package main

import "log"
import "bytes"
import "os"
import "bufio"
// import "io"
import "io/ioutil"

import "github.com/golang/protobuf/proto"
import pb "git.wit.com/wit/witProtobuf"

//
// writes out several files in /tmp/
//

func main() {
	TestWriteEvent()

	in, err := ioutil.ReadFile("/tmp/testing4.protobuf")
	if err != nil {
		log.Fatalln("Error reading file:", err)
	}
	allEvents := &pb.Event{}
	if err := proto.Unmarshal(in, allEvents); err != nil {
		log.Fatalln("Failed to parse events:", err)
	}

	// listPeople(os.Stdout, allEvents)
	// got := in.String()
	log.Println(in)
}

func marshalWriteToFile(myWriter *bufio.Writer, e *pb.Event) {
	buf, err := proto.Marshal(e)
	if err != nil {
		log.Fatal("marshaling error: ", err)
	}
	tmp, err := myWriter.Write(buf)
	myWriter.Flush()
	log.Println("bufio.Write() tmp, err = ", tmp, err)

	buf, err = proto.Marshal(e)
	tmp2, err := myWriter.Write(buf)
	myWriter.Flush()
	log.Println("bufio.Write() tmp2, err = ", tmp2, err)
}

func TestWriteEvent() {
	buf := new(bytes.Buffer)

	e := pb.CreateSampleEvent()

	got := buf.String()
	log.Println(got)

	newfile, _ := os.Create("/tmp/testing4.protobuf")
	myWriter := bufio.NewWriter(newfile)
	marshalWriteToFile(myWriter, e)

	marshalUnmarshal()
}

func marshalUnmarshal() {
	test := pb.CreateSampleEvent()
	data, err := proto.Marshal(test)
	if err != nil {
		log.Fatal("marshaling error: ", err)
	}

	newTest := &pb.Event{}
	err = proto.Unmarshal(data, newTest)
	if err != nil {
		log.Fatal("unmarshaling error: ", err)
	} else {
		log.Println("proto.Marshal() and proto.Unmarshal() worked")
	}
}