Первый прототип с основными возможностями

ent/migrate/migrate.go

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+// Code generated by ent, DO NOT EDIT.
+
+package migrate
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql/schema"
+)
+
+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
+)
+
+// Schema is the API for creating, migrating and dropping a schema.
+type Schema struct {
+	drv dialect.Driver
+}
+
+// NewSchema creates a new schema client.
+func NewSchema(drv dialect.Driver) *Schema { return &Schema{drv: drv} }
+
+// Create creates all schema resources.
+func (s *Schema) Create(ctx context.Context, opts ...schema.MigrateOption) error {
+	return Create(ctx, s, Tables, opts...)
+}
+
+// Create creates all table resources using the given schema driver.
+func Create(ctx context.Context, s *Schema, tables []*schema.Table, opts ...schema.MigrateOption) error {
+	migrate, err := schema.NewMigrate(s.drv, opts...)
+	if err != nil {
+		return fmt.Errorf("ent/migrate: %w", err)
+	}
+	return migrate.Create(ctx, tables...)
+}
+
+// WriteTo writes the schema changes to w instead of running them against the database.
+//
+//	if err := client.Schema.WriteTo(context.Background(), os.Stdout); err != nil {
+//		log.Fatal(err)
+//	}
+func (s *Schema) WriteTo(ctx context.Context, w io.Writer, opts ...schema.MigrateOption) error {
+	return Create(ctx, &Schema{drv: &schema.WriteDriver{Writer: w, Driver: s.drv}}, Tables, opts...)
+}

ent/migrate/schema.go

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+// Code generated by ent, DO NOT EDIT.
+
+package migrate
+
+import (
+	"entgo.io/ent/dialect/sql/schema"
+	"entgo.io/ent/schema/field"
+)
+
+var (
+	// LinksColumns holds the columns for the "links" table.
+	LinksColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeUUID, Unique: true},
+		{Name: "key", Type: field.TypeString, Unique: true},
+		{Name: "original_url", Type: field.TypeString},
+	}
+	// LinksTable holds the schema information for the "links" table.
+	LinksTable = &schema.Table{
+		Name:       "links",
+		Columns:    LinksColumns,
+		PrimaryKey: []*schema.Column{LinksColumns[0]},
+		Indexes: []*schema.Index{
+			{
+				Name:    "link_key",
+				Unique:  true,
+				Columns: []*schema.Column{LinksColumns[1]},
+			},
+		},
+	}
+	// UsersColumns holds the columns for the "users" table.
+	UsersColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeUUID, Unique: true},
+		{Name: "telegram_id", Type: field.TypeInt64, Unique: true},
+	}
+	// UsersTable holds the schema information for the "users" table.
+	UsersTable = &schema.Table{
+		Name:       "users",
+		Columns:    UsersColumns,
+		PrimaryKey: []*schema.Column{UsersColumns[0]},
+	}
+	// UserLinksColumns holds the columns for the "user_links" table.
+	UserLinksColumns = []*schema.Column{
+		{Name: "user_id", Type: field.TypeUUID},
+		{Name: "link_id", Type: field.TypeUUID},
+	}
+	// UserLinksTable holds the schema information for the "user_links" table.
+	UserLinksTable = &schema.Table{
+		Name:       "user_links",
+		Columns:    UserLinksColumns,
+		PrimaryKey: []*schema.Column{UserLinksColumns[0], UserLinksColumns[1]},
+		ForeignKeys: []*schema.ForeignKey{
+			{
+				Symbol:     "user_links_user_id",
+				Columns:    []*schema.Column{UserLinksColumns[0]},
+				RefColumns: []*schema.Column{UsersColumns[0]},
+				OnDelete:   schema.Cascade,
+			},
+			{
+				Symbol:     "user_links_link_id",
+				Columns:    []*schema.Column{UserLinksColumns[1]},
+				RefColumns: []*schema.Column{LinksColumns[0]},
+				OnDelete:   schema.Cascade,
+			},
+		},
+	}
+	// Tables holds all the tables in the schema.
+	Tables = []*schema.Table{
+		LinksTable,
+		UsersTable,
+		UserLinksTable,
+	}
+)
+
+func init() {
+	UserLinksTable.ForeignKeys[0].RefTable = UsersTable
+	UserLinksTable.ForeignKeys[1].RefTable = LinksTable
+}