package main

// import "io"
import "log"
import "net/http"
import "io/ioutil"
import "bytes"

// import "github.com/golang/protobuf/proto"
// import "github.com/gorilla/websocket"
// import "github.com/davecgh/go-spew/spew"
// import "encoding/json"

import "github.com/tidwall/gjson"
import pb "git.wit.com/wit/witProtobuf"

func checkLogin(ge *pb.Event) bool {
	if (ge.Account == nil) {
		log.Println("checkLogin() pb.Event.Account == nil ERROR")
		return false
	}
	if (origLoginCheck(ge) == true) {
		log.Println("checkLogin() LOGIN WORKED")
		return true
	}
	log.Println("checkLogin() LOGIN FAILED. ATTEMPT updateToken(ge)")
	return updateToken(ge)
}

// https://www.reddit.com/r/golang/comments/boznnz/an_alternative_to_gorilla_sessions_jeff_manage/

/*
var upgrader = websocket.Upgrader{
	ReadBufferSize:    4096,
	WriteBufferSize:   4096,
	EnableCompression: true,
	CheckOrigin: func(r *http.Request) bool {
		return true
	},
}

func sendProtobuf(conn *websocket.Conn, msg *pb.Event) {
	log.Println("sendProtobuf() START")
	data, _ := proto.Marshal(msg)
	err := conn.WriteMessage(websocket.BinaryMessage, data)
	if err != nil {
		log.Println("sendProtobuf() write:", err)
	}
	log.Println("sendProtobuf() END")
}
*/

func main() {
	ge := pb.MakeOkResponse()
	c := pb.MakeDefaultConfig()
	ge.Account = c.Accounts[0]
	ge.Account.Username = "jcarr@wit.com"
	ge.Account.Password = "yowzayowza"
	// ge.Account.Token = "eyJhbGciOiJFUzM4NCIsInR5cCI6IkpXVCJ9.eyJ4IjozLCJyIjoiIiwiY3NyZiI6InRBY1p2eXVJbk1YdWUxV0RSbDFIeDI5YSIsImV4cCI6MTU1OTI3MDQwMCwiaXNzIjoid2l0Iiwic3ViIjoiamNhcnJAd2l0LmNvbSJ9.bqXX_6yrUHQGYh3SEmW8ydSa9Xfqx-HIKutTN_GirwhC_VrVX1xJBcgYfjdKGegvwY7Td1vO3rs40Iz7ifcptrtdzJnDX62d_1JJPKBHUQUfnTLr2qoTgaljElFM0Q_e"
	ge.Account.Token = "badtoken"

	checkLogin(ge)

	log.Println("processAddEvent() START ge.Account =", ge.Account)

	tmp := string(GETbody(ge, "http://stackapi:4000/me"))
	log.Println("processAddEvent() recieved json=", tmp)

	tmp  = string(GETbody(ge, "http://stackapi:4000/clusters"))
	log.Println("processAddEvent() recieved json=", tmp)

	// stackapi:4000/vms/jcarr.com?count=1&cpu=2&ram=512&disk=25

	url  := ge.Account.URL + "vms/jcarr.com?count=1&cpu=2&ram=512&disk=25"
	json := newFetchBody(ge, "POST", url)
	log.Println("processAddEvent() recieved json=", json)
}


// should check a user can login here
func processLoginEvent(ge *pb.Event) *pb.Event {
	log.Println("processLoginEvent() LOGIN START")
	if (checkLogin(ge) == false) {
		e := pb.MakeFailResponse()
		e.Comment = "LOGIN FAILED"
		log.Println(e.Comment)
		return e
	}

	e := pb.MakeOkResponse()
	e.Account = ge.Account
	e.Comment = "processLoginEvent() LOGIN WORKED"
	log.Println(e.Comment)
	return e
}

// This is the 'orig' code
// TODO: phase this out for more common code
func origLoginCheck(ge *pb.Event) bool {
	var url string
	var httpType string
	httpType = "GET"
	url = ge.Account.URL + "me"

	log.Println("origLoginCheck() ", httpType, url)
	req, err := http.NewRequest(httpType, url, nil)
	if err != nil {
		ge.Comment = "origLoginCheck() FAILED can't make new req"
		log.Println(ge.Comment)
		return false
	}
	req.Header.Set("X-Wit-Auth", ge.Account.Token)
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		ge.Comment = "origLoginCheck() FAILED Can't exec the req to list networks " + err.Error()
		log.Println(ge.Comment)
		return false
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		ge.Comment = "origLoginCheck() FAILED can't read resp"
		log.Println(ge.Comment)
		return false
	}
	log.Printf("origLoginCheck() ", "RESPONSE =", string(body))
	if body == nil {
		ge.Comment = "origLoginCheck() FAILED RESPONSE is nil"
		log.Println(ge.Comment)
		return false
	} else {
		len := len(body)
		log.Println("origLoginCheck() ", "body = ", string(body))
		log.Println("origLoginCheck() ", "body len = ", len)
		email := gjson.Get(string(body), "email")
		log.Println("origLoginCheck() ", "email = ", email.String())
		log.Println("origLoginCheck() ", "ge.Account.Username = ", ge.Account.Username)
		if (email.String() == ge.Account.Username) {
			ge.Comment = "origLoginCheck() THIS TOTALLY WORKED MAN"
			log.Println(ge.Comment)
			return true
		}
	}
	ge.Comment = "origLoginCheck() FAILED "
	log.Println(ge.Comment)
	return false
}


