feat: add Stow prototype iOS app and Gin backend

2026-10-02 21:23:31 +08:00
commit fe72c1ebd2
30 changed files with 3252 additions and 0 deletions
@@ -0,0 +1,91 @@
+package main
+
+import (
+	"context"
+	"database/sql"
+	"log/slog"
+	"os"
+	"os/signal"
+	"path/filepath"
+	"sort"
+	"strings"
+	"syscall"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+)
+
+func main() {
+	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
+	databaseURL := os.Getenv("DATABASE_URL")
+	if databaseURL == "" {
+		logger.Error("DATABASE_URL is required")
+		os.Exit(1)
+	}
+	directory := os.Getenv("MIGRATIONS_DIR")
+	if directory == "" {
+		directory = "migrations"
+	}
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+	db, err := sql.Open("pgx", databaseURL)
+	if err != nil {
+		logger.Error("database open failed", "error", err)
+		os.Exit(1)
+	}
+	defer db.Close()
+	if err := migrate(ctx, db, directory, logger); err != nil {
+		logger.Error("migration failed", "error", err)
+		os.Exit(1)
+	}
+}
+
+func migrate(ctx context.Context, db *sql.DB, directory string, logger *slog.Logger) error {
+	entries, err := os.ReadDir(directory)
+	if err != nil {
+		return err
+	}
+	var names []string
+	for _, entry := range entries {
+		if !entry.IsDir() && strings.HasSuffix(entry.Name(), ".sql") {
+			names = append(names, entry.Name())
+		}
+	}
+	sort.Strings(names)
+	if _, err := db.ExecContext(ctx, `CREATE TABLE IF NOT EXISTS stow_schema_migrations (name TEXT PRIMARY KEY, applied_at TIMESTAMPTZ NOT NULL DEFAULT now())`); err != nil {
+		return err
+	}
+	for _, name := range names {
+		var applied bool
+		if err := db.QueryRowContext(ctx, `SELECT EXISTS (SELECT 1 FROM stow_schema_migrations WHERE name=$1)`, name).Scan(&applied); err != nil {
+			return err
+		}
+		if applied {
+			continue
+		}
+		content, err := os.ReadFile(filepath.Join(directory, name))
+		if err != nil {
+			return err
+		}
+		tx, err := db.BeginTx(ctx, nil)
+		if err != nil {
+			return err
+		}
+		if _, err := tx.ExecContext(ctx, `SELECT pg_advisory_xact_lock(735160)`); err != nil {
+			tx.Rollback()
+			return err
+		}
+		if _, err := tx.ExecContext(ctx, string(content)); err != nil {
+			tx.Rollback()
+			return err
+		}
+		if _, err := tx.ExecContext(ctx, `INSERT INTO stow_schema_migrations (name) VALUES ($1)`, name); err != nil {
+			tx.Rollback()
+			return err
+		}
+		if err := tx.Commit(); err != nil {
+			return err
+		}
+		logger.Info("applied migration", "name", name)
+	}
+	return nil
+}