/// What a pick offers and what it may copy. `mime_types` is the document
/// sheet's own filter, comma-separated; empty offers every type.
#[derive(Debug, Clone, Serialize, Deserialize, Default)]
#[serde(rename_all = "camelCase")]
pub struct PickFileArgs {
    pub mime_types: Option<String>,
    /// How big a document may be COPIED into the app's cache when it has no
    /// path of its own on this phone. Zero refuses the copy.
    pub max_copy_bytes: u32,
}

/// A picked document. `path` is the document's own when this phone has one
/// for it, else the cache copy's (`copied`); `name` is the display name the
/// provider gave it, which is what decides a playlist's format and title.
#[derive(Debug, Clone, Serialize, Deserialize, Default)]
#[serde(rename_all = "camelCase")]
pub struct PickedFile {
    pub path: Option<String>,
    #[serde(default)]
    pub name: String,
    #[serde(default)]
    pub size: Option<u64>,
    #[serde(default)]
    pub copied: bool,
}