package app

import (
	"net/http"

	"bindbox-game/internal/code"
	"bindbox-game/internal/pkg/core"
	"bindbox-game/internal/pkg/validation"
	usersvc "bindbox-game/internal/service/user"

	"go.uber.org/zap"
)

type bindInviterRequest struct {
	InviteCode string `json:"invite_code" binding:"required"`
}

type bindInviterResponse struct {
	InviterID       int64  `json:"inviter_id"`
	InviterNickname string `json:"inviter_nickname"`
}

// BindInviter 用户绑定邀请人
// @Summary 用户绑定邀请人
// @Description 未绑定过邀请人的用户可主动填写邀请码绑定邀请人（绑定后不可更改）
// @Tags APP端.用户
// @Accept json
// @Produce json
// @Param body body bindInviterRequest true "邀请码"
// @Success 200 {object} bindInviterResponse
// @Failure 400 {object} code.Failure
// @Router /api/app/users/inviter/bind [post]
// @Security LoginVerifyToken
func (h *handler) BindInviter() core.HandlerFunc {
	return func(ctx core.Context) {
		req := new(bindInviterRequest)
		if err := ctx.ShouldBindJSON(req); err != nil {
			ctx.AbortWithError(core.Error(http.StatusBadRequest, code.ParamBindError, validation.Error(err)))
			return
		}

		userID := int64(ctx.SessionUserInfo().Id)

		result, err := h.user.BindInviter(ctx.RequestContext(), userID, usersvc.BindInviterInput{
			InviteCode: req.InviteCode,
		})
		if err != nil {
			switch err {
			case usersvc.ErrAlreadyBound:
				ctx.AbortWithError(core.Error(http.StatusBadRequest, 10100, "您已绑定过邀请人，无法重复绑定"))
			case usersvc.ErrInvalidCode:
				ctx.AbortWithError(core.Error(http.StatusBadRequest, 10101, "邀请码不存在"))
			case usersvc.ErrCannotInviteSelf:
				ctx.AbortWithError(core.Error(http.StatusBadRequest, 10102, "不能邀请自己"))
			default:
				ctx.AbortWithError(core.Error(http.StatusInternalServerError, 10103, err.Error()))
			}
			return
		}

		// 触发任务中心的邀请成功逻辑（给邀请人发放奖励）
		if result.InviterID > 0 {
			if err := h.task.OnInviteSuccess(ctx.RequestContext(), result.InviterID, userID); err != nil {
				h.logger.Error("触发邀请任务失败", zap.Error(err), zap.Int64("inviter_id", result.InviterID), zap.Int64("invitee_id", userID))
			}
		}

		ctx.Payload(&bindInviterResponse{
			InviterID:       result.InviterID,
			InviterNickname: result.InviterNickname,
		})
	}
}