628 lines
23 KiB
Rust
628 lines
23 KiB
Rust
//! The LightCraft library (catalog).
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//!
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//! State changes only through [`Op`]s. [`Catalog::apply`] returns the inverse op, which gives:
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//! - **persistence**: ops are appended to a log (JSON lines) and replayed on load after the last
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//! snapshot — crash-safe and diff-friendly (see [`journal`]);
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//! - **undo/redo**: the engine keeps inverse ops;
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//! - **determinism**: replaying the log reproduces the state exactly (property-tested).
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#![forbid(unsafe_code)]
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#![deny(clippy::unwrap_used, clippy::expect_used, clippy::panic, clippy::unimplemented, clippy::todo, clippy::unreachable)]
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pub mod dates;
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pub mod journal;
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pub mod keywords;
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pub mod model;
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pub mod query;
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pub mod rules;
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pub mod stacks;
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pub mod store;
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use std::collections::BTreeMap;
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use std::sync::Arc;
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pub use dates::{DateRun, GroupBy};
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pub use journal::{Journal, LoadReport, PersistStats, SnapshotPolicy, SnapshotTiming};
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pub use keywords::KeywordNode;
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use lightcraft_develop::DevelopSettings;
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pub use model::*;
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pub use query::{DateGroup, Filter, RatingOp, Sort, SortKey};
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pub use rules::{Match, Rule, RuleSet};
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use serde::{Deserialize, Serialize};
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pub use store::{FsStore, MemStore, Store};
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#[derive(Debug, thiserror::Error, PartialEq)]
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pub enum CatalogError {
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#[error("no such photo {0:?}")]
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NoPhoto(PhotoId),
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#[error("no such album {0:?}")]
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NoAlbum(AlbumId),
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#[error("no such stack {0:?}")]
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NoStack(StackId),
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#[error("invalid: {0}")]
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Invalid(String),
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#[error("corrupt catalog data: {0}")]
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Corrupt(String),
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#[error("catalog storage: {0}")]
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Io(String),
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}
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pub type Result<T> = std::result::Result<T, CatalogError>;
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/// Maximum History entries kept per photo.
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pub const HISTORY_LIMIT: usize = 200;
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/// Every catalog mutation.
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
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#[serde(tag = "op", rename_all = "camelCase")]
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pub enum Op {
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AddPhoto {
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photo: Box<Photo>,
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},
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RemovePhoto {
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id: PhotoId,
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},
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SetRating {
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id: PhotoId,
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rating: u8,
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},
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SetFlag {
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id: PhotoId,
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flag: Flag,
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},
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SetLabel {
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id: PhotoId,
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label: Option<ColorLabel>,
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},
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SetDevelop {
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id: PhotoId,
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settings: Arc<DevelopSettings>,
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label: String,
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edited: Option<String>,
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},
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SetMeta {
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id: PhotoId,
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meta: Box<Meta>,
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},
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SetDeleted {
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id: PhotoId,
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deleted: bool,
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},
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/// Browsed-only (`true`) or part of the library.
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SetLocal {
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id: PhotoId,
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local: bool,
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},
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SetVersions {
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id: PhotoId,
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versions: Vec<Version>,
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},
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SetHistory {
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id: PhotoId,
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history: Vec<HistoryStep>,
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},
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/// Append one History entry (dropping the oldest beyond [`HISTORY_LIMIT`]). Logged instead of
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/// a full `SetHistory` so each edit costs one step in the op log.
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PushHistory {
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id: PhotoId,
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step: HistoryStep,
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},
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AddAlbum {
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album: Album,
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},
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RemoveAlbum {
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id: AlbumId,
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},
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RenameAlbum {
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id: AlbumId,
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name: String,
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},
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MoveAlbum {
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id: AlbumId,
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parent: Option<AlbumId>,
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},
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SetAlbumPhotos {
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id: AlbumId,
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photos: Vec<PhotoId>,
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},
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SetAlbumCover {
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id: AlbumId,
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cover: Option<PhotoId>,
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},
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/// Replace a smart album's rules.
