from dataclasses import dataclass, asdict, field
import json


@dataclass
class AlbumList:
    name: str
    album_keys: list[str]


@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_lists: list[AlbumList] = field(default_factory=list)
    album_list_selected: int = None

    def __post_init__(self):
        self.album_lists = [ AlbumList(*a) for a in self.album_lists ]

    def __dict__(self):
        return asdict(self)

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

    def save(self, filepath):
        with open(filepath, "w") as fp:
            json.dump(asdict(self), fp, indent=2)