mime_maps = {
    "image": {
        "jpg": {"ext": ".jpg", "mimes": ["image/jpeg", "image/jpg"]},
        "png": {"ext": ".png", "mimes": ["image/png"]},
        "gif": {"ext": ".gif", "mimes": ["image/gif"]},
        "webp": {"ext": ".webp", "mimes": ["image/webp"]},
        "avif": {"ext": ".avif", "mimes": ["image/avif"]},
        "jxl": {"ext": ".jxl", "mimes": ["image/jxl"]},
        "bmp": {"ext": ".bmp", "mimes": ["image/bmp"]},
        "heic": {"ext": ".heic", "mimes": ["image/heic"]},
        "heif": {"ext": ".heif", "mimes": ["image/heif"]},
        "ico": {"ext": ".ico", "mimes": ["image/x-icon", "image/vnd.microsoft.icon"]},
        "qoi": {"ext": ".qoi", "mimes": ["image/qoi"]},
        "tiff": {"ext": ".tiff", "mimes": ["image/tiff", "image/x-tiff"]},
        "svg": {"ext": ".svg", "mimes": ["image/svg+xml"]},
    },
    "image_sequence": {
        "apng": {"ext": ".apng", "mimes": ["image/apng"], "sequence": True},
        "avifs": {"ext": ".avifs", "mimes": ["image/avif-sequence"], "sequence": True},
        "heics": {"ext": ".heics", "mimes": ["image/heic-sequence"], "sequence": True},
        "heifs": {"ext": ".heifs", "mimes": ["image/heif-sequence"], "sequence": True},
    },
    "video": {
        "mp4": {"ext": ".mp4", "mimes": ["video/mp4", "audio/mp4"]},
        "webm": {"ext": ".webm", "mimes": ["video/webm", "audio/webm"]},
        "mov": {"ext": ".mov", "mimes": ["video/quicktime"]},
        "ogv": {"ext": ".ogv", "mimes": ["video/ogg"]},
        "mpeg": {"ext": ".mpeg", "mimes": ["video/mpeg"]},
        "avi": {"ext": ".avi", "mimes": ["video/x-msvideo", "video/avi"]},
        "flv": {"ext": ".flv", "mimes": ["video/x-flv"]},
        "mkv": {
            "ext": ".mkv",
            "mimes": ["video/x-matroska", "application/x-matroska"],
            "audio_only_ext": ".mka",
        },
        "wmv": {"ext": ".wmv", "mimes": ["video/x-ms-wmv"]},
        "rv": {"ext": ".rv", "mimes": ["video/vnd.rn-realvideo"]},
    },
    "audio": {
        "mp3": {"ext": ".mp3", "mimes": ["audio/mpeg", "audio/mp3"]},
        "m4a": {"ext": ".m4a", "mimes": ["audio/mp4", "audio/x-m4a"]},
        "ogg": {"ext": ".ogg", "mimes": ["audio/ogg"]},
        "opus": {"ext": ".opus", "mimes": ["audio/opus"]},
        "flac": {"ext": ".flac", "mimes": ["audio/flac"]},
        "wav": {"ext": ".wav", "mimes": ["audio/wav", "audio/x-wav", "audio/vnd.wave"]},
        "wma": {"ext": ".wma", "mimes": ["audio/x-ms-wma"]},
        "tta": {"ext": ".tta", "mimes": ["audio/x-tta"]},
        "wv": {"ext": ".wv", "mimes": ["audio/x-wavpack", "audio/wavpack"]},
        "mka": {"ext": ".mka", "mimes": ["audio/x-matroska", "video/x-matroska"]},
    },
    "document": {
        "pdf": {"ext": ".pdf", "mimes": ["application/pdf"]},
        "epub": {"ext": ".epub", "mimes": ["application/epub+zip"]},
        "djvu": {"ext": ".djvu", "mimes": ["application/vnd.djvu"]},
        "rtf": {"ext": ".rtf", "mimes": ["application/rtf"]},
        "docx": {
            "ext": ".docx",
            "mimes": ["application/vnd.openxmlformats-officedocument.wordprocessingml.document"],
        },
        "xlsx": {
            "ext": ".xlsx",
            "mimes": ["application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"],
        },
        "pptx": {
            "ext": ".pptx",
            "mimes": ["application/vnd.openxmlformats-officedocument.presentationml.presentation"],
        },
        "doc": {"ext": ".doc", "mimes": ["application/msword"]},
        "xls": {"ext": ".xls", "mimes": ["application/vnd.ms-excel"]},
        "ppt": {"ext": ".ppt", "mimes": ["application/vnd.ms-powerpoint"]},
    },
    "archive": {
        "zip": {"ext": ".zip", "mimes": ["application/zip"]},
        "7z": {"ext": ".7z", "mimes": ["application/x-7z-compressed"]},
        "rar": {"ext": ".rar", "mimes": ["application/x-rar-compressed", "application/vnd.rar"]},
        "gz": {"ext": ".gz", "mimes": ["application/gzip", "application/x-gzip"]},
        "tar": {"ext": ".tar", "mimes": ["application/x-tar"]},
        "cbz": {
            "ext": ".cbz",
            "mimes": ["application/zip"],
            "note": "zip archive of images; prefer extension-based detection for comics",
        },
    },
    "project": {
        "clip": {"ext": ".clip", "mimes": ["application/clip"]},
        "kra": {"ext": ".kra", "mimes": ["application/x-krita"]},
        "procreate": {"ext": ".procreate", "mimes": ["application/x-procreate"]},
        "psd": {"ext": ".psd", "mimes": ["image/vnd.adobe.photoshop"]},
        "swf": {"ext": ".swf", "mimes": ["application/x-shockwave-flash"]},
    },
    "other": {
        "octet-stream": {"ext": "", "mimes": ["application/octet-stream"]},
        "json": {"ext": ".json", "mimes": ["application/json"]},
        "xml": {"ext": ".xml", "mimes": ["application/xml", "text/xml"]},
        "csv": {"ext": ".csv", "mimes": ["text/csv"]},
    },
}


def get_type_from_ext(ext: str) -> str:
    """Determine the type (e.g., 'image', 'video', 'audio') from file extension.

    Args:
        ext: File extension (with or without leading dot, e.g., 'jpg' or '.jpg')

    Returns:
        Type string (e.g., 'image', 'video', 'audio') or 'other' if unknown
    """
    if not ext:
        return "other"

    ext_clean = ext.lstrip(".").lower()

    for type_name, extensions_dict in mime_maps.items():
        if ext_clean in extensions_dict:
            return type_name

    return "other"


# Canonical supported extension set for all stores/cmdlets.
# Derived from mime_maps so there is a single source of truth.
ALL_SUPPORTED_EXTENSIONS: set[str] = {
    spec["ext"].lower()
    for group in mime_maps.values()
    for spec in group.values()
    if isinstance(spec, dict) and isinstance(spec.get("ext"), str) and spec.get("ext")
}