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SetAlbumRules {
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id: AlbumId,
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rules: Box<Filter>,
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},
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AddStack {
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stack: Stack,
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},
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RemoveStack {
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id: StackId,
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},
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/// Replace a stack's members (first = top) and collapsed state.
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SetStack {
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id: StackId,
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photos: Vec<PhotoId>,
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collapsed: bool,
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},
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/// Set a photo's capture time (ISO 8601 local time; `None` = unknown).
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SetCaptured {
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id: PhotoId,
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captured: Option<String>,
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},
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/// Assisted culling scores.
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SetAnalysis {
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id: PhotoId,
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analysis: Option<crate::Analysis>,
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},
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/// Rename a photo: its file name and the source it points to. Applying the op never touches
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/// the disk — the engine moves the file before it commits (and on undo/redo).
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SetFile {
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id: PhotoId,
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file_name: String,
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source: Source,
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},
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/// Point a photo at its file's new location (a moved or renamed original found again). Unlike
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/// [`Op::SetFile`], undo and redo never move files.
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Relink {
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id: PhotoId,
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file_name: String,
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source: Source,
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/// The file's format when it changes too (Convert to DNG).
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#[serde(default, skip_serializing_if = "Option::is_none")]
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format: Option<String>,
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},
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/// What a photo's file is now (after it changed on disk: Reload).
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SetContent {
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id: PhotoId,
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width: u32,
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height: u32,
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file_size: u64,
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#[serde(default)]
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content_hash: Option<String>,
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/// Why the file can only be shown from its embedded preview (see [`Photo::preview_only`]);
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/// `None` = its raw data decodes (or it isn't a raw).
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#[serde(default, skip_serializing_if = "Option::is_none")]
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preview_only: Option<String>,
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},
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/// The name shown for a colour label (`None` = its colour's name).
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SetLabelName {
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label: ColorLabel,
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name: Option<String>,
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},
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/// Several ops as one step (undo applies the inverses in reverse).
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Batch {
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ops: Vec<Op>,
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},
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}
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#[derive(Clone, Debug, Default, PartialEq, Serialize, Deserialize)]
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pub struct Catalog {
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photos: BTreeMap<PhotoId, Arc<Photo>>,
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albums: BTreeMap<AlbumId, Album>,
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next_photo: u64,
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next_album: u64,
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#[serde(default, skip_serializing_if = "BTreeMap::is_empty")]
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stacks: BTreeMap<StackId, Stack>,
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#[serde(default)]
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next_stack: u64,
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/// Custom colour label names.
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#[serde(default, skip_serializing_if = "BTreeMap::is_empty")]
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label_names: BTreeMap<ColorLabel, String>,
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/// Increments on every applied op.
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#[serde(skip)]
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pub revision: u64,
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}
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impl Catalog {
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pub fn new() -> Catalog {
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Catalog { next_photo: 1, next_album: 1, next_stack: 1, ..Default::default() }
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}
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// ---- ids
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pub fn alloc_photo_id(&mut self) -> PhotoId {
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let id = PhotoId(self.next_photo.max(1));
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self.next_photo = id.0 + 1;
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id
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}
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pub fn alloc_album_id(&mut self) -> AlbumId {
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let id = AlbumId(self.next_album.max(1));
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self.next_album = id.0 + 1;
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id
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}
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pub fn alloc_stack_id(&mut self) -> StackId {
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let id = StackId(self.next_stack.max(1));
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self.next_stack = id.0 + 1;
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id
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}
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// ---- reads
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pub fn photo(&self, id: PhotoId) -> Option<&Arc<Photo>> {
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self.photos.get(&id)
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}
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pub fn photos(&self) -> impl Iterator<Item = &Arc<Photo>> {
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self.photos.values()
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}
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pub fn len(&self) -> usize {
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self.photos.len()
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}
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pub fn is_empty(&self) -> bool {
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self.photos.is_empty()
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}
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pub fn album(&self, id: AlbumId) -> Option<&Album> {
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self.albums.get(&id)
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}
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pub fn albums(&self) -> impl Iterator<Item = &Album> {
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self.albums.values()
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}
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/// The Quick Collection, once something was added to it.
