package repostatus

import (
	"errors"
	"strconv"
	"strings"

	"go.wit.com/log"
	"go.wit.com/widget"
)

// used to block commits on non-user branches
func (rs *RepoStatus) IsUserBranch() bool {
	if rs.GetCurrentBranchName() == rs.GetUserBranchName() {
		return true
	}
	return false
}

func (rs *RepoStatus) DeleteUserBranch(force bool) bool {
	log.Log(REPOWARN, "figure out what to do here")
	return false
}

func (rs *RepoStatus) ResetBranches() bool {
	log.Log(REPOWARN, "figure out what to do here")
	return false
}

func (rs *RepoStatus) FetchMaster() (error, string) {
	// log.Log(REPOWARN, "FetchMaster() start", rs.Name())
	master := rs.GetMasterBranchName()
	return rs.fetchBranchByName(master)
}

func (rs *RepoStatus) FetchDevel() (error, string) {
	devel := rs.GetDevelBranchName()
	return rs.fetchBranchByName(devel)
}

// fetch the branch by name
func (rs *RepoStatus) fetchBranchByName(bname string) (error, string) {
	if rs.GetCurrentBranchName() != rs.GetUserBranchName() {
		return errors.New("not in user branch"), ""
	}
	if rs.gitConfig == nil {
		return errors.New("missing .git/config"), ""
	}
	for name, branch := range rs.gitConfig.branches {
		if name == bname {
			// found the branch!
			log.Log(REPO, "  ", name, "remote:", branch.remote, "merge", branch.merge)
			cmd := []string{"git", "fetch", branch.remote, bname + ":" + bname}
			r := rs.Run(cmd)
			output := strings.Join(r.Stdout, "\n")
			return r.Error, strings.TrimSpace(output)
		}
	}
	return errors.New("branch " + bname + " not found"), ""
}

func (rs *RepoStatus) MergeUserToDevel() bool {
	startbranch := rs.GetCurrentBranchName()
	devel := rs.GetDevelBranchName()
	user := rs.GetUserBranchName()

	log.Info("MergeUserToDevel() checking out", devel, "started on", startbranch, "merge", user)

	var all [][]string
	all = append(all, []string{"git", "checkout", devel})
	all = append(all, []string{"git", "merge", user})
	all = append(all, []string{"git", "push"})

	if rs.DoAll(all) {
		log.Log(WARN, "MergeUserToDevel() failed", rs.Path())
		rs.updateNew()
		return true
	}
	// DoAll failed
	rs.updateNew()
	return false
}

func (rs *RepoStatus) MergeDevelToMaster() bool {
	startbranch := rs.GetCurrentBranchName()
	devel := rs.GetDevelBranchName()
	main := rs.GetMasterBranchName()

	log.Info("MergeDevelToMaster() checking out", main, "started on", startbranch, "merge", devel)

	var all [][]string
	all = append(all, []string{"git", "checkout", main})
	all = append(all, []string{"git", "merge", devel})
	all = append(all, []string{"git", "push"})

	if rs.DoAll(all) {
		log.Log(WARN, "MergeDevelToMaster() failed", rs.Path())
		rs.updateNew()
		return true
	}
	// DoAll failed
	rs.updateNew()
	return false
}

/*
func (rs *RepoStatus) runReleaseVersionB() bool {
	if !rs.generateCmd() {
		log.Warn("something is wrong. fix the errors first")
		return false
	}
	rs.releaseVersion.Disable()
	log.Warn("MAKING A RELEASE AND VERSION")
	if !rs.runGitCommands(true) {
		log.Warn("SOMETHING WENT WRONG")
		rs.UpdateNew()
		rs.Enable()
		return false
	}
	log.Warn("THINGS SEEM OK. runReleaseVersionB worked. Release is finished. restart autotypist()")
	rs.Hide()
	return true
}
*/

