EVENT_NAMES = {"page_view", "page_stay", "sdk_loaded"}
MAX_EVENTS_PER_BATCH = 50
MAX_PROP_KEYS = 32
MAX_STR_LEN = 500
MAX_PATH_LEN = 500
MAX_TITLE_LEN = 200
CLOCK_SKEW_LATE_SEC = 120        # 超过即标 late
CLOCK_SKEW_REJECT_SEC = 86400    # 超过即拒绝
SENSITIVE_KEY_PATTERNS = ("password", "passwd", "token", "secret", "card", "verif", "otp", "idcard")
URL_PARAM_DROP_PATTERNS = ("email", "phone", "mobile", "token", "key", "password", "verif")
SESSION_IDLE_MS = 30 * 60 * 1000
BOT_UA_KEYWORDS = ("bot", "spider", "crawl", "slurp", "bingpreview", "headless", "lighthouse")
EVENT_PROP_WHITELIST = {          # spec §9.1：未知字段拒绝。免费文本/任意属性不得入库
    "page_view": {"referrer", "referrer_domain", "utm", "nav_type", "prerendering"},
    "page_stay": {"active_ms", "path"},
    "sdk_loaded": {"sdk_version"},
}
MAX_PROP_DEPTH = 2
MAX_PROP_JSON_BYTES = 4096

# ---------------------------------------------------------------------------
# 来源归因规则库 v1（tracker/services/attribution.py 消费）。改规则必须 bump 版本号
# 并跑 recompute_attribution 重算历史——已落库分类带 rule_version 可追溯。
# ---------------------------------------------------------------------------
ATTRIBUTION_RULE_VERSION = "v1"
AI_REFERRAL_DOMAINS = {  # AI 平台 → 显示名
    "chatgpt.com": "ChatGPT", "perplexity.ai": "Perplexity",
    "copilot.microsoft.com": "Copilot", "gemini.google.com": "Gemini",
    "deepseek.com": "DeepSeek", "claude.ai": "Claude", "poe.com": "Poe", "you.com": "You",
}
SEARCH_ENGINE_DOMAINS = {  # 引擎后缀/域名 → 显示名（"google."/"yandex." 前缀匹配任意国家站 TLD）
    "google.": "Google", "bing.com": "Bing", "baidu.com": "百度", "yandex.": "Yandex",
    "duckduckgo.com": "DuckDuckGo", "yahoo.com": "Yahoo", "ecosia.org": "Ecosia",
    "search.naver.com": "Naver", "search.brave.com": "Brave",
}
SEARCH_TERM_PARAMS = {  # 引擎 → referrer URL 里的搜索词参数名（白名单提取）
    "Bing": ["q"], "百度": ["wd", "word"], "DuckDuckGo": ["q"], "Yandex": ["text"],
    "Ecosia": ["q"], "Yahoo": ["p"], "Brave": ["q"], "Naver": ["query"],
}  # 注：Google 不提供，绝不虚构
PAID_CLICK_PARAMS = {"gclid": "Google Ads", "fbclid": "Meta Ads",
                     "msclkid": "Bing Ads", "yclid": "Yandex Ads"}
SOCIAL_DOMAINS = {
    "t.co": "Twitter/X", "twitter.com": "Twitter/X", "x.com": "Twitter/X",
    "facebook.com": "Facebook", "linkedin.com": "LinkedIn", "instagram.com": "Instagram",
    "vk.com": "VK", "reddit.com": "Reddit", "pinterest.com": "Pinterest",
    "telegram.me": "Telegram", "t.me": "Telegram",
}
INAPP_UA_MARKERS = {"MicroMessenger": "微信", "Line/": "Line", "FBAN": "Facebook",
                    "FBAV": "Facebook", "Instagram": "Instagram", "WhatsApp": "WhatsApp"}
CHANNELS = ("natural_search", "paid_search", "ai_referral", "social",
            "in_app", "referral", "direct", "unknown")