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pingu-concerts/app/templates/new_concert.html
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<!DOCTYPE html>
<html lang="{{ language() }}">
<head>
<meta charset="UTF-8">
<meta
name="viewport"
content="width=device-width, initial-scale=1.0"
>
<title>{{ _('Veranstaltung hinzufügen · MetalCircle') }}</title>
<link rel="icon" type="image/png" href="/static/images/metalcircle-circle.png">
<link
rel="stylesheet"
href="/static/css/style.css"
>
<style>
.flyer-upload {
margin-top: 25px;
}
.flyer-upload label {
display: block;
margin-bottom: 8px;
}
.flyer-help {
color: #8b949e;
font-size: 0.9rem;
margin-top: 6px;
}
.flyer-preview-container {
margin-top: 15px;
display: none;
}
.flyer-preview {
max-width: 300px;
max-height: 400px;
display: block;
border-radius: 10px;
border: 1px solid #30363d;
}
.flyer-preview-name {
margin-top: 8px;
color: #8b949e;
font-size: 0.9rem;
}
.selected-venue {
margin-top: 10px;
padding: 12px;
background: #0d1117;
border: 1px solid #30363d;
border-radius: 8px;
color: #b8c1cc;
display: none;
}
.duplicate-warning { display:none; margin:10px 0; padding:12px 14px; color:#fde68a; background:#422006; border:1px solid #d97706; border-radius:9px; }
.duplicate-warning strong { display:block; margin-bottom:6px; }
.duplicate-warning ul { margin:6px 0 0; padding-left:20px; }
.duplicate-warning a { color:#fef3c7; text-decoration:underline; }
</style>
<link rel="stylesheet" href="/static/css/language.css">
</head>
<body>
<header>
<div class="header-inner">
<a href="/" class="logo">
<img class="brand-logo" src="/static/images/metalcircle-full.png" alt="MetalCircle">
</a>
{% include '_header_controls.html' %}
</div>
</header>
<main>
<div class="page-title">
<h1>{{ _('🎤 Veranstaltung hinzufügen') }}</h1>
<p>
{{ _('Trag ein, worauf wir uns freuen.') }}
</p>
</div>
<section class="empty">
<form
method="post"
action="/concerts"
enctype="multipart/form-data"
>
<p>
<label for="event-type">{{ _('Kategorie') }}</label><br>
<select name="event_type" id="event-type" required>
<option value="concert">{{ _('Konzert') }}</option>
<option value="festival">Festival</option>
<option value="other">{{ _('Sonstiges') }}</option>
</select>
</p>
<p id="parent-event-field" hidden>
<label for="parent-event-id">{{ _('Gehört zu') }}</label><br>
<select name="parent_event_id" id="parent-event-id">
<option value="">{{ _('Keine Verknüpfung eigenständige Karte') }}</option>
{% for event in linkable_events %}
<option value="{{ event.id }}">{{ event.event_type_label | t }} · {{ event.title }} · {{ event.date }}</option>
{% endfor %}
</select>
<small>{{ _('Zum Beispiel ein gemeinsames Vortrinken vor einem Konzert.') }}</small>
</p>
<fieldset id="event-visibility-field" hidden>
<legend>{{ _('Sichtbarkeit') }}</legend>
<label><input type="radio" name="visibility" value="public" checked> {{ _('Öffentlich alle können die Veranstaltung sehen und teilnehmen') }}</label><br>
<label><input type="radio" name="visibility" value="friends"> {{ _('Nur Freunde nur bestätigte Freunde können sie sehen und teilnehmen') }}</label><br>
<label><input type="radio" name="visibility" value="private"> {{ _('Privat nur gezielt eingeladene Mitglieder') }}</label>
</fieldset>
<fieldset id="event-invitations-field" hidden>
<legend>{{ _('Freunde einladen') }}</legend>
<p class="flyer-help">{{ _('Eingeladene erhalten eine Benachrichtigung und sehen die Veranstaltung in ihrer Übersicht.') }}</p>
