Auto-refresh images on edit

Only for Markdown images, not drawing blocks, since those will eventually be deprecated.

src/const.ts

@@ -5,4 +5,5 @@ export const ASSETS_PATH = "assets/";
 export const STORAGE_PATH = DATA_PATH + "storage/petal/siyuan-jsdraw-plugin";
 export const TOOLBAR_PATH = STORAGE_PATH + "/toolbar.json";
 export const CONFIG_PATH = STORAGE_PATH + "/conf.json";
-export const EMBED_PATH = "/plugins/siyuan-jsdraw-plugin/webapp/?path=";
+export const EMBED_PATH = "/plugins/siyuan-jsdraw-plugin/webapp/?path=";
+export const DUMMY_HOST = "https://dummy.host/";

src/editorTab.ts

@@ -5,6 +5,7 @@ import 'js-draw/styles';
 import {getFile, saveFile} from "@/file";
 import {DATA_PATH, JSON_MIME, SVG_MIME, TOOLBAR_PATH} from "@/const";
 import {idToPath} from "@/helper";
+import {replaceAntiCacheID} from "@/protyle";
 
 export function openEditorTab(p: Plugin, path: string) {
     openTab({
@@ -22,6 +23,7 @@ async function saveCallback(editor: Editor, path: string, saveButton: BaseWidget
     const svgElem = editor.toSVG();
     try {
         saveFile(DATA_PATH + path, SVG_MIME, svgElem.outerHTML);
+        await replaceAntiCacheID(path);
         saveButton.setDisabled(true);
         setTimeout(() => { // @todo improve save button feedback
             saveButton.setDisabled(false);

src/protyle.ts

@@ -1,12 +1,12 @@
 import {getBlockByID, sql, updateBlock} from "@/api";
-import {escapeRegExp} from "@/helper";
+import {DUMMY_HOST} from "@/const";
 
 export async function findImageBlocks(src: string) {
 
     const sqlQuery = `
         SELECT id, markdown 
         FROM blocks 
-        WHERE markdown like '%${src}%'
+        WHERE markdown like '%](${src}%' // "](" is to check it's an image src
     `;
 
     try {
@@ -30,7 +30,7 @@ export async function replaceBlockContent(
         }
 
         const originalContent = block.markdown;
-        const newContent = originalContent.replace(escapeRegExp(searchStr), replaceStr);
+        const newContent = originalContent.replaceAll(searchStr, replaceStr);
 
         if (newContent === originalContent) {
             return false;
@@ -44,3 +44,28 @@ export async function replaceBlockContent(
         return false;
     }
 }
+
+export async function replaceAntiCacheID(src: string) {
+
+    const search = encodeURI(src); // the API uses URI-encoded
+    // find blocks containing that image
+    const blocks = await findImageBlocks(search);
+
+    for(const block of blocks) {
+
+        // get all the image sources, with parameters
+        const markdown = block.markdown;
+        const imageRegex = /!\[.*?\]\((.*?)\)/g; // only get images
+        const sources = Array.from(markdown.matchAll(imageRegex))
+            .map(match => match[1])
+            .filter(source => source.startsWith(search)) // discard other images
+
+        for(const source of sources) {
+            const url = new URL(source, DUMMY_HOST);
+            url.searchParams.set('antiCache', Date.now().toString()); // set or replace antiCache
+            const newSource =  url.href.replace(DUMMY_HOST, '');
+            await replaceBlockContent(block.id, source, newSource);
+        }
+    }
+
+}

tsconfig.json

@@ -4,7 +4,7 @@
         "useDefineForClassFields": true,
         "module": "ESNext",
         "lib": [
-            "ES2020",
+            "ES2021",
             "DOM",
             "DOM.Iterable"
         ],