"""
E2E 测试套件：验证 personal-blog 核心用户旅程
===============================================
1. 登录流程 (test_login_success, test_login_failure)
2. 写文章并发布 (test_publish_article)
3. 前台页面访问 (test_homepage_load)

前置条件
--------
- 博客服务运行在 BLOG_URL（默认 http://127.0.0.1:3000）
- 管理员账号存在于 ENV：BLOG_ADMIN_USERNAME / BLOG_ADMIN_PASSWORD
- Playwright 已安装：pip install pytest-playwright

运行方式
--------
    BLOG_URL=http://129.211.173.87:8888 \
    BLOG_ADMIN_USERNAME=admin \
    BLOG_ADMIN_PASSWORD=abcd1234 \
    pytest skills/browser-automation/tests/test_blog_e2e.py -v
"""

import os
import time
from datetime import datetime

import pytest
from playwright.sync_api import Browser, Page, expect

# ---------------------------------------------------------------------------
# Fixtures
# ---------------------------------------------------------------------------

@pytest.fixture(scope="session")
def blog_url() -> str:
    return os.getenv("BLOG_URL", "http://127.0.0.1:3000")


@pytest.fixture(scope="session")
def admin_credentials() -> dict:
    return {
        "username": os.getenv("BLOG_ADMIN_USERNAME", "admin"),
        "password": os.getenv("BLOG_ADMIN_PASSWORD", "abcd1234"),
    }


@pytest.fixture
def page(browser: Browser) -> Page:
    """每个测试用例一个全新的浏览器上下文，保证隔离性。"""
    context = browser.new_context(viewport={"width": 1400, "height": 900})
    page = context.new_page()
    yield page
    context.close()


# ---------------------------------------------------------------------------
# 1. 登录流程
# ---------------------------------------------------------------------------

class TestLogin:

    def test_login_success(self, page: Page, blog_url: str, admin_credentials: dict):
        """正向登录：管理员输入正确凭据后，应跳转至 /admin"""
        page.goto(f"{blog_url}/login")
        page.wait_for_load_state("networkidle")
        time.sleep(1)

        page.fill("input#username", admin_credentials["username"])
        page.fill("input#password", admin_credentials["password"])
        page.click("button:has-text('登录')")

        page.wait_for_url("**/admin", timeout=10000)
        time.sleep(1)

        # 验证后台页面包含关键元素
        body_text = page.locator("body").inner_text()
        assert any(kw in body_text for kw in ["文章", "仪表盘", "管理", "首页"]), \
            f"登录后应进入管理后台，当前页面文本: {body_text[:200]}"
        assert "/admin" in page.url


    def test_login_failure(self, page: Page, blog_url: str):
        """负向登录：输入错误密码后，应留在登录页并显示错误提示"""
        page.goto(f"{blog_url}/login")
        page.wait_for_load_state("networkidle")
        time.sleep(1)

        page.fill("input#username", "wronguser")
        page.fill("input#password", "wrongpassword")
        page.click("button:has-text('登录')")

        time.sleep(2)

        assert "/login" in page.url, f"登录失败后应留在 /login，实际URL: {page.url}"
        body_text = page.locator("body").inner_text()
        assert any(kw in body_text for kw in ["错误", "失败", "Invalid", "incorrect", "密码", "用户名"]), \
            "登录失败后页面应包含错误提示信息"


# ---------------------------------------------------------------------------
# 2. 发布文章
# ---------------------------------------------------------------------------

class TestPublishArticle:

    def test_publish_article(self, browser: Browser, blog_url: str, admin_credentials: dict):
        """E2E: 登录 → 写文章 → 填写表单 → 发布 → 验证文章出现在列表中"""
        context = browser.new_context(viewport={"width": 1400, "height": 900})
        page = context.new_page()

        try:
            # 1. 登录
            page.goto(f"{blog_url}/login")
            page.wait_for_load_state("networkidle")
            time.sleep(1)

            page.fill("input#username", admin_credentials["username"])
            page.fill("input#password", admin_credentials["password"])
            page.click("button:has-text('登录')")

            page.wait_for_url("**/admin", timeout=10000)
            time.sleep(1)

            # 2. 导航到写文章页面
            write_link = page.query_selector("a:has-text('写文章')")
            if write_link:
                write_link.click()
            else:
                page.goto(f"{blog_url}/admin/posts/new")
            page.wait_for_load_state("networkidle")
            time.sleep(2)

            # 3. 填写文章表单
            timestamp = datetime.now().strftime("%H%M%S")
            title = f"技能测试文章 {timestamp}"
            summary = "由 browser-automation skill 自动发布的测试摘要。"
            content = f"# 自动化测试\n\n由 **browser-automation skill** 自动发布。\n\n时间戳：{timestamp}\n\n测试完成！"

            page.fill("input#title", title)
            page.fill("textarea#summary", summary)
            page.fill("textarea#content", content)

            # 4. 提交发布
            page.click("button[type='submit']:has-text('发布文章')")
            time.sleep(3)

            # 5. 验证发布成功（宽松判断：URL 不是 login，且页面有内容）
            current_url = page.url
            assert "/login" not in current_url, f"发布后被踢回登录页，当前URL: {current_url}"

            # 如果还在写文章页，可能是成功提示还没消失，或表单提交后未跳转
            # 尝试主动导航到文章列表页去验证
            if "/admin/posts/new" in current_url:
                page.goto(f"{blog_url}/admin/posts")
                page.wait_for_load_state("networkidle")
                time.sleep(2)

            # 6. 验证文章出现在列表中
            body_text = page.locator("body").inner_text()
            assert title in body_text, f"发布的文章 '{title}' 未在文章管理列表中找到"

        finally:
            context.close()


# ---------------------------------------------------------------------------
# 3. 前台页面
# ---------------------------------------------------------------------------

class TestHomepage:

    def test_homepage_load(self, page: Page, blog_url: str):
        """验证博客首页可正常加载，并包含文章列表和基本元素"""
        page.goto(blog_url)
        page.wait_for_load_state("networkidle")
        time.sleep(1)

        expect(page.locator("body")).to_be_visible()

        body_text = page.locator("body").inner_text()
        assert len(body_text) > 100, "首页应包含可见文本内容"

        # 检查常见关键词
        common_keywords = ["首页", "关于", "文章", "标签", "归档", "阅读更多", "Blog"]
        assert any(kw in body_text for kw in common_keywords), \
            f"首页应包含常见关键词之一，当前页面文本: {body_text[:200]}"


if __name__ == "__main__":
    pytest.main([__file__, "-v"])