add smallweb create command

Author: pomdtr

example/example/.gitignore

@@ -0,0 +1,2 @@
+.env
+data

example/example/main.ts

@@ -0,0 +1,8 @@
+export default {
+    fetch: (_req: Request) => {
+        return new Response("Hello from smallweb!")
+    },
+    run: (_args: string[]) => {
+        console.log("Hello from smallweb!")
+    }
+}

internal/cmd/create.go

@@ -0,0 +1,49 @@
+package cmd
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+)
+
+func NewCmdCreate() *cobra.Command {
+	var flags struct {
+		template string
+	}
+
+	cmd := &cobra.Command{
+		Use:   "create [app]",
+		Args:  cobra.ExactArgs(1),
+		Short: "Create a new Smallweb app",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			appDir := filepath.Join(k.String("dir"), args[0])
+			if _, err := os.Stat(appDir); !os.IsNotExist(err) {
+				cmd.PrintErrf("App directory %s already exists.\n", appDir)
+				return ExitError{1}
+			}
+
+			gitCloneCmd := exec.Command("git", "clone", "--single-branch", "--depth=1", flags.template, appDir)
+			gitCloneCmd.Stderr = cmd.ErrOrStderr()
+			gitCloneCmd.Stdout = cmd.OutOrStdout()
+
+			if err := gitCloneCmd.Run(); err != nil {
+				cmd.PrintErrf("Failed to clone template repository: %v\n", err)
+				return ExitError{1}
+			}
+
+			if err := os.RemoveAll(filepath.Join(appDir, ".git")); err != nil {
+				cmd.PrintErrf("Failed to remove .git directory: %v\n", err)
+				return ExitError{1}
+			}
+
+			cmd.Printf("Created new Smallweb app in %s\n", appDir)
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVarP(&flags.template, "template", "t", "https://github.com/pomdtr/smallweb-app-template", "git url of the template repository to use for creating a new project")
+
+	return cmd
+}

internal/cmd/root.go

@@ -275,6 +275,7 @@ func NewCmdRoot() *cobra.Command {
 	rootCmd.AddCommand(NewCmdLink())
 	rootCmd.AddCommand(NewCmdGitReceivePack())
 	rootCmd.AddCommand(NewCmdGitUploadPack())
+	rootCmd.AddCommand(NewCmdCreate())
 
 	if _, ok := os.LookupEnv("SMALLWEB_DISABLE_COMPLETIONS"); ok {
 		rootCmd.CompletionOptions.DisableDefaultCmd = true