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pub fn quick_collection(&self) -> Option<AlbumId> {
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self.albums.values().find(|a| a.quick).map(|a| a.id)
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}
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/// Albums (regular and smart) that contain the photo.
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pub fn albums_of(&self, id: PhotoId) -> Vec<AlbumId> {
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let Some(p) = self.photos.get(&id) else { return Vec::new() };
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self.albums.values().filter(|a| self.album_contains(a.id, p)).map(|a| a.id).collect()
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}
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/// Whether album `id` contains `p` (a smart album evaluates its rules; deleted photos are in
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/// no smart album).
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pub fn album_contains(&self, id: AlbumId, p: &Photo) -> bool {
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match self.albums.get(&id) {
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Some(Album { smart: Some(rules), .. }) => !p.deleted && rules.matches(p, self),
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Some(a) => a.photos.contains(&p.id),
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None => false,
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}
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}
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/// The photos of an album: the stored list, or a smart album's current matches (id order).
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pub fn album_photos(&self, id: AlbumId) -> Vec<PhotoId> {
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match self.albums.get(&id) {
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Some(Album { smart: Some(_), .. }) => self.photos.values().filter(|p| self.album_contains(id, p)).map(|p| p.id).collect(),
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Some(a) => a.photos.clone(),
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None => Vec::new(),
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}
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}
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/// Number of photos shown for an album in the sources list (excludes deleted photos).
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pub fn album_count(&self, id: AlbumId) -> usize {
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match self.albums.get(&id) {
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// counted in place: no id list is built just for its length
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Some(Album { smart: Some(_), .. }) => self.photos.values().filter(|p| self.album_contains(id, p)).count(),
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Some(a) => a.photos.iter().filter(|p| self.photos.get(p).is_some_and(|p| !p.deleted)).count(),
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None => 0,
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}
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}
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/// Smart-album rules must not reference another smart album (no recursion) or deleted photos.
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fn validate_rules(&self, rules: &Filter) -> Result<()> {
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if rules.deleted {
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return Err(CatalogError::Invalid("smart album rules can't select deleted photos".into()));
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}
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if let Some(a) = rules.album
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&& self.albums.get(&a).is_some_and(Album::is_smart)
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{
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return Err(CatalogError::Invalid("smart album rules can't reference another smart album".into()));
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}
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Ok(())
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}
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/// The name of a colour label: its custom name, else the colour (`Red`).
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pub fn label_name(&self, l: ColorLabel) -> String {
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self.label_names.get(&l).cloned().unwrap_or_else(|| format!("{l:?}"))
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}
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/// The custom name of a colour label, if any.
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pub fn custom_label_name(&self, l: ColorLabel) -> Option<&str> {
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self.label_names.get(&l).map(String::as_str)
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}
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/// The label a name stands for: a custom name first, then a colour's own name (any case).
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pub fn label_from_name(&self, name: &str) -> Option<ColorLabel> {
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let name = name.trim();
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self.label_names.iter().find(|(_, n)| n.trim().eq_ignore_ascii_case(name)).map(|(l, _)| *l).or_else(|| ColorLabel::parse(name))
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}
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// ---- writes
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fn photo_mut(&mut self, id: PhotoId) -> Result<&mut Photo> {
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self.photos.get_mut(&id).map(Arc::make_mut).ok_or(CatalogError::NoPhoto(id))
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}
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fn album_mut(&mut self, id: AlbumId) -> Result<&mut Album> {
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self.albums.get_mut(&id).ok_or(CatalogError::NoAlbum(id))
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}
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/// Apply an op; returns its inverse. On error nothing changes.
