make: add init command

Makefile

@@ -47,3 +47,6 @@ lint: bin/golangci-lint
 
 fmt:
 	go fmt ./...
+
+init:
+	go run etc/init.go

README.md

@@ -22,13 +22,17 @@ Clone this repository:
 git clone --depth 1 https://github.com/anycable/anycable-go-scaffold my-cable-project
 ```
 
-Rename the project from `anycable/mycable` to `<org>/<project>` (`go.mod`, `*.go` files, etc.).
+Run the following command to set up the project:
 
-Make sure everything is ready by running `make lint` and `make test`.
+```sh
+make init
+```
+
+It would rename the project from `anycable/mycable` to whatever name you want (`<org>/<project>`) updating the `go.mod`, `*.go` files, etc.
 
 ## Development
 
-**NOTE:** Make sure Go 1.21+ installed.
+**NOTE:** Make sure Go 1.23+ installed.
 
 The following commands are available:
 

etc/init.go

@@ -0,0 +1,107 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+func main() {
+	// Check if PROJECT parameter is provided
+	project := os.Getenv("PROJECT")
+	if project == "" {
+		fmt.Print("Enter project name (e.g. my-org/my-project): ")
+		var input string
+		_, err := fmt.Scanln(&input)
+
+		if err != nil {
+			fmt.Printf("Error reading input: %v\n", err)
+			os.Exit(1)
+		}
+
+		if input == "" {
+			fmt.Println("Error: Project name is required")
+			os.Exit(1)
+		}
+		project = input
+	}
+
+	// Get binary name from project
+	binName := filepath.Base(project)
+
+	// Replace in all .go files
+	err := filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && strings.HasSuffix(path, ".go") {
+			replaceInFile(path, "github.com/anycable/mycable", "github.com/"+project)
+		}
+		return nil
+	})
+	if err != nil {
+		fmt.Printf("Error scanning .go files: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Replace in go.mod
+	replaceInFile("go.mod", "github.com/anycable/mycable", "github.com/"+project)
+
+	// Replace in go.sum
+	replaceInFile("go.sum", "github.com/anycable/mycable", "github.com/"+project)
+
+	// Replace in Makefile
+	replaceInFile("Makefile", "PROJECT=anycable/mycable", "PROJECT="+project)
+
+	// Rename cmd directory
+	err = os.Rename("cmd/mycable", "cmd/"+binName)
+	if err != nil {
+		fmt.Printf("Error renaming cmd directory: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Run go mod tidy
+	if err := execCommand("go", "mod", "tidy"); err != nil {
+		fmt.Printf("Error running go mod tidy: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Run make lint
+	if err := execCommand("make", "lint"); err != nil {
+		fmt.Printf("Error running make lint: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Run make test
+	if err := execCommand("make", "test"); err != nil {
+		fmt.Printf("Error running make test: %v\n", err)
+		os.Exit(1)
+	}
+
+	fmt.Println("Project renamed successfully!")
+}
+
+func replaceInFile(filename, old, new string) {
+	content, err := os.ReadFile(filename)
+	if err != nil {
+		fmt.Printf("Error reading file %s: %v\n", filename, err)
+		os.Exit(1)
+	}
+
+	newContent := strings.ReplaceAll(string(content), old, new)
+
+	err = os.WriteFile(filename, []byte(newContent), 0600)
+	if err != nil {
+		fmt.Printf("Error writing file %s: %v\n", filename, err)
+		os.Exit(1)
+	}
+}
+
+func execCommand(name string, args ...string) error {
+	cmd := exec.Command(name, args...)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}