package handler

import (
	"cloudnest/internal/application/captcha"
	"cloudnest/internal/application/email"
	"cloudnest/internal/pkg/response"
	"github.com/gin-gonic/gin"
)

// EmailHandler handles HTTP requests for email verification code operations.
// EmailHandler 处理邮箱验证码操作的 HTTP 请求。
type EmailHandler struct {
	emailService   *email.EmailService
	captchaService *captcha.CaptchaService
}

// NewEmailHandler creates a new EmailHandler.
// NewEmailHandler 创建一个新的 EmailHandler。
func NewEmailHandler(emailService *email.EmailService, captchaService *captcha.CaptchaService) *EmailHandler {
	return &EmailHandler{
		emailService:   emailService,
		captchaService: captchaService,
	}
}

// SendEmailCodeRequest represents the request body for sending email verification code.
// SendEmailCodeRequest 表示发送邮箱验证码的请求体。
type SendEmailCodeRequest struct {
	Email         string `json:"email" binding:"required,email"`
	CaptchaID     string `json:"captcha_id" binding:"required"`
	CaptchaAnswer string `json:"captcha_answer" binding:"required"`
}

// SendEmailCode handles POST /api/v1/auth/email-code.
// SendEmailCode 处理 POST /api/v1/auth/email-code。
//
// It first verifies the captcha, then sends the email verification code.
// 先验证图形验证码，通过后才发送邮箱验证码。
func (h *EmailHandler) SendEmailCode(c *gin.Context) {
	var req SendEmailCodeRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.BadRequest(c, "参数错误")
		return
	}

	if !h.captchaService.Verify(req.CaptchaID, req.CaptchaAnswer) {
		response.Error(c, 400, "图形验证码错误")
		return
	}

	_, err := h.emailService.SendVerifyCode(req.Email)
	if err != nil {
		if err.Error() == "邮件服务未配置" {
			response.Error(c, 503, "邮件服务未配置")
			return
		}
		response.InternalError(c, "邮件发送失败")
		return
	}

	response.SuccessMsg(c, "验证码已发送")
}