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pub fn apply(&mut self, op: Op) -> Result<Op> {
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let inv = self.apply_inner(op)?;
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self.revision += 1;
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Ok(inv)
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}
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fn apply_inner(&mut self, op: Op) -> Result<Op> {
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Ok(match op {
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Op::AddPhoto { photo } => {
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if self.photos.contains_key(&photo.id) {
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return Err(CatalogError::Invalid(format!("photo {:?} exists", photo.id)));
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}
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let id = photo.id;
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self.next_photo = self.next_photo.max(id.0 + 1);
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self.photos.insert(id, Arc::new(*photo));
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Op::RemovePhoto { id }
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}
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Op::RemovePhoto { id } => {
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let p = self.photos.remove(&id).ok_or(CatalogError::NoPhoto(id))?;
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// album membership is restored by the batch the engine builds (see `delete_permanently`)
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Op::AddPhoto { photo: Box::new((*p).clone()) }
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}
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Op::SetRating { id, rating } => {
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if rating > 5 {
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return Err(CatalogError::Invalid("rating must be 0..=5".into()));
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}
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let p = self.photo_mut(id)?;
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let old = std::mem::replace(&mut p.rating, rating);
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Op::SetRating { id, rating: old }
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}
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Op::SetFlag { id, flag } => {
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let p = self.photo_mut(id)?;
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Op::SetFlag { id, flag: std::mem::replace(&mut p.flag, flag) }
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}
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Op::SetLabel { id, label } => {
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let p = self.photo_mut(id)?;
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Op::SetLabel { id, label: std::mem::replace(&mut p.label, label) }
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}
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Op::SetDevelop { id, settings, label, edited } => {
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let p = self.photo_mut(id)?;
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let old = std::mem::replace(&mut p.develop, settings);
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let old_edit = std::mem::replace(&mut p.edited, edited);
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Op::SetDevelop { id, settings: old, label, edited: old_edit }
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}
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Op::SetMeta { id, meta } => {
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let p = self.photo_mut(id)?;
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Op::SetMeta { id, meta: Box::new(std::mem::replace(&mut p.meta, *meta)) }
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}
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Op::SetDeleted { id, deleted } => {
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let p = self.photo_mut(id)?;
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Op::SetDeleted { id, deleted: std::mem::replace(&mut p.deleted, deleted) }
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}
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Op::SetLocal { id, local } => {
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let p = self.photo_mut(id)?;
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Op::SetLocal { id, local: std::mem::replace(&mut p.local, local) }
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}
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Op::SetVersions { id, versions } => {
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let p = self.photo_mut(id)?;
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Op::SetVersions { id, versions: std::mem::replace(&mut p.versions, versions) }
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}
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Op::SetHistory { id, history } => {
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let p = self.photo_mut(id)?;
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Op::SetHistory { id, history: std::mem::replace(&mut p.history, history) }
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}
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Op::PushHistory { id, step } => {
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let p = self.photo_mut(id)?;
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let old = p.history.clone();