{% for member in invitable_users %}
<label style="display:block;margin:7px 0"><input type="checkbox" name="invited_user_ids" value="{{ member.id }}"> {{ member.display_name }} <small>@{{ member.username }}</small></label>
{% else %}<p>{{ _('Noch keine bestätigten Freunde vorhanden.') }}</p>{% endfor %}
</fieldset>
<!-- ================================================= -->
<!-- Künstler -->
<!-- ================================================= -->
<p>
<label>
{{ _('Titel / Künstler / Band') }}<br>
<input
type="text"
name="artist"
id="artist"
required
minlength="2"
maxlength="255"
placeholder="{{ _('z. B. Iron Maiden') }}"
>
</label>
</p>
<p>
<label for="band-names">{{ _('Bands / Line-up') }} <small>{{ _('(eine Band pro Zeile)') }}</small><br>
<textarea id="band-names" name="band_names" rows="3" maxlength="4000" placeholder="{{ _('dArtagnan\nSupportband') }}"></textarea>
</label>
<small>{{ _('Der Veranstaltungstitel bleibt frei. Diese Namen werden einzeln für „Band folgen“ verwendet.') }}</small>
</p>
<!-- ================================================= -->
<!-- Veranstaltungsort -->
<!-- ================================================= -->
<div class="venue-search">
<label for="venue-search">
{{ _('Veranstaltungsort') }}
</label>
<div class="venue-search-control">
<input
type="text"
id="venue-search"
name="venue_name"
autocomplete="off"
placeholder="{{ _('z. B. Turbinenhalle') }}"
required
>
<div
id="venue-results"
class="venue-results"
></div>
</div>
<div
id="selected-venue"
class="selected-venue"
></div>
<div class="venue-manual-details">
<small>{{ _('Optional für eine bessere Zuordnung:') }}</small>
<div class="venue-address-grid">
<input type="text" name="street" id="venue-street" placeholder="{{ _('Straße') }}">
<input type="text" name="postal_code" id="venue-postal-code" placeholder="{{ _('PLZ') }}">
<input type="text" name="city" id="venue-city" placeholder="{{ _('Ort / Stadt') }}">
<input type="text" name="country" id="venue-country" placeholder="{{ _('Land') }}">
</div>
</div>
<input
type="hidden"
name="venue_id"
id="venue-id"
>
<input
type="hidden"
name="latitude"
id="venue-latitude"
>
<input
type="hidden"
name="longitude"
id="venue-longitude"
>
</div>
<!-- ================================================= -->
<!-- Datum -->
<!-- ================================================= -->
<p>
<label>
{{ _('Datum und Uhrzeit') }}<br>
<input
type="datetime-local"
name="start_datetime"
id="start-datetime"
required
>
</label>
</p>
<div id="duplicate-warning" class="duplicate-warning" role="status" aria-live="polite"></div>
<input type="hidden" name="duplicate_confirmed" id="duplicate-confirmed" value="false">
<p id="festival-end-field" hidden>
<label>
{{ _('Enddatum und Uhrzeit') }}<br>
<input type="datetime-local" name="end_datetime" id="festival-end-datetime">
</label>
</p>
<!-- ================================================= -->
<!-- Beschreibung -->
<!-- ================================================= -->
<p>
<label>
{{ _('Beschreibung') }}<br>
<textarea
name="description"
rows="5"
placeholder="{{ _('Optional: Infos zur Veranstaltung, Tour, Supportbands usw.') }}"
></textarea>
</label>
</p>
<!-- ================================================= -->
<!-- Ticket-Link -->
<!-- ================================================= -->
<p>
<label>
{{ _('Ticket-Link') }}<br>
<input
type="url"
name="ticket_url"
placeholder="https://..."
