package main

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

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

// check if a user can login here
// tries generates a new TOKEN if the old one doesn't work
// fails with the appropriate protobuf response to send
// to the GUI client
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
}

func checkLogin(ge *pb.Event) bool {
	if (ge.Account == nil) {
		log.Println("checkLogin() pb.Event.Account == nil ERROR")
		return false
	}

	url  := ge.Account.URL + "me"
	json := string(GETbody(ge, url))
	if (json != "") {
		email := gjson.Get(json, "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
	}
	log.Println("checkLogin() LOGIN FAILED. ATTEMPT updateToken(ge)")
	return updateToken(ge)
}

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)
	json := POSTbody(ge, 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
}

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)
}

func POSTbody(ge *pb.Event, URL string) string {
	// req, err := http.NewRequest("GET", ge.Account.URL + "clusters", nil)
	log.Println("POSTbody() url =", URL)
	req, err := http.NewRequest("POST", URL, nil)
	if err != nil {
		log.Println("POSTbody() can't make new req")
		return ""
	}

	token := ge.Account.Token
	if (token == "") {
		token = "POSTbodyEmptyToken"
	}

	log.Println("POSTbody() ge.Account.Token =", token)
	req.Header.Set("X-Wit-Auth", ge.Account.Token)
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		log.Printf("POSTbody() Can't exec the req to list networks: %s", err)
		return ""
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Println("POSTbody() can't read resp")
		return ""
	}
	// log.Printf("GETbody() body =", string(body))
	if body == nil {
		log.Println("POSTbody() body is nil")
		return ""
	}
	log.Println("POSTbody() END body =", string(body))
	return string(body)
}