package main

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

var (
	basePath, _ = os.Getwd()
	protoFolder = filepath.Join(basePath, "src")
	protocPath  = filepath.Join(basePath, "protoc-23.1", "bin", "win64", "protoc")
)

func main() {
	//先安装以下插件
	//go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
	args := os.Args
	if len(args) >= 2 {
		//go run . component  编译组件proto
		protoFolder = filepath.Join(protoFolder, args[1])
	}
	//
	protoFiles := getProtoFiles()
	// 编译proto文件为Go文件
	if err := compileProto(protoFiles); err != nil {
		log.Fatalf("编译proto文件失败：%v", err)
	}
}

// 获取指定文件夹下的所有proto文件的绝对路径列表
func getProtoFiles() []string {
	var protoFiles []string
	files, err := os.ReadDir(protoFolder)
	if err != nil {
		log.Fatal("获取proto文件列表失败")
	}
	for _, file := range files {
		protoFiles = append(protoFiles, file.Name())
	}
	return protoFiles
}

// 编译proto文件为Go文件
func compileProto(protoFiles []string) error {
	for _, protoFile := range protoFiles {
		cmd := exec.Command(protocPath, "--proto_path="+protoFolder, "--go_out=../components", protoFile)
		fmt.Println(cmd.String())
		cmd.Stdout = os.Stdout
		cmd.Stderr = os.Stderr
		if err := cmd.Run(); err != nil {
			return err
		}
	}
	return nil
}