package repostatus

import (
	"errors"
	"strings"
	"time"

	"go.wit.com/lib/gui/shell"
	"go.wit.com/lib/protobuf/gitpb"
	"go.wit.com/log"
)

func (rs *RepoStatus) GetCurrentBranchName() string {
	return rs.currentBranch.String()
}

func (rs *RepoStatus) GetCurrentBranchVersion() string {
	return rs.currentVersion.String()
}

/*
func (rs *RepoStatus) LastGitPull() (time.Time, error) {
	return rs.mtime(".git/FETCH_HEAD")
}
*/

func (rs *RepoStatus) Age() time.Duration {
	var t *Tag
	t = rs.NewestTag()

	if t != nil {
		log.Log(REPO, "newest tag:", t.date.String(), t.tag.String(), t.Name())
		return t.Age()
	}

	const gitLayout = "Mon Jan 2 15:04:05 2006 -0700"
	const madeuptime = "Mon Jun 3 15:04:05 2013 -0700"
	tagTime, _ := time.Parse(gitLayout, madeuptime)
	return time.Since(tagTime)
}

var ErrorMissingGitConfig error = errors.New("missing .git/config")
var ErrorGitPullOnLocal error = errors.New("git pull on local only branch")

// remove this everything
func (rs *RepoStatus) Path() string {
	return rs.realPath.String()
}

/*
func (rs *RepoStatus) checkoutBranch(level string, branch string) {
	if rs.CheckDirty() {
		log.Log(REPO, "checkoutBranch() checkDirty() == true for repo", rs.realPath.String(), "looking for branch:", branch)
		return
	}
	out := run(rs.realPath.String(), "git", "checkout "+branch)
	log.Log(REPO, rs.realPath.String(), "git checkout "+branch, "returned", out)

	realname := rs.GetCurrentBranchName()
	realversion := rs.GetCurrentBranchVersion()
	log.Log(REPO, rs.realPath.String(), "realname =", realname, "realversion =", realversion)

	switch level {
	case "master":
		rs.mainBranchVersion.SetValue(realversion)
	case "devel":
		rs.develBranchVersion.SetValue(realversion)
	case "user":
		rs.userBranchVersion.SetValue(realversion)
	default:
	}
}
*/

func (rs *RepoStatus) GitState() string {
	return rs.gitState.String()
}

func (rs *RepoStatus) CheckGitState() string {
	rs.setState()
	return rs.gitState.String()
}

func (rs *RepoStatus) GetStatus() string {
	return rs.gitState.String()
}

func (rs *RepoStatus) setState() {
	pb := rs.pb
	rs.changed = false
	if pb.CheckDirty() {
		log.Log(REPO, "CheckDirty() true")
		rs.gitState.SetText("dirty")
		return
	}
	if pb.GetUserVersion() != pb.GetDevelVersion() {
		rs.gitState.SetText("merge to devel")
		return
	}
	if pb.GetDevelVersion() != pb.GetMasterVersion() {
		rs.gitState.SetText("merge to main")
		return
	}
	if pb.GetLastTag() != pb.GetMasterVersion() {
		rs.gitState.SetText("unchanged")
		return
	}

	if pb.CheckBranches() {
		log.Log(REPO, "Branches are Perfect")
		rs.gitState.SetText("PERFECT")
		return
	}
	log.Log(REPO, "FIND THIS IN REPO STATUS Branches are not Perfect")
	log.Log(REPO, "FIND THIS IN REPO STATUS Branches are not Perfect")
	log.Log(REPO, "FIND THIS IN REPO STATUS Branches are not Perfect")
	log.Log(REPO, "FIND THIS IN REPO STATUS Branches are not Perfect")
	rs.gitState.SetText("unknown branches")
}

func (rs *RepoStatus) GetLastTagVersion() string {
	return rs.lasttag.String()
}

func (rs *RepoStatus) displayCurrentBranchName() string {
	out := rs.pb.GetCurrentBranchName()
	rs.currentBranch.SetValue(out)
	return out
}

