Implement custom download API and related functionality for markdown …

…files

.types/runtime.ts

@@ -124,7 +124,9 @@ export class FS {
   ReadDir(path: string, recursive: boolean = false): string[] {
     return [];
   }
-
+  Download(path: string): { content: ReadCloser; type: MimeType } {
+    return { content: 0, type: "" };
+  }
   Zip(source: string, destination: string) {}
   MkdirAll(path: string) {}
   DirName(path: string): string {
@@ -158,6 +160,9 @@ export class FS {
   MoveAppend(source: string, destination: string) {}
   Remove(path: string) {}
   RemoveAll(path: string) {}
+  MimeType(name: string): string {
+    return "";
+  }
 }
 
 export const http = {
@@ -344,3 +349,7 @@ export type UploadFileResponse =
        */
       [key: string]: any;
     };
+
+type ReadCloser = number;
+
+type MimeType = string;

apis/download.http.yao

@@ -0,0 +1,18 @@
+{
+  "name": "Custom Download",
+  "version": "1.0.0",
+  "guard": "-",
+  "paths": [
+    {
+      "path": "/*name",
+      "method": "GET",
+      "process": "scripts.download.Markdown",
+      "in": ["$param.name"],
+      "out": {
+        "status": 200,
+        "headers": { "Content-Type": "{{ type }}" },
+        "body": "{{ content }}"
+      }
+    }
+  ]
+}

scripts/download.ts

@@ -0,0 +1,23 @@
+import { Exception, FS } from "@yao/runtime";
+
+/**
+ * Download markdown file by name
+ * yao run scripts.download.Markdown README.md
+ * curl -vv http://localhost:5099/api/download/README.md
+ * @param name
+ */
+function Markdown(name: string) {
+  const fs = new FS(`app`); // app is the application root directory
+  //   const fs = new FS("data"); // data is the application data directory
+  const filename = `${name}`;
+  const ext = fs.ExtName(filename);
+  if (ext !== "md") {
+    throw new Exception(`File is not markdown: ${filename}`, 400);
+  }
+
+  if (!fs.Exists(filename)) {
+    throw new Exception(`File not found: ${filename}`, 404);
+  }
+
+  return fs.Download(filename);
+}

tables/hero.tab.yao

@@ -275,9 +275,10 @@
         "bind": "title",
         "view": {
           "type": "A",
-          "props": {
-            "href": "http://localhost:8000/yao/x/Form/hero/1/edit"
-          }
+          // You can also use the following configuration to customize the download API logic
+          // api: /apis/download.http.yao
+          // process: /scripts/download.ts
+          "props": { "href": "/api/download/README.md?from={{ id }}" }
         }
       },
       "角色（数值）": {