package projects

import (
	"crypto/sha1"
	"fmt"
	"strings"
	"time"

	"github.com/go-git/go-git/v5"
)

// Git project metadata
// Do not use Project.ID directly (remotes may conflict), use Project.GetID()
type Project struct {
	ID                int
	Description       string
	SSHURLToRepo      string
	HTTPURLToRepo     string
	WebURL            string
	Name              string
	NameWithNamespace string
	Path              string
	PathWithNamespace string
	AvatarURL         string
	LastActivityAt    time.Time
	Readme            string
	Remote            string
	Owner             string
	Languages         *ProjectLanguages
	gitRepo           *git.Repository
}

type ProjectLanguages []*ProjectLanguage

type ProjectLanguage struct {
	Name       string
	Percentage float32
}

func NewProjectLanguages() *ProjectLanguages {
	var pLangs ProjectLanguages = make([]*ProjectLanguage, 0)
	return &pLangs
}

func (pl *ProjectLanguages) AddLanguage(lang *ProjectLanguage) {
	*pl = append(*pl, lang)
}

// Gets a unique ID using a short-sha of the http repo
// along with the numerical ID of the project.
// Uses SSH URL and then Remote if previous is empty
func (p *Project) GetID() string {
	return fmt.Sprintf("%s||%d", p.GetRemoteSha(), p.ID)
}

func MakeID(remote string, projectID int) string {
	return fmt.Sprintf("%s||%d", GetRemoteSha(remote), projectID)
}

func (p *Project) GetRemoteSha() string {
	remote := p.Remote
	if remote == "" && p.HTTPURLToRepo != "" {
		remote = p.HTTPURLToRepo
	} else if remote == "" && p.WebURL != "" {
		remote = p.WebURL
	}

	return GetRemoteSha(remote)
}

func GetRemoteSha(remote string) string {
	return fmt.Sprintf("%x", sha1.Sum([]byte(remote)))[:12]
}

func (p *Project) String() string {
	var projectString string
	if p != nil {
		projectString = fmt.Sprintf("%s (%s)", p.Path, p.PathWithNamespace)
	}
	return projectString
}

func (p *Project) GetLanguage() *ProjectLanguage {
	if p.Languages == nil {
		return nil
	}

	var lang *ProjectLanguage
	var maxPcnt float32
	for _, p := range *p.Languages {
		if p.Percentage > maxPcnt {
			lang = p
		}
		maxPcnt = p.Percentage
	}

	return lang
}

func (p *Project) SanitizedPath() string {
	return strings.Trim(p.PathWithNamespace, " '\"%<>|`")
}

func (p *Project) SetRepo(r *git.Repository) {
	p.gitRepo = r
}

func (p *Project) GetRepo() *git.Repository {
	return p.gitRepo
}