<template>
  <view class="asset-page asset-theme bmt-page">
    <asset-page-shell title="BMT兑换" />

    <view class="asset-scroll bmt-scroll">
      <view class="hero-card">
        <view class="hero-card__content">
          <view class="hero-card__coin-row">
            <view class="hero-card__coin">
              <image
                class="hero-card__coin-image"
                :src="pageIcon('bmt')"
                mode="aspectFit"
              ></image>
            </view>
            <text class="hero-card__coin-text">BMT</text>
          </view>
          <text class="hero-card__label">可用BMT:</text>
          <text class="hero-card__value asset-number-font">{{ displayBmt }}</text>
        </view>
      </view>

      <view class="panel-card info-card">
        <view class="info-row">
          <view class="info-row__left">
            <image
              class="info-row__icon"
              :src="pageIcon('voucher')"
              mode="aspectFit"
            ></image>
            <text class="info-row__label">我的算力</text>
          </view>
          <text class="info-row__value asset-number-font">{{ displayVoucher }}</text>
        </view>

        <view class="info-row">
          <view class="info-row__left">
            <image
              class="info-row__icon"
              :src="pageIcon('coupon')"
              mode="aspectFit"
            ></image>
            <text class="info-row__label">可用积分</text>
          </view>
          <text class="info-row__value asset-number-font">{{ displayCoupon }}</text>
        </view>

        <view class="info-row info-row--last">
          <view class="info-row__left">
            <image
              class="info-row__icon"
              src="https://imgs.agrimedia.cn/bm-bmt/b.png"
              mode="aspectFit"
            ></image>
            <text class="info-row__label">BMT实时价格</text>
          </view>
          <view class="info-row__price">
            <text class="info-row__value asset-number-font">{{ displayPrice }}</text>
            <text class="info-row__unit">BMT/CNY</text>
          </view>
        </view>

        <view class="info-card__estimate">
          <text>全部兑换预估可得</text>
          <text class="info-card__estimate-value asset-number-font">{{ allEstimateBmt }}</text>
          <text>BMT</text>
        </view>
      </view>

      <view class="panel-card form-card">
        <view class="form-card__title">
          <image
            class="form-card__title-icon"
            src="https://imgs.agrimedia.cn/bm-bmt/b.png"
            mode="aspectFit"
          ></image>
          <text class="form-card__title-text">BMT兑换</text>
        </view>

        <view class="form-input">
          <input
            v-model="form.points"
            class="form-input__field asset-number-font"
            type="number"
            placeholder="请输入积分数量"
            placeholder-class="form-input__placeholder"
          />
          <text class="form-input__suffix">可用积分</text>
        </view>

        <view class="preview-card">
          <view class="preview-card__row">
            <view class="preview-card__left">
              <text class="preview-card__label">预估兑换BMT</text>
            </view>
            <text class="preview-card__value asset-number-font">{{ estimateBmt }}</text>
          </view>
          <view class="preview-card__row">
            <view class="preview-card__left">
              <text class="preview-card__label" style="color: #fff"
                >消耗算力</text
              >
            </view>
            <text class="preview-card__value preview-card__value--light asset-number-font">{{
              powerCost
            }}</text>
          </view>
        </view>

        <view class="tips-block">
          <text class="tips-block__title">兑换说明：</text>
          <view
            v-for="(tip, index) in normalizedTips"
            :key="tip"
            class="tips-block__item"
          >
            <text class="tips-block__index asset-number-font">{{ index + 1 }}.</text>
            <text class="tips-block__text asset-number-font">{{ tip }}</text>
          </view>
        </view>
      </view>

      <view class="action-wrap">
        <view class="action-button" @click="confirmVisible = true"
          >确认兑换</view
        >
        <view class="action-link" @click="openLedger">兑换记录</view>
      </view>
    </view>

