//! TRACES: NFR-ARCH-4
//! Thumbnail store errors.
//!
//! A thumbnail is a cache entry, never authoritative — every failure here is
//! recoverable by regenerating from the source, so nothing in this module is
//! fatal to the app.

/// Something went wrong reading or writing the store.
#[derive(Debug, thiserror::Error)]
pub enum ThumbError {
    #[error("sqlite: {0}")]
    Sqlite(#[from] rusqlite::Error),

    /// The index names a shard whose file is absent — a partial sync, or a
    /// manual deletion. The entry is treated as a miss and regenerated.
    #[error("shard {0} is missing")]
    MissingShard(u32),

    #[error("io: {0}")]
    Io(String),
}