package migratecmd

import (
	"database/sql"
	"fmt"
	"strconv"

	"gitea.auvem.com/go-toolkit/migrate"
	"github.com/pressly/goose/v3"
	"github.com/spf13/cobra"
)

// MigrateCmd returns the main migrate command.
func MigrateCmd(sqlo *sql.DB) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "migrate",
		Short: "Migrate the database",
		Run: func(cmd *cobra.Command, args []string) {
			cmd.Help()
		},
	}

	cmd.AddCommand(AllSubcommands(sqlo)...)

	return cmd
}

// AllSubcommands returns all subcommands of the migrate command.
func AllSubcommands(sqlo *sql.DB) []*cobra.Command {
	return []*cobra.Command{
		MigrateStatusCmd(sqlo),
		MigrateCreateCmd(sqlo),
		MigrateUpCmd(sqlo),
		MigrateUpToCmd(sqlo),
		MigrateDownCmd(sqlo),
		MigrateDownToCmd(sqlo),
		MigrateRedoCmd(sqlo),
	}
}

// MigrateStatusCmd returns a command to get database migration status.
func MigrateStatusCmd(sqlo *sql.DB) *cobra.Command {
	return &cobra.Command{
		Use:   "status",
		Short: "Get database migration status",
		Run: func(cmd *cobra.Command, args []string) {
			if err := goose.Status(sqlo, migrate.MigrationsConfig().BasePath); err != nil {
				fmt.Printf("Error: Couldn't get migration status: %v\n", err)
				return
			}
		},
	}
}

// MigrateCreateCmd returns a command to create a new migration.
func MigrateCreateCmd(sqlo *sql.DB) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "create [NAME] [TYPE]",
		Short: "Create a new migration",
		Args:  cobra.ExactArgs(2),
		Run: func(cmd *cobra.Command, args []string) {
			sequential, err := cmd.Flags().GetBool("sequential")
			if err != nil {
				fmt.Printf("Error: Failed to get 'sequential' flag: %v\n", err)
				return
			}

			if sequential {
				goose.SetSequential(sequential)
			}

			if err := goose.Create(sqlo, "migrations", args[0], args[1]); err != nil {
				fmt.Printf("Error: Couldn't create migration: %v\n", err)
				return
			}
		},
	}

	cmd.Flags().BoolP("sequential", "s", false, "Create a sequential migration")
	return cmd
}

// MigrateUpCmd returns a command to apply all available database migrations.
func MigrateUpCmd(sqlo *sql.DB) *cobra.Command {
	return &cobra.Command{
		Use:   "up",
		Short: "Apply all available database migrations",
		Run: func(cmd *cobra.Command, args []string) {
			if err := goose.Up(sqlo, migrate.MigrationsConfig().BasePath); err != nil {
				fmt.Printf("Error: Couldn't apply migrations: %v\n", err)
				return
			}
		},
	}
}

// MigrateUpToCmd returns a command to apply all available database migrations up to a specific version.
func MigrateUpToCmd(sqlo *sql.DB) *cobra.Command {
	return &cobra.Command{
		Use:   "up-to [VERSION]",
		Short: "Apply all available database migrations up to a specific version",
		Args:  cobra.ExactArgs(1),
		Run: func(cmd *cobra.Command, args []string) {
			version, err := strconv.ParseInt(args[0], 10, 0)
			if err != nil {
				fmt.Printf("Error: Couldn't parse version: %v\n", err)
				return
			}

			if err := goose.UpTo(sqlo, migrate.MigrationsConfig().BasePath, version); err != nil {
				fmt.Printf("Error: Couldn't apply migrations to target version %d: %v\n", version, err)
				return
			}
		},
	}
}

// MigrateDownCmd returns a command to rollback the most recent database migration.
func MigrateDownCmd(sqlo *sql.DB) *cobra.Command {
	return &cobra.Command{
		Use:   "down",
		Short: "Rollback the most recent database migration",
		Run: func(cmd *cobra.Command, args []string) {
			if err := goose.Down(sqlo, migrate.MigrationsConfig().BasePath); err != nil {
				fmt.Printf("Error: Couldn't rollback migration: %v\n", err)
				return
			}
		},
	}
}

// MigrateDownToCmd returns a command to rollback all database migrations down to a specific version.
func MigrateDownToCmd(sqlo *sql.DB) *cobra.Command {
	return &cobra.Command{
		Use:   "down-to [VERSION]",
		Short: "Rollback all database migrations down to a specific version",
		Args:  cobra.ExactArgs(1),
		Run: func(cmd *cobra.Command, args []string) {
			version, err := strconv.ParseInt(args[0], 10, 0)
			if err != nil {
				fmt.Printf("Error: Couldn't parse version: %v\n", err)
				return
			}

			if err := goose.DownTo(sqlo, migrate.MigrationsConfig().BasePath, version); err != nil {
				fmt.Printf("Error: Couldn't rollback migrations to target version %d: %v\n", version, err)
				return
			}
		},
	}
}

// MigrateRedoCmd returns a command to rollback the most recent database migration and reapply it.
func MigrateRedoCmd(sqlo *sql.DB) *cobra.Command {
	return &cobra.Command{
		Use:   "redo",
		Short: "Rollback the most recent database migration and reapply it",
		Run: func(cmd *cobra.Command, args []string) {
			if err := goose.Redo(sqlo, migrate.MigrationsConfig().BasePath); err != nil {
				fmt.Printf("Error: Couldn't redo migration: %v\n", err)
				return
			}
		},
	}
}