import os
from dataclasses import dataclass, field
from pathlib import Path

from dotenv import load_dotenv

load_dotenv()


@dataclass(slots=True)
class FingerprintConfig:
    # Настройки браузерного отпечатка.
    user_agent: str = (
        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
        "AppleWebKit/537.36 (KHTML, like Gecko) "
        "Chrome/135.0.0.0 Safari/537.36"
    )
    viewport_presets: tuple[dict[str, int], ...] = (
        {"width": 1920, "height": 1080},
        {"width": 1600, "height": 900},
        {"width": 1536, "height": 864},
        {"width": 1440, "height": 900},
        {"width": 1366, "height": 768},
    )
    timezone_candidates: tuple[str, ...] = (
        "America/New_York",
        "America/Chicago",
        "America/Los_Angeles",
    )
    locale: str = "en-US"
    sec_ch_ua: str = '"Google Chrome";v="135", "Chromium";v="135", "Not.A/Brand";v="24"'


@dataclass(slots=True)
class GentleModeConfig:
    # Мягкий режим загрузки страницы и capture.
    enabled: bool = os.getenv("IAAI_GENTLE_MODE", "true").strip().lower() in {"1", "true", "yes", "on"}
    capture_same_origin_only: bool = os.getenv("IAAI_CAPTURE_SAME_ORIGIN_ONLY", "true").strip().lower() in {"1", "true", "yes", "on"}
    max_requests: int = int(os.getenv("IAAI_MAX_CAPTURED_REQUESTS", "40"))
    max_json_responses: int = int(os.getenv("IAAI_MAX_CAPTURED_JSON_RESPONSES", "30"))
    warm_scroll_rounds: int = int(os.getenv("IAAI_WARM_SCROLL_ROUNDS", "1"))
    scroll_pause_ms: int = int(os.getenv("IAAI_SCROLL_PAUSE_MS", "900"))
    post_open_idle_ms: int = int(os.getenv("IAAI_POST_OPEN_IDLE_MS", "3500"))


@dataclass(slots=True)
class HumanPaceConfig:
    # Паузы между действиями для более естественного поведения.
    enabled: bool = os.getenv("IAAI_HUMAN_PACE_ENABLED", "true").strip().lower() in {"1", "true", "yes", "on"}
    after_listing_open_min_s: float = float(os.getenv("IAAI_AFTER_LISTING_OPEN_MIN_S", "2.5"))
    after_listing_open_max_s: float = float(os.getenv("IAAI_AFTER_LISTING_OPEN_MAX_S", "4.5"))
    after_filter_action_min_s: float = float(os.getenv("IAAI_AFTER_FILTER_ACTION_MIN_S", "2.0"))
    after_filter_action_max_s: float = float(os.getenv("IAAI_AFTER_FILTER_ACTION_MAX_S", "4.0"))
    before_vehicle_open_min_s: float = float(os.getenv("IAAI_BEFORE_VEHICLE_OPEN_MIN_S", "0.5"))
    before_vehicle_open_max_s: float = float(os.getenv("IAAI_BEFORE_VEHICLE_OPEN_MAX_S", "1.5"))
    after_vehicle_open_min_s: float = float(os.getenv("IAAI_AFTER_VEHICLE_OPEN_MIN_S", "0.3"))
    after_vehicle_open_max_s: float = float(os.getenv("IAAI_AFTER_VEHICLE_OPEN_MAX_S", "1.0"))
    between_vehicles_min_s: float = float(os.getenv("IAAI_BETWEEN_VEHICLES_MIN_S", "0.5"))
    between_vehicles_max_s: float = float(os.getenv("IAAI_BETWEEN_VEHICLES_MAX_S", "1.5"))
    after_page_change_min_s: float = float(os.getenv("IAAI_AFTER_PAGE_CHANGE_MIN_S", "3.0"))
    after_page_change_max_s: float = float(os.getenv("IAAI_AFTER_PAGE_CHANGE_MAX_S", "6.0"))


