pokemon/src/pages/partials/card-modal.astro

---
import ebay from "/vendors/ebay.svg?raw";
import SetIcon from '../../components/SetIcon.astro';
import EnergyIcon from '../../components/EnergyIcon.astro';
import RarityIcon from '../../components/RarityIcon.astro';
import { db } from '../../db/index';
import { priceHistory, skus } from '../../db/schema';
import { eq, inArray } from 'drizzle-orm';
import FirstEditionIcon from "../../components/FirstEditionIcon.astro";

import { Tooltip } from "bootstrap";

export const partial = true;
export const prerender = false;

const searchParams = Astro.url.searchParams;
const cardId = Number(searchParams.get('cardId')) || 0;

const card = await db.query.cards.findFirst({
    where: { cardId: Number(cardId) },
    with: {
        prices: true,
        set: true,
    }
});

function timeAgo(date: Date | null) {
  if (!date) return "Not applicable";
  const seconds = Math.floor((Date.now() - date.getTime()) / 1000);
  const intervals: Record<string, number> = {
    year: 31536000,
    month: 2592000,
    day: 86400,
    hour: 3600,
    minute: 60
  };
  for (const [unit, value] of Object.entries(intervals)) {
    const count = Math.floor(seconds / value);
    if (count >= 1) return `${count} ${unit}${count > 1 ? "s" : ""} ago`;
  }
  return "just now";
}

const calculatedAt = (() => {
  if (!card?.prices?.length) return null;
  const dates = card.prices
    .map(p => p.calculatedAt)
    .filter(d => d)
    .map(d => new Date(d));
  if (!dates.length) return null;
  return new Date(Math.max(...dates.map(d => d.getTime())));
})();

// ── Fetch price history + compute volatility ──────────────────────────────
const cardSkus = card?.prices?.length
  ? await db.select().from(skus).where(eq(skus.cardId, cardId))
  : [];

const skuIds = cardSkus.map(s => s.skuId);

const historyRows = skuIds.length
  ? await db
      .select({
        skuId: priceHistory.skuId,
        calculatedAt: priceHistory.calculatedAt,
        marketPrice: priceHistory.marketPrice,
        condition: skus.condition,
      })
      .from(priceHistory)
      .innerJoin(skus, eq(priceHistory.skuId, skus.skuId))
      .where(inArray(priceHistory.skuId, skuIds))
      .orderBy(priceHistory.calculatedAt)
  : [];

// Rolling 30-day cutoff for volatility calculation
const thirtyDaysAgo = new Date(Date.now() - 30 * 86_400_000);

const byCondition: Record<string, number[]> = {};
for (const row of historyRows) {
  if (row.marketPrice == null) continue;
  if (!row.calculatedAt) continue;
  if (new Date(row.calculatedAt) < thirtyDaysAgo) continue;
  const price = Number(row.marketPrice);
  if (price <= 0) continue;
  if (!byCondition[row.condition]) byCondition[row.condition] = [];
  byCondition[row.condition].push(price);
}

function computeVolatility(prices: number[]): { label: string; monthlyVol: number } {
  if (prices.length < 2) return { label: '—', monthlyVol: 0 };
  const returns: number[] = [];
  for (let i = 1; i < prices.length; i++) {
    returns.push(Math.log(prices[i] / prices[i - 1]));
  }
  const mean = returns.reduce((a, b) => a + b, 0) / returns.length;
  const variance = returns.reduce((sum, r) => sum + (r - mean) ** 2, 0) / (returns.length - 1);
  const monthlyVol = Math.sqrt(variance) * Math.sqrt(30);
  const label = monthlyVol >= 0.30 ? 'High'
              : monthlyVol >= 0.15 ? 'Medium'
              : 'Low';
  return { label, monthlyVol: Math.round(monthlyVol * 100) / 100 };
}

const volatilityByCondition: Record<string, { label: string; monthlyVol: number }> = {};
for (const [condition, prices] of Object.entries(byCondition)) {
  volatilityByCondition[condition] = computeVolatility(prices);
}

