import os
import sys
from pathlib import Path


def get_base_path() -> Path:
    if getattr(sys, 'frozen', False):
        if hasattr(sys, '_MEIPASS'):
            return Path(sys._MEIPASS)
        else:
            return Path(sys.executable).parent
    return Path(__file__).parent.parent


class Config:
    BASE_PATH = get_base_path()
    IS_FROZEN = getattr(sys, 'frozen', False)

    # Server settings
    HOST = os.environ.get('SUPERTONIC3_HOST', '0.0.0.0')
    PORT = int(os.environ.get('SUPERTONIC3_PORT', '7860'))

    # Model settings
    LANGUAGE = os.environ.get('SUPERTONIC3_LANGUAGE', None)
    AUTO_DOWNLOAD = os.environ.get('SUPERTONIC3_AUTO_DOWNLOAD', 'true').lower() == 'true'

    # Sample rate (supertonic3 outputs 44100 Hz)
    SAMPLE_RATE = 44100

    # SuperTonic3 supported languages
    SUPPORTED_LANGUAGES = [
        'afrikaans', 'arabic', 'bengali', 'bulgarian', 'czech', 'danish',
        'german', 'greek', 'english', 'spanish', 'finnish', 'french',
        'hindi', 'hungarian', 'indonesian', 'italian', 'japanese',
        'korean', 'malayalam', 'dutch', 'polish', 'portuguese',
        'romanian', 'russian', 'swahili', 'swedish', 'tamil', 'telugu',
        'thai', 'turkish', 'ukrainian', 'urdu', 'vietnamese',
        'chinese',
    ]

    # Voice directory for custom voice samples
    VOICES_DIR = os.environ.get('SUPERTONIC3_VOICES_DIR', None)

    # Voice presets directory (JSON style embeddings, tracked in git)
    VOICE_PRESETS_DIR = os.environ.get(
        'SUPERTONIC3_VOICE_PRESETS_DIR',
        str(BASE_PATH / 'voice_presets'),
    )

    DEFAULT_VOICE = os.environ.get('SUPERTONIC3_DEFAULT_VOICE', 'M1')

    # Built-in voice names (M1-M5 = male, F1-F5 = female)
    BUILTIN_VOICES = ['M1', 'M2', 'M3', 'M4', 'M5', 'F1', 'F2', 'F3', 'F4', 'F5']

    # Supported extensions for custom voice samples
    VOICE_EXTENSIONS = ('.wav', '.mp3', '.flac')

    # Supported extensions for voice preset files (JSON style embeddings)
    VOICE_PRESET_EXTENSIONS = ('.json',)

    # Streaming default
    STREAM_DEFAULT = os.environ.get('SUPERTONIC3_STREAM_DEFAULT', 'false').lower() == 'true'

    # Text preprocessing default
    TEXT_PREPROCESS_DEFAULT = (
        os.environ.get('SUPERTONIC3_TEXT_PREPROCESS_DEFAULT', 'false').lower() == 'true'
    )

    # Docker detection
    @staticmethod
    def _is_docker() -> bool:
        if os.path.exists('/.dockerenv'):
            return True
        try:
            with open('/proc/1/cgroup') as f:
                return any('docker' in line or 'containerd' in line for line in f)
        except (FileNotFoundError, PermissionError):
            return False

    IS_DOCKER = _is_docker.__func__()

    # Logging
    LOG_LEVEL = os.environ.get('SUPERTONIC3_LOG_LEVEL', 'INFO')
    LOG_DIR = os.environ.get('SUPERTONIC3_LOG_DIR', str(BASE_PATH / 'logs'))
    LOG_FILE = os.environ.get('SUPERTONIC3_LOG_FILE', 'supertonic3.log')
    LOG_MAX_BYTES = int(os.environ.get('SUPERTONIC3_LOG_MAX_BYTES', str(10 * 1024 * 1024)))
    LOG_BACKUP_COUNT = int(os.environ.get('SUPERTONIC3_LOG_BACKUP_COUNT', '5'))

    @classmethod
    def get_template_folder(cls) -> str:
        return str(cls.BASE_PATH / 'templates')

    @classmethod
    def get_static_folder(cls) -> str:
        return str(cls.BASE_PATH / 'static')