package main

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

	"code.gitea.io/sdk/gitea"
	"github.com/spf13/cobra"
)

var (
	privateRepo bool
)

func main() {
	var rootCmd = &cobra.Command{
		Use:   "teatea",
		Short: "A CLI client for Gitea API",
	}

	var createCmd = &cobra.Command{
		Use:   "create [repository-name]",
		Short: "Create a repository on Gitea",
		Args:  cobra.MaximumNArgs(1),
		RunE:  runCreate,
	}

	createCmd.Flags().BoolVarP(&privateRepo, "private", "p", false, "Create a private repository")

	rootCmd.AddCommand(createCmd)

	if err := rootCmd.Execute(); err != nil {
		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
		os.Exit(1)
	}
}

func runCreate(cmd *cobra.Command, args []string) error {
	token := os.Getenv("GITEA_TOKEN")
	if token == "" {
		return fmt.Errorf("GITEA_TOKEN environment variable is not set")
	}

	host := os.Getenv("GITEA_HOST")
	if host == "" {
		return fmt.Errorf("GITEA_HOST environment variable is not set")
	}

	if !isGitRepository() {
		return fmt.Errorf("not in a git repository")
	}

	var repoName string
	if len(args) > 0 {
		repoName = args[0]
	} else {
		cwd, err := os.Getwd()
		if err != nil {
			return fmt.Errorf("failed to get current directory: %w", err)
		}
		repoName = filepath.Base(cwd)
	}

	client, err := gitea.NewClient(host, gitea.SetToken(token))
	if err != nil {
		return fmt.Errorf("failed to create Gitea client: %w", err)
	}

	user, _, err := client.GetMyUserInfo()
	if err != nil {
		return fmt.Errorf("failed to get user info: %w", err)
	}

	createOpts := gitea.CreateRepoOption{
		Name:    repoName,
		Private: privateRepo,
	}

	repo, _, err := client.CreateRepo(createOpts)
	if err != nil {
		return fmt.Errorf("failed to create repository: %w", err)
	}

	fmt.Printf("Repository created: %s\n", repo.HTMLURL)

	if err := setupGitRemote(host, user.UserName, repoName); err != nil {
		return fmt.Errorf("failed to setup git remote: %w", err)
	}

	return nil
}

func isGitRepository() bool {
	_, err := os.Stat(".git")
	return err == nil
}

func setupGitRemote(host, username, repoName string) error {
	repoURL := fmt.Sprintf("%s/%s/%s.git", host, username, repoName)

	originExists := remoteExists("origin")
	giteaExists := remoteExists("gitea")

	if !originExists {
		if err := addRemote("origin", repoURL); err != nil {
			return err
		}
		fmt.Fprintf(os.Stderr, "Added 'origin' remote: %s\n", repoURL)
	} else if !giteaExists {
		if err := addRemote("gitea", repoURL); err != nil {
			return err
		}
		fmt.Fprintf(os.Stderr, "Added 'gitea' remote: %s\n", repoURL)
	}

	return nil
}

func remoteExists(name string) bool {
	cmd := fmt.Sprintf("git remote get-url %s", name)
	output, err := execCommand(cmd)
	return err == nil && output != ""
}

func addRemote(name, url string) error {
	cmd := fmt.Sprintf("git remote add %s %s", name, url)
	_, err := execCommand(cmd)
	return err
}

func execCommand(command string) (string, error) {
	parts := strings.Fields(command)
	if len(parts) == 0 {
		return "", fmt.Errorf("empty command")
	}

	cmd := exec.Command(parts[0], parts[1:]...)
	output, err := cmd.CombinedOutput()
	return strings.TrimSpace(string(output)), err
}