func fetchGET(token string, a string) []byte {
	return fetchJSON("GET", token, a)
}

func fetchPOST(token string, a string) []byte {
	return fetchJSON("POST", token, a)
}

func fetchJSON(GETorPOST string, token string, a string) []byte {
	log.Println("GOT HERE: fetchJSON(): ", GETorPOST + ": " + a)
	req, err := http.NewRequest(token, a, nil)
	if err != nil {
		log.Fatal("can't make new req")
	}

	// always set X-Wit-Auth even on token request
	if (token == "") {
		token = "badtoken"
	}
	req.Header.Set("X-Wit-Auth", token)

	// needed to allow 'CORS' to work
	req.Header.Set("Access-Control-Allow-Origin", "*")
	req.Header.Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
	req.Header.Set("Access-Control-Allow-Headers", "Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization")

	log.Println("GOT HERE: fetchJSON(): token =", token)

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		log.Println("Can't exec the req to list networks: %s", err)
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Fatal("can't read resp")
	}
	log.Println("GOT HERE: fetchJSON() body =", string(body))
	return body
}

func updateToken(ge *pb.Event) bool {
	if ge == nil {
		return false
	}

	url := ge.Account.URL + "/auth/login" + "?email=" + ge.Account.Email + "&password=" + ge.Account.Password
	json := newFetchBody(ge, "POST", url)

	jwt := gjson.Get(json, "jwt")
	if (jwt.String() == "") {
		ge.Comment = "updateToken() GOT TOKEN == nil"
		log.Println("updateToken() ge.Comment =", ge.Comment)
		return false
	}
	if (jwt.String() != ge.Account.Token) {
		log.Println("updateToken() GOT NEW TOKEN", jwt)
		ge.Account.Token = jwt.String()
	}
	log.Println("updateToken() END")
	return true
}

// url := ge.Account.URL + "/auth/login" + "?email=" + ge.Account.Email + "&password=" + ge.Account.Password

func newFetchBody(ge *pb.Event, POSTorGET string, url string) string {
	if ge == nil {
		log.Println("newFetchBody() has ge = nil")
		ge.Comment = "newFetchBody() has ge = nil"
		return ""
	}
	if ge.Account == nil {
		log.Println("newFetchBody() has ge.Account = nil")
		ge.Comment = "newFetchBody() has ge.Account = nil"
		return ""
	}

	log.Println("newFetchBody()", POSTorGET, "URL =", url)

	var jsonStr = []byte(`{}`)
	req, err := http.NewRequest(POSTorGET, url, bytes.NewBuffer(jsonStr))
	// req.Header.Set("Content-Type", "application/json")
	req.Header.Set("X-Wit-Auth", "tokenrequest")

	if (POSTorGET == "POST") {
		log.Println("newFetchBody()", POSTorGET, "ADDING CORS headers")
		// needed to allow 'CORS' to work
		req.Header.Set("Access-Control-Allow-Origin", "*")
		req.Header.Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
		req.Header.Set("Access-Control-Allow-Headers", "Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization")
		req.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
		req.Header.Set("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11")
	}

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		log.Println(err)
		ge.Comment = err.Error()
		return ""
	}
	defer resp.Body.Close()

	body, _ := ioutil.ReadAll(resp.Body)
	log.Println("newFetchBody() response Body:", string(body))
	log.Println("newFetchBody() response Status:", resp.Status)
	log.Println("newFetchBody() response Headers:", resp.Header)

	return string(body)
}

func GETbody(ge *pb.Event, URL string) string {
	// req, err := http.NewRequest("GET", ge.Account.URL + "clusters", nil)
	req, err := http.NewRequest("GET", URL, nil)
	if err != nil {
		log.Println("GETbody() can't make new req")
		return ""
	}
	req.Header.Set("X-Wit-Auth", ge.Account.Token)
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		log.Printf("Can't exec the req to list networks: %s", err)
		return ""
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Println("can't read resp")
		return ""
	}
	// log.Printf("GETbody() body =", string(body))
	if body == nil {
		log.Println("networks is nil")
		return ""
	}
	return string(body)
}