"""
Configuration Module
Handles environment variables and application settings
"""

import os
from typing import List
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    """Application settings loaded from environment variables"""
    
    # Database
    DATABASE_URL: str = "postgresql://bmc_hub:bmc_hub@localhost:5432/bmc_hub"
    
    # API
    API_HOST: str = "0.0.0.0"
    API_PORT: int = 8000
    
    # Security
    SECRET_KEY: str = "dev-secret-key-change-in-production"
    ALLOWED_ORIGINS: List[str] = ["http://localhost:8000", "http://localhost:3000"]
    
    # Logging
    LOG_LEVEL: str = "INFO"
    LOG_FILE: str = "logs/app.log"
    
    # e-conomic Integration
    ECONOMIC_API_URL: str = "https://restapi.e-conomic.com"
    ECONOMIC_APP_SECRET_TOKEN: str = ""
    ECONOMIC_AGREEMENT_GRANT_TOKEN: str = ""
    ECONOMIC_READ_ONLY: bool = True
    ECONOMIC_DRY_RUN: bool = True
    
    # vTiger CRM Integration
    VTIGER_URL: str = ""
    VTIGER_USERNAME: str = ""
    VTIGER_API_KEY: str = ""
    VTIGER_PASSWORD: str = ""  # Fallback hvis API key ikke virker
    
    # Time Tracking Module - vTiger Integration (Isoleret)
    TIMETRACKING_VTIGER_READ_ONLY: bool = True  # 🚨 SAFETY: Bloker ALLE skrivninger til vTiger
    TIMETRACKING_VTIGER_DRY_RUN: bool = True    # 🚨 SAFETY: Log uden at synkronisere
    
    # Time Tracking Module - e-conomic Integration (Isoleret)
    TIMETRACKING_ECONOMIC_READ_ONLY: bool = True  # 🚨 SAFETY: Bloker ALLE skrivninger til e-conomic
    TIMETRACKING_ECONOMIC_DRY_RUN: bool = True    # 🚨 SAFETY: Log uden at eksportere
    TIMETRACKING_EXPORT_TYPE: str = "draft"       # draft|booked (draft er sikrest)
    
    # Time Tracking Module - Business Logic
    TIMETRACKING_DEFAULT_HOURLY_RATE: float = 850.00  # DKK pr. time (fallback)
    TIMETRACKING_AUTO_ROUND: bool = True               # Auto-afrund til nærmeste 0.5 time
    TIMETRACKING_ROUND_INCREMENT: float = 0.5          # Afrundingsinterval (0.25, 0.5, 1.0)
    TIMETRACKING_ROUND_METHOD: str = "up"              # up (op til), nearest (nærmeste), down (ned til)
    TIMETRACKING_REQUIRE_APPROVAL: bool = True         # Kræv manuel godkendelse (ikke auto-approve)
    
    # Ollama AI Integration
    OLLAMA_ENDPOINT: str = "http://ai_direct.cs.blaahund.dk"
    OLLAMA_MODEL: str = "qwen2.5-coder:7b"  # qwen2.5-coder fungerer bedre til JSON udtrækning
    
    # Email System Configuration
    EMAIL_TO_TICKET_ENABLED: bool = False  # 🚨 SAFETY: Disable auto-processing until configured
    
    # Email Fetching (IMAP)
    USE_GRAPH_API: bool = False  # Use Microsoft Graph API instead of IMAP (preferred)
    IMAP_SERVER: str = "outlook.office365.com"
    IMAP_PORT: int = 993
    IMAP_USE_SSL: bool = True
    IMAP_USERNAME: str = ""
    IMAP_PASSWORD: str = ""
    IMAP_FOLDER: str = "INBOX"
    IMAP_READ_ONLY: bool = True  # 🚨 SAFETY: Never mark emails as read or modify mailbox
    
    # Microsoft Graph API (OAuth2)
    GRAPH_TENANT_ID: str = ""
    GRAPH_CLIENT_ID: str = ""
    GRAPH_CLIENT_SECRET: str = ""
    GRAPH_USER_EMAIL: str = ""  # Email account to monitor
    
    # Email Processing
    EMAIL_PROCESS_INTERVAL_MINUTES: int = 5  # Background job frequency
    EMAIL_MAX_FETCH_PER_RUN: int = 50  # Limit emails per processing cycle
    EMAIL_RETENTION_DAYS: int = 90  # Days to keep emails before soft delete
    
    # Email Classification (AI)
    EMAIL_AI_ENABLED: bool = True
    EMAIL_AI_CONFIDENCE_THRESHOLD: float = 0.7  # Minimum confidence for auto-processing
    EMAIL_AUTO_CLASSIFY: bool = True  # Run AI classification on new emails
    
    # Email Rules Engine
    EMAIL_RULES_ENABLED: bool = True
    EMAIL_RULES_AUTO_PROCESS: bool = False  # 🚨 SAFETY: Require manual approval initially
    
    # Company Info
    OWN_CVR: str = "29522790"  # BMC Denmark ApS - ignore when detecting vendors
    
    # File Upload
    UPLOAD_DIR: str = "uploads"
    MAX_FILE_SIZE_MB: int = 50
    ALLOWED_EXTENSIONS: List[str] = [".pdf", ".png", ".jpg", ".jpeg", ".txt", ".csv"]
    
    class Config:
        env_file = ".env"
        case_sensitive = True
        extra = "ignore"  # Ignore extra fields from .env


settings = Settings()