"""FlowDeck — Configuration via pydantic-settings."""
from __future__ import annotations

from pathlib import Path

from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(
        env_file=".env", env_file_encoding="utf-8", extra="ignore"
    )

    # Gitea
    gitea_url: str = "https://git.dracodev.net"
    gitea_token: str = "change-me"
    gitea_oauth_client_id: str = "test-id"
    gitea_oauth_client_secret: str = "test-secret"
    gitea_webhook_secret: str = ""

    # GitHub
    github_oauth_client_id: str = ""
    github_oauth_client_secret: str = ""

    # Standalone mode
    standalone: bool = False  # FLOWDECK_STANDALONE=true in .env

    # OAuth2 — empty = dynamic per-request redirect URI (Host + X-Forwarded-*),
    # set this ONLY to pin an exact URI (must be registered in Gitea/GitHub)
    oauth_redirect_uri: str = ""

    # Webhook
    webhook_base_url: str = "http://localhost:8080"

    # App
    app_secret_key: str = "change-me-to-random"
    app_host: str = "0.0.0.0"
    app_port: int = 8080
    log_level: str = "INFO"
    default_lang: str = "fr"

    # Rate limiting
    rate_limit_enabled: bool = True
    rate_limit_requests: int = 60  # per minute

    # Database
    database_url: str = "sqlite:////data/flowdeck.db"

    # Sync
    sync_interval: int = 60
    gitea_cache_ttl: int = 30

    # Backup (v5.2.0) — scheduled daily snapshot of the SQLite file
    backup_enabled: bool = True
    backup_dir: str = "/data/backups"
    backup_interval_hours: int = 24
    backup_keep: int = 30

    # Forge projects sync (v5.2.0) — periodic refresh of `projects` table
    project_sync_enabled: bool = True
    project_sync_interval_hours: int = 1

    # Reminders (v5.8.0) — background scan for due date reminders
    reminders_enabled: bool = True
    reminder_scan_interval_seconds: int = 60

    # Email / SMTP notifications (v4.9.0) — optional. If smtp_host is empty,
    # email notifications are skipped (only in-app notifications are delivered).
    smtp_host: str = ""
    smtp_port: int = 587
    smtp_user: str = ""
    smtp_password: str = ""
    smtp_from: str = "FlowDeck <no-reply@flowdeck.local>"
    smtp_use_tls: bool = True
    app_base_url: str = "http://localhost:8080"

    # FlowDeck Agent (v4.10.0) — multi-LLM. Empty keys → offline/mock mode
    # (deterministic rule-based planner so the agent works without any API key).
    agent_enabled: bool = True
    llm_provider: str = "offline"      # any id from llm_client.PROVIDERS
                                       # (openai, anthropic, mistral, cohere,
                                       #  google, groq, deepseek, openrouter,
                                       #  nvidia, together, perplexity, xai,
                                       #  qwencloud, minimax, morph, fireworks,
                                       #  cerebras, sambanova, chutes, xiaomi,
                                       #  sealion, sensenova, ollama, offline)
    llm_model: str = "gpt-4o"
    llm_api_key: str = ""
    llm_api_base: str = ""             # custom base URL (Ollama, OpenRouter, ...)
    agent_max_iterations: int = 12
    agent_max_tokens_budget: int = 500000
    agent_run_timeout_seconds: int = 300

    @property
    def db_path(self) -> Path:
        if self.database_url == "sqlite:///:memory:":
            return Path(":memory:")  # Special SQLite in-memory
        if self.database_url.startswith("sqlite:///"):
            p = self.database_url.replace("sqlite:///", "", 1)
            # On Windows, don't prepend / if path starts with a drive letter
            import re
            if re.match(r'^[a-zA-Z]:', p):
                return Path(p)
            return Path("/" + p)
        return Path("/data/flowdeck.db")


settings = Settings()