"""Package-level constants for searxng-cli scripts.

Import in sibling scripts with:
    from _config import VERSION, USER_AGENT, SCHEMA_VERSION, UA_POOL

Retry settings and shared HTTP utilities now live in ``common.py`` so that
both ``search.py`` and ``fetch.py`` share one consistent implementation.
"""

VERSION = "2.2.1"
SCHEMA_VERSION = "1.0"
USER_AGENT = f"searxng-cli/{VERSION}"

# 浏览器 UA 池（用于 searxng-cli 默认 UA 被站点拦截时的回退）。
#
# v2.2.0 从 common.py 迁移至此统一管理（SSOT）。common.py 通过
# ``from _config import UA_POOL`` 引用，并在导入失败时回退到其内置副本。
#
# 维护原则：
#   1. 版本号保持为当前年份的主流浏览器版本，避免被识别为过时浏览器
#   2. 顺序固定——get_ua_for_domain() 用 SHA-256 哈希选索引，顺序变化会
#      改变域名→UA 的映射，导致跨版本缓存失效（可接受，但应尽量避免无谓变动）
#   3. 至少覆盖 Chrome/Edge/Firefox × Windows/macOS/Linux，保证指纹多样性
#
# 当前版本（2026 年）：Chrome 138-140 / Edge 138 / Firefox 140 / Safari 18。
UA_POOL = [
    # Chrome 140 — Windows / macOS / Linux
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36",
    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36",
    # Chrome 139 — Windows / macOS / Linux
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36",
    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36",
    # Chrome 138 — Windows / macOS / Linux
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36",
    "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36",
    # Edge 138 — Windows / macOS
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36 Edg/138.0.0.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 "
    "(KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36 Edg/138.0.0.0",
    # Firefox 140 — Windows / macOS / Linux
    "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) "
    "Gecko/20100101 Firefox/140.0",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:140.0) "
    "Gecko/20100101 Firefox/140.0",
    "Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0",
    # Safari 18 — macOS（WebKit 指纹，应对 Chromium 针对性拦截）
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 "
    "(KHTML, like Gecko) Version/18.0 Safari/605.1.15",
]