//go:build mage

package main

import (
	"fmt"
	"os"
	"slices"

	"github.com/magefile/mage/sh"
)

// Neovim downloads and manages neovim configuration from a remote git repository.
func Neovim() error {
	config, err := newConfig()
	if err != nil {
		return fmt.Errorf(
			"unable to load the configuration: %w",
			err,
		)
	}

	if !config.Neovim.Manage {
		return nil
	}

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

	var (
	// neovimManagedDir = filepath.Join(rootManagedDir, "nvim")
	// versionLabelFile = filepath.Join(neovimManagedDir, ".managed.version")
	// neovimConfigDir  = filepath.Join(homeConfigDirectory, "nvim")
	)

	tempLocalRepo, err := cloneNvimConfigRepo(config.Neovim.GitRepoURL, config.Neovim.GitRef)
	if err != nil {
		return fmt.Errorf("unable to clone the git repository: %w", err)
	}

	fmt.Println("Git repository cloned to:", tempLocalRepo)

	// defer os.Remove(tempLocalRepo)

	// TODO: copy the files from temp folder to managed folder

	// TODO: add commit/tag ref to .managed.version

	// TODO: symlink all inside managed neovim folder

	return nil
}

func cloneNvimConfigRepo(repoURL, repoRef string) (string, error) {
	cloneDir, err := os.MkdirTemp("/tmp", "neovim-config-")
	if err != nil {
		return "", fmt.Errorf("unable to create the temporary directory: %w", err)
	}

	git := sh.RunCmd("git", "-C", cloneDir)

	commands := [][]string{
		{"init"},
		{"remote", "add", "origin", repoURL},
		{"fetch", "origin", repoRef},
		{"checkout", "FETCH_HEAD"},
	}

	for _, command := range slices.All(commands) {
		if err := git(command...); err != nil {
			return "", err
		}
	}

	return cloneDir, nil
}