1 files changed, 148 insertions, 0 deletions
diff --git a/ext/js/data/anki-note-builder.js b/ext/js/data/anki-note-builder.js
new file mode 100644
index 00000000..e1399f66
--- /dev/null
+++ b/ext/js/data/anki-note-builder.js
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2020-2021  Yomichan Authors
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+/* global
+ * TemplateRendererProxy
+ */
+
+class AnkiNoteBuilder {
+    constructor(enabled) {
+        this._markerPattern = /\{([\w-]+)\}/g;
+        this._templateRenderer = enabled ? new TemplateRendererProxy() : null;
+    }
+
+    async createNote({
+        definition,
+        mode,
+        context,
+        templates,
+        deckName,
+        modelName,
+        fields,
+        tags=[],
+        injectedMedia=null,
+        checkForDuplicates=true,
+        duplicateScope='collection',
+        resultOutputMode='split',
+        glossaryLayoutMode='default',
+        compactTags=false,
+        errors=null
+    }) {
+        let duplicateScopeDeckName = null;
+        let duplicateScopeCheckChildren = false;
+        if (duplicateScope === 'deck-root') {
+            duplicateScope = 'deck';
+            duplicateScopeDeckName = this.getRootDeckName(deckName);
+            duplicateScopeCheckChildren = true;
+        }
+
+        const data = {
+            definition,
+            mode,
+            context,
+            resultOutputMode,
+            glossaryLayoutMode,
+            compactTags,
+            injectedMedia
+        };
+        const formattedFieldValuePromises = [];
+        for (const [, fieldValue] of fields) {
+            const formattedFieldValuePromise = this._formatField(fieldValue, data, templates, errors);
+            formattedFieldValuePromises.push(formattedFieldValuePromise);
+        }
+
+        const formattedFieldValues = await Promise.all(formattedFieldValuePromises);
+        const noteFields = {};
+        for (let i = 0, ii = fields.length; i < ii; ++i) {
+            const fieldName = fields[i][0];
+            const formattedFieldValue = formattedFieldValues[i];
+            noteFields[fieldName] = formattedFieldValue;
+        }
+
+        return {
+            fields: noteFields,
+            tags,
+            deckName,
+            modelName,
+            options: {
+                allowDuplicate: !checkForDuplicates,
+                duplicateScope,
+                duplicateScopeOptions: {
+                    deckName: duplicateScopeDeckName,
+                    checkChildren: duplicateScopeCheckChildren
+                }
+            }
+        };
+    }
+
+    containsMarker(fields, marker) {
+        marker = `{${marker}}`;
+        for (const [, fieldValue] of fields) {
+            if (fieldValue.includes(marker)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    containsAnyMarker(field) {
+        const result = this._markerPattern.test(field);
+        this._markerPattern.lastIndex = 0;
+        return result;
+    }
+
+    getRootDeckName(deckName) {
+        const index = deckName.indexOf('::');
+        return index >= 0 ? deckName.substring(0, index) : deckName;
+    }
+
+    // Private
+
+    async _formatField(field, data, templates, errors=null) {
+        return await this._stringReplaceAsync(field, this._markerPattern, async (g0, marker) => {
+            try {
+                return await this._renderTemplate(templates, data, marker);
+            } catch (e) {
+                if (errors) {
+                    const error = new Error(`Template render error for {${marker}}`);
+                    error.data = {error: e};
+                    errors.push(error);
+                }
+                return `{${marker}-render-error}`;
+            }
+        });
+    }
+
+    async _stringReplaceAsync(str, regex, replacer) {
+        let match;
+        let index = 0;
+        const parts = [];
+        while ((match = regex.exec(str)) !== null) {
+            parts.push(str.substring(index, match.index), replacer(...match, match.index, str));
+            index = regex.lastIndex;
+        }
+        if (parts.length === 0) {
+            return str;
+        }
+        parts.push(str.substring(index));
+        return (await Promise.all(parts)).join('');
+    }
+
+    async _renderTemplate(template, data, marker) {
+        return await this._templateRenderer.render(template, {data, marker}, 'ankiNote');
+    }
+}