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p.history.push(step);
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if p.history.len() > HISTORY_LIMIT {
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let n = p.history.len() - HISTORY_LIMIT;
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p.history.drain(..n);
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}
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Op::SetHistory { id, history: old }
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}
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Op::AddAlbum { album } => {
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if self.albums.contains_key(&album.id) {
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return Err(CatalogError::Invalid(format!("album {:?} exists", album.id)));
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}
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if let Some(parent) = album.parent
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&& !self.albums.get(&parent).is_some_and(|a| a.folder)
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{
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return Err(CatalogError::Invalid("parent must be an existing folder".into()));
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}
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if let Some(rules) = &album.smart {
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if album.folder || !album.photos.is_empty() {
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return Err(CatalogError::Invalid("a smart album holds rules, not photos".into()));
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}
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self.validate_rules(rules)?;
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}
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let id = album.id;
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self.next_album = self.next_album.max(id.0 + 1);
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self.albums.insert(id, album);
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Op::RemoveAlbum { id }
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}
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Op::RemoveAlbum { id } => {
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if self.albums.values().any(|a| a.parent == Some(id)) {
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return Err(CatalogError::Invalid("folder is not empty".into()));
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}
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let a = self.albums.remove(&id).ok_or(CatalogError::NoAlbum(id))?;
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Op::AddAlbum { album: a }
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}
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Op::RenameAlbum { id, name } => {
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let a = self.album_mut(id)?;
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Op::RenameAlbum { id, name: std::mem::replace(&mut a.name, name) }
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}
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Op::MoveAlbum { id, parent } => {
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if let Some(p) = parent {
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if p == id || !self.albums.get(&p).is_some_and(|a| a.folder) {
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return Err(CatalogError::Invalid("parent must be another folder".into()));
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}
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// no cycles
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let mut cur = Some(p);
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while let Some(c) = cur {
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if c == id {
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return Err(CatalogError::Invalid("cannot move a folder into itself".into()));
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}
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cur = self.albums.get(&c).and_then(|a| a.parent);
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}
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}
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let a = self.album_mut(id)?;
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Op::MoveAlbum { id, parent: std::mem::replace(&mut a.parent, parent) }
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}
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Op::SetAlbumPhotos { id, photos } => {
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let a = self.album_mut(id)?;
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if (a.folder || a.smart.is_some()) && !photos.is_empty() {
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return Err(CatalogError::Invalid(
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if a.folder { "folders can't hold photos" } else { "smart albums update automatically" }.into(),
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));
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}
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Op::SetAlbumPhotos { id, photos: std::mem::replace(&mut a.photos, photos) }
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}
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Op::SetAlbumCover { id, cover } => {
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let a = self.album_mut(id)?;
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Op::SetAlbumCover { id, cover: std::mem::replace(&mut a.cover, cover) }
