package main

import (
	"github.com/spf13/cobra"
	"log"
	"os"
	"strconv"
)

var cli = &cobra.Command{
	Use:   "cobble",
	Short: "Cobble is a simple SQL migration utility.",
}

var up = &cobra.Command{
	Use:   "up",
	Short: "Applies migrations",
	Run: func(cmd *cobra.Command, args []string) {
		dbPort, _ := strconv.Atoi(os.Getenv("DB_PORT"))

		db := NewDatabase(os.Getenv("DB_HOST"), dbPort)
		err := db.Connect(os.Getenv("DB_APP_USER"), os.Getenv("DB_APP_PASSWORD"), os.Getenv("DB_NAME"))

		if err != nil {
			log.Printf("Failed to connect to the database: %s", err)
			os.Exit(1)
		}

		migrationRoot := args[0]
		migrationGraph, _ := NewMigrationGraphFromDirectory(migrationRoot)
		migrationHistory, _ := migrationGraph.GetLinearHistory()
		for _, migration := range migrationHistory {
			log.Printf("%s", migration.Name)
			if err = ApplyMigration(db, migration); err != nil {
				os.Exit(1)
			}
		}
	},
}

func main() {
	cli.AddCommand(up)

	if err := cli.Execute(); err != nil {
		log.Fatal(err)
		os.Exit(1)
	}
}