"""测试摘要键盘渲染：推广邮件的退订链接按钮必须显示且排最前。"""

from src.tg_bot import (
    _ensure_unsub_link,
    _is_unsub_link,
    _link_buttons,
    _summary_keyboard,
)


def _rows_of(kb: dict) -> list[list[dict]]:
    return kb["inline_keyboard"]


def test_promotion_with_unsub_link_shows_button_first():
    """推广邮件：AI 提取到退订链接时必须显示，且排在第一行"""
    links = [
        {"text": "Manage Preferences", "url": "https://e.example.com/pref"},
        {"text": "推广活动详情", "url": "https://e.example.com/deal"},
    ]
    kb = _summary_keyboard(can_reply=False, is_promotion=True, links=links)
    rows = _rows_of(kb)
    first = rows[0][0]
    assert first["url"] == "https://e.example.com/pref"
    assert "🔕" in first["text"]
    # 其余按钮仍然存在
    texts = [b["text"] for r in rows for b in r]
    assert "告诉我更多" in texts
    assert "查看原文" in texts


def test_promotion_without_links_keeps_default_buttons():
    """推广邮件：没有链接时保持原有按钮"""
    kb = _summary_keyboard(can_reply=False, is_promotion=True, links=None)
    rows = _rows_of(kb)
    assert len(rows) == 2
    assert rows[0][0]["text"] == "告诉我更多"
    assert rows[1][0]["text"] == "查看原文"


def test_promotion_with_only_non_unsub_link():
    """推广邮件：只有非退订链接时也正常渲染（🔗），不冒充退订按钮"""
    links = [{"text": "查看活动", "url": "https://e.example.com/event"}]
    kb = _summary_keyboard(can_reply=False, is_promotion=True, links=links)
    rows = _rows_of(kb)
    assert rows[0][0]["text"] == "🔗 查看活动"
    assert rows[1][0]["text"] == "告诉我更多"
    assert rows[2][0]["text"] == "查看原文"


def test_normal_email_links_still_rendered():
    """普通邮件：链接按钮行为不变"""
    links = [{"text": "查看账单", "url": "https://e.example.com/bill"}]
    kb = _summary_keyboard(can_reply=True, is_promotion=False, links=links)
    rows = _rows_of(kb)
    texts = [b["text"] for r in rows for b in r]
    assert "🔗 查看账单" in texts


def test_unsub_detection_variants():
    """退订链接识别：文字与 URL 关键词变体"""
    assert _is_unsub_link({"text": "Unsubscribe", "url": "https://x.com"})
    assert _is_unsub_link({"text": "退订", "url": "https://x.com"})
    assert _is_unsub_link({"text": "点击这里取消订阅", "url": "https://x.com"})
    assert _is_unsub_link({"text": "管理偏好设置", "url": "https://x.com"})
    assert _is_unsub_link({"text": "更多", "url": "https://x.com/unsubscribe"})
    assert _is_unsub_link({"text": "Preferences", "url": "https://x.com/email-pref"})
    assert not _is_unsub_link({"text": "查看详情", "url": "https://x.com/deal"})


def test_unsub_link_sorted_before_other_links():
    """退订链接即使不在 links 第一位也会被排到最前"""
    links = [
        {"text": "查看详情", "url": "https://x.com/a"},
        {"text": "unsubscribe", "url": "https://x.com/b"},
    ]
    rows = _link_buttons(links)
    assert rows[0][0]["url"] == "https://x.com/b"
    assert rows[1][0]["url"] == "https://x.com/a"


def test_invalid_url_filtered():
    """非法 URL（非 http、多重协议头）被过滤"""
    links = [
        {"text": "退订", "url": "javascript:alert(1)"},
        {"text": "退订", "url": "https://x.com/https://evil.com"},
        {"text": "退订", "url": "https://ok.example.com/unsub"},
    ]
    rows = _link_buttons(links)
    assert len(rows) == 1
    assert rows[0][0]["url"] == "https://ok.example.com/unsub"


def test_long_unsub_url_rendered():
    """长 tracking 退订链接（如 OpenAI 的 >700 字符）必须渲染，不能被长度过滤误杀"""
    url = "https://r.openai.com/asm/unsubscribe/?user_id=108370056&data=" + "x" * 700
    assert len(url) > 200
    links = [{"text": "取消订阅", "url": url}]
    rows = _link_buttons(links)
    assert len(rows) == 1
    assert rows[0][0]["url"] == url
    assert "🔕" in rows[0][0]["text"]


def test_oversized_url_filtered():
    """超过 2048 的 URL 仍被过滤"""
    url = "https://example.com/" + "x" * 2100
    links = [{"text": "退订", "url": url}]
    rows = _link_buttons(links)
    assert rows == []


def test_mailto_unsub_link_rendered():
    """mailto: 退订链接（如 InferX 的 mailto:team@inferx.net?subject=Unsubscribe）必须渲染"""
    links = [{"text": "退订", "url": "mailto:team@inferx.net?subject=Unsubscribe"}]
    kb = _summary_keyboard(can_reply=False, is_promotion=True, links=links)
    rows = kb["inline_keyboard"]
    assert rows[0][0]["url"] == "mailto:team@inferx.net?subject=Unsubscribe"
    assert "🔕" in rows[0][0]["text"]
    assert _is_unsub_link(links[0])


def test_ensure_unsub_link_http_header_fallback():
    """AI 没提取到退订链接时，用 List-Unsubscribe 头的 http 链接兜底"""
    header = "https://links.iterable.com/s/uh/tKjpy4SHCKvbzE2votNyZEJDvlMdeodVyWFExNs310ugJ_RvZtoZq4gGLQ0BXMSL2lf3kEZsmr1XJmrODIFHpEwcypo3LR096pZ7jsfBynZBgGWz171Wc1E6ZIIC5Lu0e-Stq6p5-_Ad3CnNlUWrW1tnrLSeiGsOiQG_zMYKVbtfQZgvfm3QYfD9lQ/Cey29KU8yOzIUltaEJA8EMRFf-FKMZQy/24"
    links = _ensure_unsub_link([], header)
    assert links == [{"text": "退订", "url": header}]
    kb = _summary_keyboard(can_reply=False, is_promotion=True, links=links)
    assert kb["inline_keyboard"][0][0]["url"] == header


def test_ensure_unsub_link_mailto_header_fallback():
    """List-Unsubscribe 头只有 mailto 时也兜底"""
    header = "mailto:unsubscribe+19693436+25822730@unsubscribe.iterable.com"
    links = _ensure_unsub_link([], header)
    assert links == [{"text": "退订", "url": header}]


def test_ensure_unsub_link_no_duplicate_when_ai_extracted():
    """AI 已提取退订链接时，不重复添加头部链接"""
    ai_links = [{"text": "取消订阅", "url": "https://r.openai.com/asm/unsubscribe/?x=1"}]
    links = _ensure_unsub_link(ai_links, "https://links.example.com/unsub")
    assert links == ai_links


def test_ensure_unsub_link_ignores_invalid_header():
    """头部无有效链接时不兜底"""
    assert _ensure_unsub_link([], "") == []
    assert _ensure_unsub_link([], "javascript:alert(1)") == []