package repostatus

import (
	"regexp"
	"slices"
	"strings"

	"go.wit.com/gui"
	"go.wit.com/lib/gadgets"
	"go.wit.com/log"
)

type repoTag struct {
	// tracks if the tag is displayed
	hidden bool

	// the tag "v0.1.3"
	tag *gui.Node

	// the .git/ref hash
	ref *gui.Node

	// the .git/ref date
	date *gui.Node

	// a button to delete the tag
	deleteB *gui.Node
}

type repoTags struct {
	// the originating repository
	rs *RepoStatus

	// the window for the tags
	window *gadgets.BasicWindow

	// the box to list all the tags in
	box   *gui.Node
	group *gui.Node
	grid  *gui.Node

	// all the tags
	tags []*repoTag
}

func (rs *RepoStatus) TagWindow() *repoTags {
	// return the window if it was already created
	if rs.TagsW != nil {
		rs.TagsW.window.Toggle()
		return rs.TagsW
	}
	tags := new(repoTags)
	rs.TagsW = tags
	tags.rs = rs

	tags.window = gadgets.RawBasicWindow("tags " + rs.String())
	vbox := tags.window.Box()

	tags.newTagBox(vbox)
	return tags
}

func (tagW *repoTags) newTagBox(box *gui.Node) {
	tagW.group = box.NewGroup(".git tags for " + tagW.rs.String())

	tagW.group.NewButton("prune tags", func() {
		tagW.Prune()
	})
	tagW.group.NewButton("show all", func() {
		for _, t := range tagW.tags {
			t.Show()
		}
	})
	tagW.group.NewButton("delete all", func() {
		for i, t := range tagW.tags {
			if t.hidden {
				// log.Info("tag is hidden", i, t.tag.String())
				continue
			}
			log.Info("tag is shown", i, t.tag.String())
			tagW.Delete(t)
		}
	})

	grid := tagW.group.NewGrid("tags", 4, 1)
	tagW.grid = grid

	grid.NewLabel("version")
	grid.NewLabel("ref")
	grid.NewLabel("date")
	grid.NewLabel("delete")
	// works like a typerwriter
	// grid.NextRow()

	// git tag --list --sort=taggerdate
	// git for-each-ref --sort=taggerdate --format '%(tag) %(*objectname) %(taggerdate)'
	// git rev-parse HEAD
	// if last tag == HEAD, then remove it

	tags := []string{"%(tag)", "%(*objectname)", "%(taggerdate:raw)"}
	format := strings.Join(tags, "_,,,_")
	err, output := tagW.rs.RunCmd([]string{"git", "for-each-ref", "--sort=taggerdate", "--format", format})
	if err != nil {
		output = "git error_,,,_a_,,,_b_,,,c"
	}

	lines := strings.Split(output, "\n")
	// reverse the git order
	slices.Reverse(lines)
	tagW.tags = make([]*repoTag, 0)

	for i, line := range lines {
		var parts []string
		parts = make([]string, 6)
		parts = strings.Split(line, "_,,,_")
		log.Info("found tag:", i, parts)
		if parts[0] == "" {
			continue
		}
		rTag := new(repoTag)
		rTag.tag = grid.NewLabel(parts[0])
		rTag.ref = grid.NewEntrybox(parts[1])
		rTag.date = grid.NewLabel(parts[2])
		rTag.deleteB = grid.NewButton("delete", func() {
			log.Info("remove tag")
		})

		tagW.tags = append(tagW.tags, rTag)
		// works like a typerwriter
		// grid.NextRow()
	}
	// reverse the git order
	// slices.Reverse(rtags.tags)
}

func (rtags *repoTags) ListAll() []*repoTag {
	var tags []*repoTag
	for _, t := range rtags.tags {
		tags = append(tags, t)
	}
	return tags
}

func (rtags *repoTags) List() []*repoTag {
	var tags []*repoTag
	for _, t := range rtags.tags {
		if t.hidden {
			// log.Info("tag is hidden", i, t.tag.String())
			continue
		}
		// log.Info("tag is shown", t.tag.String(), rtags.rs.String())
		tags = append(tags, t)
	}
	return tags
}

func (rtags *repoTags) Prune() {
	dups := make(map[string]*repoTag)
	for i, t := range rtags.tags {
		if t == nil {
			log.Info("tag empty:", i)
			continue
		}
		ref := t.ref.String()
		_, ok := dups[ref]
		if ok {
			log.Info("tag is duplicate:", i, t.tag.String())
		} else {
			log.Info("new tag", i, t.tag.String())
			dups[ref] = t
			t.Hide()
		}

	}
}

// hide tags worth keeping
func (rtags *repoTags) PruneSmart() {
	// always keep the first tag
	var first bool = true

	dups := make(map[string]*repoTag)
	for i, t := range rtags.tags {
		if t == nil {
			log.Info("tag empty:", i)
			continue
		}

		// check for duplicate tags
		ref := t.ref.String()
		_, ok := dups[ref]
		if ok {
			log.Info("tag is duplicate:", i, t.tag.String())
			continue
		}
		dups[ref] = t

		// dump any tags that don't start with 'v'
		//if !strings.HasPrefix(t.tag.String(), "v") {
		//	log.Info("tag does not start with v", i, t.tag.String())
		//	continue
		//}

		isVersion := regexp.MustCompile("v[0-9]+.[0-9]+.[0-9]+").MatchString
		if isVersion(t.tag.String()) {
			log.Info("valid tag", i, t.tag.String())
			t.Hide()
			continue
		}

		if first {
			log.Info("keep first tag", i, t.tag.String())
			t.Hide()
			first = false
			continue
		}

		log.Info("keep tag", i, t.tag.String())
	}
}

// deleting it locally triggers some but when
// the git server was uncontactable (over IPv6 if that matters, probably it doesn't)
// and then the local delete re-added it into the tag
func (rtags *repoTags) Delete(rt *repoTag) {
	rs := rtags.rs

	cmd := []string{"git", "push", "--delete", "origin", rt.tag.String()}
	log.Info("RUN:", cmd)
	err, output := rs.RunCmd(cmd)
	if err != nil {
		log.Info("cmd failed", err)
		log.Info("output:", output)
	}
	log.Info("output:", output)

	cmd = []string{"git", "tag", "--delete", rt.tag.String()}
	log.Info("RUN:", cmd)
	err, output = rs.RunCmd(cmd)
	if err != nil {
		log.Info("cmd failed", err)
		log.Info("output:", output)
	}
	log.Info("output:", output)

}

func (rt *repoTag) TagString() string {
	return rt.tag.String()
}

func (rt *repoTag) Hide() {
	rt.hidden = true
	rt.tag.Hide()
	rt.ref.Hide()
	rt.date.Hide()
	rt.deleteB.Hide()
}

func (rt *repoTag) Show() {
	rt.hidden = false
	rt.tag.Show()
	rt.ref.Show()
	rt.date.Show()
	rt.deleteB.Show()
}