feat: add ampwall and subvert importers.

README.md

@@ -41,6 +41,13 @@ Add a button on Bandcamp's album pages to open MusicBrainz release editor with p
 [![Source](assets/buttons/button-source.svg)](https://github.com/murdos/musicbrainz-userscripts/blob/master/bandcamp_importer.user.js)
 [![Install](assets/buttons/button-install.svg)](https://raw.github.com/murdos/musicbrainz-userscripts/master/bandcamp_importer.user.js)
 
+## <a name="ampwall_importer"></a> Import Ampwall releases to MusicBrainz
+
+Add a button on Ampwall's album pages to open MusicBrainz release editor with pre-filled data for the selected release
+
+[![Source](assets/buttons/button-source.svg)](https://github.com/murdos/musicbrainz-userscripts/blob/master/ampwall_importer.user.js)
+[![Install](assets/buttons/button-install.svg)](https://raw.github.com/murdos/musicbrainz-userscripts/master/ampwall_importer.user.js)
+
 ## <a name="beatport_importer"></a> <img src="assets/icons/typescript.svg" alt="TypeScript" width="16" height="16"> Import Beatport releases to MusicBrainz
 
 One-click importing of releases from beatport.com/release pages into MusicBrainz
@@ -139,6 +146,13 @@ Add a button on Qobuz's album pages to open MusicBrainz release editor with pre-
 [![Source](assets/buttons/button-source.svg)](https://github.com/murdos/musicbrainz-userscripts/blob/master/qobuz_importer.user.js)
 [![Install](assets/buttons/button-install.svg)](https://raw.github.com/murdos/musicbrainz-userscripts/master/qobuz_importer.user.js)
 
+## <a name="subvert_importer"></a> Import Subvert.fm releases to MusicBrainz
+
+Add a button on Subvert.fm's album pages to open MusicBrainz release editor with pre-filled data for the selected release
+
+[![Source](assets/buttons/button-source.svg)](https://github.com/murdos/musicbrainz-userscripts/blob/master/subvert_importer.user.js)
+[![Install](assets/buttons/button-install.svg)](https://raw.github.com/murdos/musicbrainz-userscripts/master/subvert_importer.user.js)
+
 ## <a name="takealot_importer"></a> Import Takealot releases to MusicBrainz
 
