import React, { useState, useEffect, useRef } from "react"
import { Modal, Tabs, Form, Input, Button, message } from "antd"
import { sendVerificationCode, bindContact, type BindContactResponse } from "@/api/auth"

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

const BindContactModal: React.FC<BindContactModalProps> = ({ open, onSuccess, onCancel }) => {
  const [activeTab, setActiveTab] = useState<"email" | "phone">("email")
  const [form] = Form.useForm()
  const [loading, setLoading] = useState(false)
  const [codeLoading, setCodeLoading] = useState(false)
  const [countdown, setCountdown] = useState(0)
  const timerRef = useRef<ReturnType<typeof setInterval> | null>(null)

  useEffect(() => {
    if (countdown > 0) {
      timerRef.current = setInterval(() => {
        setCountdown((prev) => prev - 1)
      }, 1000)
    } else if (timerRef.current) {
      clearInterval(timerRef.current)
      timerRef.current = null
    }
    return () => {
      if (timerRef.current) clearInterval(timerRef.current)
    }
  }, [countdown])

  useEffect(() => {
    if (open) {
      form.resetFields()
      setCountdown(0)
    }
  }, [open, form])

  const handleSendCode = async () => {
    try {
      const value = form.getFieldValue(activeTab === "email" ? "email" : "phone")
      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")
      setCountdown(60)
    } catch (error) {
      // error handled by interceptor
    } finally {
      setCodeLoading(false)
    }
  }

  const handleSubmit = async () => {
    try {
      const values = await form.validateFields()
      setLoading(true)

      const payload =
        activeTab === "email"
          ? { email: values.email, email_code: values.code }
          : { phone: values.phone, phone_code: values.code }

      const result = await bindContact(payload)

      message.success("绑定成功")
      onSuccess?.(result.user)
    } catch (error) {
      // error handled by interceptor
    } finally {
      setLoading(false)
    }
  }

  return (
    <Modal
      title="绑定联系方式"
      open={open}
      onCancel={onCancel}
      footer={null}
      destroyOnHidden
      maskClosable={false}
    >
      <p style={{ color: "#666", marginBottom: 16 }}>为了保障账号安全，请绑定您的邮箱或手机号</p>

      <Tabs
        activeKey={activeTab}
        onChange={(key) => setActiveTab(key as "email" | "phone")}
        items={[
          {
            key: "email",
            label: "邮箱绑定",
            children: (
              <Form form={form} layout="vertical">
                <Form.Item
                  name="email"
                  label="邮箱"
                  rules={[
                    { required: true, message: "请输入邮箱" },
                    { type: "email", message: "请输入有效的邮箱地址" },
                  ]}
                >
                  <Input placeholder="请输入邮箱地址" size="large" />
                </Form.Item>
                <Form.Item
                  name="code"
                  label="验证码"
                  rules={[{ required: true, message: "请输入验证码" }]}
                >
                  <div style={{ display: "flex", gap: 8 }}>
                    <Input placeholder="请输入验证码" size="large" style={{ flex: 1 }} />
                    <Button
                      size="large"
                      onClick={handleSendCode}
                      loading={codeLoading}
                      disabled={countdown > 0}
                    >
                      {countdown > 0 ? `${countdown}s 后重发` : "发送验证码"}
                    </Button>
                  </div>
                </Form.Item>
              </Form>
            ),
          },
          {
            key: "phone",
            label: "手机绑定",
            children: (
              <Form form={form} layout="vertical">
                <Form.Item
                  name="phone"
                  label="手机号"
                  rules={[
                    { required: true, message: "请输入手机号" },
                    { pattern: /^1[3-9]\d{9}$/, message: "请输入有效的手机号" },
                  ]}
                >
                  <Input placeholder="请输入手机号" size="large" />
                </Form.Item>
                <Form.Item
                  name="code"
                  label="验证码"
                  rules={[{ required: true, message: "请输入验证码" }]}
                >
                  <div style={{ display: "flex", gap: 8 }}>
                    <Input placeholder="请输入验证码" size="large" style={{ flex: 1 }} />
                    <Button
                      size="large"
                      onClick={handleSendCode}
                      loading={codeLoading}
                      disabled={countdown > 0}
                    >
                      {countdown > 0 ? `${countdown}s 后重发` : "发送验证码"}
                    </Button>
                  </div>
                </Form.Item>
              </Form>
            ),
          },
        ]}
      />

      <div style={{ marginTop: 16 }}>
        <Button type="primary" block size="large" loading={loading} onClick={handleSubmit}>
          确认绑定
        </Button>
      </div>
    </Modal>
  )
}

export default BindContactModal