优化

internal/database/schema_migration.go

@@ -20,6 +20,9 @@ func AutoMigrate(db *gorm.DB) error {
 	if err := ensureLibraryRootsCompatibility(db); err != nil {
 		return err
 	}
+	if err := ensureEmbyMountsCompatibility(db); err != nil {
+		return err
+	}
 	if isSQLite(db) {
 		return ensureMediaSearchIndex(db)
 	}
@@ -77,3 +80,25 @@ func ensurePerformanceIndexes(db *gorm.DB) error {
 	}
 	return nil
 }
+
+func ensureEmbyMountsCompatibility(db *gorm.DB) error {
+	if !db.Migrator().HasTable(&model.EmbyMount{}) {
+		return nil
+	}
+	if !db.Migrator().HasColumn(&model.EmbyMount{}, "sort_order") {
+		if err := db.Migrator().AddColumn(&model.EmbyMount{}, "sort_order"); err != nil {
+			return err
+		}
+	}
+	// 针对已有数据：如果存在多个 sort_order=0/NULL 的记录，按创建时间顺序赋予稳定递增的序号
+	var zeroCount int64
+	if err := db.Model(&model.EmbyMount{}).Where("sort_order = 0 OR sort_order IS NULL").Count(&zeroCount).Error; err == nil && zeroCount > 1 {
+		var mounts []model.EmbyMount
+		if err := db.Order("created_at asc, id asc").Find(&mounts).Error; err == nil {
+			for i, m := range mounts {
+				_ = db.Exec("UPDATE emby_mounts SET sort_order = ? WHERE id = ?", i, m.ID).Error
+			}
+		}
+	}
+	return nil
+}

internal/database/schema_migration_emby_mount_test.go

@@ -0,0 +1,62 @@
+package database
+
+import (
+	"testing"
+	"time"
+
+	"github.com/glebarez/sqlite"
+	"gorm.io/gorm"
+
+	"github.com/ShukeBta/MMTL/internal/model"
+)
+
+func TestEnsureEmbyMountsCompatibility(t *testing.T) {
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Create a table without sort_order simulating an older schema
+	if err := db.Exec(`CREATE TABLE emby_mounts (
+		id varchar(36) PRIMARY KEY,
+		created_at datetime,
+		updated_at datetime,
+		deleted_at datetime,
+		account_id text,
+		remote_view_id text,
+		remote_view_name text,
+		collection_type text,
+		name text,
+		proxy_play numeric DEFAULT false,
+		enabled numeric DEFAULT true
+	)`).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	// Insert older rows
+	now := time.Now()
+	_ = db.Exec("INSERT INTO emby_mounts (id, name, created_at) VALUES (?, ?, ?)", "m1", "Mount 1", now.Add(-2*time.Hour)).Error
+	_ = db.Exec("INSERT INTO emby_mounts (id, name, created_at) VALUES (?, ?, ?)", "m2", "Mount 2", now.Add(-1*time.Hour)).Error
+
+	// Run compatibility migration
+	if err := ensureEmbyMountsCompatibility(db); err != nil {
+		t.Fatalf("ensureEmbyMountsCompatibility failed: %v", err)
+	}
+
+	// Verify column sort_order exists and values are initialized sequentially
+	if !db.Migrator().HasColumn(&model.EmbyMount{}, "sort_order") {
+		t.Fatal("expected sort_order column to be added")
+	}
+
+	var m1, m2 model.EmbyMount
+	if err := db.Where("id = ?", "m1").First(&m1).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Where("id = ?", "m2").First(&m2).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	if m1.SortOrder != 0 || m2.SortOrder != 1 {
+		t.Fatalf("unexpected sort orders: m1=%d, m2=%d", m1.SortOrder, m2.SortOrder)
+	}
+}