50ohm-contents-dl/contents/static/suche.html

<h1>Fragensuche</h1>

<style>
	#question-search-results .breadcrumb,
	#question-search-results .breadcrumb li,
	#question-search-results .breadcrumb-item {
		margin-bottom: 0;
	}
</style>

<div class="card mb-4">
	<div class="card-body">
		<div class="row g-3 align-items-end">
			<div class="col-12 col-md-6 col-lg-4">
				<label for="question-search-input" class="form-label">Suche nach einer Fragennummer:</label>
				<input
					id="question-search-input"
					class="form-control"
					type="text"
					placeholder="VD102"
					autocomplete="off"
					disabled
				>
			</div>
		</div>
		<div id="question-search-error" class="alert alert-danger mt-3 mb-0 d-none" role="alert"></div>
	</div>
</div>

<div id="question-search-results" class="d-none"></div>

<script>
	(() => {
		const searchInput = document.getElementById("question-search-input");
		const errorBox = document.getElementById("question-search-error");
		const resultsBox = document.getElementById("question-search-results");
		let questionIndex = {};

		const targetClassByEdition = {
			N: "N",
			E: "E",
			NE: "E",
			A: "A",
			EA: "A",
			NEA: "A",
		};

		const targetColorByClass = {
			N: "#47ABE8",
			E: "#FE756C",
			A: "#3BB583",
		};

		const editionOrder = ["N", "NE", "NEA", "E", "EA", "A"];

		const editionLabelByEdition = {
			N: "N",
			NE: "N+E",
			NEA: "N+E+A",
			E: "N -> E",
			EA: "N -> A",
			A: "E -> A",
		};

		function escapeHtml(value) {
			return String(value)
				.replaceAll("&", "&amp;")
				.replaceAll("<", "&lt;")
				.replaceAll(">", "&gt;")
				.replaceAll('"', "&quot;")
				.replaceAll("'", "&#39;");
		}

		function normalizeQuery(value) {
			return (value || "").trim().toUpperCase();
		}

		function getTargetClass(edition) {
			return targetClassByEdition[(edition || "").toUpperCase()] || null;
		}

		function getEditionLabel(edition) {
			return editionLabelByEdition[(edition || "").toUpperCase()] || edition;
		}

		function sortEditions(editions) {
			return [...editions].sort((a, b) => {
				const aUpper = (a || "").toUpperCase();
				const bUpper = (b || "").toUpperCase();
				const indexA = editionOrder.indexOf(aUpper);
				const indexB = editionOrder.indexOf(bUpper);

				if (indexA === -1 && indexB === -1) {
					return aUpper.localeCompare(bUpper);
				}
				if (indexA === -1) {
					return 1;
				}
				if (indexB === -1) {
					return -1;
				}

				return indexA - indexB;
			});
		}

		function renderSearchResults() {
			const query = normalizeQuery(searchInput.value);
			const questionIds = Object.keys(questionIndex);

			resultsBox.classList.remove("d-none");

			if (query.length === 0) {
				resultsBox.innerHTML =
					'<div class="alert alert-light border" role="status">Bitte gib eine Frage-ID ein, z. B. <strong>VD102</strong>.</div>';
				return;
			}

			const exactMatches = questionIds.filter((questionId) => questionId === query);
			const startsWithMatches = questionIds.filter((questionId) => questionId.startsWith(query) && questionId !== query);
			const includesMatches = questionIds.filter(
				(questionId) => questionId.includes(query) && !questionId.startsWith(query)
			);

			const matches = [...exactMatches, ...startsWithMatches, ...includesMatches];

			if (matches.length === 0) {
				resultsBox.innerHTML =
					'<div class="alert alert-warning" role="status">Keine passende Frage gefunden.</div>';
				return;
			}

