package meowlib_test

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"testing"

	"forge.redroom.link/yves/meowlib"
	"forge.redroom.link/yves/meowlib/client"
)

func TestEndToEnd(t *testing.T) {
	//
	// Create my own identity
	//
	fmt.Println("Trying to load identity from file.")
	Me, err := client.LoadIdentity("id.enc")
	if err != nil {
		fmt.Println("Failed : creating New identity...")
		Me = client.CreateIdentity("myname")

		//
		// define my preferences (servers)
		//
		Me.MessageServers.Name = "Message Servers"
		Me.MessageServers.AddUrls([]string{"http://127.0.0.1/meow/", "mqtt://127.0.0.1", "meow://127.0.0.1"})
		//
		// create an invitation for a friend, I want him/her to know me as Bender
		//
		fmt.Println("Creating an invitation for the first friend...")
		MyFirstFriend, invitation := Me.InvitePeer("Bender", "myfirstfriend", []int{1, 2})
		// print my invitation
		a, _ := json.Marshal(invitation)
		fmt.Println(string(a))
		// TODO : Convert invitation to QR Code
		invitation.WritePng("invitation.png")
		//
		// Simulate peer invitation response : generate the friend's keypair
		fmt.Println("Simulating first friend answer...")
		var ReceivedContact meowlib.ContactCard

		// Friend simulated invitation
		FirstFriendContactKp := meowlib.NewKeyPair()
		FirstFriendEncryptionKp := meowlib.NewKeyPair()
		FirstFriendLookupKp := meowlib.NewKeyPair()
		ReceivedContact.Name = "I'm the friend"
		ReceivedContact.ContactPublicKey = FirstFriendContactKp.Public
		ReceivedContact.EncryptionPublicKey = FirstFriendEncryptionKp.Public
		ReceivedContact.LookupPublicKey = FirstFriendLookupKp.Public
		FriendServer1KP := meowlib.NewKeyPair()
		FriendServer1 := meowlib.Server{Name: "FriendServer1", Url: "http://myfriend.org/meow/", PublicKey: FriendServer1KP.Public, Description: "Fancy description", ConfidenceLevel: 1}
		ReceivedContact.PullServers = append(ReceivedContact.PullServers, &FriendServer1)
		// end Friend simulated invitation

		// Finalize the contact with the invitation response
		Me.FinalizeInvitation(MyFirstFriend, &ReceivedContact)
		err = Me.Save("id.enc")
		if err != nil {
			fmt.Println(err.Error())
		}

		a, _ = json.Marshal(Me)
		ioutil.WriteFile("id.json", a, 0644)
		fmt.Println(string(a))

		// create message to simulated friend
		sentmessage := "Hello friend!"
		EncMsg, EncMsgSignature, FriendServers, err := MyFirstFriend.AsymEncryptMessage([]byte(sentmessage))
		if err != nil {
			fmt.Println(err.Error())
		}
		fmt.Println(len(FriendServers))
		packedMsg := MyFirstFriend.Pack(EncMsg, EncMsgSignature)

		srv := FriendServers[0]
		intS1 := client.InternalServerFromServer(srv)

		// Creating Server message
		toServerMessage, err := intS1.BuildMessageSendingMessage(&packedMsg)
		// Encrypting it
		encToServerMessage, encToServerMessageSignature, err := intS1.AsymEncryptMessage(toServerMessage)
		// Packing it
		protoPackedServerMsg, err := intS1.PackServerMessage(encToServerMessage, encToServerMessageSignature)
		// Sending to server => fake action (network protocol trnasfer are not part of meowlib)
		// You have to implement the netwok layer
		println(len(protoPackedServerMsg))

		//
		// Simulating server side processing
		//

		//
		// Back to client, decoding server response
		//
		decMess, err2 := MyFirstFriend.AsymDecryptMessage([]byte(EncMsg), EncMsgSignature)
		if err2 != nil {
			fmt.Println(err2.Error())
		}
		fmt.Println(decMess)

	}

}