bricklaying-a-rotunda/index.html at main · lawrencerowland/bricklaying-a-rotunda · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>App Index</title>
    <link rel="stylesheet" href="styles.css" />
  </head>
  <body>
    <main class="container">
      <header class="hero">
        <div>
          <p class="eyebrow">Home</p>
          <h1>App Index</h1>
          <p class="subtitle">
            Browse the apps below. Data is loaded directly from the
            <code>app_index.csv</code> file.
          </p>
        </div>
        <div class="controls">
          <label class="search">
            <span>Search</span>
            <div class="search-input">
              <input
                type="search"
                id="search"
                placeholder="Filter by name, tags, or description"
              />
              <button type="button" class="clear" id="clear-search">Clear</button>
            </div>
          </label>
          <label class="sort">
            <span>Sort by</span>
            <select id="sort">
              <option value="index">Index</option>
              <option value="name">Name</option>
            </select>
          </label>
        </div>
      </header>

      <section>
        <div class="status" id="status" role="status" aria-live="polite">Loading app index…</div>
        <div class="grid" id="app-grid" hidden></div>
      </section>
    </main>

    <template id="card-template">
      <article class="card">
        <div class="card-head">
          <span class="index"></span>
          <h2 class="name"></h2>
        </div>
        <p class="description"></p>
        <div class="tags"></div>
        <a class="link" target="_blank" rel="noreferrer noopener">Visit app</a>
      </article>
    </template>

    <script>
      const statusEl = document.getElementById('status');
      const gridEl = document.getElementById('app-grid');
      const searchEl = document.getElementById('search');
      const clearEl = document.getElementById('clear-search');
      const sortEl = document.getElementById('sort');
      const template = document.getElementById('card-template');

      const parseCsvLine = (line) => {
        const values = [];
        let current = '';
        let inQuotes = false;

        for (let i = 0; i < line.length; i += 1) {
          const char = line[i];
          if (char === '"') {
            if (inQuotes && line[i + 1] === '"') {
              current += '"';
              i += 1;
            } else {
              inQuotes = !inQuotes;
            }
            continue;
          }

          if (char === ',' && !inQuotes) {
            values.push(current);
            current = '';
            continue;
          }

          current += char;
        }

        values.push(current);
        return values.map((value) => value.trim());
      };

      const parseCsv = (csvText) => {
        const lines = csvText.trim().split(/\r?\n/);
        if (lines.length === 0) return [];
        const headers = parseCsvLine(lines[0]);
        return lines.slice(1).map((line) => {
          const values = parseCsvLine(line);
          return headers.reduce((row, header, index) => {
            row[header] = values[index] ?? '';
            return row;
          }, {});
        });
      };

      const buildCard = (entry) => {
        const clone = template.content.cloneNode(true);
        clone.querySelector('.index').textContent = `#${entry.index}`;
        clone.querySelector('.name').textContent = entry.name;
        clone.querySelector('.description').textContent = entry.description;
        const tagsEl = clone.querySelector('.tags');
        entry.tags
          .split('|')
          .map((tag) => tag.trim())
          .filter(Boolean)
          .forEach((tag) => {
            const span = document.createElement('span');
            span.textContent = tag;
            tagsEl.appendChild(span);
          });
        const linkEl = clone.querySelector('.link');
        linkEl.href = entry.link;
        linkEl.textContent = `Open ${entry.name}`;
        return clone;
      };

      const render = (entries, total) => {
        gridEl.innerHTML = '';
        if (entries.length === 0) {
          statusEl.textContent = total === 0 ? 'No apps are available.' : 'No apps match your search.';
          gridEl.hidden = true;
          return;
        }
        statusEl.textContent = `Showing ${entries.length} of ${total} app${
          total === 1 ? '' : 's'
        }.`;
        gridEl.hidden = false;
        entries.forEach((entry) => {
          gridEl.appendChild(buildCard(entry));
        });
      };

      const loadApps = async () => {
        try {
          const response = await fetch('app_index.csv');
          if (!response.ok) {
            throw new Error('Unable to load app_index.csv');
          }
          const csvText = await response.text();
          const entries = parseCsv(csvText);
          const normalized = entries.map((entry) => ({
            ...entry,
            haystack: `${entry.name} ${entry.description} ${entry.tags}`.toLowerCase(),
          }));

          const update = () => {
            const query = searchEl.value.trim().toLowerCase();
            const filtered = query
              ? normalized.filter((entry) => entry.haystack.includes(query))
              : normalized;
            const sorted = [...filtered].sort((a, b) => {
              if (sortEl.value === 'name') {
                return a.name.localeCompare(b.name);
              }
              return Number(a.index) - Number(b.index);
            });
            clearEl.disabled = query.length === 0;
            render(sorted, normalized.length);
          };

          searchEl.addEventListener('input', update);
          sortEl.addEventListener('change', update);
          clearEl.addEventListener('click', () => {
            searchEl.value = '';
            searchEl.focus();
            update();
          });
          update();
        } catch (error) {
          statusEl.textContent = error.message;
          gridEl.hidden = true;
        }
      };

      loadApps();
    </script>
  </body>
</html>