<template>
  <view class="form-wrapper">
    <view class="form-header">
      <uni-icons class="minus" color="#00A6FF" size="22" type="minus" />
      <text class="form-title">{{ title }}</text>
      <uni-icons
        v-if="showDeleteIcon"
        class="delete"
        color="#00A6FF"
        size="22"
        type="trash"
        @click="handleDelete"
      />
    </view>
    <view class="form-item-wrapper">
      <view class="form-item">
        <view class="form-item-row">
          <text class="form-label">姓 名</text>
          <input
            class="form-input"
            :class="{ 'form-input-error': nameError }"
            v-model="nameValue"
            placeholder="请输入姓名"
            @blur="validateName"
          />
        </view>
        <text v-if="nameError" class="form-error">{{ nameError }}</text>
      </view>
      <view class="form-item">
        <view class="form-item-row">
          <text class="form-label">手机号</text>
          <input
            class="form-input"
            :class="{ 'form-input-error': phoneError }"
            v-model="phoneValue"
            placeholder="请输入手机号"
            type="tel"
            maxlength="11"
            @blur="validatePhone"
          />
        </view>
        <text v-if="phoneError" class="form-error">{{ phoneError }}</text>
      </view>
    </view>
  </view>
</template>

<script setup>
import { ref, computed } from "vue";

// 常量定义
const PHONE_REGEX = /^1[3-9]\d{9}$/;
const ERROR_MESSAGES = {
  NAME_REQUIRED: "请输入姓名",
  PHONE_REQUIRED: "手机号不能为空",
  PHONE_INVALID: "请输入正确的手机号",
};

/**
 * FormCard 组件 Props
 * @typedef {Object} FormCardProps
 * @property {string} title - 表单标题
 * @property {Object} form - 表单数据对象
 * @property {string} form.visitorName - 姓名
 * @property {string} form.contactPhone - 手机号
 * @property {boolean} showDeleteIcon - 是否显示删除图标
 */
const props = defineProps({
  title: {
    type: String,
    default: "游客1",
  },
  form: {
    type: Object,
    default: () => ({
      visitorName: "",
      contactPhone: "",
    }),
    validator: (value) => {
      return (
        value &&
        typeof value === "object" &&
        "visitorName" in value &&
        "contactPhone" in value
      );
    },
  },
  showDeleteIcon: {
    type: Boolean,
    default: true,
  },
});

/**
 * FormCard 组件事件
 * @typedef {Object} FormCardEmits
 * @property {Function} update:visitorName - 更新姓名事件
 * @property {Function} update:contactPhone - 更新手机号事件
 * @property {Function} delete - 删除表单事件
 */
const emit = defineEmits([
  "update:visitorName",
  "update:contactPhone",
  "delete",
]);

// 响应式状态
const nameError = ref("");
const phoneError = ref("");

// 计算属性 - 双向绑定
const nameValue = computed({
  get: () => props.form?.visitorName || "",
  set: (value) => emit("update:visitorName", value?.trim() || ""),
});

const phoneValue = computed({
  get: () => props.form?.contactPhone || "",
  set: (value) => {
    // 只允许数字输入
    const numericValue = value.replace(/\D/g, "");
    emit("update:contactPhone", numericValue);
  },
});

// 工具函数
/**
 * 验证姓名是否有效
 * @param {string} name - 姓名
 * @returns {string} 错误信息，空字符串表示验证通过
 */
const getNameError = (name) => {
  if (!name || name.trim() === "") {
    return ERROR_MESSAGES.NAME_REQUIRED;
  }
  return "";
};

/**
 * 验证手机号是否有效
 * @param {string} phone - 手机号
 * @returns {string} 错误信息，空字符串表示验证通过
 */
const getPhoneError = (phone) => {
  if (!phone) {
    return ERROR_MESSAGES.PHONE_REQUIRED;
  }
  if (!PHONE_REGEX.test(phone)) {
    return ERROR_MESSAGES.PHONE_INVALID;
  }
  return "";
};

// 验证方法
const validateName = () => {
  nameError.value = getNameError(props.form?.visitorName);
};

const validatePhone = () => {
  phoneError.value = getPhoneError(props.form?.contactPhone);
};

// 事件处理
const handleDelete = () => {
  emit("delete");
};

// 暴露给模板的方法（用于测试或外部调用）
defineExpose({
  validateName,
  validatePhone,
  getNameError,
  getPhoneError,
});
</script>

<style scoped lang="scss">
@import "./styles/index.scss";
</style>
