from pydantic_settings import BaseSettings
from pathlib import Path


class Settings(BaseSettings):
    app_name: str = "GWÖ-Antragsprüfer"
    app_version: str = "1.0.2"
    prompt_version: str = "v4.1"

    # Paths
    base_dir: Path = Path(__file__).resolve().parent.parent
    data_dir: Path = base_dir / "data"
    reports_dir: Path = base_dir / "reports"
    kontext_dir: Path = Path(__file__).resolve().parent / "kontext"
    db_path: Path = data_dir / "gwoe-antraege.db"

    # LLM
    dashscope_api_key: str = ""
    dashscope_base_url: str = "https://dashscope-intl.aliyuncs.com/compatible-mode/v1"
    llm_model_default: str = "qwen-plus-latest"
    llm_model_premium: str = "qwen-max"

    # Embedding-Modell: neue Rows werden immer mit embedding_model_write geschrieben,
    # Lese-Queries filtern nach embedding_model_read. Zwei Settings erlauben einen
    # Zero-Downtime-Switch von v3 auf v4 (siehe Issue #123):
    #   Phase 1: write=v4, read=v3 → Prod läuft weiter, Reindex füllt v4-Rows
    #   Phase 2: write=v4, read=v4 → Switch aktiv, alte v3-Rows können gelöscht werden
    embedding_model_write: str = "text-embedding-v4"
    embedding_model_read: str = "text-embedding-v3"
    embedding_dimensions: int = 1024

    # Keycloak
    keycloak_url: str = ""
    keycloak_realm: str = ""
    keycloak_client_id: str = ""
    keycloak_admin_user: str = ""
    keycloak_admin_password: str = ""

    # Server
    host: str = "0.0.0.0"
    port: int = 8000

    # SMTP (Issue #124 E-Mail-Benachrichtigung)
    # 1blu: smtp.1blu.de:465 SSL, username = Postfachname (NICHT E-Mail!),
    # z.B. "q294440_0-gwoe-toppyr". Passwort via ENV SMTP_PASSWORD.
    smtp_host: str = ""
    smtp_port: int = 465
    smtp_user: str = ""
    smtp_password: str = ""
    smtp_from_email: str = "noreply@toppyr.de"
    smtp_from_name: str = "GWÖ-Antragsprüfer"
    # URL-Basis für Links in Mails (Unsubscribe, Detail-Ansicht)
    base_url: str = "https://gwoe.toppyr.de"
    # Token für Unsubscribe-Links (HMAC-Secret)
    unsubscribe_secret: str = "change-me-in-prod"

    # Gitea-API-Token für Feedback-Issues (Issue #feedback-widget)
    # Wert in .env: GITEA_TOKEN=<token>
    # Token-Quelle: cat ~/.claude/.gitea-token
    gitea_token: str = ""
    gitea_api_url: str = "https://repo.toppyr.de/api/v1"
    gitea_repo_owner: str = "tobias"
    gitea_repo_name: str = "gwoe-antragspruefer"

    model_config = {"env_file": ".env", "env_file_encoding": "utf-8"}


settings = Settings()