import re

EVENT_NAMES = {"page_view", "page_stay", "sdk_loaded", "session_resume"}
SCHEMA_VERSION = 2  # 批级信缺省 = v1（旧SDK）
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")
SANITIZE_RULE_VERSION = "v2"
# 三轨制（spec §2.4，slug 安全线=32）：①参数名黑名单整键删；②归因白名单提取保留；
# ③其余按值判别：纯数字≤10位或 slug≤32 保留，其余删。
URL_PARAM_DROP_PATTERNS = ("email", "phone", "mobile", "tel", "name", "user",
                           "token", "key", "password", "verif", "passwd", "idcard")
ATTRIBUTION_PARAM_WHITELIST = {"gclid", "gbraid", "wbraid", "fbclid", "msclkid",
                               "yclid", "gad_source", "gad_campaignid", "dclid"}
_SAFE_VALUE = re.compile(r"^(?:\d{1,10}|[A-Za-z0-9][A-Za-z0-9._-]{0,30})$")  # slug≤32：32+连续字母数字视为token删
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", "active_from", "active_to", "flush_reason", "measurement_version"},
    "sdk_loaded": {"sdk_version", "build_id", "schema_version", "config_version"},
    "session_resume": {"prev_session_id", "reason"},
}
MAX_PROP_DEPTH = 2
MAX_PROP_JSON_BYTES = 4096
EXTENDED_ENV_KEYS = {              # SDK 扩展环境键白名单（Visitor.env_extra 快照，展示用）：
    "device_pixel_ratio", "viewport", "orientation", "max_touch_points", "device_memory",  # 设备形态
    "languages", "color_scheme", "standalone",                                            # 偏好/宿主
    "network_downlink", "network_rtt", "save_data", "wechat_version",                     # 网络/宿主
    "device_model", "platform_version", "architecture", "bitness",                        # UA-CH 高熵
}

# ---------------------------------------------------------------------------
# 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")