package reposervice

import (
	"fmt"
	"os"
	"os/exec"
	"path"
	"path/filepath"

	"code.aides.space/aides-infra/aides-repo-api/internal/logger"
)

func createRepoDirs(repoDir, repoName, arch string) error {
	log := logger.GetLogger()
	// Create the 'base' directory
	baseDir := path.Join(repoDir, arch, "base")
	err := os.MkdirAll(baseDir, os.ModePerm)
	if err != nil {
		log.Error("Failed to create directory", map[string]interface{}{
			"directory": baseDir,
			"err":       err,
		})
		return err
	}

	// Create the 'RPMS.<REPO_NAME>' directory
	rpmsDir := path.Join(repoDir, arch, fmt.Sprintf("RPMS.%s", repoName))
	err = os.MkdirAll(rpmsDir, os.ModePerm)
	if err != nil {
		log.Error("Failed to create directory", map[string]interface{}{
			"directory": rpmsDir,
			"err":       err,
		})
		return err
	}

	return nil
}

func runGenbasedir(repoDir, arch, repoName string) error {
	log := logger.GetLogger()
	cmd := exec.Command(
		"genbasedir",
		"--bloat",
		"--progress",
		fmt.Sprintf("--topdir=%s", repoDir),
		arch,
		repoName,
	)
	cmd.Stdout = nil
	cmd.Stderr = nil
	err := cmd.Run()
	if err != nil {
		log.Error(
			"Failed to run genbasedir",
			map[string]interface{}{
				"arch":      arch,
				"error":     err,
				"cmd_error": cmd.Stderr,
			},
		)
		return err
	}
	log.Debug("Successfully ran genbasedir", map[string]interface{}{
		"arch": arch,
	})

	return nil
}

func createSymlink(target, link string) error {
	if _, err := os.Lstat(link); err == nil {
		if err := os.Remove(link); err != nil {
			return fmt.Errorf("failed to remove existing file or symlink: %w", err)
		}
	}

	if err := os.Symlink(target, link); err != nil {
		return fmt.Errorf("failed to create symlink: %w", err)
	}

	return nil
}

func renameIfExists(oldPath, newPath string) error {
	log := logger.GetLogger()
	log.Debug(filepath.Dir(newPath))

	if _, err := os.Stat(oldPath); err == nil {
		log.Debug(filepath.Dir(newPath))
		if err = os.MkdirAll(
			filepath.Dir(newPath),
			os.ModePerm,
		); err != nil {
			return err
		}
		return os.Rename(oldPath, newPath)
	} else if !os.IsNotExist(err) {
		return err
	}
	return nil
}