from dataclasses import dataclass, asdict, field
from pathlib import Path
import json


@dataclass
class Config:
    # Immich server
    immich_url: str = ""
    immich_api_key: str = ""
    # Display
    image_duration: float = 10.0
    transition_duration: float = 0.5
    max_framerate: float = 30.0
    auto_transition: bool = True
    display_size: str = "preview"  # 'fullsize', 'preview', 'thumbnail'
    # Cache
    max_cache_assets: int = 100
    # Albums data
    album_list: list[str] = field(default_factory=list)

    @classmethod
    def load(cls, filepath):
        with open(filepath, "r") as fp:
            return cls(**json.load(fp))

    def save(self, filepath):
        Path(filepath).parent.mkdir(parents=True, exist_ok=True)  # Create dir if not existing
        with open(filepath, "w") as fp:
            json.dump(asdict(self), fp, indent=2)

    def update(self, **config):
        for key, value in config.items():
            setattr(self, key, value)