package peer

import (
	"encoding/json"
	"git.mascherari.press/cwtch/model"
	"git.mascherari.press/cwtch/peer/connections"
	"git.mascherari.press/cwtch/peer/peer"
	"git.mascherari.press/cwtch/protocol"
	"github.com/s-rah/go-ricochet/application"
	"github.com/s-rah/go-ricochet/channels"
	"github.com/s-rah/go-ricochet/connection"
	"io/ioutil"
	"sync"
)

/**

PeerConnectionPool
       Background thread running Process()
       Pointer to connections

Move CwtchPeerChannel under peer/
       Write tests for Peer Channel
*/

type CwtchPeerInstance struct {
	rai *application.ApplicationInstance
	ra  *application.RicochetApplication
}

func (cpi *CwtchPeerInstance) Init(rai *application.ApplicationInstance, ra *application.RicochetApplication) {
	cpi.rai = rai
	cpi.ra = ra
}

type CwtchPeer struct {
	connection.AutoConnectionHandler
	Profile           *model.Profile
	PendingContacts   []string
	PendingInvites    map[string][]string
	mutex             sync.Mutex
	Log               chan string `json:"-"`
	peerconnections   map[string]*connections.PeerPeerConnection
	serverconnections map[string]*connections.PeerServerConnection
}

func NewCwtchPeer(name string) *CwtchPeer {
	cp := new(CwtchPeer)
	cp.Profile = model.GenerateNewProfile(name)
	cp.PendingInvites = make(map[string][]string)
	cp.Log = make(chan string)
	cp.peerconnections = make(map[string]*connections.PeerPeerConnection)
	cp.serverconnections = make(map[string]*connections.PeerServerConnection)
	cp.Init()
	return cp
}

func (cp *CwtchPeer) Save(profilefile string) error {
	cp.mutex.Lock()
	bytes, _ := json.Marshal(cp)
	err := ioutil.WriteFile(profilefile, bytes, 0600)
	cp.mutex.Unlock()
	return err
}

func LoadCwtchPeer(profilefile string) (*CwtchPeer, error) {
	bytes, _ := ioutil.ReadFile(profilefile)
	cp := new(CwtchPeer)
	err := json.Unmarshal(bytes, &cp)
	return cp, err
}

// AddContactRequest is the entry point for CwtchPeer relationships
func (cp *CwtchPeer) AddContactRequest(onion string) {
	cp.mutex.Lock()
	cp.PendingContacts = append(cp.PendingContacts, onion)
	go cp.EstablishContact(onion)
	cp.mutex.Unlock()
}

// InviteOnionToGroup kicks off the invite process
func (cp *CwtchPeer) InviteOnionToGroup(onion string, groupid string) {
	cp.mutex.Lock()
	cp.PendingInvites[onion] = append(cp.PendingInvites[onion], groupid)
	cp.mutex.Unlock()
}

func (cp *CwtchPeer) JoinServer(onion string) {

}

func (cp *CwtchPeer) SendMessageToGroup(groupid string, message string) {
	// Lookup Group
	// Lookup Sever Connection
	// If no server connection, spin off server connection
	// Else group.EncryptMessage(message) and send result to server
}

func (cp *CwtchPeer) Listen() error {
	cwtchpeer := new(application.RicochetApplication)
	l, err := application.SetupOnion("127.0.0.1:9051", "tcp4", "", cp.Profile.OnionPrivateKey, 9878)

	if err != nil {
		return err
	}

	af := application.ApplicationInstanceFactory{}
	af.Init()
	af.AddHandler("im.cwtch.peer", func(rai *application.ApplicationInstance) func() channels.Handler {
		cpi := new(CwtchPeerInstance)
		cpi.Init(rai, cwtchpeer)
		return func() channels.Handler {
			cpc := new(peer.CwtchPeerChannel)
			cpc.Handler = &CwtchPeerHandler{Onion: rai.RemoteHostname, Peer: cp}
			return cpc
		}
	})

	cwtchpeer.Init(cp.Profile.OnionPrivateKey, af, new(application.AcceptAllContactManager))
	cp.Log <- "Running cwtch peer on " + l.Addr().String()
	cwtchpeer.Run(l)
	return nil
}

func (cp *CwtchPeer) EstablishContact(onion string) {

}

type CwtchPeerHandler struct {
	Onion string
	Peer  *CwtchPeer
}

func (cph *CwtchPeerHandler) ClientIdentity(ci *protocol.CwtchIdentity) {
	cph.Peer.Log <- "Received Client Identity from " + cph.Onion + " " + ci.String()
	cph.Peer.Profile.AddCwtchIdentity(cph.Onion, ci)
}

func (cph *CwtchPeerHandler) HandleGroupInvite(gci *protocol.GroupChatInvite) {
	cph.Peer.Profile.ProcessInvite(gci)
}

func (cph *CwtchPeerHandler) HandleGroupMessage(gm *protocol.GroupMessage) {
}