filename")).toContainText("~tilde~");

  await sourceTree.getByText("👹👹👹").click();
  await expect(page.locator(".filename")).toContainText("👹👹👹");
});

test("binary files", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  await page.getByText("bin").click();
  await page.getByText("true").click();

  await expect(page.getByText("Binary file")).toBeVisible();
});

test("empty files", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  await page.getByText("special").click();
  await page.getByText("_underscore_").click();

  await expect(page.getByText("Empty file")).toBeVisible();
});

test("hidden files", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  await page.getByText(".hidden").click();

  await expect(page.getByText("I'm a hidden file.")).toBeVisible();
});

test("markdown files", async ({ page }) => {
  await page.goto(`${markdownUrl}/tree/main/cheatsheet.md`);

  await expect(
    page.getByText("This is intended as a quick reference and showcase."),
  ).toBeVisible();

  // Switch between raw and rendered modes.
  {
    await expect(page.getByRole("button", { name: "Markdown" })).toHaveClass(
      /gray-white/,
    );
    await expect(page.getByRole("button", { name: "Plain" })).not.toHaveClass(
      /gray-white/,
    );
    await page.getByRole("button", { name: "Plain" }).click();
    await expect(
      page.getByRole("button", { name: "Markdown" }),
    ).not.toHaveClass(/gray-white/);
    await expect(page.getByRole("button", { name: "Plain" })).toHaveClass(
      /gray-white/,
    );
    await expect(page.getByText("##### Table of Contents")).toBeVisible();
    await page.getByRole("button", { name: "Markdown" }).click();
  }

  // Internal links go to anchor.
  {
    await page.getByRole("link", { name: "YouTube Videos" }).click();
    await expect(page).toHaveURL(
      `${markdownUrl}/tree/main/cheatsheet.md#videos`,
    );
  }
});

test("clone modal", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  await page.getByText("Clone").click();
  await expect(page.getByText(`rad clone ${sourceBrowsingRid}`)).toBeVisible();
  await expect(
    page.getByText(
      `http://127.0.0.1/${sourceBrowsingRid.replace("rad:", "")}.git`,
    ),
  ).toBeVisible();
});

test("peer and branch switching", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  // Alice's peer.
  {
    await page.getByTitle("Change peer").click();
    await page
      .getByRole("link", {
        name: "alice delegate",
      })
      .click();
    await expect(page.getByTitle("Change peer")).toHaveText("alice delegate");

    // Default `main` branch.
    {
      await expect(page.getByTitle("Change branch")).toHaveText("main");
      await expect(page.getByTitle("Current HEAD")).toHaveText(
        aliceMainHead.substring(0, 7),
      );
      await expectCounts({ commits: 6, contributors: 1 }, page);
    }

    // Feature branch with a slash in the name.
    {
      await page.getByTitle("Change branch").click();
      await page.getByText("feature/branch").click();

      await expect(
        page.getByRole("button", { name: "feature/branch" }),
      ).toBeVisible();
      await expect(page.getByTitle("Current HEAD")).toHaveText("1aded56");
      await expectCounts({ commits: 9, contributors: 1 }, page);
    }

    // Branch without a history or files in it.
    {
      await page.getByTitle("Change branch").click();
      await page.getByText("orphaned-branch").click();

      await expect(
        page.getByRole("button", { name: "orphaned-branch" }),
      ).toBeVisible();
      await expect(page.getByTitle("Current HEAD")).toHaveText("af3641c");
      await expectCounts({ commits: 1, contributors: 1 }, page);

      await expect(page.getByText("No files at this revision")).toBeVisible();
    }
  }

  // Reset the source browser by clicking the project title.
  {
    await page.getByRole("link", { name: "source-browsing" }).nth(1).click();

    await expect(page.getByTitle("Change peer")).not.toContainText("alice");
    await expect(page.getByTitle("Change peer")).not.toContainText("bob");

    await expect(page.getByLabel("canonical-branch")).toBeVisible();
    await expect(page.getByTitle("Current HEAD")).toHaveText(
      aliceMainHead.substring(0, 7),
    );
    await expect(page.getByText("Git test repository")).toBeVisible();
  }

  // Bob's peer.
  {
    await page.getByTitle("Change peer").click();
    await page.getByRole("link", { name: "bob" }).click();
    await expect(page.getByTitle("Change peer")).toContainText("bob");
    await expect(page.getByTitle("Change peer")).not.toHaveText("delegate");