			const cards = matches.map((questionId) => {
				const entry = questionIndex[questionId] || {};
				const sectionIdentRaw = entry.section || "";
				const chapterTitle = escapeHtml(entry.chapter_title || "Unbekanntes Kapitel");
				const sectionTitle = escapeHtml(entry.section_title || entry.section || "Unbekannte Sektion");
				const hasSolution = Boolean(entry.has_solution);
				const editions = sortEditions(Array.isArray(entry.editions) ? entry.editions : []);
				const editionLinks = editions
					.map((edition) => {
						const editionSafe = escapeHtml(edition);
						const editionLabel = escapeHtml(getEditionLabel(edition));
						const targetClass = getTargetClass(edition);
						const targetColor = targetColorByClass[targetClass] || "#6c757d";
						const targetTitle = targetClass ? `Zielklasse ${targetClass}` : "Zielklasse unbekannt";
						const href = `${encodeURIComponent(edition)}_${encodeURIComponent(sectionIdentRaw)}.html#${encodeURIComponent(questionId)}`;
						return `<a class="btn btn-sm text-white text-decoration-none d-inline-flex align-items-center gap-2 px-3 py-2 text-nowrap" style="background-color: ${targetColor}; border-color: ${targetColor};" href="${href}" title="${escapeHtml(targetTitle)}" aria-label="${editionSafe}: ${editionLabel}"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" fill="currentColor" aria-hidden="true" focusable="false" style="width: 0.95rem; height: 0.95rem;"><path d="M96 0C43 0 0 43 0 96L0 416c0 53 43 96 96 96l288 0 32 0c17.7 0 32-14.3 32-32s-14.3-32-32-32l0-64c17.7 0 32-14.3 32-32l0-320c0-17.7-14.3-32-32-32L384 0 96 0zm0 384l256 0 0 64L96 448c-17.7 0-32-14.3-32-32s14.3-32 32-32zm32-240c0-8.8 7.2-16 16-16l192 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-192 0c-8.8 0-16-7.2-16-16zm16 48l192 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-192 0c-8.8 0-16-7.2-16-16s7.2-16 16-16z"></path></svg>${editionLabel}</a>`;
					})
					.join("");
				const solutionLink = hasSolution
					? `<a class="btn btn-sm text-dark d-inline-flex align-items-center gap-2 px-3 py-2 text-nowrap" style="background-color: #ffc107; border-color: #ffc107;" href="${encodeURIComponent(questionId)}.html" aria-label="Lösungsweg zu ${escapeHtml(questionId)}">
						<svg class="solution-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640" fill="currentColor" aria-hidden="true" focusable="false" style="width: 1rem; height: 1rem;">
							<path d="M420.9 448C428.2 425.7 442.8 405.5 459.3 388.1C492 353.7 512 307.2 512 256C512 150 426 64 320 64C214 64 128 150 128 256C128 307.2 148 353.7 180.7 388.1C197.2 405.5 211.9 425.7 219.1 448L420.8 448zM416 496L224 496L224 512C224 556.2 259.8 592 304 592L336 592C380.2 592 416 556.2 416 512L416 496zM312 176C272.2 176 240 208.2 240 248C240 261.3 229.3 272 216 272C202.7 272 192 261.3 192 248C192 181.7 245.7 128 312 128C325.3 128 336 138.7 336 152C336 165.3 325.3 176 312 176z"></path>
						</svg>
						Lösungsweg
					</a>`
					: "";

				return `
					<div class="card mb-3">
						<div class="card-header d-flex flex-nowrap align-items-center gap-2 overflow-auto">
							<div class="fw-semibold">${escapeHtml(questionId)}</div>
							<nav aria-label="breadcrumb" class="mb-0 d-flex align-items-center text-nowrap">
								<ol class="breadcrumb mb-0 align-items-center flex-nowrap">
									<li class="breadcrumb-item">${chapterTitle}</li>
									<li class="breadcrumb-item">${sectionTitle}</li>
								</ol>
							</nav>
						</div>
						<div class="card-body py-3">
							<div class="d-flex flex-wrap align-items-center gap-2">
								${editionLinks || '<span class="badge text-bg-secondary">-</span>'}
								${solutionLink}
							</div>
						</div>
					</div>
				`;
			});

			resultsBox.innerHTML = `
				<p class="text-muted mb-3">${cards.length} Treffer</p>
				${cards.join("")}
			`;
		}

		async function loadQuestionIndex() {
			try {
				const response = await fetch("/assets/question_index.json", {
					cache: "no-cache",
					headers: {
						Accept: "application/json",
					},
				});

				if (!response.ok) {
					throw new Error("HTTP " + response.status);
				}

				const indexData = await response.json();

				questionIndex = indexData || {};

				searchInput.disabled = false;

				searchInput.addEventListener("input", renderSearchResults);
				searchInput.addEventListener("keydown", (event) => {
					if (event.key === "Enter") {
						event.preventDefault();
						renderSearchResults();
					}
				});

				renderSearchResults();
			} catch (error) {
				errorBox.classList.remove("d-none");
				errorBox.textContent =
					"Suchindex konnte nicht geladen werden: " + error.message;
				console.error("Failed to load question_index.json", error);
			}
		}

		loadQuestionIndex();
	})();
</script>