Initial lookbook implementation

Pinterest-style visual bookmarking app with:
- URL metadata extraction (OG/Twitter meta, oEmbed fallback)
- Image caching in Postgres with 480px thumbnails
- Multi-tag filtering with Ctrl/Cmd for OR mode
- Fuzzy tag suggestions and inline tag editing
- Browser console auth() with first-use password setup
- Brutalist UI with Commit Mono font and Pico CSS
- Light/dark mode via browser preference

cmd/server/main.go

@@ -0,0 +1,168 @@
+package main
+
+import (
+	"context"
+	"database/sql"
+	"flag"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+
+	"git.soup.land/soup/lookbook/internal/handlers"
+	"git.soup.land/soup/lookbook/internal/middleware"
+	"git.soup.land/soup/lookbook/internal/migrations"
+	"git.soup.land/soup/lookbook/internal/static"
+	"git.soup.land/soup/sxgo/ssr"
+)
+
+const defaultAddr = ":8080"
+
+func main() {
+	migrate := flag.Bool("migrate", false, "run database migrations and exit")
+	rollback := flag.Bool("rollback", false, "roll back migrations and exit (one step by default)")
+	rollbackTarget := flag.Int64("to", -1, "target version for rollback when using -rollback")
+	dbURLFlag := flag.String("db-url", "", "database connection URL")
+	flag.Parse()
+
+	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
+		Level: slog.LevelInfo,
+	}))
+
+	dbURL := *dbURLFlag
+	if dbURL == "" {
+		dbURL = os.Getenv("DATABASE_URL")
+	}
+	if dbURL == "" {
+		dbURL = migrations.DefaultURL
+	}
+
+	switch {
+	case *migrate && *rollback:
+		logger.Error("choose either -migrate or -rollback, not both")
+		os.Exit(1)
+	case *migrate:
+		if err := migrations.Up(context.Background(), dbURL, logger); err != nil {
+			logger.Error("migration failed", slog.Any("err", err))
+			os.Exit(1)
+		}
+		return
+	case *rollback:
+		if err := migrations.Down(context.Background(), dbURL, *rollbackTarget, logger); err != nil {
+			logger.Error("rollback failed", slog.Any("err", err))
+			os.Exit(1)
+		}
+		return
+	}
+
+	// Check for subcommand
+	args := flag.Args()
+	if len(args) < 1 {
+		printUsage()
+		os.Exit(1)
+	}
+
+	mode := args[0]
+	switch mode {
+	case "web":
+		runWebServer(dbURL, logger)
+	default:
+		logger.Error("unknown mode", slog.String("mode", mode))
+		printUsage()
+		os.Exit(1)
+	}
+}
+
+func printUsage() {
+	fmt.Fprintln(os.Stderr, "Usage:")
+	fmt.Fprintln(os.Stderr, "  lookbook web         - Run web server")
+	fmt.Fprintln(os.Stderr, "")
+	fmt.Fprintln(os.Stderr, "Flags:")
+	fmt.Fprintln(os.Stderr, "  -migrate           Run database migrations")
+	fmt.Fprintln(os.Stderr, "  -rollback          Roll back migrations")
+	fmt.Fprintln(os.Stderr, "  -to <version>      Target version for rollback")
+	fmt.Fprintln(os.Stderr, "  -db-url <url>      Database connection URL")
+}
+
+func runWebServer(dbURL string, logger *slog.Logger) {
+	pending, err := migrations.CheckPending(context.Background(), dbURL, logger)
+	if err != nil {
+		logger.Warn("could not check migration status", slog.Any("err", err))
+	} else if pending > 0 {
+		logger.Warn("database has pending migrations",
+			slog.Int("pending", pending),
+			slog.String("hint", "run 'make migrate' to apply"))
+	}
+
+	db, err := sql.Open("pgx", dbURL)
+	if err != nil {
+		logger.Error("failed to open database", slog.Any("err", err))
+		os.Exit(1)
+	}
+	defer db.Close()
+
+	if err := db.Ping(); err != nil {
+		logger.Error("failed to ping database", slog.Any("err", err))
+		os.Exit(1)
+	}
+
+	rc := &handlers.RequestContext{
+		DB:        db,
+		Logger:    logger,
+		TmplCache: ssr.NewTmplCache(handlers.TemplateFuncs),
+	}
+	router := handlers.NewRouter(rc)
+
+	router.Handle("GET /", handlers.HandleGetGallery)
+	router.Handle("POST /items", handlers.HandlePostItem)
+	router.Handle("GET /items/{id}", handlers.HandleGetItem)
+	router.Handle("POST /items/{id}/tags", handlers.HandlePostItemTags)
+	router.Handle("POST /items/{id}/delete", handlers.HandleDeleteItem)
+	router.Handle("POST /items/{id}/refresh", handlers.HandleRefreshItem)
+	router.Handle("GET /images/{id}", handlers.HandleGetImage)
+	router.Handle("POST /auth/login", handlers.HandlePostAuthLogin)
+	router.Handle("POST /auth/logout", handlers.HandlePostAuthLogout)
+	router.Handle("GET /auth/status", handlers.HandleGetAuthStatus)
+	router.HandleStd("GET /static/{version}/", static.Handler())
+
+	addr := defaultAddr
+	if envAddr := os.Getenv("ADDR"); envAddr != "" {
+		addr = envAddr
+	}
+
+	server := &http.Server{
+		Addr:              addr,
+		Handler:           middleware.Logging(logger)(router),
+		ReadHeaderTimeout: 5 * time.Second,
+	}
+
+	go func() {
+		logger.Info("listening", slog.String("addr", addr))
+		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			logger.Error("http server error", slog.Any("err", err))
+			os.Exit(1)
+		}
+	}()
+
+	waitForShutdown(server, logger)
+}
+
+func waitForShutdown(server *http.Server, logger *slog.Logger) {
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, os.Interrupt, syscall.SIGTERM)
+
+	<-quit
+	logger.Info("shutting down")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	if err := server.Shutdown(ctx); err != nil {
+		logger.Error("graceful shutdown failed", slog.Any("err", err))
+	}
+}