package main

import (
	"path/filepath"
	"strconv"
	"strings"

	"go.wit.com/gui"
	"go.wit.com/lib/gadgets"
	"go.wit.com/lib/gui/gowit"
	"go.wit.com/lib/gui/repostatus"
	"go.wit.com/lib/gui/shell"
	"go.wit.com/log"
)

type patch struct {
	ref     string
	giturl  string
	comment string
	rs      *repostatus.RepoStatus
}

type patchSummary struct {
	grid     *gui.Node
	updateB  *gui.Node
	docsB    *gui.Node
	gitPushB *gui.Node
	gitPullB *gui.Node
	checkB   *gui.Node

	totalOL        *gadgets.OneLiner
	dirtyOL        *gadgets.OneLiner
	readonlyOL     *gadgets.OneLiner
	totalPatchesOL *gadgets.OneLiner

	unknownOL      *gadgets.OneLiner
	unknownSubmitB *gui.Node

	reason  *gadgets.BasicEntry
	submitB *gui.Node

	allp []*patch
}

func submitPatchesBox(box *gui.Node) *patchSummary {
	s := new(patchSummary)
	group1 := box.NewGroup("Submit Patches Summary")
	s.grid = group1.RawGrid()

	s.grid.NewButton("List Patches", func() {
		for i, p := range s.allp {
			log.Info(i, p.ref, p.rs.String())
		}
		// update the stats
		s.Update()
	})

	s.gitPullB = s.grid.NewButton("git pull", func() {
		me.Disable()
		defer me.Enable()
		for _, repo := range me.allrepos {
			// gitcmd := []string{"git", "fetch", "origin"}
			gitcmd := []string{"git", "pull"}
			err, output := repo.status.RunCmd(gitcmd)
			log.Info("output =", output)
			if err == nil {
				log.Info("git fetch worked", repo.String())
			} else {
				log.Info("git fetch failed", repo.String())
				return
			}
		}
		s.gitPullB.SetText("GOOD")
		// update the stats
		s.Update()
	})

	s.gitPushB = s.grid.NewButton("git push", func() {
		me.Disable()
		defer me.Enable()
		for _, repo := range me.allrepos {
			gitcmd := []string{"git", "push"}
			err, output := repo.status.RunCmd(gitcmd)
			log.Info("output =", output)
			if err == nil {
				log.Info("git push worked", repo.String())
			} else {
				log.Info("git push failed", repo.String())
				return
			}
		}
		s.gitPushB.SetText("GOOD")
		// update the stats
		s.Update()
	})

	s.checkB = s.grid.NewButton("Check repos are working", func() {
		me.Disable()
		defer me.Enable()
		for _, repo := range me.allrepos {
			if repo.giturl != "" {
				log.Info("repo already checked. do they match?", repo.String())
				log.Info("go.wit.com =", repo.giturl)
				log.Info("localurl   =", repo.status.GitURL())
			} else {
				ok, giturl := gowit.CheckRegistered(repo.status)
				if ok {
					log.Info("is url correct?", repo.String(), "vs", giturl)
					repo.giturl = giturl
					if giturl != repo.status.GitURL() {
						log.Info("repo check failed", repo.String())
						s.unknownOL.SetText(repo.String())
						s.unknownOL.Show()
						s.unknownSubmitB.Show()
						return
					}
				} else {
					log.Info("repo check failed", repo.String())
					repo.giturl = "look in .git/config"
					s.unknownOL.SetText(repo.String())
					s.unknownOL.Show()
					s.unknownSubmitB.Show()
					return
				}
			}
		}
		s.checkB.SetText("GOOD")
	})
	s.grid.NextRow()

	s.unknownOL = gadgets.NewOneLiner(s.grid, "Unknown Repo:")
	s.unknownSubmitB = s.grid.NewButton("Register Repo", func() {
		log.Info("Submit repo:", s.unknownOL.String())
		repo, ok := me.allrepos[s.unknownOL.String()]
		if ok {
			log.Info("found repo:", repo.String(), "with giturl", repo.giturl)
			localurl := repo.status.GitURL()
			if localurl == "" {
				log.Info("local repo check failed. repo is not uploaded?")
			} else {
				log.Info("local repo has", localurl)
				// attempts to register the unknown repo
				if gowit.Register(repo.String(), localurl) {
					s.unknownOL.Hide()
					s.unknownSubmitB.Hide()
				}
			}
		} else {
			log.Info("what is this?", s.unknownOL.String())
		}
	})
	s.unknownOL.Hide()
	s.unknownSubmitB.Hide()
	s.grid.NextRow()

