dtoro
6b8c7abc20
Six-item frontend performance pass on the SvelteKit app.
P1 — Move per-folder photo counts to a new sidecar endpoint and defer
the fetch to requestIdleCallback. The old client-side path fired one
/photos?count=1000 per folder from the browser (≈1 MB JSON × N folders)
on every cold sidebar mount; the new POST /api/sidecar/folders/counts
fans out over loopback with bounded concurrency and returns a single
{path: count} payload of a few KB.
P2 — Bound the visibleRange scroll-scan around the previous visible
band instead of sweeping every shell from index 0 on each scroll-rAF.
Falls back to a full sweep on cache miss (filter reset, programmatic
jump) so behaviour is unchanged at the edges.
P3 — Adaptive thumbnail size + srcset. PhotoTile now picks the smallest
PhotoPrism tile_* variant (100/224/500) that covers the user's grid
preset at the current DPR. Adds decoding="async".
P4 — Lift the selection check above the {#each} loop. Mostly readability
— SvelteSet.has() is already per-key reactive — but keeps the hot loop
body terse.
P5 — Split dedupedAll / photos derivations so filter-store mutations
(search-as-you-type, section toggles) don't re-walk every loaded page;
only the cheap folder-scope filter re-runs.
P6 — Dynamic-import PreviewOverlay on first preview.uid !== null and
cache the loaded module; closing the overlay leaves the component
mounted with its internal {#if} collapsing the DOM.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
115 lines
3.2 KiB
Go
115 lines
3.2 KiB
Go
// mule-sidecar — Go service for endpoints PhotoPrism does not expose.
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//
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// Ports the Node prototype (server.mjs) to the stack the merge plan calls
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// out: Go + Gin + GORM + MariaDB. Same wire contract as the prototype so
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// the SvelteKit web client doesn't need to change.
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//
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// Auth model is unchanged: the caller's X-Auth-Token is the only authority.
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// requireSession validates it against PhotoPrism's /api/v1/photos before
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// any destructive op runs.
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package main
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import (
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"context"
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"errors"
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"log/slog"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/gin-gonic/gin"
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)
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func main() {
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slog.SetDefault(slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
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Level: slog.LevelInfo,
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})))
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cfg, err := loadConfig()
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if err != nil {
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slog.Error("config", "err", err)
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os.Exit(1)
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}
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db, err := openDB(cfg.DSN)
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if err != nil {
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slog.Error("db open", "err", err)
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os.Exit(1)
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}
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pp := newPPClient(cfg.PhotoprismBaseURL)
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gin.SetMode(gin.ReleaseMode)
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r := gin.New()
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// Keep `%2F` literal in path params so callers can pass URL-encoded
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// nested folder paths (e.g. `foo%2Fbar`) without the router splitting
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// them into separate segments. Handlers decode via url.PathUnescape.
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r.UseRawPath = true
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r.UnescapePathValues = false
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r.Use(gin.Recovery())
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// Health probe — unauthenticated so a process supervisor can call it
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// without needing PhotoPrism to be reachable.
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r.GET("/api/sidecar/healthz", func(c *gin.Context) {
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c.JSON(http.StatusOK, gin.H{
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"ok": true,
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"originalsRoot": cfg.OriginalsRoot,
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})
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})
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// Every other endpoint runs behind the session gate. Mounting them
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// under one group keeps the middleware wiring obvious.
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auth := r.Group("/api/sidecar", requireSession(pp))
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{
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auth.GET("/photos/marks", handleMarksAll(db))
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auth.GET("/photos/:uid/marks", handleMarkGet(db))
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auth.PUT("/photos/:uid/marks", handleMarkPut(db))
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auth.POST("/photos/marks/bulk", handleMarkBulk(db))
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auth.POST("/files/:uid/rename", handleRename(cfg, pp))
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auth.POST("/folders", handleFolderCreate(cfg, pp))
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auth.POST("/folders/counts", handleFolderCounts(pp))
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auth.POST("/folders/:rel/rename", handleFolderRename(cfg, pp))
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auth.DELETE("/folders/:rel", handleFolderDelete(cfg, pp))
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auth.POST("/albums/:uid/convert", handleHeapConvert(cfg, pp))
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auth.GET("/duplicates/scan", handleDupScan(cfg, pp))
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auth.POST("/duplicates/archive", handleDupArchive(cfg, pp))
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}
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addr := cfg.ListenAddr + ":" + itoa(cfg.Port)
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srv := &http.Server{
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Addr: addr,
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Handler: r,
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ReadHeaderTimeout: 5 * time.Second,
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}
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// Graceful shutdown so an in-flight duplicate scan or heap convert
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// gets a chance to finish (or at least flush logs) on SIGTERM.
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idleClosed := make(chan struct{})
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go func() {
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sigs := make(chan os.Signal, 1)
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signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
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<-sigs
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slog.Info("shutdown signal received")
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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_ = srv.Shutdown(ctx)
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close(idleClosed)
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}()
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slog.Info("mule-sidecar listening",
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"addr", "http://"+addr,
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"originals", cfg.OriginalsRoot,
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)
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if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
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slog.Error("listen", "err", err)
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os.Exit(1)
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}
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<-idleClosed
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}
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