// ── Price history for chart (full history, not windowed) ──────────────────
const priceHistoryForChart = historyRows.map(row => ({
  condition: row.condition,
  calculatedAt: row.calculatedAt
    ? new Date(row.calculatedAt).toISOString().split('T')[0]
    : null,
  marketPrice: row.marketPrice,
})).filter(r => r.calculatedAt !== null);

// ── Determine which range buttons to show ────────────────────────────────
const now = Date.now();
const oldestDate = historyRows.length
  ? Math.min(...historyRows
      .filter(r => r.calculatedAt)
      .map(r => new Date(r.calculatedAt!).getTime()))
  : now;

const dataSpanDays = (now - oldestDate) / 86_400_000;

const showRanges = {
  '1m':  dataSpanDays >= 1,
  '3m':  dataSpanDays >= 60,
  '6m':  dataSpanDays >= 180,
  '1y':  dataSpanDays >= 365,
  'all': dataSpanDays >= 400,
};

const conditionOrder = ["Near Mint", "Lightly Played", "Moderately Played", "Heavily Played", "Damaged"];

const conditionAttributes = (price: any) => {
  const condition: string = price?.condition || "Near Mint";
  const vol = volatilityByCondition[condition] ?? { label: '—', monthlyVol: 0 };

  const volatilityClass = (() => {
    switch (vol.label) {
      case "High":   return "alert-danger";
      case "Medium": return "alert-warning";
      case "Low":    return "alert-success";
      default:       return "alert-dark";
    }
  })();

  const volatilityDisplay = vol.label === '—'
    ? '—'
    : `${vol.label} (${(vol.monthlyVol * 100).toFixed(0)}%)`;

  return {
    "Near Mint":        { label: "nav-nm",  volatility: volatilityDisplay, volatilityClass, class: "show active" },
    "Lightly Played":   { label: "nav-lp",  volatility: volatilityDisplay, volatilityClass },
    "Moderately Played":{ label: "nav-mp",  volatility: volatilityDisplay, volatilityClass },
    "Heavily Played":   { label: "nav-hp",  volatility: volatilityDisplay, volatilityClass },
    "Damaged":          { label: "nav-dmg", volatility: volatilityDisplay, volatilityClass }
  }[condition];
};

const ebaySearchUrl = (card: any) => {
  return `https://www.ebay.com/sch/i.html?_nkw=${encodeURIComponent(card?.productUrlName)}+${encodeURIComponent(card?.set?.setUrlName)}+${encodeURIComponent(card?.number)}&LH_Sold=1&Graded=No&_dcat=183454`;
};

const altSearchUrl = (card: any) => {
  return `https://alt.xyz/browse?query=${encodeURIComponent(card?.productUrlName)}+${encodeURIComponent(card?.set?.setUrlName)}+${encodeURIComponent(card?.number)}&sortBy=newest_first`;
};
---

  <div class="modal-dialog modal-dialog-centered modal-fullscreen-md-down modal-xl">
    <div class="modal-content" data-card-id={card?.cardId}>
      <div class="modal-header border-0">
        <div class="container-fluid row align-items-center">
          <div class="h4 card-title pe-2 col-sm-12 col-md-auto mb-sm-1">{card?.productName}</div>
          <div class="text-secondary col-auto">{card?.number}</div>
          <div class="text-light col-auto">{card?.variant}</div>
        </div>
        <div class="d-flex gap-2 align-items-center">
          <button type="button" class="btn-close" aria-label="Close" data-bs-dismiss="modal"></button>
        </div>
      </div>
      <div class="modal-body pt-0">
        <div class="container-fluid">
          <div class="card mb-2 border-0">
            <div class="row g-4">

              <!-- Card image column -->
              <div class="col-sm-12 col-md-3">
                <div class="position-relative mt-1">

