package gitpb

// does processing on the go.mod and go.sum files

import (
	"os"
	"strings"

	"go.wit.com/log"
)

func (repo *Repo) GetRepoType() string {
	if repo == nil {
		return "nil"
	}
	if repo.GoInfo == nil {
		log.Warn("gitpb.RepoType() plugin was not set correctly")
		log.Warn("gitpb.RepoType() plugin was not set correctly")
		log.Warn("gitpb.RepoType() plugin was not set correctly")
		repo.GoInfo = new(GoInfo)
		repo.setRepoType()
	}

	if repo.GoInfo.GoPlugin {
		return "plugin"
	}
	if repo.GoInfo.GoProtobuf {
		return "protobuf"
	}
	if repo.GoInfo.GoBinary {
		if repo.Exists(".plugin") {
			log.Warn("gitpb.RepoType() plugin was not set correctly")
			repo.GoInfo.GoPlugin = true
			return "plugin"
		}
		return "binary"
	}
	if repo.GoInfo.GoLibrary {
		return "library"
	}
	return "err"
}

func (repo *Repo) setRepoType() {
	if repo == nil {
		return
	}
	if repo.Exists(".plugin") {
		repo.GoInfo.GoPlugin = true
		return
	}
	if ok, _, _ := repo.IsProtobuf(); ok {
		repo.GoInfo.GoProtobuf = true
		return
	}
	switch repo.goListRepoType() {
	case "binary":
		repo.GoInfo.GoBinary = true
		return
	case "library":
		repo.GoInfo.GoLibrary = true
		return
	}
}

func (repo *Repo) goListRepoType() string {
	os.Setenv("GO111MODULE", "off")
	cmd := []string{"go", "list", "-f", "'{{if eq .Name \"main\"}}binary{{else}}library{{end}}'"}
	// cmd := []string{"go", "list", "-f", "'{{.Name}}'"} // probably use this. this just prints out the package name
	// cmd := []string{"go", "list", "-f", "'{{.ImportPath}}'"} // returns go.wit.com/lib/protobuf/gitpb

	result := repo.RunQuiet(cmd)
	if result.Error != nil {
		log.Warn("go list binary detect failed", result.Error)
		return ""
	}
	output := strings.TrimSpace(strings.Join(result.Stdout, "\n"))
	output = strings.Trim(output, "'")
	return output
}