package app

import (
	"fmt"
	"path/filepath"

	"coopcloud.tech/abra/cli/internal"
	"coopcloud.tech/abra/pkg/autocomplete"
	gitPkg "coopcloud.tech/abra/pkg/git"
	"coopcloud.tech/abra/pkg/log"
	"github.com/spf13/cobra"
)

var AppDiffCommand = &cobra.Command{
	Use:     "diff <app> [flags]",
	Aliases: []string{"df"},
	Short:   "Show diff of app env changes",
	Long:    `This command requires /usr/bin/git.`,
	Example: "  abra app diff 1312.net",
	Args:    cobra.ExactArgs(1),
	ValidArgsFunction: func(
		cmd *cobra.Command,
		args []string,
		toComplete string) ([]string, cobra.ShellCompDirective) {
		return autocomplete.AppNameComplete()
	},
	Run: func(cmd *cobra.Command, args []string) {
		app := internal.ValidateApp(args)

		gitDir := gitPkg.FindDir(app.Path)
		if gitDir == "" {
			log.Fatal(fmt.Errorf("no git repo found for %s", app.Name))
		}

		fpath := app.Path
		realPath, err := filepath.EvalSymlinks(fpath)
		if err != nil {
			log.Fatalf("unable to app env: broken symlink: %s", fpath)
		}
		fpath = realPath

		diff, err := gitPkg.DiffUnstaged(gitDir, fpath)
		if err != nil {
			log.Fatalf("unable to diff %s: %s", app.Name, err)
		}

		if diff != "" {
			fmt.Print(diff)
		}
	},
}