feat: Use cached smaller images if available.

src/bars/files/ImageResizer.ts

@@ -1,11 +1,9 @@
 import * as fs from "fs";
-import * as os from "os";
-import * as path from "path";
 
-const sharp = require("sharp");
-
-import { IOutputter } from "../../utils/outputter/IOutputter";
 import { FileUtils } from "../../utils/FileUtils";
+import { IOutputter } from "../../utils/outputter/IOutputter";
+
+const sharp = require("sharp");
 
 const MAX_DIMENSION = 800;
 
@@ -39,7 +37,7 @@ export namespace ImageResizer {
         outputter: IOutputter,
         cb: (outPath: string | null, err: any) => void
     ) {
-        const outPath = path.join(os.tmpdir(), path.basename(filePath) + ".resized.jpg");
+        const outPath = FileUtils.getSmallerFilePath(filePath);
 
         // read file to avoid issue where sharp does not release the file lock!
         fs.readFile(filePath, (err, data) => {

src/bars/model/PagingModel.ts

@@ -1,3 +1,3 @@
 export namespace PagingModel {
-    export const IMAGES_PER_PAGE = 100;
+    export const IMAGES_PER_PAGE = 80;
 }

src/utils/FileUtils.ts

@@ -1,4 +1,6 @@
 import * as fs from "fs";
+import * as os from "os";
+import * as path from "path";
 
 export namespace FileUtils {
     export function getFilesizeInMegaBytes(filename: string): number {
@@ -7,7 +9,25 @@ export namespace FileUtils {
         return fileSizeInBytes / (1024 * 1024);
     }
 
+    export function getSmallerFilePath(filePath: string): string {
+        return path.join(os.tmpdir(), path.basename(filePath) + ".resized.jpg");
+    }
+
     export function isLargeFile(filePath: string): boolean {
         return getFilesizeInMegaBytes(filePath) > 0.5;
     }
+
+    export function isSmallerFileNewer(filePath: string): boolean {
+        const smallerFilePath = getSmallerFilePath(filePath);
+
+        if (!fs.existsSync(smallerFilePath)) {
+            return false;
+        }
+
+        return getModificationDate(smallerFilePath) > getModificationDate(filePath);
+    }
+
+    function getModificationDate(filePath: string): Date {
+        return fs.statSync(filePath).mtime;
+    }
 }

src/utils/ImageResizeExecutor.ts

@@ -29,6 +29,13 @@ export namespace ImageResizeExectutor {
                 };
                 continue;
             }
+            if (FileUtils.isSmallerFileNewer(file)) {
+                yield {
+                    originalFilepath: file,
+                    smallerFilepath: FileUtils.getSmallerFilePath(file)
+                };
+                continue;
+            }
             outputter.infoVerbose(`resizing image at ${file}...`);
 
             const stdout = await execShrinkPromise(file);