>
</label>
</p>
<!-- ================================================= -->
<!-- Ticketpreis -->
<!-- ================================================= -->
<p>
<label>
{{ _('Ticketpreis') }}<br>
<input
type="number"
name="ticket_price"
step="0.01"
min="0"
placeholder="{{ _('z. B. 59.90') }}"
>
</label>
</p>
<!-- ================================================= -->
<!-- Flyer -->
<!-- ================================================= -->
<div class="flyer-upload">
<label for="flyer-url">{{ _('🔗 Flyer extern verlinken') }} <small>{{ _('(bevorzugt)') }}</small></label>
<input type="url" id="flyer-url" name="flyer_url" placeholder="https://veranstalter.example/flyer.jpg">
<div class="flyer-help">{{ _('Bitte möglichst den offiziellen Flyer des Veranstalters oder der Band verlinken. Das Bild wird nicht auf MetalCircle kopiert; der Link wird als Quelle ausgewiesen.') }}</div>
<label for="flyer">
{{ _('🎨 Veranstaltungs-Flyer') }}
</label>
<input
type="file"
id="flyer"
name="flyer"
accept="image/jpeg,image/png,image/webp"
>
<div class="flyer-help">
{{ _('Alternative, falls kein offizieller externer Link verfügbar ist: JPG, PNG oder WEBP · maximal 10 MB. Ist ein Link angegeben, wird er bevorzugt dargestellt.') }}
</div>
<div
id="flyer-preview-container"
class="flyer-preview-container"
>
<img
id="flyer-preview"
class="flyer-preview"
alt="{{ _('Flyer Vorschau') }}"
>
<div
id="flyer-preview-name"
class="flyer-preview-name"
></div>
</div>
</div>
<!-- ================================================= -->
<!-- Buttons -->
<!-- ================================================= -->
<div style="margin-top: 30px;">
<button
type="submit"
class="button"
>
{{ _('💾 Veranstaltung speichern') }}
</button>
<a
href="/"
class="button button-secondary"
>
{{ _('Abbrechen') }}
</a>
</div>
</form>
</section>
</main>
<script>
const eventType = document.getElementById("event-type");
const parentEventField = document.getElementById("parent-event-field");
const parentEventId = document.getElementById("parent-event-id");
const festivalEndField = document.getElementById("festival-end-field");
const festivalEndDatetime = document.getElementById("festival-end-datetime");
const eventVisibilityField = document.getElementById("event-visibility-field");
const eventInvitationsField = document.getElementById("event-invitations-field");
const visibilityInputs = [...document.querySelectorAll('input[name="visibility"]')];
function updateEventFields() {
const isFestival = eventType.value === "festival";
const isOther = eventType.value === "other";
festivalEndField.hidden = !isFestival;
festivalEndDatetime.required = isFestival;
parentEventField.hidden = !isOther;
eventVisibilityField.hidden = !isOther;
const isPrivate = isOther && document.querySelector('input[name="visibility"]:checked').value === "private";
eventInvitationsField.hidden = !isPrivate;
if (!isFestival) festivalEndDatetime.value = "";
if (!isOther) parentEventId.value = "";
}
eventType.addEventListener("change", updateEventFields);
visibilityInputs.forEach(input => input.addEventListener("change", updateEventFields));
updateEventFields();
/* ============================================================
VENUE SEARCH
============================================================ */
const venueSearch =
document.getElementById(
"venue-search"
);
const venueResults =
document.getElementById(
"venue-results"
);
const selectedVenue =
document.getElementById(
"selected-venue"
);
let searchTimeout = null;
let venueRequestController = null;
function clearVenueSelection() {
[
"venue-id",
"venue-city",
"venue-street",
"venue-postal-code",
"venue-country",
"venue-latitude",
"venue-longitude"
].forEach(
id => {
document.getElementById(id).value = "";
}
);
}
venueSearch.addEventListener(
"input",
() => {
clearTimeout(
searchTimeout
);
const query =
venueSearch.value.trim();
venueResults.innerHTML = "";
selectedVenue.style.display =
"none";
clearVenueSelection();
if (query.length < 2) {
return;
}
searchTimeout = setTimeout(
() => {
searchVenues(
query
);
},
450
);
}
);
/* ============================================================
VENUE SEARCH REQUEST
============================================================ */
async function searchVenues(
query
) {
try {
