migrate

var (
	// WithGlobalUniqueID sets the universal ids options to the migration.
	// If this option is enabled, ent migration will allocate a 1<<32 range
	// for the ids of each entity (table).
	// Note that this option cannot be applied on tables that already exist.
	WithGlobalUniqueID = schema.WithGlobalUniqueID
	// WithDropColumn sets the drop column option to the migration.
	// If this option is enabled, ent migration will drop old columns
	// that were used for both fields and edges. This defaults to false.
	WithDropColumn = schema.WithDropColumn
	// WithDropIndex sets the drop index option to the migration.
	// If this option is enabled, ent migration will drop old indexes
	// that were defined in the schema. This defaults to false.
	// Note that unique constraints are defined using `UNIQUE INDEX`,
	// and therefore, it's recommended to enable this option to get more
	// flexibility in the schema changes.
	WithDropIndex = schema.WithDropIndex
	// WithForeignKeys enables creating foreign-key in schema DDL. This defaults to true.
	WithForeignKeys = schema.WithForeignKeys
)

var (
	// ResourcesColumns holds the columns for the "resources" table.
	ResourcesColumns = []*schema.Column{
		{Name: "id", Type: field.TypeString, Unique: true},
		{Name: "name", Type: field.TypeString},
		{Name: "description", Type: field.TypeString},
		{Name: "created_at", Type: field.TypeTime},
	}
	// ResourcesTable holds the schema information for the "resources" table.
	ResourcesTable = &schema.Table{
		Name:       "resources",
		Columns:    ResourcesColumns,
		PrimaryKey: []*schema.Column{ResourcesColumns[0]},
	}
	// StoragesColumns holds the columns for the "storages" table.
	StoragesColumns = []*schema.Column{
		{Name: "id", Type: field.TypeInt, Increment: true},
		{Name: "directory", Type: field.TypeString},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "version_storage", Type: field.TypeInt, Unique: true, Nullable: true},
	}
	// StoragesTable holds the schema information for the "storages" table.
	StoragesTable = &schema.Table{
		Name:       "storages",
		Columns:    StoragesColumns,
		PrimaryKey: []*schema.Column{StoragesColumns[0]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:     "storages_versions_storage",
				Columns:    []*schema.Column{StoragesColumns[3]},
				RefColumns: []*schema.Column{VersionsColumns[0]},
				OnDelete:   schema.SetNull,
			},
		},
	}
	// VersionsColumns holds the columns for the "versions" table.
	VersionsColumns = []*schema.Column{
		{Name: "id", Type: field.TypeInt, Increment: true},
		{Name: "name", Type: field.TypeString},
		{Name: "number", Type: field.TypeUint64},
		{Name: "file_hashes", Type: field.TypeJSON, Nullable: true},
		{Name: "created_at", Type: field.TypeTime},
		{Name: "resource_versions", Type: field.TypeString, Nullable: true},
	}
	// VersionsTable holds the schema information for the "versions" table.
	VersionsTable = &schema.Table{
		Name:       "versions",
		Columns:    VersionsColumns,
		PrimaryKey: []*schema.Column{VersionsColumns[0]},
		ForeignKeys: []*schema.ForeignKey{
			{
				Symbol:     "versions_resources_versions",
				Columns:    []*schema.Column{VersionsColumns[5]},
				RefColumns: []*schema.Column{ResourcesColumns[0]},
				OnDelete:   schema.SetNull,
			},
		},
	}
	// Tables holds all the tables in the schema.
	Tables = []*schema.Table{
		ResourcesTable,
		StoragesTable,
		VersionsTable,
	}
)