update at 2025-09-22 13:55:41

src/markdown/widget-box.ts

@@ -0,0 +1,179 @@
+/*
+ * Copyright (c) 2024-2025 Sun Booshi
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+import { Tokens, MarkedExtension } from "marked";
+import { Extension } from "./extension";
+import { NMPSettings } from "src/settings";
+import { uevent } from "src/utils";
+import { wxWidget } from "src/weixin-api";
+
+const widgetCache = new Map<string, string>();
+
+export function cleanWidgetCache() {
+  widgetCache.clear();
+}
+
+export class WidgetBox extends Extension {
+  mapToString(map: Map<string, string>): string {
+    if (map.size === 0) return "";
+    
+    return Array.from(map.entries())
+        .map(([key, value]) => `${key}=${value}`)
+        .join("&"); // 用 "&" 连接键值对，可换成其他分隔符
+  }
+
+  calcKey(id: string, title: string, style: Map<string, string>, content: string) {
+    const styleStr = this.mapToString(style);
+    const key = `${id}-${title}-${styleStr}-${content}`;
+    return key; 
+  }
+
+  cacheWidget(id: string, title: string, style: Map<string, string>, content: string, result: string) {
+    const key = this.calcKey(id, title, style, content);
+    widgetCache.set(key, result);
+  }
+
+  getWidget(id: string, title: string, style: Map<string, string>, content: string) {
+    const key = this.calcKey(id, title, style, content);
+    if (!widgetCache.has(key)) {
+      return null;
+    }
+    return widgetCache.get(key);  
+  }
+
+  getBoxTitle(text: string) {
+    let start = text.indexOf(']') + 1;
+    let end = text.indexOf('\n');
+    if (end === -1)  end = text.length;
+    if (start >= end)  return '';
+    return text.slice(start, end).trim();
+  }
+
+  getBoxId(text: string) {
+    const regex = /\[#(.*?)\]/g;
+    let m;
+    if( m = regex.exec(text)) {
+      return m[1];
+    }
+    return "";
+  }
+  matched(text: string) {
+    return this.getBoxId(text) != "";
+  }
+
+  parseStyle(text: string) {
+    const style = text.split(':').map((s) => s.trim());
+    if (style.length != 2)  return null;
+    const key = style[0];
+    const value = style[1];
+    return {key, value};
+  }
+
+  parseBox(text: string) {
+    const lines = text.split('\n');
+    let style = new Map<string, string>();
+    let content = [];
+    let isStyle = false;
+    for (let line of lines) {
+      if (line === '===') {
+        isStyle = !isStyle;
+        continue;
+      }
+      if (isStyle) {
+        const s = this.parseStyle(line);
+        if (s) style.set(s.key, s.value);
+      } else {
+        content.push(line);
+      }
+    }
+    const contentStr = content.join('\n');
+    return { style, contentStr };
+  }
+
+  async reqContent(id: string, title: string, style: Map<string, string>, content: string) {
+    const params = JSON.stringify({
+      id,
+      title,
+      style: Object.fromEntries(style),
+      content
+    });
+    return wxWidget(NMPSettings.getInstance().authKey, params)
+  }
+
+  processColor(style: Map<string, string>) {
+    const keys = style.keys();
+    for (let key of keys) {
+      if (key.includes('color')) {
+        const value = style.get(key);
+        if (!value)  continue;
+        if (value.startsWith('rgb') || value.startsWith('#')) {
+          continue;
+        }
+        style.set(key, '#' + value);
+      }
+    }
+  }
+
+  async renderer(token: Tokens.Blockquote) {
+    let boxId = this.getBoxId(token.text);
+    if (boxId == '') {
+      const body = this.marked.parser(token.tokens);
+      return `<blockquote>${body}</blockquote>`;;
+    }
+
+    const title = this.getBoxTitle(token.text);
+    let style = new Map<string, string>();
+    let content = '';
+    const index = token.text.indexOf('\n');
+    if (index > 0) {
+      const pared = this.parseBox(token.text.slice(index + 1))
+      style = pared.style;
+      content = await this.marked.parse(pared.contentStr);
+    }
+
+    this.processColor(style);
+
+    const cached = this.getWidget(boxId, title, style, content);
+    if (cached) {
+      uevent('render-widgets-cached');
+      return cached;
+    }
+    else {
+      const reqContent = await this.reqContent(boxId, title, style, content);
+      this.cacheWidget(boxId, title, style, content, reqContent);
+      uevent('render-widgets');
+      return reqContent; 
+    }
+  }
+
+  markedExtension(): MarkedExtension {
+    return {
+      extensions: [{
+        name: 'blockquote',
+        level: 'block',
+        renderer: (token: Tokens.Generic) => {
+          return token.html;
+        },
+      }]
+    }
+  }
+}