func (rs *RepoStatus) runFullAutomation() bool {
	if !rs.MergeUserToDevel() {
		log.Warn("THINGS FAILED returned false")
		return false
	}
	log.Warn("THINGS SEEM OK returned true. can run this again?")
	/*
		log.Warn("develMerge =", rs.develMergeB.String())
		label := "merge devel into " + rs.GetMasterBranchName()
		if label == rs.develMergeB.String() {
			log.Warn("LABELS MATCH", label, rs.develMergeB.String())
			if !rs.RunDevelMergeB() {
				log.Warn("THINGS FAILED returned false")
				return false
			}
		}
		if rs.develMergeB.String() == "ready to release" {
			log.Warn("THINGS SEEM OK ready to release")
			if rs.releaseVersion.String() == "Release!" {
				log.Warn("releaseVersion == 'Release!'. safe to do release version HERE?")
				log.Warn("rs.newversion =", rs.newversion.String())
				log.Warn("rs.targetReleaseVersion =", rs.targetReleaseVersion.String())
				log.Warn("Are these equal?")
				if rs.newversion.String() == rs.targetReleaseVersion.String() {
					log.Warn("THEY ARE EQUAL!")
					rs.runReleaseVersionB()
				} else {
					log.Warn("THEY ARE NOT EQUAL")
				}
			}
		}
	*/
	return true
}

var releaseRevision string = ""

// over ride the computation of this if a release is being created
func (rs *RepoStatus) setRevision(c string) {
	if releaseRevision == "" {
		rs.revision.SetText(c)
	}
	rs.revision.SetText(releaseRevision)
}

func (rs *RepoStatus) SetVersion(a, b, c string, reason string) {
	rs.major.SetText(a)
	rs.minor.SetText(b)
	releaseRevision = c
	rs.setRevision(c)

	rs.targetReleaseVersion.SetText("v" + a + "." + b + "." + c)

	rs.versionMessage.SetLabel(reason)
	rs.versionMessage.SetText(reason)
	// rs.versionMessage.SetValue(reason)
}

func (rs *RepoStatus) IncrementMinorVersion(reason string) {
	lasttag := rs.lasttag.String()
	var major, minor, revision string
	major, minor, revision = splitVersion(lasttag)

	olda, _ := strconv.Atoi(major)
	oldb, _ := strconv.Atoi(minor)
	oldc, _ := strconv.Atoi(revision)

	oldb += 1
	oldc = 0

	newa := strconv.Itoa(olda)
	newb := strconv.Itoa(oldb)
	newc := strconv.Itoa(oldc)

	rs.SetVersion(newa, newb, newc, reason)
}

func (rs *RepoStatus) IncrementRevisionVersion(reason string) {
	lasttag := rs.lasttag.String()
	var major, minor, revision string
	major, minor, revision = splitVersion(lasttag)

	olda, _ := strconv.Atoi(major)
	oldb, _ := strconv.Atoi(minor)
	oldc, _ := strconv.Atoi(revision)

	oldc += 1

	newa := strconv.Itoa(olda)
	newb := strconv.Itoa(oldb)
	newc := strconv.Itoa(oldc)

	rs.SetVersion(newa, newb, newc, reason)
}

func (rs *RepoStatus) setTag() bool {
	lasttag := rs.lasttag.String()
	var major, minor, revision string
	major, minor, revision = splitVersion(lasttag)

	olda, _ := strconv.Atoi(major)
	oldb, _ := strconv.Atoi(minor)
	oldc, _ := strconv.Atoi(revision)

	log.Log(INFO, "current version here", lasttag)
	log.Log(INFO, "current release a,b,c =", major, minor, revision)

	newa, _ := strconv.Atoi(rs.major.String())

	newver := strconv.Itoa(newa)
	if newa < olda {
		log.Warn("new version bad", newver, "vs old version", lasttag, "newa =", newa, "olda =", olda)
		rs.newversion.SetLabel("bad")
		return false
	}
	if newa > olda {
		log.Log(INFO, "new version ok", newver, "vs old version", lasttag)
		rs.minor.SetText("0")
		rs.setRevision("0")
		newver := strconv.Itoa(newa) + ".0.0"
		rs.newversion.SetLabel(newver)
		return true
	}

	newb, _ := strconv.Atoi(rs.minor.String())
	newver = strconv.Itoa(newa) + "." + strconv.Itoa(newb)
	if newb < oldb {
		log.Warn("new version bad", newver, "vs old version", lasttag, "newb =", newb, "oldb =", oldb)
		rs.newversion.SetLabel("bad")
		return false
	}

