# config.py
# Modern configuration management using environment variables

import os
import discord
from discord import Color
from dotenv import load_dotenv
from typing import Optional

# Load environment variables from .env file
load_dotenv()

# ===================================
# Environment Detection
# ===================================
ENVIRONMENT = os.getenv("ENVIRONMENT", "dev").lower()
IS_PRODUCTION = ENVIRONMENT == "live"
IS_DEVELOPMENT = ENVIRONMENT == "dev"

# ===================================
# Discord Configuration
# ===================================
def get_discord_token() -> str:
    """Get the appropriate Discord token based on environment"""
    if IS_PRODUCTION:
        token = os.getenv("DISCORD_TOKEN_LIVE")
        if not token:
            raise ValueError("DISCORD_TOKEN_LIVE not found in environment!")
        return token
    else:
        token = os.getenv("DISCORD_TOKEN_DEV")
        if not token:
            raise ValueError("DISCORD_TOKEN_DEV not found in environment!")
        return token


def get_prefix() -> str:
    """Get command prefix (default: =)"""
    return os.getenv("DISCORD_PREFIX", "=")


# ===================================
# Spotify Configuration
# ===================================
def get_spotify_creds() -> tuple[str, str]:
    """Get Spotify API credentials"""
    client_id = os.getenv("SPOTIFY_CLIENT_ID")
    client_secret = os.getenv("SPOTIFY_CLIENT_SECRET")

    if not client_id or not client_secret:
        raise ValueError("Spotify credentials not found in environment!")

    return client_id, client_secret


# ===================================
# Database Configuration
# ===================================
def get_db_path() -> str:
    """Get SQLite database path"""
    return os.getenv("DB_PATH", "./data/music.db")


# Future PostgreSQL config
def get_postgres_url() -> Optional[str]:
    """Get PostgreSQL connection URL (for future migration)"""
    host = os.getenv("DB_HOST")
    port = os.getenv("DB_PORT", "5432")
    name = os.getenv("DB_NAME")
    user = os.getenv("DB_USER")
    password = os.getenv("DB_PASSWORD")

    if all([host, name, user, password]):
        return f"postgresql://{user}:{password}@{host}:{port}/{name}"
    return None


# ===================================
# Bot Status/Presence
# ===================================
def get_status() -> discord.Activity:
    """Get bot status/presence"""
    status_type = os.getenv("STATUS_TYPE", "listening").lower()
    status_text = os.getenv("STATUS_TEXT", "Zilean's Theme")
    status_url = os.getenv("STATUS_URL")

    return translate_status(status_type, status_text, status_url)


def translate_status(
    status_type: str,
    status_text: str,
    status_url: Optional[str] = None
) -> discord.Activity:
    """Convert status type string to Discord Activity"""

    status_map = {
        "playing": discord.ActivityType.playing,
        "streaming": discord.ActivityType.streaming,
        "listening": discord.ActivityType.listening,
        "watching": discord.ActivityType.watching,
        "competing": discord.ActivityType.competing,
    }

    activity_type = status_map.get(status_type)
    if not activity_type:
        raise ValueError(f"Invalid status type: {status_type}")

    # Streaming requires URL
    if status_type == "streaming":
        if not status_url:
            raise ValueError("Streaming status requires STATUS_URL")
        return discord.Activity(
            type=activity_type,
            name=status_text,
            url=status_url
        )

    return discord.Activity(type=activity_type, name=status_text)


# ===================================
# Color Scheme
# ===================================
def get_color(color_name: str) -> Color:
    """Get color from environment (hex format)"""
    color_map = {
        "primary": os.getenv("COLOR_PRIMARY", "#7289DA"),
        "success": os.getenv("COLOR_SUCCESS", "#43B581"),
        "error": os.getenv("COLOR_ERROR", "#F04747"),
        "warning": os.getenv("COLOR_WARNING", "#FAA61A"),
    }

    hex_value = color_map.get(color_name.lower())
    if not hex_value:
        # Default to Discord blurple
        hex_value = "#7289DA"

    return Color.from_str(hex_value)


# ===================================
# Logging Configuration
# ===================================
def get_log_level() -> str:
    """Get logging level from environment"""
    return os.getenv("LOG_LEVEL", "INFO").upper()


# ===================================
# Legacy Support (for backward compatibility)
# ===================================
def get_login(bot: str) -> str:
    """Legacy function - maps to new get_discord_token()"""
    # Ignore the 'bot' parameter, use ENVIRONMENT instead
    return get_discord_token()


# ===================================
# Validation
# ===================================
def validate_config():
    """Validate that all required config is present"""
    errors = []

    # Check Discord token
    try:
        get_discord_token()
    except ValueError as e:
        errors.append(str(e))

    # Check Spotify creds
    try:
        get_spotify_creds()
    except ValueError as e:
        errors.append(str(e))

    if errors:
        error_msg = "\n".join(errors)
        raise ValueError(f"Configuration errors:\n{error_msg}")

    print(f"✅ Configuration validated (Environment: {ENVIRONMENT})")


# ===================================
# Startup Info
# ===================================
def print_config_info():
    """Print configuration summary (without secrets!)"""
    print("=" * 50)
    print("🎵 Groovy-Zilean Configuration")
    print("=" * 50)
    print(f"Environment: {ENVIRONMENT.upper()}")
    print(f"Prefix: {get_prefix()}")
    print(f"Database: {get_db_path()}")
    print(f"Log Level: {get_log_level()}")
    print(f"Spotify: {'Configured ✅' if os.getenv('SPOTIFY_CLIENT_ID') else 'Not configured ❌'}")
    print("=" * 50)