                  <!-- card-image-wrap gives the modal image shimmer effects
                       without the hover lift/scale that image-grow has in main.scss -->
                  <div
                    class="card-image-wrap rounded-4"
                    data-energy={card?.energyType}
                    data-rarity={card?.rarityName}
                    data-variant={card?.variant}
                    data-name={card?.productName}
                  >
                    <img
                      src={`/cards/${card?.productId}.jpg`}
                      class="card-image w-100 img-fluid rounded-4"
                      alt={card?.productName}
                      crossorigin="anonymous"
                      onerror="this.onerror=null; this.src='/cards/default.jpg'; this.closest('.image-grow, .card-image-wrap')?.setAttribute('data-default','true')"
                      onclick="copyImage(this); dataLayer.push({'event': 'copiedImage'});"
                    />
                  </div>

                  <span class="position-absolute top-50 start-0 d-inline"><FirstEditionIcon edition={card?.variant} /></span>
                  <span class="position-absolute bottom-0 start-0 d-inline"><SetIcon set={card?.set?.setCode} /></span>
                  <span class="position-absolute top-0 end-0 d-inline"><EnergyIcon energy={card?.energyType} /></span>
                  <span class="rarity-icon-large position-absolute bottom-0 end-0 d-inline"><RarityIcon rarity={card?.rarityName} /></span>
                </div>
                <div class="d-flex flex-column flex-lg-row justify-content-between mt-2">
                  <div class="text-secondary">{card?.set?.setCode}</div>
                  <div class="text-secondary">Illus<span class="d-none d-lg-inline">trator</span>: {card?.artist}</div>
                </div>
              </div>

              <!-- Tabs + price data column -->
              <div class="col-sm-12 col-md-7">
                <ul class="nav nav-tabs nav-fill border-0 me-3 mb-2" id="myTab" role="tablist">
                  <li class="nav-item" role="presentation">
                    <button class="nav-link nm active" id="nm-tab" data-bs-toggle="tab" data-bs-target="#nav-nm" type="button" role="tab" aria-controls="nav-nm" aria-selected="true">
                      <span class="d-none d-xxl-inline">Near Mint</span><span class="d-xxl-none">NM</span>
                    </button>
                  </li>
                  <li class="nav-item" role="presentation">
                    <button class="nav-link lp" id="lp-tab" data-bs-toggle="tab" data-bs-target="#nav-lp" type="button" role="tab" aria-controls="nav-lp" aria-selected="false">
                      <span class="d-none d-xxl-inline">Lightly Played</span><span class="d-xxl-none">LP</span>
                    </button>
                  </li>
                  <li class="nav-item" role="presentation">
                    <button class="nav-link mp" id="mp-tab" data-bs-toggle="tab" data-bs-target="#nav-mp" type="button" role="tab" aria-controls="nav-mp" aria-selected="false">
                      <span class="d-none d-xxl-inline">Moderately Played</span><span class="d-xxl-none">MP</span>
                    </button>
                  </li>
                  <li class="nav-item" role="presentation">
                    <button class="nav-link hp" id="hp-tab" data-bs-toggle="tab" data-bs-target="#nav-hp" type="button" role="tab" aria-controls="nav-hp" aria-selected="false">
                      <span class="d-none d-xxl-inline">Heavily Played</span><span class="d-xxl-none">HP</span>
                    </button>
                  </li>
                  <li class="nav-item" role="presentation">
                    <button class="nav-link dmg" id="dmg-tab" data-bs-toggle="tab" data-bs-target="#nav-dmg" type="button" role="tab" aria-controls="nav-dmg" aria-selected="false">
                      <span class="d-none d-xxl-inline">Damaged</span><span class="d-xxl-none">DMG</span>
                    </button>
                  </li>
                  <li class="nav-item" role="presentation">
                    <button class="nav-link vendor d-none" id="vendor-tab" data-bs-toggle="tab" data-bs-target="#nav-vendor" type="button" role="tab" aria-controls="nav-vendor" aria-selected="false">
                      <span class="d-none d-xxl-inline">Inventory</span><span class="d-xxl-none">+/-</span>
                    </button>
                  </li>
                </ul>

