1 files changed, 191 insertions, 0 deletions
diff --git a/cmd/bun/main.go b/cmd/bun/main.go
new file mode 100644
index 0000000..62c9441
--- /dev/null
+++ b/cmd/bun/main.go
@@ -0,0 +1,191 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"strings"
+
+	"github.com/uptrace/bun/migrate"
+	"sh.org.ru/cmd/bun/migrations"
+	"sh.org.ru/pkg/config"
+	"sh.org.ru/pkg/db"
+
+	"github.com/urfave/cli/v2"
+)
+
+func main() {
+	app := &cli.App{
+		Name: "bun",
+		Commands: []*cli.Command{
+			newDBCommand(migrations.Migrations),
+		},
+	}
+	if err := app.Run(os.Args); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func newDBCommand(migrations *migrate.Migrations) *cli.Command {
+	return &cli.Command{
+		Name:  "db",
+		Usage: "manage database migrations",
+		Subcommands: []*cli.Command{
+			{
+				Name:  "init",
+				Usage: "create migration tables",
+				Flags: []cli.Flag{
+					&cli.StringFlag{
+						Name:  "config",
+						Value: "./config/dev.yaml",
+						Usage: "config",
+					},
+				},
+				Action: func(c *cli.Context) error {
+					migrator, err := newMigrator(c, migrations)
+					if err != nil {
+						return err
+					}
+					log.Println("init")
+					return migrator.Init(c.Context)
+				},
+			},
+			{
+				Name:  "migrate",
+				Usage: "migrate database",
+				Flags: []cli.Flag{
+					&cli.StringFlag{
+						Name:  "config",
+						Value: "./config/dev.yaml",
+						Usage: "config",
+					},
+				},
+				Action: func(c *cli.Context) error {
+					migrator, err := newMigrator(c, migrations)
+					if err != nil {
+						return err
+					}
+
+					group, err := migrator.Migrate(c.Context)
+					if err != nil {
+						return err
+					}
+
+					if group.ID == 0 {
+						fmt.Printf("there are no new migrations to run\n")
+						return nil
+					}
+
+					fmt.Printf("migrated to %s\n", group)
+					return nil
+				},
+			},
+			{
+				Name:  "rollback",
+				Usage: "rollback the last migration group",
+				Flags: []cli.Flag{
+					&cli.StringFlag{
+						Name:  "config",
+						Value: "./config/dev.yaml",
+						Usage: "config",
+					},
+				},
+				Action: func(c *cli.Context) error {
+					migrator, err := newMigrator(c, migrations)
+					if err != nil {
+						return err
+					}
+
+					group, err := migrator.Rollback(c.Context)
+					if err != nil {
+						return err
+					}
+
+					if group.ID == 0 {
+						fmt.Printf("there are no groups to roll back\n")
+						return nil
+					}
+
+					fmt.Printf("rolled back %s\n", group)
+					return nil
+				},
+			},
+			{
+				Name:  "lock",
+				Usage: "lock migrations",
+				Flags: []cli.Flag{
+					&cli.StringFlag{
+						Name:  "config",
+						Value: "./config/dev.yaml",
+						Usage: "config",
+					},
+				},
+				Action: func(c *cli.Context) error {
+					migrator, err := newMigrator(c, migrations)
+					if err != nil {
+						return err
+					}
+
+					return migrator.Lock(c.Context)
+				},
+			},
+			{
+				Name:  "unlock",
+				Usage: "unlock migrations",
+				Flags: []cli.Flag{
+					&cli.StringFlag{
+						Name:  "config",
+						Value: "./config/dev.yaml",
+						Usage: "config",
+					},
+				},
+				Action: func(c *cli.Context) error {
+					migrator, err := newMigrator(c, migrations)
+					if err != nil {
+						return err
+					}
+
+					return migrator.Unlock(c.Context)
+				},
+			},
+			{
+				Name:  "create",
+				Usage: "create migration",
+				Flags: []cli.Flag{
+					&cli.StringFlag{
+						Name:  "config",
+						Value: "./config/dev.yaml",
+						Usage: "config",
+					},
+				},
+				Action: func(c *cli.Context) error {
+					migrator, err := newMigrator(c, migrations)
+					if err != nil {
+						return err
+					}
+
+					name := strings.Join(c.Args().Slice(), "_")
+					mf, err := migrator.CreateGoMigration(c.Context, name)
+					if err != nil {
+						return err
+					}
+					fmt.Printf("created migration %s (%s)\n", mf.Name, mf.Path)
+
+					return nil
+				},
+			},
+		},
+	}
+}
+
+func newMigrator(c *cli.Context, migrations *migrate.Migrations) (*migrate.Migrator, error) {
+	configFile := c.String("config")
+	cfg, err := config.New(configFile)
+	if err != nil {
+		return nil, err
+	}
+	db := db.New(cfg.DB)
+
+	migrator := migrate.NewMigrator(db, migrations)
+	return migrator, nil
+}