setup-golang-project.sh

#!/bin/bash

getGoVersion() {
    versionInfo=$(go version 2>&1)
    if [ $? -ne 0 ]; then
        echo "Error executing 'go version' command: $versionInfo" >&2
        return 1
    fi

    version=$(echo $versionInfo | awk '{print $3}')
    if [ -z "$version" ]; then
        echo "Unable to parse Go version" >&2
        return 1
    fi

    version=${version#go}
    echo $version
    return 0
}

GO_VERSION=$(getGoVersion)

read -p "Do you want to create a new directory for your Go project? (y/n): " create_new_directory

if [ "$create_new_directory" == "y" ]; then
	read -p "Enter your Go project name: " project_name
	mkdir "$project_name"
	cd "$project_name" || exit
fi

touch go.mod
echo "module $project_name" >>go.mod
echo "" >>go.mod
echo "go $GO_VERSION" >>go.mod

mkdir cmd
touch cmd/main.go
echo "package main" >>cmd/main.go
echo "" >>cmd/main.go
echo "import \"fmt\"" >>cmd/main.go
echo "" >>cmd/main.go
echo "func main() {" >>cmd/main.go
echo "    fmt.Println(\"hello from: $project_name\")" >>cmd/main.go
echo "}" >>cmd/main.go

if [ -f "go.mod" ]; then
  touch build.sh

  echo "#!/bin/bash" >>build.sh
  echo "" >>build.sh
  echo "get_module_name() { " >>build.sh
  echo 'grep "^module" go.mod | awk '"'"'{print $2}'"'"' | cut -d / -f 2' >>build.sh
  echo "}" >>build.sh
  echo "" >>build.sh
  echo 'MODULE_NAME=$(get_module_name)' >>build.sh
  echo "" >>build.sh
  echo 'if [ -z "$MODULE_NAME" ]; then' >>build.sh
  echo "   echo "Error: Could not determine module name from go.mod"" >>build.sh
  echo "    exit 1" >>build.sh
  echo "fi" >>build.sh
  echo "" >>build.sh
  echo 'mkdir -p bin' >>build.sh
  echo 'GOOS=darwin GOARCH=amd64 go build -o "bin/${MODULE_NAME}-darwin-amd64" ./cmd' >>build.sh
  echo 'GOOS=linux GOARCH=amd64 go build -o "bin/${MODULE_NAME}-linux-amd64" ./cmd' >>build.sh
  echo 'GOOS=windows GOARCH=amd64 go build -o "bin/${MODULE_NAME}-windows-amd64.exe" ./cmd' >>build.sh
  echo '' >>build.sh
  echo 'echo "Build completed. Binaries are in the bin/ directory."' >>build.sh

  chmod +x build.sh
else
  echo "go.mod file does not exist in the current directory."
fi


echo -e "\nYour Go project has been initialized!"
echo -e "To run your Go program, use: \n\n\tgo run main.go\n"