if (venueRequestController) {
venueRequestController.abort();
}
venueRequestController = new AbortController();
const response =
await fetch(
`/api/venues/search?q=${encodeURIComponent(query)}`,
{
signal: venueRequestController.signal
}
);
if (!response.ok) {
appendManualVenueResult(query, true);
return;
}
const venues =
await response.json();
venueResults.innerHTML =
"";
venues.forEach(
venue => {
const result =
document.createElement(
"button"
);
result.type =
"button";
result.className =
"venue-result";
const address = [
venue.street,
venue.postal_code,
venue.city
]
.filter(Boolean)
.join(" ");
result.innerHTML = `
<strong>
📍 ${escapeHtml(
venue.name
)}
</strong>
<span>
${escapeHtml(
address
)}
</span>
`;
result.addEventListener(
"click",
() => {
selectVenue(
venue
);
}
);
venueResults.appendChild(
result
);
}
);
appendManualVenueResult(query, venues.length === 0);
} catch (error) {
if (error.name === "AbortError") {
return;
}
console.error(
"Venue search failed:",
error
);
venueResults.innerHTML = "";
appendManualVenueResult(query, true);
}
}
function appendManualVenueResult(query, isOnlyResult) {
const result = document.createElement("button");
result.type = "button";
result.className = "venue-result venue-result-manual";
result.innerHTML = `
<strong>${escapeHtml({{ _('✏️ „{name}“ verwenden') | tojson }}.replace('{name}', query))}</strong>
<span>${isOnlyResult ? {{ _('Keine passenden Treffer Eingabe trotzdem speichern') | tojson }} : {{ _('Als eigenen Veranstaltungsort anlegen') | tojson }}}</span>
`;
result.addEventListener("click", () => {
selectVenue({
id: "",
name: query,
street: document.getElementById("venue-street").value,
postal_code: document.getElementById("venue-postal-code").value,
city: document.getElementById("venue-city").value,
country: document.getElementById("venue-country").value,
latitude: "",
longitude: ""
});
});
venueResults.appendChild(result);
}
/* ============================================================
VENUE SELECT
============================================================ */
function selectVenue(
venue
) {
document.getElementById(
"venue-id"
).value =
venue.id ?? "";
document.getElementById(
"venue-city"
).value =
venue.city ?? "";
document.getElementById(
"venue-street"
).value =
venue.street ?? "";
document.getElementById(
"venue-postal-code"
).value =
venue.postal_code ?? "";
document.getElementById(
"venue-country"
).value =
venue.country ?? "";
document.getElementById(
"venue-latitude"
).value =
venue.latitude ?? "";
document.getElementById(
"venue-longitude"
).value =
venue.longitude ?? "";
venueSearch.value =
venue.name;
venueResults.innerHTML =
"";
const address = [
venue.street,
venue.postal_code,
venue.city
]
.filter(Boolean)
.join(" ");
selectedVenue.innerHTML = `
<strong>
📍 ${escapeHtml(
venue.name
)}
</strong>
${
address
? `<br>${escapeHtml(address)}`
: ""
}
`;
selectedVenue.style.display =
"block";
}
/* ============================================================
FLYER PREVIEW
============================================================ */
const flyerInput =
document.getElementById(
"flyer"
);
const flyerPreviewContainer =
document.getElementById(
"flyer-preview-container"
);
const flyerPreview =
document.getElementById(
"flyer-preview"
);
const flyerPreviewName =
document.getElementById(
"flyer-preview-name"
);
flyerInput.addEventListener(
"change",
() => {
const file =
flyerInput.files[0];
if (!file) {
flyerPreviewContainer.style.display =
"none";
flyerPreview.src =
"";
flyerPreviewName.textContent =
"";
return;
}
if (
![
"image/jpeg",
"image/png",
"image/webp"
].includes(
file.type
)
) {
alert(
{{ _('Bitte JPG, PNG oder WEBP auswählen.') | tojson }}
);
flyerInput.value =
"";
return;
}
if (
file.size >
10 * 1024 * 1024
) {
alert(
{{ _('Der Flyer darf maximal 10 MB groß sein.') | tojson }}
);
flyerInput.value =
"";
return;
}
const reader =
new FileReader();
reader.onload =
event => {
flyerPreview.src =
event.target.result;
flyerPreviewName.textContent =
file.name;
flyerPreviewContainer.style.display =
"block";
};
reader.readAsDataURL(
file
);
}
);
// Große Flyer vor dem Absenden verkleinern. Dadurch bleibt der Multipart-
// Request unter typischen Proxy-Limits und der Server muss keine riesigen
// Originaldateien verarbeiten.
