package git

import (
	"errors"

	"coopcloud.tech/abra/pkg/log"
	"github.com/go-git/go-git/v5"
)

// Pull pulls the latest changes in.
func Pull(repoDir string, dryRun bool) error {
	if dryRun {
		log.Debugf("dry run: no git changes pulled in %s", repoDir)
		return nil
	}

	repo, err := git.PlainOpen(repoDir)
	if err != nil {
		return err
	}

	opts := &git.PullOptions{
		RemoteName: "origin", // NOTE(d1): what could go wrong 🤡
	}

	worktree, err := repo.Worktree()
	if err != nil {
		return err
	}

	if err := worktree.Pull(opts); err != nil && !errors.Is(err, git.NoErrAlreadyUpToDate) {
		return err
	} else if err != nil && errors.Is(err, git.NoErrAlreadyUpToDate) {
		log.Debugf("skipping pulling changes at %s", repoDir)
		return nil
	}

	log.Debugf("git changes pulled in at %s", repoDir)

	return nil
}