 Add a button to import https://www.takealot.com/ releases to MusicBrainz via API

ampwall_importer.user.js

@@ -0,0 +1,145 @@
+// ==UserScript==
+// @name         Import Ampwall releases to Musicbrainz
+// @description  Add a button on Ampwall release pages to open MusicBrainz release editor with pre-filled data for the selected release
+// @version      2026.6.20
+// @license      X11
+// @downloadURL  https://raw.githubusercontent.com/murdos/musicbrainz-userscripts/master/ampwall_importer.user.js
+// @updateURL    https://raw.githubusercontent.com/murdos/musicbrainz-userscripts/master/ampwall_importer.user.js
+// @namespace    https://github.com/murdos/musicbrainz-userscripts
+// @match        https://ampwall.com/a/*/album/*
+// @require      lib/mbimport.js
+// @require      lib/logger.js
+// @require      lib/mbimportstyle.js
+// ==/UserScript==
+
+function onLoad() {
+    MBImportStyle();
+    const release = retrieveReleaseInfo();
+    insertLink(release, window.location);
+}
+
+function getArtistCredit(json) {
+    return MBImport.makeArtistCredits([json['byArtist']['name']]);
+}
+
+function getFormat() {
+    // We only support digital downloads right now.
+    return 'Digital Media';
+}
+
+function getPackaging() {
+    // We only support digital downloads right now.
+    return 'None';
+}
+
+function getReleaseType() {
+    // It appears that Ampwall treats all releases as albums so just
+    // return nothing for now and let the user decide.
+    return '';
+}
+
+function getTitle(json) {
+    return json['albumRelease'][0]['name'];
+}
+
+function getLabels() {
+    // TODO this will probably explode on releases with multiple labels.
+    const labels = document.querySelector('div[data-testid=labels-links] a');
+    if (labels === null) {
+        return [];
+    }
+    return [
+        {
+            name: labels.textContent,
+            catno: '',
+        },
+    ];
+}
+
+function getDiscs(json) {
+    let tracks = [];
+    json['track']['itemListElement'].forEach(function (track) {
+        tracks.push({
+            artist_credit: MBImport.makeArtistCredits([json['byArtist']['name']]),
+            title: track['name'],
+            duration: parseDuration(track['duration']),
+        });
+    });
+    return [
+        {
+            tracks: tracks,
+            format: getFormat(json),
+        },
+    ];
+}
+
+function getURLs(json) {
+    return [
+        {
+            url: json['url'],
+            link_type: MBImport.URL_TYPES.purchase_for_download,
+        },
+    ];
+}
+
+function parseDuration(s) {
+    // Durations are returned in the format "PT0H0M7S". Strip out the
+    // leading/trailing characters and convert the rest to colons.
+    return s.replace(/(^PT)|(S$)/g, '').replace(/[HM]/g, ':');
+}
+
+function retrieveReleaseInfo() {
+    const json = JSON.parse(document.querySelector("script[type='application/ld+json']").textContent);
+    const releaseDate = new Date(json['datePublished']);
+    const release = {
+        artist_credit: getArtistCredit(json),
+        title: getTitle(json),
+        year: releaseDate.getUTCFullYear(),
+        month: releaseDate.getUTCMonth() + 1,
+        day: releaseDate.getUTCDate(),
+        country: 'XW',
+        status: 'official',
+        language: 'eng',
+        script: 'Latn',
+        type: getReleaseType(json),
+        urls: getURLs(json),
+        labels: getLabels(),
+        discs: getDiscs(json),
+        packaging: getPackaging(),
+        format: getFormat(),
+    };
+    LOGGER.info('Parsed release: ', release);
+    return release;
+}
+
+// Insert button into page
+function insertLink(release) {
+    const edit_note = MBImport.makeEditNote(window.location, 'Ampwall');
+    const div = document.createElement('div');
+
+    const formButton = document.createElement('span');
+    formButton.className = 'tab-title musicbrainz-import';
+    formButton.innerHTML = MBImport.buildFormHTML(MBImport.buildFormParameters(release, edit_note));
+    formButton.style.display = 'inline-block';
+
+    const searchButton = document.createElement('span');
+    searchButton.className = 'tab-title musicbrainz-import';
+    searchButton.innerHTML = MBImport.buildSearchButton(release);
+    searchButton.style.display = 'inline-block';
+
+    div.appendChild(formButton);
+    div.appendChild(searchButton);
+
+    // Set a slight delay to stop breaking React/Next.
+    window.setTimeout(function () {
+        const container = document.querySelector('div.d_flex.ai_center.flex-wrap_wrap.gap_space1');
+        container.appendChild(formButton);
+        container.appendChild(searchButton);
+    }, 2000);
+}
+
+if (document.readyState !== 'loading') {
+    onLoad();
+} else {
+    document.addEventListener('DOMContentLoaded', onLoad);
+}

