import { useState, useEffect } from "react"
import { Form, message } from "antd"
import { sendVerificationCode, bindContact, type BindContactResponse } from "@/api/auth"
import { useCountdown } from "./useCountdown"

type ContactType = "email" | "phone"

interface UseBindContactFormOptions {
  open: boolean
  onSuccess?: (user: BindContactResponse["user"]) => void
  onCancel?: () => void
}

/**
 * 绑定联系方式表单 Hook
 * 封装表单状态、验证码发送、提交绑定等业务逻辑
 */
export const useBindContactForm = ({ open, onSuccess }: UseBindContactFormOptions) => {
  const [activeTab, setActiveTab] = useState<ContactType>("email")
  const [form] = Form.useForm()
  const [loading, setLoading] = useState(false)
  const [codeLoading, setCodeLoading] = useState(false)
  const { countdown, isRunning, start: startCountdown, reset: resetCountdown } = useCountdown(60)

  /* ── 打开时重置表单 ── */
  useEffect(() => {
    if (open) {
      form.resetFields()
      resetCountdown()
    }
  }, [open, form, resetCountdown])

  /* ── 发送验证码 ── */
  const handleSendCode = async () => {
    try {
      const fieldName = activeTab === "email" ? "email" : "phone"
      const value = form.getFieldValue(fieldName)
      if (!value) {
        message.warning(activeTab === "email" ? "请输入邮箱" : "请输入手机号")
        return
      }
      setCodeLoading(true)
      await sendVerificationCode({
        target: activeTab,
        value,
        purpose: "bind",
      })
      message.success("验证码已发送")
      startCountdown()
    } catch {
      // error handled by interceptor
    } finally {
      setCodeLoading(false)
    }
  }

  /* ── 提交绑定 ── */
  const handleSubmit = async () => {
    // 1. 表单验证（失败时 Ant Design Form 会自动展示错误信息）
    let values
    try {
      values = await form.validateFields()
    } catch {
      return
    }

    // 2. 调用绑定接口
    setLoading(true)
    try {
      const payload =
        activeTab === "email"
          ? { email: values.email, email_code: values.email_code }
          : { phone: values.phone, phone_code: values.phone_code }

      const result = await bindContact(payload)

      message.success("绑定成功")
      onSuccess?.(result.user)
    } catch {
      // API 错误由全局拦截器统一处理提示
    } finally {
      setLoading(false)
    }
  }

  return {
    activeTab,
    setActiveTab,
    form,
    loading,
    codeLoading,
    countdown,
    codeDisabled: isRunning,
    handleSendCode,
    handleSubmit,
  }
}