    // Default `main` branch.
    {
      await expect(page.getByRole("button", { name: "main" })).toBeVisible();
      await expect(page.getByTitle("Current HEAD")).toHaveText(
        bobHead.substring(0, 7),
      );
      await expectCounts({ commits: 7, contributors: 2 }, page);
      await expect(
        page.getByText(`${bobHead.substring(0, 7)} Update readme`),
      ).toBeVisible();
    }
  }
});

test("only one modal can be open at a time", async ({ page }) => {
  await page.goto(sourceBrowsingUrl);

  await page.getByTitle("Change peer").click();
  await page
    .getByRole("link", {
      name: "alice delegate",
    })
    .click();

  await page.getByText("Clone").click();
  await expect(page.getByText("Code font")).not.toBeVisible();
  await expect(page.getByText("Use the Radicle CLI")).toBeVisible();
  await expect(page.getByText("bob")).not.toBeVisible();
  await expect(page.getByText("feature/branch")).not.toBeVisible();

  await page.getByRole("button", { name: "Theme" }).first().click();
  await expect(page.getByText("Code font")).toBeVisible();
  await expect(page.getByText("Use the Radicle CLI")).not.toBeVisible();
  await expect(page.getByText("bob")).not.toBeVisible();
  await expect(page.getByText("feature/branch")).not.toBeVisible();

  await page.getByTitle("Change branch").click();
  await expect(page.getByText("Code font")).not.toBeVisible();
  await expect(page.getByText("Use the Radicle CLI")).not.toBeVisible();
  await expect(page.getByText("bob")).not.toBeVisible();
  await expect(page.getByText("feature/branch")).toBeVisible();

  await page.getByTitle("Change peer").click();
  await expect(page.getByText("Code font")).not.toBeVisible();
  await expect(page.getByText("Use the Radicle CLI")).not.toBeVisible();
  await expect(page.getByText("bob")).toBeVisible();
  await expect(page.getByText("feature/branch")).not.toBeVisible();
});

test.describe("browser error handling", () => {
  test("error appears when folder can't be loaded", async ({ page }) => {
    await page.route(
      `**/v1/projects/${sourceBrowsingRid}/tree/${aliceMainHead}/src/`,
      route => route.fulfill({ status: 500 }),
    );

    await page.goto(sourceBrowsingUrl);

    const sourceTree = page.locator(".source-tree");
    await sourceTree.getByText("src").click();

    await expect(page.getByText("File not found")).toBeVisible();
  });
  test("error appears when file can't be loaded", async ({ page }) => {
    await page.route(
      `**/v1/projects/${sourceBrowsingRid}/blob/${aliceMainHead}/.hidden`,
      route => route.fulfill({ status: 500 }),
    );

    await page.goto(sourceBrowsingUrl);
    await page.getByText(".hidden").click();

    await expect(page.getByText("File not found")).toBeVisible();
  });
  test("error appears when README can't be loaded", async ({ page }) => {
    await page.route(
      `**/v1/projects/${sourceBrowsingRid}/readme/${aliceMainHead}`,
      route => route.fulfill({ status: 500 }),
    );

    await page.goto(sourceBrowsingUrl);
    await expect(page.getByText("File not found")).toBeVisible();
  });
  test("error appears when navigating to missing file", async ({ page }) => {
    await page.route(
      `**/v1/projects/${sourceBrowsingRid}/blob/${aliceMainHead}/.hidden`,
      route => route.fulfill({ status: 500 }),
    );

    await page.goto(`${sourceBrowsingUrl}/tree/master/.hidden`);

    await expect(page.getByText("File not found")).toBeVisible();
  });
});

test("external markdown link", async ({ page }) => {
  await page.route("https://example.com/**", route => {
    return route.fulfill({ body: "hello", contentType: "text/plain" });
  });
  await page.goto(`${markdownUrl}/tree/main/footnotes.md`);
  await page.getByRole("link", { name: "https://example.com" }).click();
  await expect(page).toHaveURL("https://example.com");
});

test("internal file markdown link", async ({ page }) => {
  await page.goto(`${markdownUrl}/tree/main/link-files.md`);
  await page.getByRole("link", { name: "Markdown Cheatsheet" }).click();
  await expect(page).toHaveURL(`${markdownUrl}/tree/main/cheatsheet.md`);
  await expect(
    page.locator(".filename", { hasText: "cheatsheet.md" }),
  ).toBeVisible();

  await page.goto(`${markdownUrl}/tree/main/link-files.md`);
  await page.getByRole("link", { name: "black square" }).click();
  await expect(page).toHaveURL(
    `${markdownUrl}/tree/main/assets/black-square.png`,
  );
  await expect(
    page.locator(".file-path", {
      hasText: "assets/black-square.png",
    }),
  ).toBeVisible();
  await expect(
    page.getByRole("link", { name: "black-square.png" }),
  ).toBeVisible();
});

test("diff selection de-select", async ({ page }) => {
  await page.goto(
    `${cobUrl}/patches/7db70f2ed80235db7f0ab9e5537e76572a304991?tab=changes#README.md:H0L0H0L3`,
  );
  await page.getByText("Add subtitle to README").click();
  await expect(page).toHaveURL(
    `${cobUrl}/patches/7db70f2ed80235db7f0ab9e5537e76572a304991?tab=changes`,
  );
});