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path: root/pkg/service/git.go
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package service

import (
	"path"

	"git.gabrielgio.me/cerrado/pkg/config"
	"git.gabrielgio.me/cerrado/pkg/git"
	"github.com/go-git/go-git/v5/plumbing"
	"github.com/go-git/go-git/v5/plumbing/object"
)

type (
	Repository struct {
		Name              string
		Title             string
		LastCommitMessage string
		LastCommitDate    string
	}

	GitService struct {
		configRepo configurationRepository
	}

	configurationRepository interface {
		List() []*config.GitRepositoryConfiguration
		GetByName(name string) *config.GitRepositoryConfiguration
	}
)

// TODO: make it configurable
const timeFormat = "2006.01.02 15:04:05"

func NewGitService(configRepo configurationRepository) *GitService {
	return &GitService{
		configRepo: configRepo,
	}
}

func (g *GitService) ListRepositories() ([]*Repository, error) {
	rs := g.configRepo.List()

	repos := make([]*Repository, len(rs))
	for i, r := range rs {
		repo := git.NewGitRepository(r.Path)
		obj, err := repo.LastCommit()
		if err != nil {
			return nil, err
		}

		baseName := path.Base(r.Path)
		repos[i] = &Repository{
			Name:              baseName,
			Title:             baseName,
			LastCommitMessage: obj.Message,
			LastCommitDate:    obj.Author.When.Format(timeFormat),
		}
	}

	return repos, nil
}

func (g *GitService) ListCommits(name string) ([]*object.Commit, error) {
	// TODO: handle nil
	r := g.configRepo.GetByName(name)

	repo := git.NewGitRepository(r.Path)
	return repo.Commits()
}

func (g *GitService) ListTags(name string) ([]*object.Tag, error) {
	// TODO: handle nil
	r := g.configRepo.GetByName(name)

	repo := git.NewGitRepository(r.Path)
	return repo.Tags()
}

func (g *GitService) ListBranches(name string) ([]*plumbing.Reference, error) {
	// TODO: handle nil
	r := g.configRepo.GetByName(name)

	repo := git.NewGitRepository(r.Path)
	return repo.Branches()
}