    <asset-confirm-popup
      :visible="confirmVisible"
      title="兑换提示"
      :message="
        '确认使用 ' + formatAmount(pointsValue, 0) + ' 积分兑换 BMT 吗？'
      "
      @cancel="confirmVisible = false"
      @confirm="submit"
    >
	<view class="popup-line">
	  <text class="meta-pair__label">预估兑换BMT：</text>
	  <text class="meta-pair__value asset-number-font">{{ estimateBmt }}</text>
	</view>
      <view class="popup-line">
        <text class="meta-pair__label">消耗可用积分：</text>
        <text class="meta-pair__value asset-number-font">{{ formatAmount(pointsValue, 0) }}</text>
      </view>
      <view class="popup-line">
        <text class="meta-pair__label">消耗算力：</text>
        <text class="meta-pair__value asset-number-font">{{ powerCost }}</text>
      </view>
    </asset-confirm-popup>
  </view>
</template>

<script>
import AssetConfirmPopup from "../../components/asset-confirm-popup.vue";
import AssetPageShell from "../../components/asset-page-shell.vue";
import {
  fetchBmtExchangeDetail,
  submitAssetBmtExchange,
} from "../../api/assets";

export default {
  components: {
    AssetConfirmPopup,
    AssetPageShell,
  },
  data() {
    return {
      detail: {
        ticker: {},
        balances: {},
        tips: [],
      },
      hasShown: false,
      form: {
        points: "",
      },
      confirmVisible: false,
      submitting: false,
    };
  },
  onLoad() {
    this.loadPage(true);
  },
  onShow() {
    if (this.hasShown) {
      this.loadPage();
      return;
    }

    this.hasShown = true;
  },
  computed: {
    pointsValue() {
      return Number(this.form.points || 0);
    },
    powerRateNumber() {
      return Number(this.detail.powerRate || 0);
    },
    estimateBmt() {
      if (!this.pointsValue) {
        return "0";
      }
      const price = this.priceNumber;
      if (!price) {
        return "0";
      }

      return this.formatAmount(this.pointsValue / price, 2);
    },
    powerCost() {
      if (!this.pointsValue || !this.powerRateNumber) {
        return "0.00";
      }

      return (this.pointsValue * this.powerRateNumber).toFixed(2);
    },
    allEstimateBmt() {
      const points = Number(this.detail.balances.points || 0);
      const compute = Number(this.detail.balances.power || 0);
      const price = this.priceNumber;

      if (!price) {
        return "0";
      }
      const estimatedBmt = Math.min(points, compute * 10) / price;
      return this.formatAmount(Math.max(0, estimatedBmt), 2);
    },
    priceNumber() {
      return Number(
        this.detail.ticker.close || 0,
      );
    },
    displayBmt() {
      return this.detail.balances.bmt;
    },
    displayVoucher() {
      return this.detail.balances.power;
    },
    displayCoupon() {
      return this.detail.balances.points;
    },
    displayPrice() {
      return this.priceNumber ? this.priceNumber : "0.00";
    },
    normalizedTips() {
      if (this.detail.tips && this.detail.tips.length) {
        return this.detail.tips;
      }

      return [
        "1.BMT=积分-BMT实时价格；",
        "2.只能兑换100的整数倍，小于100积分不可兑换；",
        "3.凌晨0点-凌晨1点积分系统维护不可兑换；",
        "4.可用积分不足，可以将释放中的积分转换成可用积分0。",
      ];
    },
  },
  methods: {
    pageIcon(type) {
      const iconMap = {
        power: "https://imgs.agrimedia.cn/bm-bmt/s.png",
        bmt: "https://imgs.agrimedia.cn/bm-bmt/b-w.png",
        transfer: "https://imgs.agrimedia.cn/bm-bmt/z.png",
        withdraw: "https://imgs.agrimedia.cn/bm-bmt/t.png",
        voucher: "https://imgs.agrimedia.cn/bm-bmt/quan-icon-g%20%281%29.png",
        points: "https://imgs.agrimedia.cn/bm-bmt/j.png",
        coupon: "https://imgs.agrimedia.cn/bm-bmt/xiaofei-icon-o.png",
      };
      return iconMap[type] || "";
    },
    formatAmount(value, digits) {
      const number = Number(value || 0);
      if (!Number.isFinite(number)) {
        return digits > 0 ? Number(0).toFixed(digits) : "0";
      }

