// E2E: SAMA-native commit view at /GIT/:owner/:repo/commit/:sha
//
// The screenshot in this PR was taken against the same SHA the user
// paired in their request — 526fa16... is the most recent meta-edit
// of the blog post that committed itself via the CMS.

import { test, expect } from "@playwright/test";
import * as fs from "fs";
import * as path from "path";

const SCREENSHOT_DIR = "test-results/commit-view";
const SHA = "526fa16faa56ab82c8f69a143829361365dcc98d";
const SHORT = SHA.slice(0, 7);

test.beforeAll(() => {
  fs.mkdirSync(SCREENSHOT_DIR, { recursive: true });
});

test.describe("/GIT/:owner/:repo/commit/:sha", () => {
  test("renders commit subject + author + parent + diff", async ({ page }) => {
    const res = await page.goto(`/GIT/syntaxai/tdd.md/commit/${SHA}`);
    expect(res?.status()).toBe(200);

    // Subject + body block
    await expect(page.locator(".commit-subject")).toContainText(/edit content\/blog\/sama-meets-git-cms\.md via web/);

    // Metadata block has author, date, parent, full SHA
    const meta = page.locator(".commit-meta");
    await expect(meta).toContainText("syntaxai");
    await expect(meta).toContainText(SHA);

    // At least one file pane with the right path
    const fileHeader = page.locator(".commit-file-header").first();
    await expect(fileHeader).toBeVisible();
    await expect(fileHeader).toContainText(/content\/blog\/sama-meets-git-cms\.md/);

    // At least one added line and one removed line — every meta edit
    // adds an HTML comment and that's at minimum one + line.
    await expect(page.locator(".commit-line-added").first()).toBeVisible();

    // Footer link to raw .diff (still on tdd.md)
    const rawLink = page.locator('a[href$=".diff"]').first();
    await expect(rawLink).toBeVisible();

    await page.screenshot({
      path: path.join(SCREENSHOT_DIR, `1-commit-${SHORT}.png`),
      fullPage: true,
    });
  });

  test(".diff suffix returns raw unified-diff text (Bun-native, served from tdd.md)", async ({ request }) => {
    const res = await request.get(`/GIT/syntaxai/tdd.md/commit/${SHA}.diff`);
    expect(res.status()).toBe(200);
    expect(res.headers()["content-type"]).toMatch(/text\/plain/);
    const body = await res.text();
    expect(body).toContain("diff --git");
    expect(body).toContain("content/blog/sama-meets-git-cms.md");
  });

  test("invalid SHA shape 404s", async ({ request }) => {
    const res = await request.get(`/GIT/syntaxai/tdd.md/commit/not-a-sha`);
    expect(res.status()).toBe(404);
  });

  test("non-existent commit 404s with our own not-found page", async ({ request }) => {
    const res = await request.get(`/GIT/syntaxai/tdd.md/commit/0000000000000000000000000000000000000000`);
    expect(res.status()).toBe(404);
  });
});