package http

import (
	"net/http"
	"strings"

	roomv1 "hyapp/api/proto/room/v1"
	"hyapp/pkg/roomid"
)

// createRoom 把创建房间 HTTP JSON 请求转换为 room-service CreateRoom 命令。
func (h *Handler) createRoom(writer http.ResponseWriter, request *http.Request) {
	var body struct {
		RoomID    string `json:"room_id"`
		CommandID string `json:"command_id"`
		SeatCount int32  `json:"seat_count"`
		Mode      string `json:"mode"`
	}

	if !decode(writer, request, &body) {
		return
	}
	if !roomid.ValidStringID(body.RoomID) {
		// CreateRoom rejects IDs that would later fail Tencent IM GroupID or RTC strRoomId.
		writeError(writer, request, http.StatusBadRequest, codeInvalidArgument, "invalid argument")
		return
	}
	body.Mode = strings.TrimSpace(body.Mode)
	if body.SeatCount <= 0 || body.Mode == "" {
		// gateway mirrors room-service's hard requirements so client errors stay INVALID_ARGUMENT.
		writeError(writer, request, http.StatusBadRequest, codeInvalidArgument, "invalid argument")
		return
	}

	resp, err := h.roomClient.CreateRoom(request.Context(), &roomv1.CreateRoomRequest{
		Meta:      meta(request, body.RoomID, body.CommandID),
		SeatCount: body.SeatCount,
		Mode:      body.Mode,
	})
	write(writer, request, resp, err)
}

// joinRoom 把进房 HTTP JSON 请求转换为 room-service JoinRoom 命令。
func (h *Handler) joinRoom(writer http.ResponseWriter, request *http.Request) {
	var body struct {
		RoomID    string `json:"room_id"`
		CommandID string `json:"command_id"`
		Role      string `json:"role"`
	}

	if !decode(writer, request, &body) {
		return
	}

	resp, err := h.roomClient.JoinRoom(request.Context(), &roomv1.JoinRoomRequest{
		Meta: meta(request, body.RoomID, body.CommandID),
		Role: body.Role,
	})
	write(writer, request, resp, err)
}

// leaveRoom 把退房 HTTP JSON 请求转换为 room-service LeaveRoom 命令。
func (h *Handler) leaveRoom(writer http.ResponseWriter, request *http.Request) {
	var body struct {
		RoomID    string `json:"room_id"`
		CommandID string `json:"command_id"`
	}

	if !decode(writer, request, &body) {
		return
	}

	resp, err := h.roomClient.LeaveRoom(request.Context(), &roomv1.LeaveRoomRequest{
		Meta: meta(request, body.RoomID, body.CommandID),
	})
	write(writer, request, resp, err)
}

// micUp 把上麦 HTTP JSON 请求转换为 room-service MicUp 命令。
func (h *Handler) micUp(writer http.ResponseWriter, request *http.Request) {
	var body struct {
		RoomID    string `json:"room_id"`
		CommandID string `json:"command_id"`
		SeatNo    int32  `json:"seat_no"`
	}

	if !decode(writer, request, &body) {
		return
	}

	resp, err := h.roomClient.MicUp(request.Context(), &roomv1.MicUpRequest{
		Meta:   meta(request, body.RoomID, body.CommandID),
		SeatNo: body.SeatNo,
	})
	write(writer, request, resp, err)
}

// micDown 把下麦 HTTP JSON 请求转换为 room-service MicDown 命令。
func (h *Handler) micDown(writer http.ResponseWriter, request *http.Request) {
	var body struct {
		RoomID       string `json:"room_id"`
		CommandID    string `json:"command_id"`
		TargetUserID int64  `json:"target_user_id"`
	}

	if !decode(writer, request, &body) {
		return
	}

	resp, err := h.roomClient.MicDown(request.Context(), &roomv1.MicDownRequest{
		Meta:         meta(request, body.RoomID, body.CommandID),
		TargetUserId: body.TargetUserID,
	})
	write(writer, request, resp, err)
}

// changeMicSeat 把换麦位 HTTP JSON 请求转换为 room-service ChangeMicSeat 命令。
func (h *Handler) changeMicSeat(writer http.ResponseWriter, request *http.Request) {
	var body struct {
		RoomID       string `json:"room_id"`
		CommandID    string `json:"command_id"`
		TargetUserID int64  `json:"target_user_id"`
		SeatNo       int32  `json:"seat_no"`
	}

	if !decode(writer, request, &body) {
		return
	}

	resp, err := h.roomClient.ChangeMicSeat(request.Context(), &roomv1.ChangeMicSeatRequest{
		Meta:         meta(request, body.RoomID, body.CommandID),
		TargetUserId: body.TargetUserID,
		SeatNo:       body.SeatNo,
	})
	write(writer, request, resp, err)
}

// muteUser 把禁言 HTTP JSON 请求转换为 room-service MuteUser 命令。
func (h *Handler) muteUser(writer http.ResponseWriter, request *http.Request) {
	var body struct {
		RoomID       string `json:"room_id"`
		CommandID    string `json:"command_id"`
		TargetUserID int64  `json:"target_user_id"`
		Muted        bool   `json:"muted"`
	}

	if !decode(writer, request, &body) {
		return
	}

	resp, err := h.roomClient.MuteUser(request.Context(), &roomv1.MuteUserRequest{
		Meta:         meta(request, body.RoomID, body.CommandID),
		TargetUserId: body.TargetUserID,
		Muted:        body.Muted,
	})
	write(writer, request, resp, err)
}

// kickUser 把踢人 HTTP JSON 请求转换为 room-service KickUser 命令。
func (h *Handler) kickUser(writer http.ResponseWriter, request *http.Request) {
	var body struct {
		RoomID       string `json:"room_id"`
		CommandID    string `json:"command_id"`
		TargetUserID int64  `json:"target_user_id"`
	}

	if !decode(writer, request, &body) {
		return
	}

	resp, err := h.roomClient.KickUser(request.Context(), &roomv1.KickUserRequest{
		Meta:         meta(request, body.RoomID, body.CommandID),
		TargetUserId: body.TargetUserID,
	})
	write(writer, request, resp, err)
}

// sendGift 把送礼 HTTP JSON 请求转换为 room-service SendGift 命令。
// 扣费、幂等、房间表现和 outbox 仍由 room-service 的命令链路统一处理。
func (h *Handler) sendGift(writer http.ResponseWriter, request *http.Request) {
	var body struct {
		RoomID        string `json:"room_id"`
		CommandID     string `json:"command_id"`
		TargetUserID  int64  `json:"target_user_id"`
		GiftID        string `json:"gift_id"`
		GiftCount     int32  `json:"gift_count"`
		GiftUnitValue int64  `json:"gift_unit_value"`
	}

	if !decode(writer, request, &body) {
		return
	}

	resp, err := h.roomClient.SendGift(request.Context(), &roomv1.SendGiftRequest{
		Meta:          meta(request, body.RoomID, body.CommandID),
		TargetUserId:  body.TargetUserID,
		GiftId:        body.GiftID,
		GiftCount:     body.GiftCount,
		GiftUnitValue: body.GiftUnitValue,
	})
	write(writer, request, resp, err)
}