subvert_importer.user.js

@@ -0,0 +1,149 @@
+// ==UserScript==
+// @name         Import Subvert.fm releases to Musicbrainz
+// @description  Add a button on Subvert.fm release pages to open MusicBrainz release editor with pre-filled data for the selected release
+// @version      2026.6.20
+// @license      X11
+// @downloadURL  https://raw.githubusercontent.com/murdos/musicbrainz-userscripts/master/subvert_importer.user.js
+// @updateURL    https://raw.githubusercontent.com/murdos/musicbrainz-userscripts/master/subvert_importer.user.js
+// @namespace    https://github.com/murdos/musicbrainz-userscripts
+// @match        https://subvert.fm/*/*
+// @match        https://www.subvert.fm/*/*
+// @require      lib/mbimport.js
+// @require      lib/logger.js
+// @require      lib/mbimportstyle.js
+// ==/UserScript==
+
+function onLoad() {
+    MBImportStyle();
+    const release = retrieveReleaseInfo();
+    insertLink(release, window.location);
+}
+
+function getArtistCredit(data) {
+    let artists = [];
+    data['release']['artists'].forEach(function (artist) {
+        artists.push(artist['name']);
+    });
+    return MBImport.makeArtistCredits(artists);
+}
+
+function getFormat() {
+    // We only support digital downloads right now.
+    return 'Digital Media';
+}
+
+function getPackaging() {
+    // We only support digital downloads right now.
+    return 'None';
+}
+
+function getReleaseType(data) {
+    return data['release']['releaseType'];
+}
+
+function getTitle(data) {
+    return data['release']['name'];
+}
+
+function getLabels(data) {
+    let labels = [];
+    data['release']['labelsOnReleases'].forEach(function (label) {
+        labels.push({
+            label: label['label']['name'],
+            catno: label['catalogNumber'],
+        });
+    });
+    return labels;
+}
+
+function getDiscs(data) {
+    let tracks = [];
+    data['release']['tracks'].forEach(function (track) {
+        let artists = [];
+        track['track']['artists'].forEach(function (artist) {
+            artists.push(artist['name']);
+        });
+        tracks.push({
+            artist_credit: MBImport.makeArtistCredits(artists),
+            title: track['track']['name'],
+            duration: track['track']['duration'] * 1000,
+        });
+    });
+    return [
+        {
+            tracks: tracks,
+            format: getFormat(data),
+        },
+    ];
+}
+
+function getURLs(data) {
+    let urls = [];
+    if (data['release']['isDownloadAllowed']) {
+        urls.push({
+            url: window.location,
+            link_type: MBImport.URL_TYPES.purchase_for_download,
+        });
+    }
+    if (data['release']['isStreamingAllowed']) {
+        urls.push({
+            url: window.location,
+            link_type: MBImport.URL_TYPES.stream_for_free,
+        });
+    }
+    if (data['release']['priceCents'] > 0) {
+        urls.push({
+            url: window.location,
+            link_type: MBImport.URL_TYPES.download_for_free,
+        });
+    }
+    return urls;
+}
+
+function retrieveReleaseInfo() {
+    let json = JSON.parse(document.querySelector('script#__NEXT_DATA__').textContent);
+
+    // Skip non-release pages
+    if (json['page'] !== '/[artistSlug]/[releaseSlug]') {
+        return;
+    }
+
+    const data = json['props']['pageProps'];
+    const releaseDate = new Date(data['release']['releaseDate']);
+    const release = {
+        artist_credit: getArtistCredit(data),
+        title: getTitle(data),
+        year: releaseDate.getUTCFullYear(),
+        month: releaseDate.getUTCMonth() + 1,
+        day: releaseDate.getUTCDate(),
+        country: 'XW',
+        status: 'official',
+        language: 'eng',
+        script: 'Latn',
+        type: getReleaseType(data),
+        urls: getURLs(data),
+        labels: getLabels(data),
+        discs: getDiscs(data),
+        packaging: getPackaging(data),
+        format: getFormat(data),
+    };
+    LOGGER.info('Parsed release: ', release);
+    return release;
+}
+
+// Insert button into page
+function insertLink(release, url) {
+    const edit_note = MBImport.makeEditNote(url, 'Subvert');
+    const container = document.querySelector('div.releaseRailMetaWrapper.leftRail.hideMobile');
+    const sourceNode = container.children[container.children.length - 3];
+    const importContainer = sourceNode.cloneNode(true);
+    importContainer.children[0].innerHTML = MBImport.buildFormHTML(MBImport.buildFormParameters(release, edit_note));
+    importContainer.children[1].innerHTML = MBImport.buildSearchButton(release);
+    sourceNode.after(importContainer);
+}
+
+if (document.readyState !== 'loading') {
+    onLoad();
+} else {
+    document.addEventListener('DOMContentLoaded', onLoad);
+}