	if newb > oldb {
		log.Log(INFO, "new version ok", newver, "vs old version", lasttag)
		newver = strconv.Itoa(newa) + "." + strconv.Itoa(newb) + ".0"
		rs.newversion.SetLabel(newver)
		rs.setRevision("0")
		return true
	}

	newc, _ := strconv.Atoi(rs.revision.String())
	newver = strconv.Itoa(newa) + "." + strconv.Itoa(newb) + "." + strconv.Itoa(newc)
	if newc <= oldc {
		log.Warn("new version bad", newver, "vs old version", lasttag)
		rs.newversion.SetLabel("bad")
		return false
	}
	log.Log(INFO, "new version ok", newver, "vs old version", lasttag)
	rs.newversion.SetLabel(newver)
	return true
}

// the newversion field goes through some sanity checking
// to make sure it's greater than the existing tag and
// valid according to golang -- it must be format 'v1.2.3'
func (rs *RepoStatus) GetNewVersionTag() string {
	return rs.newversion.String()
}

func (rs *RepoStatus) incrementRevision() {
	lasttag := rs.lasttag.String()
	var major, minor, revision string
	if rs.targetReleaseVersion.String() == "" {
		major, minor, revision = splitVersion(lasttag)
		log.Warn("Should release version here", lasttag)
		log.Log(INFO, "Should release a,b,c", major, minor, revision)
	} else {
		// this means there is a specific release version trying to be done
		// use the target release version instead
		major, minor, revision = splitVersion(rs.targetReleaseVersion.String())
		log.Warn("Should release version here", lasttag)
		log.Log(INFO, "Should release a,b,c", major, minor, revision)
	}

	a, _ := strconv.Atoi(major)
	b, _ := strconv.Atoi(minor)
	c, _ := strconv.Atoi(revision)

	rs.major.AddText(widget.GetString(a))
	rs.major.AddText(widget.GetString(a + 1))
	rs.major.SetText(widget.GetString(a))

	rs.minor.AddText(widget.GetString(b))
	rs.minor.AddText(widget.GetString(b + 1))
	rs.minor.SetText(widget.GetString(b))

	// rs.c := strconv.Atoi(revision)
	rs.revision.AddText(strconv.Itoa(c + 1))
	rs.revision.AddText(strconv.Itoa(c + 2))
	rs.revision.SetText(strconv.Itoa(c + 1))
	// rs.setRevision(widget.GetString(c + 1))
}

func (rs *RepoStatus) recommend() {
	log.Log(INFO, "Is repo dirty?", rs.dirtyLabel.String())
	log.Log(INFO, "list the known tags")
	rs.DisableEverything()
	rs.populateTags()
	log.Log(INFO, "Does devel == user?", rs.develBranchVersion.String(), rs.userBranchVersion.String())
	if rs.develBranchVersion.String() != rs.userBranchVersion.String() {
		log.Log(INFO, "devel does not equal user")
		log.Log(INFO, "merge or squash?")
		rs.EnableMergeDevel()
		rs.setMergeUserCommands()
		label := "merge user into " + rs.GetDevelBranchName()
		rs.develMergeB.SetLabel(label)
		return
	}
	log.Log(INFO, "Does master == devel? ", rs.GetMasterVersion(), rs.GetDevelVersion())
	if rs.GetMasterVersion() != rs.GetDevelVersion() {
		log.Log(INFO, "master does not equal devel. merge devel into master")
		rs.EnableMergeDevel()
		rs.setMergeDevelCommands()
		label := "merge devel into " + rs.GetMasterBranchName()
		rs.develMergeB.SetLabel(label)
		return
	}
	if rs.lasttag.String() != rs.GetMasterVersion() {
		log.Log(INFO, "master does not equal last tag")
		rs.incrementRevision()
		rs.EnableSelectTag()
		rs.setTag()
		return
	}
	log.Log(INFO, "Is repo pushed upstream? git.wit.org or github?")
}

func (rs *RepoStatus) generateCmd() bool {
	// the length of 24 is arbitrary, but should be short
	// they should be things like perhaps, major release names
	// or something the users might see.
	// aka: "Topsy", "Picasso", "Buzz", etc

	if !rs.setTag() {
		log.Log(INFO, "tag sucked. fix your tag version")
		rs.versionMessage.SetLabel("tag message (bad version)")
		rs.releaseVersion.Disable()
		return false
	}

