package handler

import (
	"net/http"

	"gen2d/internal/model"
	"gen2d/internal/service"

	"github.com/gin-gonic/gin"
)

var authSvc *service.AuthService

// InitAuthService 由 main 在启动时调用，注入 JWT 配置。
func InitAuthService(jwtSecret string, jwtExpire int64) {
	authSvc = service.NewAuthService(jwtSecret, jwtExpire)
}

// RegisterRequest 注册请求参数。
type RegisterRequest struct {
	Username string `json:"username" binding:"required,min=3,max=32"`
	Password string `json:"password" binding:"required,min=6,max=64"`
	Email    string `json:"email" binding:"omitempty,email"`
}

// RegisterResponse 注册成功返回的用户信息。
type RegisterResponse struct {
	ID       uint   `json:"id"`
	Username string `json:"username"`
}

// Register 用户注册接口，创建新用户账号。
func Register(c *gin.Context) {
	var req RegisterRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, model.Fail(http.StatusBadRequest, "参数错误: "+err.Error()))
		return
	}

	user, err := authSvc.Register(c.Request.Context(), req.Username, req.Password, req.Email)
	if err != nil {
		c.JSON(http.StatusConflict, model.Fail(http.StatusConflict, err.Error()))
		return
	}

	c.JSON(http.StatusCreated, model.OK(RegisterResponse{
		ID:       user.ID,
		Username: user.Username,
	}))
}