package handler

import (
	"errors"
	"log"
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/gouki/lunar-server/internal/service"
)

func RequestEmailLoginCode(c *gin.Context) {
	var request struct {
		Email string `json:"email" binding:"required"`
	}
	if err := c.ShouldBindJSON(&request); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "邮箱格式错误"})
		return
	}
	err := service.NewEmailAuthService().RequestCode(request.Email)
	if errors.Is(err, service.ErrInvalidEmail) {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "邮箱格式错误"})
		return
	}
	if errors.Is(err, service.ErrLoginCodeRateLimited) {
		c.JSON(http.StatusTooManyRequests, gin.H{"code": 429, "msg": "请稍后再获取验证码"})
		return
	}
	if err != nil {
		// 保留 service 返回的 provider 错误（含服务商名称与上游状态码），便于生产排障关联
		log.Printf("[EMAIL-AUTH] 验证码发送失败: email=%s err=%v", request.Email, err)
		c.JSON(http.StatusServiceUnavailable, gin.H{"code": 503, "msg": "验证码暂时无法发送"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": 0, "msg": "验证码已发送"})
}

func VerifyEmailLoginCode(c *gin.Context) {
	var request struct {
		Email string `json:"email" binding:"required"`
		Code  string `json:"code" binding:"required"`
	}
	if err := c.ShouldBindJSON(&request); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "参数错误"})
		return
	}
	user, token, err := service.NewEmailAuthService().VerifyCode(request.Email, request.Code)
	if err != nil {
		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "msg": "验证码无效或已过期"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": 0, "msg": "success", "data": gin.H{"token": token, "user": user}})
}