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}
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Op::SetAlbumRules { id, rules } => {
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self.validate_rules(&rules)?;
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let a = self.album_mut(id)?;
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let Some(old) = a.smart.as_mut() else {
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return Err(CatalogError::Invalid("not a smart album".into()));
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};
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Op::SetAlbumRules { id, rules: std::mem::replace(old, rules) }
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}
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Op::AddStack { stack } => {
|
|
if self.stacks.contains_key(&stack.id) {
|
|
return Err(CatalogError::Invalid(format!("stack {:?} exists", stack.id)));
|
|
}
|
|
self.validate_stack(stack.id, &stack.photos)?;
|
|
let id = stack.id;
|
|
self.next_stack = self.next_stack.max(id.0 + 1);
|
|
self.stacks.insert(id, stack);
|
|
Op::RemoveStack { id }
|
|
}
|
|
Op::RemoveStack { id } => {
|
|
let s = self.stacks.remove(&id).ok_or(CatalogError::NoStack(id))?;
|
|
Op::AddStack { stack: s }
|
|
}
|
|
Op::SetStack { id, photos, collapsed } => {
|
|
if !self.stacks.contains_key(&id) {
|
|
return Err(CatalogError::NoStack(id));
|
|
}
|
|
self.validate_stack(id, &photos)?;
|
|
let s = self.stacks.get_mut(&id).ok_or(CatalogError::NoStack(id))?;
|
|
let old = Op::SetStack { id, photos: std::mem::replace(&mut s.photos, photos), collapsed: s.collapsed };
|
|
s.collapsed = collapsed;
|
|
old
|
|
}
|
|
Op::SetAnalysis { id, analysis } => {
|
|
let p = self.photo_mut(id)?;
|
|
Op::SetAnalysis { id, analysis: std::mem::replace(&mut p.analysis, analysis) }
|
|
}
|
|
Op::SetCaptured { id, captured } => {
|
|
if let Some(c) = &captured
|
|
&& stacks::iso_seconds(c).is_none()
|
|
{
|
|
return Err(CatalogError::Invalid(format!("not a date: {c}")));
|
|
}
|
|
let p = self.photo_mut(id)?;
|
|
Op::SetCaptured { id, captured: std::mem::replace(&mut p.captured, captured) }
|
|
}
|
|
Op::Relink { id, file_name, source, format } => {
|
|
let p = self.photo_mut(id)?;
|
|
let old_name = std::mem::replace(&mut p.file_name, file_name);
|
|
let old_format = format.map(|f| std::mem::replace(&mut p.format, f));
|
|
Op::Relink { id, file_name: old_name, source: std::mem::replace(&mut p.source, source), format: old_format }
|
|
}
|
|
Op::SetContent { id, width, height, file_size, content_hash, preview_only } => {
|
|
let p = self.photo_mut(id)?;
|
|
Op::SetContent {
|
|
id,
|
|
width: std::mem::replace(&mut p.width, width),
|
|
height: std::mem::replace(&mut p.height, height),
|
|
file_size: std::mem::replace(&mut p.file_size, file_size),
|
|
content_hash: std::mem::replace(&mut p.content_hash, content_hash),
|
|
preview_only: std::mem::replace(&mut p.preview_only, preview_only),
|
|
}
|
|
}
|
|
Op::SetFile { id, file_name, source } => {
|
|
if file_name.trim().is_empty() {
|
|
return Err(CatalogError::Invalid("empty file name".into()));
|
|
}
|
|
let p = self.photo_mut(id)?;
|
|
let old_name = std::mem::replace(&mut p.file_name, file_name);
|
|
Op::SetFile { id, file_name: old_name, source: std::mem::replace(&mut p.source, source) }
|
|
}
|
|
Op::SetLabelName { label, name } => {
|
|
let name = name.map(|n| n.trim().to_string()).filter(|n| !n.is_empty());
|
|
let old = match name {
|
|
Some(n) => self.label_names.insert(label, n),
|
|
None => self.label_names.remove(&label),
|
|
};
|
|
Op::SetLabelName { label, name: old }
|
|
}
|
|
Op::Batch { ops } => {
|
|
let mut inverses = Vec::with_capacity(ops.len());
|
|
for op in ops {
|
|
match self.apply_inner(op) {
|
|
Ok(inv) => inverses.push(inv),
|
|
Err(e) => {
|
|
// roll back what was applied
|
|
for inv in inverses.into_iter().rev() {
|
|
let _ = self.apply_inner(inv);
|
|
}
|
|
return Err(e);
|
|
}
|
|
}
|
|
}
|
|
inverses.reverse();
|
|
Op::Batch { ops: inverses }
|
|
}
|
|
})
|
|
}
|
|
|
|
/// Ops that remove a photo permanently including album and stack memberships (one undoable
|
|
/// batch).
|
|
pub fn delete_permanently_ops(&self, id: PhotoId) -> Op {
|
|
let mut ops: Vec<Op> = self
|
|
.albums
|
|
.values()
|
|
.filter(|a| a.photos.contains(&id))
|
|
.map(|a| Op::SetAlbumPhotos { id: a.id, photos: a.photos.iter().copied().filter(|p| *p != id).collect() })
|
|
.collect();
|
|
ops.extend(self.remove_from_stacks_ops(&[id]));
|
|
ops.push(Op::RemovePhoto { id });
|
|
Op::Batch { ops }
|
|
}
|
|
|
|
// ---- persistence
|
|
|
|
/// Full snapshot as JSON.
|
|
pub fn to_snapshot(&self) -> String {
|
|
serde_json::to_string(self).unwrap_or_default()
|
|
}
|
|
|
|
pub fn from_snapshot(s: &str) -> Result<Catalog> {
|
|
serde_json::from_str(s).map_err(|e| CatalogError::Corrupt(e.to_string()))
|
|
}
|
|
|
|
/// Replay an op log (JSON lines) on top of `self`. A torn final line (crash mid-write) is ignored.
|
|
pub fn replay(&mut self, log: &str) -> Result<usize> {
|
|
let lines: Vec<&str> = log.lines().filter(|l| !l.trim().is_empty()).collect();
|
|
let mut n = 0;
|
|
for (i, line) in lines.iter().enumerate() {
|
|
match serde_json::from_str::<Op>(line) {
|
|
Ok(op) => {
|
|
self.apply(op)?;
|
|
n += 1;
|
|
}
|
|
Err(e) if i + 1 == lines.len() => {
|
|
let _ = e;
|
|
break;
|
|
}
|
|
Err(e) => return Err(CatalogError::Corrupt(format!("log line {}: {e}", i + 1))),
|
|
}
|
|
}
|
|
Ok(n)
|
|
}
|
|
|
|
pub fn op_to_log_line(op: &Op) -> String {
|
|
let mut s = serde_json::to_string(op).unwrap_or_default();
|
|
s.push('\n');
|
|
s
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests;
|
|
#[cfg(test)]
|
|
mod tests_background;
|
|
#[cfg(test)]
|
|
mod tests_journal;
|