package gitpb

import (
	"path/filepath"
	"strings"

	"go.wit.com/log"
)

func (repo *Repo) DevelHash() string {
	brname := repo.GetDevelBranchName()
	refname := "refs/heads/" + brname
	all := repo.Tags.All()
	for all.Scan() {
		tag := all.Next()
		// log.Info("repo tag", tag.GetHash(), tag.GetRefname())
		if tag.GetRefname() == refname {
			return tag.GetHash()
		}
	}
	return ""
}

func (repo *Repo) GetLocalHash(brname string) string {
	refname := "refs/heads/" + brname
	all := repo.Tags.All()
	for all.Scan() {
		tag := all.Next()
		// log.Info("repo tag", tag.GetHash(), tag.GetRefname())
		if tag.GetRefname() == refname {
			return strings.TrimSpace(tag.GetHash())
		}
	}
	return ""
}

func (repo *Repo) GetRemoteHash(brname string) string {
	refname := "refs/remotes/origin/" + brname
	all := repo.Tags.All()
	for all.Scan() {
		tag := all.Next()
		// log.Info("repo tag", tag.GetHash(), tag.GetRefname())
		if tag.GetRefname() == refname {
			return strings.TrimSpace(tag.GetHash())
		}
	}
	return ""
}

// this is the correct way. uses 'git show-ref'
func (repo *Repo) IsBranchRemote(brname string) bool {
	if repo.Tags == nil {
		return false
	}

	brname = "refs/remotes/origin/" + brname
	ref := repo.Tags.FindByRefname(brname)
	if ref == nil {
		// log.Info("did not found refname!!!!!!!!", brname)
		return false
	}
	// log.Info("found refname!!!!!!!!")
	return true
}

// this is the correct way. uses 'git show-ref'
func (repo *Repo) IsDevelRemote() bool {
	if repo.Tags == nil {
		return false
	}

	devname := repo.GetDevelBranchName()
	refname := "refs/remotes/origin/" + devname
	ref := repo.Tags.FindByRefname(refname)
	if ref == nil {
		// log.Info("did not found refname!!!!!!!!", refname)
		return false
	}
	// log.Info("found refname!!!!!!!!")
	return true
}

// find a branch namm
// will find "master" or "devel"
// will also find "v0.1.1"
// or will find "patches-from-foo"
// will return *any* match on any git branch because it doesn't
// matter much here yet
// eventually this will be worked out by forge in some future code that hasn't been made yet
func (repo *Repo) IsBranch(findname string) bool {
	loop := repo.Tags.All()
	for loop.Scan() {
		t := loop.Next()
		// log.Info("LocalTagExists() tag:", t.Refname)

		tagname := t.Refname
		if strings.HasPrefix(tagname, "refs/remotes") {
			continue
		}
		path, filename := filepath.Split(tagname)
		log.Log(INFO, "gitpb.IsBranch() tag:", path, filename, "from", repo.GetGoPath())
		if filename == findname {
			log.Log(INFO, "gitpb.IsBranch() found tag:", path, filename, "from", repo.GetGoPath())
			return true
		}
	}
	log.Log(INFO, "did not find tag:", findname, "in", repo.GetGoPath())
	return false
}

func (repo *Repo) IsLocalBranch(findname string) bool {
	loop := repo.Tags.All()
	for loop.Scan() {
		t := loop.Next()
		if !strings.HasPrefix(t.Refname, "refs/heads") {
			// log.Info("LocalTagExists() skip tag:", t.Refname)
			continue
		}
		// log.Info("LocalTagExists() check tag:", t.Refname)
		path, filename := filepath.Split(t.Refname)
		log.Log(INFO, "gitpb.IsBranch() tag:", path, filename, "from", repo.GetGoPath())
		if filename == findname {
			log.Log(INFO, "gitpb.IsBranch() found tag:", path, filename, "from", repo.GetGoPath())
			return true
		}
	}
	log.Log(INFO, "did not find tag:", findname, "in", repo.GetGoPath())
	return false
}

// finds the newest tag. used for deciding if master needs to be published
func (repo *Repo) FindLastTag() string {
	var newest *GitTag
	all := repo.Tags.All()
	for all.Scan() {
		tag := all.Next()
		if !strings.HasPrefix(tag.GetRefname(), "refs/tags/") {
			continue
		}
		if newest == nil {
			newest = tag
			continue
		}
		cur := newest.Creatordate.AsTime()
		if cur.Before(tag.Creatordate.AsTime()) {
			newest = tag
		}
		// newtag := strings.TrimPrefix(tag.GetRefname(), "refs/tags/")
		// log.Info("repo tag", tag.GetHash(), tag.Creatordate.AsTime(), tag.GetRefname(), newtag)
	}
	if newest == nil {
		return ""
	}
	// log.Info("repo newest tag", newest.GetHash(), newest.Creatordate.AsTime(), newest.GetRefname())
	newtag := strings.TrimPrefix(newest.GetRefname(), "refs/tags/")
	return newtag
}