package cmd

import (
	"ariga.io/atlas/sql/sqltool"
	"context"
	"entgo.io/ent/dialect"
	"entgo.io/ent/dialect/sql/schema"
	"fmt"
	entmigrate "framework_v2/internal/ent/migrate"
	_ "github.com/jackc/pgx/v5/stdlib"
	"github.com/pressly/goose/v3"
	"github.com/spf13/cobra"
	"log"
	"os"
)

var dsnCommand = &cobra.Command{
	Use:   "dsn",
	Short: "生成 DSN",
	Long:  "生成 DSN",
	Run: func(cmd *cobra.Command, args []string) {
		fmt.Print(config.DB.Driver + "://" + config.DB.DSN)
	},
}

var migrateCommand = &cobra.Command{
	Use:   "migrate [command]",
	Short: "goose 迁移，用法 <command>",
	Long:  "适用于生产环境的数据库迁移",
	Run: func(cmd *cobra.Command, args []string) {
		if len(args) == 0 {
			_ = cmd.Help()
			return
		}
		RunMigrate(args)
	},
}

var createMigrateCommand = &cobra.Command{
	Use:   "create-migrate",
	Short: "新建迁移",
	Long:  "从 internal/ent 中新建迁移。在这之前，需要运行 go generate ./internal/ent",
	Run: func(cmd *cobra.Command, args []string) {
		generateMigration()
	},
}

// RunMigrate 为数据库函数
func RunMigrate(args []string) {
	db, err := goose.OpenDBWithDriver("postgres", config.DB.DSN2)
	if err != nil {
		log.Fatalf("goose: failed to open DB: %v\n", err)
	}

	defer func() {
		if err := db.Close(); err != nil {
			log.Fatalf("goose: failed to close DB: %v\n", err)
		}
	}()

	command := args[0]

	var arguments []string
	if len(args) > 3 {
		arguments = append(arguments, args[3:]...)
	}

	if err := goose.RunContext(context.Background(), command, db, "internal/migrations", arguments...); err != nil {
		log.Fatalf("goose %v: %v", command, err)
	}
}

func generateMigration() {
	ctx := context.Background()
	dir, err := sqltool.NewGooseDir("internal/migrations")
	if err != nil {
		log.Fatalf("failed creating atlas migration directory: %v", err)
	}
	// Migrate diff options.
	opts := []schema.MigrateOption{
		schema.WithDir(dir),                          // provide migration directory
		schema.WithMigrationMode(schema.ModeInspect), // provide migration mode
		schema.WithDialect(dialect.Postgres),         // Ent dialect to use

	}
	if len(os.Args) != 3 {
		log.Fatalln("migration name is required. Use: 'go run -mod=mod internal/ent/migrate/main.go <name>'")
	}

	err = entmigrate.NamedDiff(ctx, config.DB.Driver+"://"+config.DB.DSN, os.Args[2], opts...)
	if err != nil {
		log.Fatalf("failed generating migration file: %v", err)
	}
}