	s.totalOL = gadgets.NewOneLiner(s.grid, "Total")
	s.grid.NextRow()

	s.dirtyOL = gadgets.NewOneLiner(s.grid, "dirty")
	s.grid.NextRow()

	s.readonlyOL = gadgets.NewOneLiner(s.grid, "read-only")
	s.grid.NextRow()

	s.totalPatchesOL = gadgets.NewOneLiner(s.grid, "total commits")
	s.grid.NextRow()

	s.reason = gadgets.NewBasicEntry(s.grid, "patch name:")
	s.reason.Custom = func() {
		if s.reason.String() != "" {
			s.submitB.Enable()
		} else {
			s.submitB.Disable()
		}
	}
	s.submitB = s.grid.NewButton("Submit Patches", func() {
		patchdir := filepath.Join(me.userHomePwd.String(), "autotypist.patchset")
		if shell.Exists(patchdir) {
			log.Info("patchset dir already exists", patchdir)
			return
		} else {
			shell.Mkdir(patchdir)
		}
		if !shell.Exists(patchdir) {
			log.Info("something went wrong making", patchdir)
			return
		}
		if makePatchset(patchdir) {
		}
	})
	// disable these until there are not dirty repos
	s.reason.Disable()
	s.submitB.Disable()

	return s
}

func (s *patchSummary) Update() {
	var total, dirty, readonly int
	for _, repo := range me.allrepos {
		total += 1
		if repo.status.CheckDirty() {
			if repo.String() == "go.wit.com/apps/autotypist" {
				// log.Info("ignoring dirty autotypist for now")
				dirty += 1
			} else {
				dirty += 1
			}
		}
		if repo.status.ReadOnly() {
			readonly += 1
		}
	}
	s.totalOL.SetText(strconv.Itoa(total) + " repos")
	s.dirtyOL.SetText(strconv.Itoa(dirty) + " repos")
	s.readonlyOL.SetText(strconv.Itoa(readonly) + " repos")

	p, allp := s.GetPatches()
	if s.allp == nil {
		s.allp = make([]*patch, 0, 0)
		s.allp = append(s.allp, allp...)
	}
	if dirty == 0 {
		s.totalPatchesOL.SetText(strconv.Itoa(p) + " patches")
		s.reason.Enable()
		// force the user to submit a reason to enable the submit button
		// s.submitB.Enable()
	} else {
		s.totalPatchesOL.SetText(strconv.Itoa(p) + " patches + ? dirty")
	}
}

func (s *patchSummary) GetPatches() (int, []*patch) {
	var patchcount int
	patches := make([]*patch, 0, 0)
	for _, repo := range me.allrepos {
		// git log --oneline devel..jcarr
		userv := repo.status.GetUserVersion()
		develv := repo.status.GetDevelVersion()
		usern := repo.status.GetUserBranchName()
		develn := repo.status.GetDevelBranchName()
		if userv == develv {
			// log.Info("skipping unchanged repo", repo.String())
		} else {
			// log.Info("repo userv, develv", userv, develv)
			gitcmd := []string{"git", "log", "--oneline", develn + ".." + usern}
			// log.Info("Run:", gitcmd)
			err, output := repo.status.RunCmd(gitcmd)
			if err == nil {
				// patches := strings.Split(output, "\n")
				for _, line := range strings.Split(output, "\n") {
					parts := strings.Split(line, " ")
					newp := new(patch)
					newp.rs = repo.status
					newp.ref = parts[0]
					newp.comment = strings.Join(parts[1:], " ")
					log.Info("patch:", line, newp.rs.String())
					patchcount += 1
					patches = append(patches, newp)
				}
			} else {
				log.Info("git failed err=", err)
			}
		}
	}
	return patchcount, patches
}

func makePatchset(setdir string) bool {
	for _, repo := range me.allrepos {
		userv := repo.status.GetUserVersion()
		develv := repo.status.GetDevelVersion()
		usern := repo.status.GetUserBranchName()
		develn := repo.status.GetDevelBranchName()
		if userv == develv {
			// this repo is unchanged
			continue
		}

		repodir := filepath.Join(setdir, repo.String())
		shell.Mkdir(repodir)
		// git format-patch branch1..branch2
		gitcmd := []string{"git", "format-patch", "-o", repodir, develn + ".." + usern}
		log.Info("Run:", gitcmd)
		err, output := repo.status.RunCmd(gitcmd)
		log.Info("output =", output)
		if err == nil {
			log.Info("patches made okay for:", repo.String())
			continue
		}
		log.Info("patches failed for:", repo.String())
		return false
	}
	return true
}