package repostatus

import (
	"bufio"
	"os"
	"path/filepath"
	"strings"

	"go.wit.com/log"
)

func (rs *RepoStatus) GetGoDeps() GoConfig {
	tmp := filepath.Join(rs.realPath.String(), "go.sum")
	gosum, err := os.Open(tmp)
	if err != nil {
		log.Log(REPO, "\tmissing go.sum", rs.realPath.String())
		return nil
	}
	defer gosum.Close()

	var deps GoConfig
	deps = make(GoConfig)

	scanner := bufio.NewScanner(gosum)
	log.Log(REPO, "\tgosum:", tmp)
	for scanner.Scan() {
		line := strings.TrimSpace(scanner.Text())

		parts := strings.Split(line, " ")
		if len(parts) == 3 {
			godep := strings.TrimSpace(parts[0])
			version := strings.TrimSpace(parts[1])
			if strings.HasSuffix(version, "/go.mod") {
				version = strings.TrimSuffix(version, "/go.mod")
			}
			currentversion, ok := deps[godep]
			if ok {
				if currentversion != version {
					log.Log(REPO, "\tREPO:", rs.String(), rs.realPath.String())
					log.Log(REPO, "\t  version mismatch:", godep, version, currentversion)
				}
			} else {
				deps[godep] = version
				log.Log(REPO, "\t", godep, "=", version)
			}
		} else {
			log.Log(REPO, "\t INVALID:", parts)
			return nil
		}
	}

	if err := scanner.Err(); err != nil {
		return nil
	}

	return deps
}