maidn-cli/main.go

package main

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

	"github.com/spf13/cobra"
)

var orgName, manifestsRepoName string

func main() {
	var rootCmd = &cobra.Command{
		Use:   "cicd-tool",
		Short: "A CLI tool to manage CI/CD setup for applications.",
	}

	var repoCmd = &cobra.Command{
		Use:   "repo",
		Short: "Manage CI/CD repositories.",
	}

	var initCmd = &cobra.Command{
		Use:   "init",
		Short: "Initializes the manifests repository with namespaces and environment directories.",
		Run:   runInitRepo,
	}

	// Add flags to the 'init' command
	initCmd.Flags().StringVar(&orgName, "org", "", "The GitHub organization (e.g., Pingu-Studio)")
	initCmd.Flags().StringVar(&manifestsRepoName, "manifests-repo", "cicd-deployment-manifests", "The name of the manifests repository")
	initCmd.MarkFlagRequired("org")

	repoCmd.AddCommand(initCmd)
	rootCmd.AddCommand(repoCmd)
	if err := rootCmd.Execute(); err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
}

func runInitRepo(cmd *cobra.Command, args []string) {
	fmt.Println("[INFO] Checking dependencies (git and gh)...")
	if !commandExists("git") || !commandExists("gh") {
		fmt.Println("[ERROR] 'git' and 'gh' must be installed and in your PATH.")
		os.Exit(1)
	}

	fmt.Println("[INFO] Checking GitHub authentication...")
	if err := runCommandQuiet("gh", "auth", "status"); err != nil {
		fmt.Println("[ERROR] You are not logged into the GitHub CLI. Please run 'gh auth login'.")
		os.Exit(1)
	}
	fmt.Println("[SUCCESS] Dependencies and authentication are OK.")

	fullRepoName := fmt.Sprintf("%s/%s", orgName, manifestsRepoName)

	fmt.Printf("[INFO] Checking for repository '%s'...\n", fullRepoName)
	if err := runCommandQuiet("gh", "repo", "view", fullRepoName); err != nil {
		fmt.Printf("[WARNING] Repository '%s' not found. Creating it now...\n", fullRepoName)
		if err := runCommand("gh", "repo", "create", fullRepoName, "--private", "--description", "Centralized deployment manifests for Flux CD"); err != nil {
			fmt.Printf("[ERROR] Failed to create repository: %v\n", err)
			os.Exit(1)
		}
		fmt.Println("[SUCCESS] Repository created.")
	} else {
		fmt.Println("[SUCCESS] Repository already exists.")
	}

	tempDir, err := os.MkdirTemp("", "manifests-repo-*")
	if err != nil {
		fmt.Printf("[ERROR] Failed to create temporary directory: %v\n", err)
		os.Exit(1)
	}
	defer os.RemoveAll(tempDir)

	fmt.Printf("[INFO] Cloning repository into %s...\n", tempDir)
	repoURL := fmt.Sprintf("https://github.com/%s.git", fullRepoName)
	if err := runCommand("git", "clone", repoURL, tempDir); err != nil {
		fmt.Printf("[ERROR] Failed to clone repository: %v\n", err)
		os.Exit(1)
	}

	fmt.Println("[INFO] Ensuring standard directory structure and manifests exist...")
	createStructureAndManifests(tempDir)

	fmt.Println("[INFO] Committing and pushing changes if any...")
	runCommandInDir(tempDir, "git", "config", "user.name", "CICD Tool Initializer")
	runCommandInDir(tempDir, "git", "config", "user.email", "actions@github.com")
	runCommandInDir(tempDir, "git", "add", ".")

	statusCmd := exec.Command("git", "status", "--porcelain")
	statusCmd.Dir = tempDir
	output, _ := statusCmd.Output()
	if len(output) == 0 {
		fmt.Println("[INFO] No changes to commit. Repository is already initialized correctly.")
	} else {
		commitMsg := "feat: Initialize repository structure with namespaces and apps"
		if err := runCommandInDir(tempDir, "git", "commit", "-m", commitMsg); err != nil {
			fmt.Printf("[ERROR] Failed to commit changes: %v\n", err)
			os.Exit(1)
		}
		if err := runCommandInDir(tempDir, "git", "push", "origin", "main"); err != nil {
			fmt.Printf("[ERROR] Failed to push changes: %v\n", err)
			os.Exit(1)
		}
		fmt.Println("[SUCCESS] Changes pushed successfully.")
	}

	fmt.Println("\n🎉 Onboarding complete! 🎉")
	fmt.Println("\n[ACTION REQUIRED] Please update your Flux Kustomization resource in your cluster:")
	fmt.Println("  - Find the Kustomization that points to this repository.")
	fmt.Println("  - Ensure `spec.path` is set to `./` to process the entire repository.")
	fmt.Println("\nExample:")
	fmt.Println("  kubectl edit kustomization all-apps -n flux-system")
}

func createStructureAndManifests(baseDir string) {
	environments := []string{"previews", "staging", "production"}

	for _, env := range environments {
		dirPath := filepath.Join(baseDir, "apps", env)
		if err := os.MkdirAll(dirPath, 0755); err != nil {
			fmt.Printf("[ERROR] Failed to create directory %s: %v\n", dirPath, err)
			os.Exit(1)
		}
		writeFile(filepath.Join(dirPath, ".gitkeep"), "")
	}

	appsKustomizationContent := `apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
  - previews/*.yaml
  - staging/*.yaml
  - production/*.yaml
`
	writeFile(filepath.Join(baseDir, "apps", "kustomization.yaml"), appsKustomizationContent)

	namespacesDir := filepath.Join(baseDir, "namespaces")
	if err := os.MkdirAll(namespacesDir, 0755); err != nil {
		fmt.Printf("[ERROR] Failed to create directory %s: %v\n", namespacesDir, err)
		os.Exit(1)
	}

	for _, ns := range environments {
		namespaceContent := fmt.Sprintf(`apiVersion: v1
kind: Namespace
metadata:
  name: %s
`, ns)
		writeFile(filepath.Join(namespacesDir, ns+".yaml"), namespaceContent)
	}

	kustomizeNamespaces := `apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
  - previews.yaml
  - staging.yaml
  - production.yaml
`
	writeFile(filepath.Join(namespacesDir, "kustomization.yaml"), kustomizeNamespaces)

	kustomizeRoot := `apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
  - ./namespaces
  - ./apps
`
	writeFile(filepath.Join(baseDir, "kustomization.yaml"), kustomizeRoot)
}

func writeFile(path, content string) {
	if err := os.WriteFile(path, []byte(content), 0644); err != nil {
		fmt.Printf("[ERROR] Failed to write file %s: %v\n", path, err)
		os.Exit(1)
	}
}

func commandExists(cmd string) bool {
	_, err := exec.LookPath(cmd)
	return err == nil
}

func runCommand(name string, args ...string) error {
	cmd := exec.Command(name, args...)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	return cmd.Run()
}

func runCommandQuiet(name string, args ...string) error {
	cmd := exec.Command(name, args...)
	cmd.Stdout = nil
	cmd.Stderr = os.Stderr
	return cmd.Run()
}

func runCommandInDir(dir string, name string, args ...string) error {
	cmd := exec.Command(name, args...)
	cmd.Dir = dir
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	return cmd.Run()
}