package zoopb

import (
	"bytes"
	"fmt"
	"io"
	"os"
	"path"
	"path/filepath"
)

// remove and return the pb varname
func (pb *Package) DeleteString(varname string) string {
	return "todo"
}

// makes /home/mirrors/debian/dists/ for use by 'apt update'
func (pb *Packages) MakeDists() (string, error) {
	os.Chdir(pb.BaseDir)

	arch := "risc64"
	packageDir := filepath.Join("dists", "sid", "main", "binary"+arch)
	pb.MakePackageFile(packageDir, arch)

	/*
		// 5. Generate and sign the Release file
		log.Println("Generating and signing Release file...")
		if err := generateAndSignReleaseFile(distPath); err != nil {
			log.Printf("Failed to generate or sign Release file: %v\n", err)
			return err
		}
	*/

	return "--- Repository generation complete! ---", nil
}

// similar to "dpkg -I moonbuggy.deb"
// destroys the pb so send a copy
func (pb *Package) writeDebInfo(w io.Writer) {
	fmt.Fprintf(w, "Package: %s\n", pb.Package)
	fmt.Fprintf(w, "Filename: %s\n", pb.Filename)
	fmt.Fprintf(w, "MD5sum: %s\n", pb.DeleteString("md5sum"))
	fmt.Fprintf(w, "SHA1: %s\n", pb.DeleteString("SHA1"))
	fmt.Fprintf(w, "SHA256: %s\n", pb.DeleteString("sha256"))
}

// makes the file "dists/sid/main/binary-riscv64/Packages"
// then compresses it as .gz & .bz2 files
func (pb *Packages) MakePackageFile(packageDir string, arch string) error {
	if err := os.Chdir(pb.BaseDir); err != nil {
		return err
	}

	fullpath := path.Join(pb.BaseDir, packageDir)
	os.MkdirAll(fullpath, 0755)

	// made a new PB in memory of just the matching riscv64.deb files
	matcharch := NewPackages()

	// goes through each .deb file and writes out the entry in the Packages file
	for debPB := range pb.IterByFilename() {
		if debPB.Architecture != arch {
			continue
		}
		matcharch.Append(debPB)
	}

	var data bytes.Buffer
	for debPB := range matcharch.IterByFilename() {
		debPB.writeDebInfo(&data)
	}

	// write out the "Packages" file
	if err := os.WriteFile(filepath.Join(packageDir, "Package"), []byte(data.String()), 0644); err != nil {
		return err
	}

	/*
		// Create "Packages.gz"
		if err := compressFile(filepath.Join(fullfile, "Package.gz"); err != nil {
			return err
		}

		// Create "Packages.gz"
		if err := compressFile(filepath.Join(fullfile, "Package.bz2"); err != nil {
			return err
		}
	*/
	return nil
}