                <div class="tab-content" id="myTabContent">
                  {card?.prices.slice().sort((a, b) => conditionOrder.indexOf(a.condition) - conditionOrder.indexOf(b.condition)).map((price) => {
                    const attributes = conditionAttributes(price);
                    return (
                      <div class={`tab-pane fade ${attributes?.label} ${attributes?.class ?? ''}`} id={`${attributes?.label}`} role="tabpanel" tabindex="0">
                        <div class="d-flex flex-column gap-1">

                          <!-- Stat cards -->
                          <div class="d-flex flex-fill flex-row gap-1">
                            <div class="alert alert-dark rounded p-2 flex-fill d-flex flex-column mb-0">
                              <h6 class="mb-auto">Market Price</h6>
                              <p class="mb-0 mt-1">${price.marketPrice}</p>
                            </div>
                            <div class="alert alert-dark rounded p-2 flex-fill d-flex flex-column mb-0">
                              <h6 class="mb-auto">Lowest Price</h6>
                              <p class="mb-0 mt-1">${price.lowestPrice}</p>
                            </div>
                            <div class="alert alert-dark rounded p-2 flex-fill d-flex flex-column mb-0">
                              <h6 class="mb-auto">Highest Price</h6>
                              <p class="mb-0 mt-1">${price.highestPrice}</p>
                            </div>
                            <div class={`alert rounded p-2 flex-fill d-flex flex-column mb-0 ${attributes?.volatilityClass}`}>
                              <h6 class="mb-auto d-flex justify-content-between align-items-start">
                                <span class="me-1">Volatility</span>
                                <span
                                  class="volatility-info float-end mt-0"
                                  data-bs-toggle="tooltip"
                                  data-bs-placement="top"
                                  data-bs-container="body"
                                  data-bs-custom-class="volatility-popover"
                                  data-bs-trigger="hover focus click"
                                  data-bs-html="true"
                                  data-bs-title={`
                                    <div class='tooltip-heading fw-bold mb-1'>Monthly Volatility</div>
                                    <div class='small'>
                                      <p class="mb-1">
                                        <strong>What this measures:</strong> how much the market price tends to move day-to-day,
                                        scaled up to a monthly expectation.
                                      </p>
                                      <p class="mb-0">
                                        A card with <strong>30% volatility</strong> typically swings ±30% over a month.
                                      </p>
                                    </div>
                                  `}
                                >
                                <svg xmlns="http://www.w3.org/2000/svg" width="13" height="13" fill="currentColor" viewBox="0 0 16 16"> <path d="M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z"/> <path d="m8.93 6.588-2.29.287-.082.38.45.083c.294.07.352.176.288.469l-.738 3.468c-.194.897.105 1.319.808 1.319.545 0 1.178-.252 1.465-.598l.088-.416c-.2.176-.492.246-.686.246-.275 0-.375-.193-.304-.533L8.93 6.588zM9 4.5a1 1 0 1 1-2 0 1 1 0 0 1 2 0z"/> </svg>
                                </span>
                              </h6>
                              <p class="mb-0 mt-1">{attributes?.volatility}</p>
                            </div>
                          </div>

                          <!-- Table only — chart is outside the tab panes -->
                          <div class="w-100">
                            <div class="alert alert-dark rounded p-2 mb-0 table-responsive">
                              <h6>Latest Verified Sales</h6>
                              <table class="table table-sm mb-0">
                                <caption class="small">Filtered to remove mismatched language variants</caption>
                                <thead class="table-dark">
                                  <tr>
                                    <th scope="col">Date</th>
                                    <th scope="col">Title</th>
                                    <th scope="col">Price</th>
                                  </tr>
                                </thead>
                                <tbody>
                                  <tr><td> </td><td> </td><td> </td></tr>
                                  <tr><td> </td><td> </td><td> </td></tr>
                                  <tr><td> </td><td> </td><td> </td></tr>
                                  <tr><td> </td><td> </td><td> </td></tr>
                                  <tr><td> </td><td> </td><td> </td></tr>
                                </tbody>
                              </table>
                            </div>
                          </div>

