package cmd

import (
	"errors"
	"fmt"
	"git-roast/internal/roast"
	"os"

	"github.com/spf13/cobra"
)

var requestCmd = &cobra.Command{
	Use:     "request",
	Short:   "Request a merge from one branch into another.",
	Example: "git roast req from feat1 into main",
	RunE: func(cmd *cobra.Command, args []string) error {
		roast, err := roast.Open()
		if err != nil {
			_, _ = fmt.Fprintln(os.Stderr, err.Error())
			os.Exit(1)
			return nil
		}

		var from string
		var into string
		switch len(args) {
		case 2:
			if args[0] == "into" {
				if current, ok := roast.CurrentBranchName(); ok {
					from = current
				}
			} else {
				from = args[0]
			}
			into = args[1]
		case 3:
			if args[1] == "into" {
				from = args[0]
				into = args[2]
			} else if args[1] == "from" {
				into = args[0]
				from = args[2]
			}
		case 4:
			if args[0] == "from" && args[2] == "into" {
				from = args[1]
				into = args[3]
			} else if args[0] == "into" && args[2] == "from" {
				into = args[1]
				from = args[3]
			}
		}
		if len(from) == 0 || len(into) == 0 {
			return errors.New("invalid `from` and `into` branch names")
		}

		if err := roast.Request(from, into); err != nil {
			_, _ = fmt.Fprintln(os.Stderr, err.Error())
			os.Exit(1)
			return nil
		}

		return nil
	},
	Aliases: []string{"req"},
}

func init() {
	rootCmd.AddCommand(requestCmd)
}