<script lang='ts' setup>
import type { GenericObject } from "vee-validate";
import type { FormInstance } from "@/utils";
import { loadingController, toastController } from "@ionic/vue";
import { swapVerticalOutline } from "ionicons/icons";
import { ErrorMessage, Field, Form } from "vee-validate";
import * as yup from "yup";
import { client, safeClient } from "@/api";
import { AssetCodeEnum } from "@/api/enum";
import { getCryptoIcon } from "@/config/crypto";

const { t } = useI18n();
const router = useRouter();
const walletStore = useWalletStore();
const { fundingBalances, tradingBalances } = storeToRefs(walletStore);
const formRef = useTemplateRef<FormInstance>("formRef");

type AccountType = "funding" | "trading";

interface TransferForm {
  assetCode: AssetCodeEnum;
  amount: string;
  fromAccount: AccountType;
  toAccount: AccountType;
}

const initialValues: TransferForm = {
  assetCode: AssetCodeEnum.USDT,
  amount: "",
  fromAccount: "funding",
  toAccount: "trading",
};

// 可用余额
const availableBalance = computed(() => {
  const form = formRef.value?.values as TransferForm | undefined;
  if (!form)
    return "0";

  const balances = form.fromAccount === "funding" ? fundingBalances.value : tradingBalances.value;
  const balance = balances?.find(item => item.assetCode === form.assetCode);
  return balance ? balance.available : "0";
});

// 验证规则
const schema = computed(() => yup.object({
  assetCode: yup.string().required(t("transfer.assetCodeRequired")),
  amount: yup
    .string()
    .required(t("transfer.amountRequired"))
    .test("min", t("transfer.amountMinError"), value => Number(value) > 0)
    .test("max", t("transfer.amountMaxError", { amount: availableBalance.value }), value => Number(value) <= Number(availableBalance.value)),
  fromAccount: yup.string().required(t("transfer.fromAccountRequired")),
  toAccount: yup.string().required(t("transfer.toAccountRequired")),
}));

// 交换账户
function swapAccounts() {
  const form = formRef.value as any;
  if (!form)
    return;

  const currentFrom = form.values.fromAccount;
  const currentTo = form.values.toAccount;

  form.setFieldValue("fromAccount", currentTo);
  form.setFieldValue("toAccount", currentFrom);
}

// 设置全部金额
function setMaxAmount() {
  const form = formRef.value as any;
  if (!form)
    return;

  form.setFieldValue("amount", availableBalance.value);
}

// 提交划转
async function onSubmit(values: GenericObject) {
  const loading = await loadingController.create({
    message: t("transfer.submitting"),
  });
  await loading.present();

  const transferData = values as TransferForm;
  const { error } = await safeClient(() => client.api.account_transfer.post({
    assetCode: transferData.assetCode,
    amount: String(transferData.amount),
    fromAccountType: transferData.fromAccount,
    toAccountType: transferData.toAccount,
  }));

  await loading.dismiss();

  if (!error.value) {
    const toast = await toastController.create({
      message: t("transfer.successMessage"),
      duration: 2000,
      position: "bottom",
      color: "success",
    });

    await toast.present();

    // 刷新余额
    walletStore.syncBalances();

    router.back();
  }
}

// 账户类型显示名称
function getAccountTypeName(type: AccountType) {
  return type === "funding" ? t("transfer.fundingAccount") : t("transfer.tradingAccount");
}
</script>

<template>
  <ion-page>
    <ion-header>
      <ion-toolbar class="ion-toolbar">
        <ion-buttons slot="start">
          <ui-back-button default-href="/wallet/index" />
        </ion-buttons>
        <ion-title>{{ t("transfer.title") }}</ion-title>
      </ion-toolbar>
    </ion-header>

    <ion-content :fullscreen="true" class="ion-padding">
      <Form
        ref="formRef"
        :validation-schema="schema"
        :initial-values="initialValues"
        @submit="onSubmit"
      >
        <div class="flex flex-col gap-5">
          <!-- 币种选择 -->
          <div>
            <Field name="assetCode">
              <template #default="{ field, value }">
                <ion-radio-group v-bind="field" :model-value="value">
                  <ion-label class="block text-sm font-medium mb-3">
                    {{ t("transfer.chooseCurrency") }}
                  </ion-label>
                  <div class="flex gap-3">
                    <ion-item
                      v-for="item in AssetCodeEnum"
                      :key="item"
                      class="flex-1"
                      lines="none"
                    >
                      <ion-radio :value="item">
                        <div class="flex items-center gap-2">
                          <component :is="getCryptoIcon(item)" class="w-6 h-6" />
                          {{ item }}
                        </div>
                      </ion-radio>
                    </ion-item>
                  </div>
                </ion-radio-group>
              </template>
            </Field>
            <ErrorMessage name="assetCode" class="text-red-500 text-xs mt-1" />
          </div>

          <!-- 划转账户 -->
          <div class="relative flex flex-col gap-3">
            <Field name="fromAccount">
              <template #default="{ value }">
                <div class="flex flex-col bg-text-900 rounded-2xl p-3">
                  <span class="text-xs text-text-500">{{ t('transfer.from') }}</span>
                  <div class="pt-2">
                    <span class="text-base font-medium">{{ getAccountTypeName(value) }}</span>
                  </div>
                </div>
              </template>
            </Field>

            <div class="absolute left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2 z-10">
              <ion-button
                fill="solid"
                color="primary"
                class="swap-btn"
                @click="swapAccounts"
              >
                <ion-icon slot="icon-only" :icon="swapVerticalOutline" class="text-xl" />
              </ion-button>
            </div>

            <Field name="toAccount">
              <template #default="{ value }">
                <div class="flex flex-col bg-text-900 rounded-2xl p-3">
                  <span class="text-xs text-text-500">{{ t('transfer.to') }}</span>
                  <div class="pt-2">
                    <span class="text-base font-medium">{{ getAccountTypeName(value) }}</span>
                  </div>
                </div>
              </template>
            </Field>
          </div>

          <!-- 划转数量 -->
          <div>
            <Field name="amount">
              <template #default="{ field }">
                <div class="relative">
                  <ui-input-label
                    v-bind="field"
                    :label="t('transfer.amount')"
                    :placeholder="t('transfer.enterAmount')"
                    type="number"
                    inputmode="decimal"
                  />
                  <ion-button
                    fill="clear"
                    size="small"
                    class="absolute right-0 top-8 text-sm font-semibold"
                    @click="setMaxAmount"
                  >
                    {{ t("transfer.all") }}
                  </ion-button>
                </div>
              </template>
            </Field>
            <ErrorMessage name="amount" class="text-red-500 text-xs mt-1" />
          </div>

          <!-- 可用余额 -->
          <div class="flex items-center gap-2">
            <span class="text-sm text-(--ion-color-medium)">{{ t("transfer.available") }}</span>
            <span class="text-sm font-medium">{{ Number(availableBalance).toFixed(2) }}</span>
          </div>

          <!-- 提交按钮 -->
          <ion-button
            expand="block"
            type="submit"
            shape="round"
            class="mt-4 h-12 font-semibold"
          >
            {{ t("transfer.submit") }}
          </ion-button>
        </div>
      </Form>
    </ion-content>
  </ion-page>
</template>

<style lang="css" scoped>
.swap-btn {
  --border-radius: 100%;
}
</style>