	log.Log(INFO, "tag is valid!!!!")
	rs.setGitCommands()

	if rs.versionMessage.String() == "" {
		log.Log(INFO, "tag message is empty!!!!")
		rs.releaseVersion.Disable()
		return false
	}
	if len(rs.versionMessage.String()) > 24 {
		rs.versionMessage.SetLabel("tag message (too long)")
	} else {
		rs.versionMessage.SetLabel("tag message")
	}
	rs.releaseVersion.SetLabel("Release Tag!")
	rs.releaseVersion.Enable()
	return true
}

func (rs *RepoStatus) runGitCommands(verbose bool) bool {
	var line []string
	for _, line = range rs.versionCmds {
		s := strings.Join(line, " ")
		if verbose {
			log.Log(WARN, "RUNNING:", s)
		}
		rs.develMergeB.SetText(s)
		r := rs.Run(line)
		output := strings.TrimSpace(strings.Join(r.Stdout, "\n"))
		if r.Error != nil {
			log.Warn("ABEND EXECUTION")
			log.Warn("error =", r.Error)
			log.Warn("output =", output)
			return false
		}
		if r.Exit != 0 {
			log.Warn("Returned with exit =", r.Exit)
			log.Warn("output was =", output)
		}
		log.Log(INFO, "RUN DONE")
	}
	return true
}

func (rs *RepoStatus) setGitCommands() {
	var line1, line2, line3 []string
	var all [][]string

	newTag := rs.newversion.String()
	line1 = append(line1, "git", "tag", "v"+newTag, "-m", rs.versionMessage.String())
	all = append(all, line1)
	line2 = append(line2, "git", "push", "--tags")
	all = append(all, line2)
	line3 = append(line3, "git", "push", "--prune", "--tags")
	all = append(all, line3)

	rs.versionCmds = all

	var tmp []string
	// convert to displayable to the user text
	for _, line := range all {
		s := strings.Join(line, " ")
		log.Log(INFO, "s =", s)
		tmp = append(tmp, s)
	}

	rs.versionCmdOutput.SetValue(strings.Join(tmp, "\n"))
}

func (rs *RepoStatus) setMergeDevelCommands() {
	var line1, line2, line3 []string
	var all [][]string

	master := rs.GetMasterBranchName()
	devel := rs.GetDevelBranchName()

	line1 = append(line1, "git", "checkout", master)
	all = append(all, line1)
	line2 = append(line2, "git", "merge", devel)
	all = append(all, line2)
	line3 = append(line3, "git", "push")
	all = append(all, line3)

	rs.versionCmds = all

	var tmp []string
	// convert to displayable to the user text
	for _, line := range all {
		s := strings.Join(line, " ")
		log.Log(INFO, "s =", s)
		tmp = append(tmp, s)
	}

	rs.versionCmdOutput.SetValue(strings.Join(tmp, "\n"))
}

func (rs *RepoStatus) setMergeUserCommands() {
	var line1, line2, line3 []string
	var all [][]string

	devel := rs.GetDevelBranchName()
	user := rs.userWorkingName.String()

	line1 = append(line1, "git", "checkout", devel)
	all = append(all, line1)
	line2 = append(line2, "git", "merge", user)
	all = append(all, line2)
	line3 = append(line3, "git", "push")
	all = append(all, line3)

	rs.versionCmds = all

	var tmp []string
	// convert to displayable to the user text
	for _, line := range all {
		s := strings.Join(line, " ")
		log.Log(INFO, "s =", s)
		tmp = append(tmp, s)
	}

	rs.versionCmdOutput.SetValue(strings.Join(tmp, "\n"))
}

func (rs *RepoStatus) IsCorrectMode(mode string) bool {
	switch mode {
	case "master":
		if rs.GetCurrentBranchName() == rs.GetMasterBranchName() {
			return true
		} else {
			return false
		}
	case "devel":
		if rs.GetCurrentBranchName() == rs.GetDevelBranchName() {
			return true
		} else {
			return false
		}
	case "user":
		if rs.GetCurrentBranchName() == rs.GetUserBranchName() {
			return true
		} else {
			return false
		}
	}
	return false
}