                        </div>
                      </div>
                    );
                  })}

                  <div class="tab-pane fade" id="nav-vendor" role="tabpanel" aria-labelledby="nav-vendor" tabindex="0"></div>
                </div>

                <!-- Chart lives permanently outside tab-content so Bootstrap never hides it. -->
                <div class="d-block d-lg-flex gap-1 mt-1">
                  <div class="col-12">
                    <div class="alert alert-dark rounded p-2 mb-0">
                      <h6>Market Price History</h6>
                      <div id="priceHistoryEmpty" class="d-none text-secondary text-center py-4">
                        No sales data for the selected period/condition
                      </div>
                      <div class="position-relative" style="height: 200px;">
                        <canvas
                          id="priceHistoryChart"
                          class="price-history-chart"
                          data-card-id={card?.cardId}
                          data-history={JSON.stringify(priceHistoryForChart)}>
                        </canvas>
                      </div>
                      <div class="btn-group btn-group-sm d-flex flex-row gap-1 justify-content-end mt-2" role="group" aria-label="Time range">
                        {showRanges['1m']  && <button type="button" class="btn btn-dark price-range-btn active" data-range="1m">1M</button>}
                        {showRanges['3m']  && <button type="button" class="btn btn-dark price-range-btn" data-range="3m">3M</button>}
                        {showRanges['6m']  && <button type="button" class="btn btn-dark price-range-btn" data-range="6m">6M</button>}
                        {showRanges['1y']  && <button type="button" class="btn btn-dark price-range-btn" data-range="1y">1Y</button>}
                        {showRanges['all'] && <button type="button" class="btn btn-dark price-range-btn" data-range="all">All</button>}
                      </div>
                    </div>
                  </div>
                </div>

              </div>

              <!-- External links column -->
              <div class="col-sm-12 col-md-2 mt-0 mt-md-5 d-flex flex-row flex-md-column">
                <a class="btn btn-dark mb-2 w-100 p-2" href={`https://www.tcgplayer.com/product/${card?.productId}`} target="_blank" onclick="dataLayer.push({'event': 'tcgplayerClick', 'tcgplayerUrl': this.getAttribute('href')});"><img src="/vendors/tcgplayer.webp"> <span class="d-none d-lg-inline">TCGPlayer</span></a>
                <a class="btn btn-dark mb-2 w-100 p-2" href={`${ebaySearchUrl(card)}`} target="_blank" onclick="dataLayer.push({'event': 'ebayClick', 'ebayUrl': this.getAttribute('href')});"><span set:html={ebay} /></a>
                <a class="btn btn-dark mb-2 w-100 p-2" href={`${altSearchUrl(card)}`} target="_blank" onclick="dataLayer.push({'event': 'altClick', 'altUrl': this.getAttribute('href')});"><svg width="48" height="20.16" viewBox="0 0 48 20" fill="none"><path d="M14.2761 19.9996H18.5308L11.6934 0.0712891H7.76953L14.2761 19.9996Z" fill="#ffffff"></path><path d="M6.17778 19.9986H6.14536L3.19643 11.2305L0 19.9988L6.17768 19.9989L6.17778 19.9986Z" fill="#ffffff"></path><path d="M24.7842 0H20.6759V19.9661H34.3427V16.5426H24.7842V0Z" fill="#ffffff"></path><path d="M41.6644 3.42355H47.4981V0H31.5033V3.42355H37.5561V19.9661H41.6644V3.42355Z" fill="#ffffff"></path></svg></a>
              </div>

            </div>
            <div class="text-end my-0"><small class="text-body-tertiary">Prices last changed: {timeAgo(calculatedAt)}</small></div>
          </div>
        </div>
      </div>
    </div>
  </div>