      if (digits > 0) {
        const fixed = number.toFixed(digits);
        const parts = fixed.split(".");
        parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",");
        return parts.join(".");
      }

      return Math.floor(number)
        .toString()
        .replace(/\B(?=(\d{3})+(?!\d))/g, ",");
    },
    async loadPage(showLoading) {
      try {
        this.detail = await fetchBmtExchangeDetail(
          showLoading
            ? {
                showLoading: true,
                loadingText: "加载中",
              }
            : null,
        );
      } catch (error) {
        uni.showToast({
          title: error.message || "页面加载失败",
          icon: "none",
        });
      }
    },
    async submit() {
      if (this.submitting) {
        return;
      }

      if (!this.pointsValue) {
        uni.showToast({
          title: "请输入积分数量",
          icon: "none",
        });
        return;
      }

      if (this.pointsValue < 100) {
        uni.showToast({
          title: "小于100积分不可兑换",
          icon: "none",
        });
        return;
      }

      if (this.pointsValue % 100 !== 0) {
        uni.showToast({
          title: "只能兑换100的整数倍",
          icon: "none",
        });
        return;
      }

      if (this.pointsValue > Number(this.detail.balances.points || 0)) {
        uni.showToast({
          title: "可用积分不足",
          icon: "none",
        });
        return;
      }

      if (Number(this.powerCost) > Number(this.detail.balances.power || 0)) {
        uni.showToast({
          title: "可用算力不足",
          icon: "none",
        });
        return;
      }

      this.submitting = true;

      try {
        await submitAssetBmtExchange({
          amount: this.pointsValue,
        }, {
          showLoading: true,
          loadingText: "兑换中",
        });
        this.confirmVisible = false;
        this.form.points = "";
        uni.showToast({
          title: "兑换成功",
          icon: "none",
        });
        this.loadPage();
      } catch (error) {
        uni.showToast({
          title: error.message || "兑换失败",
          icon: "none",
        });
      } finally {
        this.submitting = false;
      }
    },
    openLedger() {
      uni.navigateTo({
        url: "/pages/assets/ledger?type=bmt",
      });
    },
  },
};
</script>

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

.bmt-page {
  min-height: 100vh;
  background: #191e32;
}

.bmt-scroll {
  padding: 8rpx 20rpx;
}

.panel-card,
.hero-card {
  border-radius: 12rpx;
  background: #20263e;
}

.hero-card {
  position: relative;
  min-height: 240rpx;
  padding: 24rpx 28rpx;
  overflow: hidden;
  background: #20263e url("https://imgs.agrimedia.cn/bm-bmt/bmt2-header.png")
    no-repeat center top / 100% 240rpx;
}

.hero-card__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
}

.hero-card__coin-row {
  display: flex;
  align-items: center;
}

.hero-card__coin {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56rpx;
  height: 56rpx;
  border-radius: 50%;
  background: linear-gradient(135deg, #18c5ff 0%, #1496ff 100%);
}

.hero-card__coin-image {
  width: 30rpx;
  height: 30rpx;
}

.hero-card__coin-text {
  margin-left: 16rpx;
  font-size: 32rpx;
  font-weight: 500;
  color: #ffffff;
}

.hero-card__label {
  margin-top: 34rpx;
  font-size: 28rpx;
  color: #9ba7ce;
}

.hero-card__value {
  margin-top: 8rpx;
  font-size: 48rpx;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
}

.panel-card {
  margin-top: 18rpx;
  padding: 0 26rpx;
}

.info-card {
  padding-top: 2rpx;
  padding-bottom: 14rpx;
}

.info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 96rpx;
  border-bottom: 1rpx solid #4e5a82;
}

