package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"log"
	"os"
	"time"
)

// WriteToFile will print any string of text to a file safely by
// checking for errors and syncing at the end.
func writeToFile(filename string, data string) error {
	file, err := os.Create(filename)
	if err != nil {
		return err
	}
	defer file.Close()

	_, err = io.WriteString(file, data)
	if err != nil {
		return err
	}
	return file.Sync()
}

func handlepanic() {

	if a := recover(); a != nil {
		fmt.Println("OPS!: Recovering from:", a)
	}
}

func saveBayesToFile() {

	log.Println("Trying to write json file")

	var jsnBuf = new(bytes.Buffer)
	var tmpJSON string

	Classifier.busy.Lock()
	DumpJSON, err := Classifier.bayez.MarshalJSON()
	if err != nil {
		DumpJSON = []byte(err.Error())
	}
	Classifier.busy.Unlock()

	log.Println("Raw dump of Classifier: ", string(DumpJSON))

	jerr := json.Indent(jsnBuf, DumpJSON, "", " ")
	if jerr == nil {
		tmpJSON = jsnBuf.String()
	} else {
		tmpJSON = jerr.Error()
	}

	sJSON, serr := json.MarshalIndent(Classifier.STATS, "", " ")
	if serr != nil {
		sJSON = []byte(serr.Error())
	}

	dumpfile := os.Getenv("DUMPFILE")
	if dumpfile == "" {
		dumpfile = "bayes.json"
	}

	if DebugLog {
		log.Println(tmpJSON)
	} else {
		writeToFile(dumpfile, tmpJSON)
		writeToFile(dumpfile+".stats", string(sJSON))
		log.Println("File saved: ", dumpfile)
	}

}

func jsonEngine() {

	for {
		log.Println("Zardoz Seniority: ", ProxyFlow.seniority)
		saveBayesToFile()
		time.Sleep(1 * time.Minute)

	}

}

func init() {
	log.Printf("File Engine Starting")

	go jsonEngine()
	log.Printf("FIle Engine Started")
}