package main

import (
	"errors"
	"os"

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

func doStrict(repo *gitpb.Repo) error {
	var err error

	if !repo.IsValidDir() {
		log.Info(repo.GetGoPath(), "is invalid. fix your repos.pb file with 'forge' first")
		log.Info("")
		log.Info("go install go.wit.com/apps/forge@latest")
		log.Info("")
		return errors.New(repo.GetGoPath() + " is invalid. fix your repository list with 'forge' first")
	}
	log.Info(repo.GetGoPath(), "is valid according to forge")

	repo.Run([]string{"git", "notes", "remove"})

	if err := repo.RepoIgnoresGoMod(); err != nil {
		log.Info(repo.GetGoPath(), "git repo does not ignore go.mod. do nothing here", err)
		return nil
	}

	// erase the go.mod and go.sum files
	eraseGoMod(repo)

	if repo.GetMasterBranchName() != repo.GetCurrentBranchName() {
		log.Info("")
		log.Info("You are not operating on your git master branch.")
		log.Info("Publishing go.mod & go.sum files must come from from git version tag on the master branch")
		log.Info("")
		return errors.New(repo.GetGoPath() + " not in the git master branch")
	}

	err = repo.RepoIgnoresGoMod()
	if err != nil {
		log.Info(repo.GetGoPath(), "some wierd git error happened. investigate.", err)
		return err
	}

	if forge.Config.IsReadOnly(repo.GetGoPath()) {
		log.Info("you can not push to read only repositories.", repo.GetGoPath())
		log.Info("change your .config/forge/ to indicate you own this repository")
		return nil
	}

	if repo.CheckDirty() {
		log.Info("")
		log.Info("You can not continue on a dirty git repo.")
		log.Info("")
		return errors.New(repo.GetGoPath() + " git repo is dirty")
	}

	log.Info(repo.GetGoPath(), "GOING TO MAKE NEW go.* FILES")

	// actually will re-create go.sum and go.mod now
	os.Unsetenv("GO111MODULE")
	if result, err := repo.RunQuiet([]string{"go", "mod", "init", repo.GetGoPath()}); err != nil {
		log.Warn("go mod init failed", err)
		for _, line := range result.Stdout {
			log.Warn("stdout:", line)
		}
		for _, line := range result.Stderr {
			log.Warn("stderr:", line)
		}
		return err
	}

	if !repo.Exists("go.mod") {
		// well, if go mod init fails, then we will just error since 'go mod init' almost never fails
		return err
	}

	os.Unsetenv("GO111MODULE")
	if result, err := repo.RunQuiet([]string{"go", "mod", "tidy", "-go=" + golangVersion}); err != nil {
		// I guess the thing to do, if go mod tidy fails, is to just leave the repo alone
		// it's either primitive or could be a go support project but not in go
		for _, line := range result.Stdout {
			log.Warn("stdout:", line)
		}
		for _, line := range result.Stderr {
			log.Warn("stderr:", line)
		}
		return nil
	}

	// the first time, it'll attempt to fix some stuff
	log.Info("Running: updateToNewestReleases()")
	cleanGoDepsCheckOk(repo)

	// try to trim junk
	log.Info("Running: trimGoSum()")
	if err := trimGoSum(repo); err != nil {
		log.Info(repo.GetGoPath(), "trimGoSum() failed", err)
		return err
	}

	if repo.ParseGoSum() {
		log.Info(repo.GetGoPath(), "ParseGoSum() ok")
	} else {
		log.Info(repo.GetGoPath(), "ParseGoSum() failed")
	}

	// check go.sum file
	if err := cleanGoDepsCheckOk(repo); err != nil {
		log.Info("forge.FinalGoDepsCheck() failed. boo. :", repo.GetGoPath())
		return err
	}

	// put the files in the notes section in git
	// this way, git commits are not messed up
	// with this autogenerated code
	if err := saveAsMetadata(repo); err != nil {
		log.Info("save go.mod as git metadata failed", repo.GetGoPath(), err)
		return err
	}

	// everything worked!
	return nil
}