feat: Add goctl quickstart (#1889)

* Add goctl quickstart

* Format code

* Format code

tools/goctl/quickstart/mono.go

@@ -0,0 +1,79 @@
+package quickstart
+
+import (
+	_ "embed"
+	"io/ioutil"
+	"path/filepath"
+
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/tools/goctl/api/gogen"
+	"github.com/zeromicro/go-zero/tools/goctl/util"
+	"github.com/zeromicro/go-zero/tools/goctl/util/pathx"
+)
+
+var (
+	//go:embed idl/greet.api
+	apiContent string
+	//go:embed idl/svc.tpl
+	svcContent string
+	//go:embed idl/apilogic.tpl
+	apiLogicContent string
+	//go:embed idl/api.yaml
+	apiEtcContent string
+
+	apiWorkDir string
+)
+
+func initAPIFlags() error {
+	apiWorkDir = filepath.Join(projectDir, "api")
+	if err := pathx.MkdirIfNotExist(apiWorkDir); err != nil {
+		return err
+	}
+
+	apiFilename := filepath.Join(apiWorkDir, "greet.api")
+	apiBytes := []byte(apiContent)
+	if err := ioutil.WriteFile(apiFilename, apiBytes, 0666); err != nil {
+		return err
+	}
+
+	gogen.VarStringDir = apiWorkDir
+	gogen.VarStringAPI = apiFilename
+	return nil
+}
+
+type mono struct {
+	callRPC bool
+}
+
+func newMonoService(callRPC bool) mono {
+	m := mono{callRPC}
+	m.createAPIProject()
+	return m
+}
+
+func (m mono) createAPIProject() {
+	logx.Must(initAPIFlags())
+	log.Debug(">> Generating quickstart api project...")
+	logx.Must(gogen.GoCommand(nil, nil))
+	etcFile := filepath.Join(apiWorkDir, "etc", "greet.yaml")
+	logx.Must(ioutil.WriteFile(etcFile, []byte(apiEtcContent), 0666))
+	logicFile := filepath.Join(apiWorkDir, "internal", "logic", "pinglogic.go")
+
+	logx.Must(util.With("logic").Parse(apiLogicContent).SaveTo(map[string]bool{
+		"callRPC": m.callRPC,
+	}, logicFile, true))
+
+	if m.callRPC {
+		svcFile := filepath.Join(apiWorkDir, "internal", "svc", "servicecontext.go")
+		logx.Must(ioutil.WriteFile(svcFile, []byte(svcContent), 0666))
+	}
+}
+
+func (m mono) start() {
+	if !m.callRPC {
+		goModTidy(projectDir)
+	}
+	log.Debug(">> Ready to start an api server...")
+	log.Debug(">> Try to execute 'curl --request POST http://127.0.0.1:8888/ping' after service startup...")
+	goStart(apiWorkDir)
+}