FileCarrier

src/features/node.ts

@@ -11,6 +11,7 @@ import { judgeRelation } from 'oak-domain/lib/store/relation';
 import { StorageSchema } from 'oak-domain/lib/types/Storage';
 import { Pagination } from '../types/Pagination';
 import { NamedFilterItem, NamedSorterItem } from '../types/NamedCondition';
+import { FileCarrier } from '../types/FileCarrier';
 
 export class Node<ED extends EntityDict, T extends keyof ED, Cxt extends Context<ED>, AD extends Record<string, Aspect<ED, Cxt>>> {
     protected entity: T;
@@ -410,6 +411,7 @@ class SingleNode<ED extends EntityDict, T extends keyof ED, Cxt extends Context<
     private children: {
         [K in keyof ED[T]['Schema']]?: SingleNode<ED, keyof ED, Cxt, AD> | ListNode<ED, keyof ED, Cxt, AD>;
     };
+    private fileCarrier?: FileCarrier;
 
     constructor(entity: T, fullPath: string, schema: StorageSchema<ED>, cache: Cache<ED, Cxt, AD>, projection?: ED[T]['Selection']['data'],
         parent?: Node<ED, keyof ED, Cxt, AD>, id?: string, action?: ED[T]['Action']) {
@@ -592,6 +594,14 @@ class SingleNode<ED extends EntityDict, T extends keyof ED, Cxt extends Context<
         this.updateChildrenValues();
     }
 
+    setFileCarrier(fileCarrier: FileCarrier) {
+        this.fileCarrier = fileCarrier;
+    }
+
+    getFileCarrier() {
+        return this.fileCarrier;
+    }
+
     resetUpdateData() {
         this.updateData = undefined;
         // this.action = undefined;
@@ -892,8 +902,8 @@ export class RunningNode<ED extends EntityDict, Cxt extends Context<ED>, AD exte
         let iter = 1;
         while (iter < paths.length) {
             const childPath = paths[iter];
-            node = (await node.getChild<Cxt, AD>(childPath))!;
             iter++;
+            node = (await node.getChild<Cxt, AD>(childPath))!;
         }
         return node;
     }
@@ -931,6 +941,14 @@ export class RunningNode<ED extends EntityDict, Cxt extends Context<ED>, AD exte
         }
     }
 
+    @Action
+    async setFileCarrier(path: string, fileCarrier: FileCarrier) {
+        const node = await this.findNode(path);
+        assert(node instanceof SingleNode);
+
+
+    }
+
     @Action
     async refresh(path: string) {
         const node = await this.findNode(path);

src/index.ts

@@ -8,3 +8,4 @@ export {
 export * from './types/Feature';
 export * from './types/ExceptionRoute';
 export { BasicFeatures } from  './features';
+export * from './utils/WechatMpFileCarrier';

src/platforms/wechatMp/index.ts

@@ -8,6 +8,7 @@ import assert from "assert";
 import { assign, intersection, rest, union } from "lodash";
 import { ExceptionHandler, ExceptionRouters } from '../../types/ExceptionRoute';
 import { NamedFilterItem, NamedSorterItem } from '../../types/NamedCondition';
+import { FileCarrier } from '../../types/FileCarrier';
 
 type OakComponentOption<
     ED extends EntityDict,
@@ -19,7 +20,10 @@ type OakComponentOption<
     FormedData extends WechatMiniprogram.Component.DataOption
     > = {
         entity: T;
-        formData: ($rows: SelectionResult<ED[T]['Schema'], Proj>['result'], features: BasicFeatures<ED, Cxt, AD> & FD) => Promise<FormedData>;
+        formData: (
+            $rows: SelectionResult<ED[T]['Schema'], Proj>['result'],
+            features: BasicFeatures<ED, Cxt, AD> & FD,
+            fileCarrier?: ED[T]['IsFileCarrier'] extends boolean ? FileCarrier : undefined) => Promise<FormedData>
     };
 
 interface OakPageOption<
@@ -47,7 +51,10 @@ interface OakPageOption<
         '#name'?: string;
     }>;
     actions?: ED[T]['Action'][];
-    formData: ($rows: SelectionResult<ED[T]['Schema'], Proj>['result'], features: BasicFeatures<ED, Cxt, AD> & FD) => Promise<FormedData>;
+    formData: (
+        $rows: SelectionResult<ED[T]['Schema'], Proj>['result'],
+        features: BasicFeatures<ED, Cxt, AD> & FD,
+        fileCarrier?: ED[T]['IsFileCarrier'] extends boolean ? FileCarrier : undefined) => Promise<FormedData>
 };
 
 type OakComponentProperties = {
@@ -88,6 +95,7 @@ type OakComponentMethods<ED extends EntityDict, T extends keyof ED> = {
     callPicker: (attr: string, params: Record<string, any>) => void;
     setFilters: (filters: NamedFilterItem<ED, T>[]) => void;
     navigateTo: <T2 extends keyof ED>(options: Parameters<typeof wx.navigateTo>[0] & OakNavigateToParameters<ED, T2>) => ReturnType<typeof wx.navigateTo>;
+    setFileCarrier: (fileCarrier: ED[T]['IsFileCarrier'] extends true ? FileCarrier : never) => void;
 };
 
 type OakPageMethods<ED extends EntityDict, T extends keyof ED> = OakComponentMethods<ED, T> & {
@@ -276,6 +284,10 @@ function createPageOptions<ED extends EntityDict,
                 features.runningNode.setUpdateData(this.data.oakFullpath, attr, value);
             },
 
+            setFileCarrier(fileCarrier) {
+                return features.runningNode.setFileCarrier(this.data.oakFullpath, fileCarrier);
+            },
+
             callPicker(attr: string, params: Record<string, any>) {
                 if (this.data.oakExecuting) {
                     return;
@@ -583,6 +595,10 @@ function createComponentOptions<ED extends EntityDict,
                 features.runningNode.setUpdateData(this.data.oakFullpath, attr, value);
             },
 
+            setFileCarrier(fileCarrier) {
+                return features.runningNode.setFileCarrier(this.data.oakFullpath, fileCarrier);
+            },
+
             callPicker(attr: string, params: Record<string, any>) {
                 if (this.data.oakExecuting) {
                     return;
@@ -1005,6 +1021,6 @@ export type MakeOakComponent<
             OakComponentData & FormedData,
             OakComponentInstanceProperties<ED, Cxt, AD, FD>,
             IS,
-            true
+            false
         >
     ) => string;

src/types/FileCarrier.ts

@@ -0,0 +1,3 @@
+export abstract class FileCarrier {
+    abstract getBytes(): Promise<Uint8Array>;
+}

src/utils/WechatMpFileCarrier.ts

@@ -0,0 +1,7 @@
+import { FileCarrier } from "../types/FileCarrier";
+
+export class WechatMpFileCarrier extends FileCarrier {
+    getBytes(): Promise<Uint8Array> {
+        throw new Error("Method not implemented.");
+    }    
+}