package chat

import (
	"context"
	"encoding/json"

	"go.uber.org/zap"
)

func (h *MessageHandler) HandleCallOffer(ctx context.Context, client *Client, msg *IncomingMessage) {
	if msg.ConversationID == nil || msg.TargetUserID == nil {
		client.SendJSON(NewErrorResponse("conversation_id and target_user_id are required"))
		return
	}
	if msg.SDP == "" {
		client.SendJSON(NewErrorResponse("sdp is required"))
		return
	}

	outgoing := NewCallOfferResponse(*msg.ConversationID, client.UserID, msg.SDP, msg.CallType)
	data, _ := json.Marshal(outgoing)
	h.hub.SendToUser(*msg.TargetUserID, data)

	h.logger.Info("Call offer relayed",
		zap.String("from", client.UserID.String()),
		zap.String("to", msg.TargetUserID.String()),
		zap.String("type", msg.CallType))
}

func (h *MessageHandler) HandleCallAnswer(ctx context.Context, client *Client, msg *IncomingMessage) {
	if msg.ConversationID == nil || msg.CallerUserID == nil {
		client.SendJSON(NewErrorResponse("conversation_id and caller_user_id are required"))
		return
	}
	if msg.SDP == "" {
		client.SendJSON(NewErrorResponse("sdp is required"))
		return
	}

	outgoing := NewCallAnswerResponse(*msg.ConversationID, *msg.CallerUserID, client.UserID, msg.SDP)
	data, _ := json.Marshal(outgoing)
	h.hub.SendToUser(*msg.CallerUserID, data)
}

func (h *MessageHandler) HandleICECandidate(ctx context.Context, client *Client, msg *IncomingMessage) {
	if msg.ConversationID == nil || msg.TargetUserID == nil {
		client.SendJSON(NewErrorResponse("conversation_id and target_user_id are required"))
		return
	}
	if msg.Candidate == "" {
		client.SendJSON(NewErrorResponse("candidate is required"))
		return
	}

	outgoing := NewICECandidateResponse(*msg.ConversationID, client.UserID, msg.Candidate)
	data, _ := json.Marshal(outgoing)
	h.hub.SendToUser(*msg.TargetUserID, data)
}

func (h *MessageHandler) HandleCallHangup(ctx context.Context, client *Client, msg *IncomingMessage) {
	if msg.ConversationID == nil || msg.TargetUserID == nil {
		client.SendJSON(NewErrorResponse("conversation_id and target_user_id are required"))
		return
	}

	outgoing := NewCallHangupResponse(*msg.ConversationID, client.UserID)
	data, _ := json.Marshal(outgoing)
	h.hub.SendToUser(*msg.TargetUserID, data)
}

func (h *MessageHandler) HandleCallReject(ctx context.Context, client *Client, msg *IncomingMessage) {
	if msg.ConversationID == nil || msg.CallerUserID == nil {
		client.SendJSON(NewErrorResponse("conversation_id and caller_user_id are required"))
		return
	}

	outgoing := NewCallRejectedResponse(*msg.ConversationID, client.UserID)
	data, _ := json.Marshal(outgoing)
	h.hub.SendToUser(*msg.CallerUserID, data)
}