package characters

import (
	"cwtch.im/cwtch/event"
	"cwtch.im/cwtch/protocol/connections"
	"cwtch.im/ui/go/constants"
	"cwtch.im/ui/go/cwutil"
	"cwtch.im/ui/go/gobjects"
	"cwtch.im/ui/go/gothings"
	"cwtch.im/ui/go/the"
	"git.openprivacy.ca/openprivacy/libricochet-go/log"
	"time"
)

func IncomingListener(uiState *gothings.InterfaceState, subscribed chan bool) {
	q := event.NewQueue()
	the.EventBus.Subscribe(event.NewMessageFromPeer, q)
	the.EventBus.Subscribe(event.PeerAcknowledgement, q)
	the.EventBus.Subscribe(event.NewMessageFromGroup, q)
	the.EventBus.Subscribe(event.NewGroupInvite, q)
	the.EventBus.Subscribe(event.SendMessageToGroupError, q)
	the.EventBus.Subscribe(event.SendMessageToPeerError, q)
	the.EventBus.Subscribe(event.ServerStateChange, q)
	the.EventBus.Subscribe(event.PeerStateChange, q)
	subscribed <- true

	for {
		e := q.Next()

		switch e.EventType {
		case event.NewMessageFromPeer: //event.TimestampReceived, event.RemotePeer, event.Data
			ts, _ := time.Parse(time.RFC3339Nano, e.Data[event.TimestampReceived])
			uiState.AddMessage(&gobjects.Message{
				Handle:    e.Data[event.RemotePeer],
				From:      e.Data[event.RemotePeer],
				Message:   e.Data[event.Data],
				Image:     cwutil.RandomProfileImage(e.Data[event.RemotePeer]),
				Timestamp: ts,
			})
			if the.Peer.GetContact(e.Data[event.RemotePeer]) == nil {
				the.Peer.AddContact(e.Data[event.RemotePeer], e.Data[event.RemotePeer], false)
			}

		case event.PeerAcknowledgement:
			uiState.Acknowledge(e.Data[event.EventID])

		case event.NewMessageFromGroup: //event.TimestampReceived, event.TimestampSent, event.Data, event.GroupID, event.RemotePeer
			var name string
			var exists bool
			ctc := the.Peer.GetContact(e.Data[event.RemotePeer])
			if ctc != nil {
				name, exists = ctc.GetAttribute(constants.Nick)
				if !exists || name == "" {
					name = e.Data[event.RemotePeer]
				}
			} else {
				name = e.Data[event.RemotePeer]
			}

			ts, _ := time.Parse(time.RFC3339Nano, e.Data[event.TimestampSent])
			uiState.AddMessage(&gobjects.Message{
				MessageID:    e.Data[event.Signature],
				Handle:       e.Data[event.GroupID],
				From:         e.Data[event.RemotePeer],
				Message:      e.Data[event.Data],
				Image:        cwutil.RandomProfileImage(e.Data[event.RemotePeer]),
				FromMe:       e.Data[event.RemotePeer] == the.Peer.GetProfile().Onion,
				Timestamp:    ts,
				Acknowledged: true,
				DisplayName:  name,
			})
		case event.NewGroupInvite:
			gid, err := the.Peer.GetProfile().ProcessInvite(e.Data[event.GroupInvite], e.Data[event.RemotePeer])
			group := the.Peer.GetGroup(gid)
			if err == nil && group != nil {
				uiState.AddContact(&gobjects.Contact{
					Handle:      gid,
					DisplayName: gid,
					Image:       cwutil.RandomGroupImage(gid),
					Server:      group.GroupServer,
					Trusted:     false,
					Loading:     false,
				})
			}
		case event.SendMessageToGroupError:
			uiState.AddSendMessageError(e.Data[event.GroupServer], e.Data[event.Signature], e.Data[event.Error])
		case event.SendMessageToPeerError:
			uiState.AddSendMessageError(e.Data[event.RemotePeer], e.Data[event.EventID], e.Data[event.Error])
		case event.PeerStateChange:
			cxnState := connections.ConnectionStateToType[e.Data[event.ConnectionState]]

			// if it's not in the.Peer it's new. Only add once Authed
			_, exists := the.Peer.GetProfile().Contacts[e.Data[event.RemotePeer]]
			if !exists {
				// Contact does not exist, we will add them but we won't know who they are until they are authenticated
				// So if we get any other state from an unknown contact we do nothing
				// (the next exists check will fail)
				if cxnState == connections.AUTHENTICATED {
					the.Peer.AddContact(e.Data[event.RemotePeer], e.Data[event.RemotePeer], false)
				}
			}

			// if it's in the.Peer its either existing and needs an update or not in the UI and needs to be added
			if contact, exists := the.Peer.GetProfile().Contacts[e.Data[event.RemotePeer]]; exists {
				contact.State = e.Data[event.ConnectionState]
				uiContact := uiState.GetContact(contact.Onion)
				if uiContact != nil {
					if uiContact.Status != int(cxnState) {
						uiContact.Status = int(cxnState)
						uiState.UpdateContact(contact.Onion)
					}
				} else {
					uiState.AddContact(&gobjects.Contact{
						e.Data[event.RemotePeer],
						e.Data[event.RemotePeer],
						cwutil.RandomProfileImage(e.Data[event.RemotePeer]),
						"",
						int(cxnState),
						false,
						false,
						false,
					})
				}
			}
		case event.ServerStateChange:
			serverOnion := e.Data[event.GroupServer]
			state := connections.ConnectionStateToType[e.Data[event.ConnectionState]]
			groups := the.Peer.GetGroups()
			for _, groupID := range groups {
				group := the.Peer.GetGroup(groupID)
				group.State = e.Data[event.ConnectionState]
				if group != nil && group.GroupServer == serverOnion {
					uiState.GetContact(group.GroupID).Status = int(state)
					if state == connections.AUTHENTICATED {
						uiState.GetContact(group.GroupID).Loading = true
					} else {
						uiState.GetContact(group.GroupID).Loading = false
					}
					uiState.UpdateContact(group.GroupID)
				} else {
					log.Errorf("found group that is nil :/")
				}
			}
		}
	}
}