//go:build mage

package main

import (
	"errors"
	"fmt"
	"io/fs"
	"os"
	"path/filepath"
	"slices"
)

const (
	dirModePerm fs.FileMode = 0700
)

// Directories ensure that the directories specified in the configuration is present within the home directory.
func Directories() error {
	config, err := newConfig()
	if err != nil {
		return fmt.Errorf("unable to load the configuration: %w", err)
	}

	userHome, err := os.UserHomeDir()
	if err != nil {
		return fmt.Errorf("unable to get the user's home directory: %w", err)
	}

	for _, dir := range slices.All(config.Directories) {
		path := filepath.Join(userHome, dir)
		if err := ensureDirectory(path); err != nil {
			return fmt.Errorf("unable to ensure that %s is present: %w", path, err)
		}

		fmt.Printf("Successfully ensured %s is present.\n", path)
	}


	/*
	for each dir:

	- get full path
	- get dirinfo
	- if no path, create directory and set mode to 0700 and exit (create a separate function for this)
	- ensure existing directory mode is set to 0700
	*/

	return nil
}

func ensureDirectory(path string) error {
	info, err := os.Stat(path);
	if err != nil {
		if errors.Is(err, os.ErrNotExist) {
			if err := os.Mkdir(path, dirModePerm); err != nil {
				return fmt.Errorf("unable to create the directory: %w", err)
			}

			return nil
		}

		return fmt.Errorf("received an unexpected error after attempting to get the directory information: %w", err)
	}

	if !info.IsDir() {
		return errors.New("the path exists but it is not a directory")
	}

	if info.Mode().Perm() != dirModePerm {
		if err := os.Chmod(path, dirModePerm); err != nil {
			return fmt.Errorf("unable to update the directory's mode to %d: %w", dirModePerm, err)
		}
	}

	return nil
}