package main

import (
	"crypto/md5"
	"os"
	"path/filepath"
	"strings"

	"go.wit.com/lib/config"
	"go.wit.com/lib/gui/shell"
	"go.wit.com/log"
)

func doIncoming() (string, error) {
	os.Chdir(me.mirrorsDir)

	for p := range me.pb.IterAll() {
		log.Info(p.Package, p.Filename)
	}

	err := filepath.Walk("pool", func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}

		if !info.IsDir() && strings.HasSuffix(info.Name(), ".deb") {
			found := me.pb.FindByFilename(path)
			if found == nil {
				log.Printf("new file %s\n", path)
				return nil
			}
			if strings.HasPrefix(path, "pool/main/incoming") {
				letteredDir := log.Sprintf("%1.1s", found.Package)
				_, filename := filepath.Split(path)
				newfilename := filepath.Join("pool/main", letteredDir, found.Package, filename)
				destDir := filepath.Dir(newfilename)
				if err := os.MkdirAll(destDir, 0755); err != nil {
					log.Printf("%s  move incoming oldname %s newname: %s\n", found.Package, path, newfilename)
					log.Fatal("Failed to create destination directory: %v", err)
				}
				if config.Exists(newfilename) {
					olddata, _ := os.ReadFile(path)
					newdata, _ := os.ReadFile(newfilename)
					oldmd5 := md5.Sum(olddata)
					newmd5 := md5.Sum(newdata)
					if oldmd5 == newmd5 {
						log.Info("files are the same", md5.Sum(olddata), md5.Sum(newdata))
					} else {
						shell.RunVerbose([]string{"dpkg", "-I", path})
						shell.RunVerbose([]string{"dpkg", "-I", newfilename})
						log.Printf("different checksums: %s %s\n", path, newfilename)
						log.Printf("md5sum old %x vs new %x\n", md5.Sum(olddata), md5.Sum(newdata))
					}
					me.sh.BadExit("file already exists", nil)
				}
				os.Rename(path, newfilename)
				log.Printf("%s  moved incoming oldname %s newname: %s\n", found.Package, path, newfilename)
				me.sh.GoodExit("file moved")
				return nil
			}
			log.Info("already processed", path)

			// Get control info
			// cmd := exec.Command("dpkg-deb", "-I", path)
			// var out bytes.Buffer
			// cmd.Stdout = &out
			// if err := cmd.Run(); err != nil {
			// 	return fmt.Errorf("failed to run dpkg-deb on %s: %v", path, err)
			// }

		}
		return nil
	})

	return "scanned incoming", err
}