// stores the current branch name
func (rs *RepoStatus) checkCurrentBranchName() string {
	currentname := rs.currentBranch.String()
	out := rs.pb.GetCurrentBranchName()
	if currentname == out {
		// nothing changed
		return currentname
	}
	rs.currentBranch.SetValue(out)
	if currentname == "" {
		return out // don't note if there was nothing before
	}
	rs.NoteChange("current branch has changed from " + currentname + " to " + out)
	return out
}

func (rs *RepoStatus) gitDescribeByHash(hash string) (string, error) {
	if hash == "" {
		return "", errors.New("hash was blank")
	}
	r := shell.PathRunLog(rs.realPath.String(), []string{"git", "describe", "--tags", "--always", hash}, INFO)
	out := strings.Join(r.Stdout, "\n")
	if r.Error != nil {
		log.Warn("not in a git repo or bad hash?", r.Error, rs.Path())
		return out, r.Error
	}
	return out, r.Error
}

func (rs *RepoStatus) gitDescribeByName(name string) (string, error) {
	name = strings.TrimSpace(name)

	if name == "" {
		// git will return the current tag
		r := shell.PathRunLog(rs.Path(), []string{"git", "describe", "--tags", "--always"}, INFO)
		output := strings.Join(r.Stdout, "\n")
		if r.Error != nil {
			log.Warn("gitDescribeByName() not in a git repo?", r.Error, rs.Path())
		}
		return strings.TrimSpace(output), r.Error
	}
	if !rs.LocalTagExists(name) {
		// tag does not exist
		return "", errors.New("gitDescribeByName() git fatal: Not a valid object name")
	}
	cmd := []string{"git", "describe", "--tags", "--always", name}
	r := shell.PathRunLog(rs.Path(), cmd, INFO)
	output := strings.Join(r.Stdout, "\n")
	if r.Error != nil {
		log.Warn("cmd =", cmd)
		log.Warn("err =", r.Error)
		log.Warn("not in a git repo or bad tag?", rs.Path())
	}

	return strings.TrimSpace(output), r.Error
}

// todo: don't run git every time?
func (rs *RepoStatus) checkCurrentBranchVersion() string {
	out := rs.pb.GetCurrentVersion()
	rs.currentVersion.SetValue(out)
	return out
}

// this should get the most recent tag
func (rs *RepoStatus) setLastTagVersion() {
	name := rs.pb.GetLastTagVersion()
	rs.lasttag.SetText(name)
	return
}

func (rs *RepoStatus) populateTags() {
	tmp := rs.realPath.String() + "/.git/refs/tags"
	log.Log(REPO, "populateTags() path =", tmp)
	for _, tag := range gitpb.ListFiles(tmp) {
		if rs.tags[tag] == "" {
			log.Log(REPO, "populateTags() Adding new tag", tag)
			// rs.tagsDrop.AddText(tag)
			rs.tags[tag] = "origin"
		}
	}
	// rs.tagsDrop.SetText(rs.lasttagrev)
}

/*
func (rs *RepoStatus) getBranches() []string {
	var all []string
	var heads []string
	var remotes []string
	heads = gitpb.ListFiles(rs.realPath.String() + "/.git/refs/heads")
	remotes = gitpb.ListFiles(rs.realPath.String() + "/.git/refs/remotes")

	all = heads

	all = append(all, remotes...)

	for _, branch := range all {
		log.Log(REPO, "getBranches()", branch)
	}
	return all
}
*/

// returns quickly based on the last time it was checked
func (rs *RepoStatus) IsDirty() bool {
	return rs.pb.IsDirty()
}

/*
// return the list of dirty files (but ignores go.mod & go.sum)
func (rs *RepoStatus) DirtyList() []string {
	var all []string
	for _, line := range strings.Split(rs.dirtyList, "\n") {
		line = strings.TrimSpace(line)
		parts := strings.Split(line, " ")
		if len(parts) != 2 {
			continue
		}
		if parts[1] == "go.mod" {
			continue
		}
		if parts[1] == "go.sum" {
			continue
		}
		all = append(all, parts[1])
	}
	return all
}
*/

func (rs *RepoStatus) CheckDirty() bool {
	if rs.pb.IsDirty() {
		rs.dirtyLabel.SetValue("dirty")
		return true
	}
	rs.dirtyLabel.SetValue("")
	return false
}

/*
func (rs *RepoStatus) CheckoutBranch(bname string) bool {
	if rs.CheckDirty() {
		log.Log(REPO, rs.realPath.String(), "is dirty")
		log.Info(bname, "is dirty", rs.Path())
		return false
	}
	if !rs.TagExists(bname) {
		// tag does not exist
		log.Log(REPO, "repo does not have branch", bname, rs.Path())
		return false
	}
	cName := rs.GetCurrentBranchName()
	if cName == bname {
		// already on branch
		return true
	}
	cmd := []string{"git", "checkout", bname}
	r := rs.Run(cmd)
	if r.Error != nil {
		log.Log(REPO, "git checkout error:", r.Error)
		return false
	}
	rs.checkCurrentBranchName()
	rs.checkCurrentBranchVersion()
	return true
}
*/