package main

import (
	"errors"
	"os"
	"path/filepath"
	"time"

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

func forceReleaseVersion(repo *gitpb.Repo) {
	if argv.Minor {
		// if v1.2.3 change to v.1.3.0
		repo.IncrementTargetMinor()
	} else {
		// if v1.2.3 change to v.1.2.4
		repo.IncrementTargetRevision()
	}
}

func checkpkgcache(repo *gitpb.Repo) error {
	homedir, err := os.UserHomeDir()
	if err != nil {
		return err
	}
	rver := repo.GetLastTag()
	if rver == "" {
		return errors.New("could not get master version")
	}
	moddir := filepath.Join(homedir, "go/pkg/mod", repo.GetGoPath()+"@"+rver)
	if shell.IsDir(moddir) {
		return nil
	}

	getpath := repo.GetGoPath() + "@" + repo.GetLastTag()
	log.Info("MISSING:", getpath)
	_, err = me.startRepo.RunVerboseOnError([]string{"go", "get", getpath})
	return err
}

var rillcount int

func rillRestore(repo *gitpb.Repo) error {
	if me.forge.Config.IsReadOnly(repo.GetGoPath()) {
		return nil
	}
	if me.forge.Config.IsPrivate(repo.GetGoPath()) {
		return nil
	}

	_, err := repo.RunQuiet([]string{"go-mod-clean", "--restore"})
	rillcount += 1
	if err != nil {
		log.Info("go-mod-clean --restore failed", repo.GetGoPath(), err)
		return err
	}
	return nil
}

func rePrepareRelease() {
	// reload the config
	// me.forge = forgepb.Init()
	me.found = new(gitpb.Repos)

	log.Printf("rePrepareRelease() START rill go-mod-clean --restore (11 seconds?)")
	rillcount = 0
	now := time.Now()
	me.forge.RillFuncError(rillRestore)
	log.Printf("showRestore() (%d total repos) took:%s\n", rillcount, shell.FormatDuration(time.Since(now)))
	log.Sleep(1)
	all2 := me.forge.Repos.SortByFullPath()
	for all2.Scan() {
		check := all2.Next()
		if me.forge.Config.IsReadOnly(check.GetGoPath()) {
			continue
		}
		if me.forge.Config.IsPrivate(check.GetGoPath()) {
			continue
		}
		// this should be rare? nonexistant?
		if err := checkpkgcache(check); err != nil {
			log.Info("go get checks failed here.", err, check.GetGoPath())
		}
	}

	all := me.forge.Repos.SortByFullPath()
	for all.Scan() {
		check := all.Next()

		if alreadyDone(check) {
			// means it was already published
			// protects against logic errors that might result
			// in an infinite loop
			log.Info("WARNING alreadyDone rePrepareRelease()", check.GetGoPath())
			continue
		}

		if me.forge.Config.IsReadOnly(check.GetGoPath()) {
			// can't release readonly repos
			continue
		}
		// if master != lastTag, always increment
		master := check.GetMasterVersion()
		lastTag := check.GetLastTag()
		if master != lastTag {
			newmhash := check.GetTagHash(master)
			oldlhash := check.GetTagHash(lastTag)
			if newmhash == oldlhash {
				// they are actually equal
				continue
			}
			b1 := check.CountDiffObjects(oldlhash, newmhash)
			b2 := check.CountDiffObjects(newmhash, oldlhash)
			if b1 != 0 {
				log.Printf("HASH ERROR       %-50s tag %s  < %s\n", check.GetGoPath(), newmhash, oldlhash)
				log.Info("old vs new count", b1, b2, "git merge", oldlhash)
			}

			// if b1 == 0 && b2 == 0 {
			if gitpb.IsGoTagVersionGreater(lastTag, master) {
				// this function is not right really. the hash error above should catch it correctly
				// log.Printf("PROBABLY NOT NEE %-50s tag %s  < %s\n", check.GetGoPath(), lastTag, master)
			}
			log.Printf("NEED RELEASE FOR %-50s tag %s != %s\n", check.GetGoPath(), master, lastTag)
			forceReleaseVersion(check)
			me.found.AppendByGoPath(check)
			continue
		}

		if me.forge.Config.IsPrivate(check.GetGoPath()) {
			// only checks after this are GO dep related which don't matter for private repos
			continue
		}

		if argv.Quick != nil {
			// if argv has 'quick' don't do anything
			// that doesn't actually have a patch
			if master == lastTag {
				continue
			}
		}

		if argv.Protobuf && check.GetRepoType() == "protobuf" {
			log.Printf("NEED RELEASE FOR %s err: %v\n", check.GetGoPath(), "because --protobuf")
			// if --protobuf, this will force upgrade each one
			forceReleaseVersion(check)
			me.found.AppendByGoPath(check)
			continue
		}

		// if the repo is a go binary or plugin for a new release for
		// any library version change
		//		if check.GetRepoType() == "binary" || check.GetRepoType() == "plugin" {
		// check if the package dependancies changed, if so, re-publish
		if err := me.forge.FinalGoDepsCheckOk(check, false); err == nil {
			// log.Printf("go.sum is perfect! %s\n", check.GetGoPath())
			continue
		} else {
			log.Printf("NEED RELEASE FOR %-50s err: %v\n", check.GetGoPath(), err)
			forceReleaseVersion(check)
			me.found.AppendByGoPath(check)
		}

	}
	me.forge.PrintHumanTable(me.found)
}

func printDone() {
	for _, gopath := range me.done {
		log.Info("printDone() THESE WERE PUBLISHED", gopath)
	}
	log.Sleep(1)
}

func alreadyDone(repo *gitpb.Repo) bool {
	for _, gopath := range me.done {
		// log.Info("WARNING already done", gopath, repo.GetGoPath())
		// log.Info("WARNING already done", gopath, repo.GetGoPath())
		// log.Info("WARNING already done", gopath, repo.GetGoPath())
		if repo.GetGoPath() == gopath {
			log.Info("FOUND. RETURN TRUE. already done", gopath, repo.GetGoPath())
			return true
		}
	}
	return false
}