@dataclass(slots=True)
class ListingConfig:
    # Ограничения и режим обхода листинга.
    cars_url: str = os.getenv("IAAI_CARS_LISTING_URL", "https://www.iaai.com/Vehiclelisting/Cars")
    max_pages_per_run: int = int(os.getenv("IAAI_MAX_PAGES_PER_RUN", "5"))
    max_vehicles_per_run: int = int(os.getenv("IAAI_MAX_VEHICLES_PER_RUN", "100"))
    page_link_limit: int = int(os.getenv("IAAI_PAGE_LINK_LIMIT", "200"))
    include_pagination: bool = os.getenv("IAAI_INCLUDE_PAGINATION", "true").strip().lower() in {"1", "true", "yes", "on"}
    collect_current_page_only: bool = os.getenv("IAAI_COLLECT_CURRENT_PAGE_ONLY", "false").strip().lower() in {"1", "true", "yes", "on"}


@dataclass(slots=True)
class DatabaseConfig:
    # Параметры подключения к БД.
    url: str = os.getenv("IAAI_DATABASE_URL", "sqlite:///iaai_scraper.db")
    echo: bool = os.getenv("IAAI_DATABASE_ECHO", "false").strip().lower() in {"1", "true", "yes", "on"}


@dataclass(slots=True)
class ProxyConfig:
    """Proxy settings for Playwright browser.

    Supports HTTP, HTTPS and SOCKS5 proxies.
    Format: ``protocol://[user:password@]host:port``

    Examples:
        - ``http://proxy.example.com:8080``
        - ``socks5://user:pass@proxy.example.com:1080``
    """
    server: str | None = os.getenv("IAAI_PROXY_SERVER") or None
    username: str | None = os.getenv("IAAI_PROXY_USERNAME") or None
    password: str | None = os.getenv("IAAI_PROXY_PASSWORD") or None

    @property
    def enabled(self) -> bool:
        return bool(self.server)

    def to_playwright_dict(self) -> dict[str, str] | None:
        """Return a dict suitable for Playwright ``proxy=`` kwarg, or *None*."""
        if not self.server:
            return None
        result: dict[str, str] = {"server": self.server}
        if self.username:
            result["username"] = self.username
        if self.password:
            result["password"] = self.password
        return result


@dataclass(slots=True)
class Settings:
    # Единая точка всех runtime-настроек приложения.
    home_url: str = "https://www.iaai.com/"
    default_timeout_ms: int = int(os.getenv("IAAI_TIMEOUT_MS", "45000"))
    network_settle_ms: int = int(os.getenv("IAAI_NETWORK_SETTLE_MS", "800"))
    max_retries: int = int(os.getenv("IAAI_MAX_RETRIES", "3"))
    retry_delay_seconds: float = float(os.getenv("IAAI_RETRY_DELAY_SECONDS", "2.5"))
    retry_backoff_multiplier: float = float(os.getenv("IAAI_RETRY_BACKOFF_MULTIPLIER", "2.0"))
    retry_jitter_seconds: float = float(os.getenv("IAAI_RETRY_JITTER_SECONDS", "0.25"))
    headless: bool = os.getenv("IAAI_HEADLESS", "true").strip().lower() in {"1", "true", "yes", "on"}
    raw_output_json: str | None = os.getenv("IAAI_RAW_OUTPUT_JSON") or None
    log_level: str = os.getenv("IAAI_LOG_LEVEL", "INFO")
    log_file: str | None = os.getenv("IAAI_LOG_FILE") or None
    enable_trace_id_logs: bool = os.getenv("IAAI_ENABLE_TRACE_ID_LOGS", "true").strip().lower() in {"1", "true", "yes", "on"}
    scheduler_interval_minutes: int = int(os.getenv("IAAI_SCHEDULER_INTERVAL_MINUTES", "60"))
    fingerprint: FingerprintConfig = field(default_factory=FingerprintConfig)
    gentle: GentleModeConfig = field(default_factory=GentleModeConfig)
    pace: HumanPaceConfig = field(default_factory=HumanPaceConfig)
    listing: ListingConfig = field(default_factory=ListingConfig)
    database: DatabaseConfig = field(default_factory=DatabaseConfig)
    proxy: ProxyConfig = field(default_factory=ProxyConfig)


# Глобальные настройки по умолчанию.
settings = Settings()