const concertForm = flyerInput.form;
const artistInput = document.getElementById("artist");
const bandNamesInput = document.getElementById("band-names");
const startDatetimeInput = document.getElementById("start-datetime");
const duplicateWarning = document.getElementById("duplicate-warning");
const duplicateConfirmed = document.getElementById("duplicate-confirmed");
let duplicateTimeout = null;
let duplicateRequestController = null;
function showDuplicateMatches(matches) {
duplicateWarning.replaceChildren();
if (!matches.length) {
duplicateWarning.style.display = "none";
return;
}
const heading = document.createElement("strong");
heading.textContent = {{ _('⚠️ Möglicherweise existiert diese Veranstaltung bereits:') | tojson }};
const list = document.createElement("ul");
matches.forEach(match => {
const item = document.createElement("li");
const link = document.createElement("a");
link.href = `/concerts/${match.id}`;
link.target = "_blank";
link.rel = "noopener";
link.textContent = `${match.artist} · ${match.date} ${match.time}${match.venue ? ` · ${match.venue}` : ""}`;
item.appendChild(link);
list.appendChild(item);
});
duplicateWarning.append(heading, list);
duplicateWarning.style.display = "block";
}
async function checkForDuplicates(showWarning = true) {
const artist = artistInput.value.trim();
const startDate = startDatetimeInput.value;
if (artist.length < 2 || !startDate) {
if (showWarning) showDuplicateMatches([]);
return [];
}
if (duplicateRequestController) duplicateRequestController.abort();
duplicateRequestController = new AbortController();
try {
const params = new URLSearchParams({artist, start_date: startDate, band_names: bandNamesInput.value});
const response = await fetch(`/api/concerts/duplicates?${params}`, {
signal: duplicateRequestController.signal
});
if (!response.ok) return [];
const matches = (await response.json()).matches || [];
if (showWarning) showDuplicateMatches(matches);
return matches;
} catch (error) {
if (error.name !== "AbortError") console.error("Duplicate check failed:", error);
return [];
}
}
[artistInput, bandNamesInput, startDatetimeInput].forEach(input => input.addEventListener("input", () => {
duplicateConfirmed.value = "false";
concertForm.dataset.readyToSubmit = "false";
clearTimeout(duplicateTimeout);
duplicateTimeout = setTimeout(() => checkForDuplicates(true), 450);
}));
async function optimizeFlyerUpload(file) {
const bitmap = await createImageBitmap(file);
const maxSide = 1800;
const scale = Math.min(1, maxSide / Math.max(bitmap.width, bitmap.height));
const canvas = document.createElement("canvas");
canvas.width = Math.max(1, Math.round(bitmap.width * scale));
canvas.height = Math.max(1, Math.round(bitmap.height * scale));
const context = canvas.getContext("2d");
context.drawImage(bitmap, 0, 0, canvas.width, canvas.height);
bitmap.close();
let quality = 0.86;
let blob;
do {
blob = await new Promise(resolve => canvas.toBlob(resolve, "image/jpeg", quality));
quality -= 0.08;
} while (blob && blob.size > 900 * 1024 && quality >= 0.5);
if (!blob) throw new Error("Bild konnte nicht verarbeitet werden");
return new File([blob], "flyer.jpg", {type: "image/jpeg"});
}
concertForm.addEventListener("submit", async event => {
if (concertForm.dataset.readyToSubmit === "true") return;
event.preventDefault();
const matches = await checkForDuplicates(true);
if (matches.length && duplicateConfirmed.value !== "true") {
const proceed = window.confirm(
{{ _('Am selben Tag gibt es bereits eine Veranstaltung mit einem sehr ähnlichen Bandnamen. Trotzdem speichern?') | tojson }}
);
if (!proceed) return;
duplicateConfirmed.value = "true";
}
const file = flyerInput.files[0];
if (file && concertForm.dataset.flyerOptimized !== "true") {
try {
const transfer = new DataTransfer();
transfer.items.add(await optimizeFlyerUpload(file));
flyerInput.files = transfer.files;
} catch (error) {
console.error("Flyer optimization failed:", error);
}
concertForm.dataset.flyerOptimized = "true";
}
concertForm.dataset.readyToSubmit = "true";
concertForm.requestSubmit();
});
/* ============================================================
HTML ESCAPING
============================================================ */
function escapeHtml(
value
) {
const div =
document.createElement(
"div"
);
div.textContent =
value ?? "";
return div.innerHTML;
}
</script>
</body>
</html>