.info-row--last {
  border-bottom: 1rpx solid #4e5a82;
}

.info-row__left {
  display: flex;
  align-items: center;
  min-width: 0;
}

.info-row__icon {
  width: 34rpx;
  height: 34rpx;
  flex-shrink: 0;
}

.info-row__label {
  margin-left: 20rpx;
  font-size: 28rpx;
  font-weight: 400;
  color: #eef2ff;
}

.info-row__value {
  font-size: 32rpx;
  font-weight: 700;
  color: #ffffff;
}

.info-row__price {
  display: flex;
  align-items: baseline;
}

.info-row__unit {
  margin-left: 10rpx;
  font-size: 22rpx;
  color: rgba(184, 193, 218, 0.88);
}

.info-card__estimate {
  display: flex;
  justify-content: flex-end;
  align-items: baseline;
  padding-top: 18rpx;
  font-size: 28rpx;
  color: #1ad296;
}

.info-card__estimate-value {
  margin: 0 10rpx;
  font-size: 32rpx;
  font-weight: 800;
  color: #2fe2a4;
}

.form-card {
  padding-top: 18rpx;
  padding-bottom: 20rpx;
}

.form-card__title {
  display: flex;
  align-items: center;
}

.form-card__title-icon {
  width: 34rpx;
  height: 34rpx;
  flex-shrink: 0;
}

.form-card__title-text {
  margin-left: 14rpx;
  font-size: 28rpx;
  font-weight: 700;
  color: #ffffff;
}

.form-input {
  display: flex;
  align-items: center;
  margin-top: 20rpx;
  padding: 0 20rpx;
  border-radius: 10rpx;
  background: #191e32;
}

.form-input__icon {
  width: 34rpx;
  height: 34rpx;
  margin-right: 18rpx;
  flex-shrink: 0;
}

.form-input__field {
  flex: 1;
  height: 98rpx;
  font-size: 30rpx;
  font-weight: 700;
  color: #ffffff;
}

.form-input__placeholder {
  color: rgba(177, 187, 214, 0.42);
}

.form-input__suffix {
  margin-left: 16rpx;
  font-size: 22rpx;
  font-weight: 600;
  color: #ffffff;
}

.preview-card {
  margin-top: 18rpx;
  padding: 12rpx 26rpx;
  border-radius: 8rpx;
  background: rgba(26, 210, 150, 0.1);
}

.preview-card__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preview-card__row + .preview-card__row {
  margin-top: 8rpx;
}

.preview-card__left {
  display: flex;
  align-items: center;
}

.preview-card__icon {
  width: 30rpx;
  height: 30rpx;
  margin-right: 10rpx;
  flex-shrink: 0;
}

.preview-card__label {
  font-size: 26rpx;
  color: rgba(26, 210, 150, 1);
}

.preview-card__value {
  font-size: 26rpx;
  font-weight: 800;
  color: #1ad296;
}

.preview-card__value--light {
  color: #ffffff;
}

.tips-block {
  margin-top: 24rpx;
}

.tips-block__title {
  display: block;
  font-size: 24rpx;
  color: rgba(190, 197, 219, 0.92);
}

.tips-block__item {
  display: flex;
  margin-top: 10rpx;
}

.tips-block__index,
.tips-block__text {
  font-size: 24rpx;
  color: #929dbf;
  line-height: 44rpx;
  color: rgba(166, 175, 204, 0.92);
}

.tips-block__index {
  margin-right: 6rpx;
}

.tips-block__text {
  flex: 1;
}

.action-wrap {
  padding: 36rpx 22rpx 0;
}

.action-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 88rpx;
  border-radius: 999rpx;
  background: linear-gradient(135deg, #20b6f5 0%, #1ca5e3 100%);
  box-shadow: 0 16rpx 30rpx rgba(20, 119, 214, 0.16);
  font-size: 30rpx;
  font-weight: 700;
  color: #ffffff;
}

.action-link {
  margin-top: 26rpx;
  text-align: center;
  font-weight: 500;
  font-size: 28rpx;
  color: #1fb4ff;
}

.popup-line {
  margin-top: 14rpx;
}
</style>
