1 files changed, 104 insertions, 0 deletions
diff --git a/ext/mixed/js/util.js b/ext/mixed/js/util.js
new file mode 100644
index 00000000..4ce60e4f
--- /dev/null
+++ b/ext/mixed/js/util.js
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2017  Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+/*
+ * Audio
+ */
+
+function audioBuildUrl(definition, cache={}) {
+    return new Promise((resolve, reject) => {
+        const response = cache[definition.expression];
+        if (response) {
+            resolve(response);
+        } else {
+            const data = {
+                post: 'dictionary_reference',
+                match_type: 'exact',
+                search_query: definition.expression
+            };
+
+            const params = [];
+            for (const key in data) {
+                params.push(`${encodeURIComponent(key)}=${encodeURIComponent(data[key])}`);
+            }
+
+            const xhr = new XMLHttpRequest();
+            xhr.open('POST', 'https://www.japanesepod101.com/learningcenter/reference/dictionary_post');
+            xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
+            xhr.addEventListener('error', () => reject('failed to scrape audio data'));
+            xhr.addEventListener('load', () => {
+                cache[definition.expression] = xhr.responseText;
+                resolve(xhr.responseText);
+            });
+
+            xhr.send(params.join('&'));
+        }
+    }).then(response => {
+        const dom = new DOMParser().parseFromString(response, 'text/html');
+        for (const row of dom.getElementsByClassName('dc-result-row')) {
+            try {
+                const url = row.getElementsByClassName('ill-onebuttonplayer').item(0).getAttribute('data-url');
+                const reading = row.getElementsByClassName('dc-vocab_kana').item(0).innerText;
+                if (url && reading && (!definition.reading || definition.reading === reading)) {
+                    return url;
+                }
+            } catch (e) {
+                // NOP
+            }
+        }
+    });
+}
+
+function audioBuildFilename(definition) {
+    if (definition.reading && definition.expression) {
+        let filename = 'yomichan';
+        if (definition.reading) {
+            filename += `_${definition.reading}`;
+        }
+        if (definition.expression) {
+            filename += `_${definition.expression}`;
+        }
+
+        return filename += '.mp3';
+    }
+}
+
+function audioInject(definition, fields) {
+    const filename = audioBuildFilename(definition);
+    if (!filename) {
+        return Promise.resolve(true);
+    }
+
+    let usesAudio = false;
+    for (const name in fields) {
+        if (fields[name].includes('{audio}')) {
+            usesAudio = true;
+            break;
+        }
+    }
+
+    if (!usesAudio) {
+        return Promise.resolve(true);
+    }
+
+    return audioBuildUrl(definition).then(url => {
+        definition.audio = {url, filename};
+        return true;
+    }).catch(() => false);
+}