refactor(server): folder structure (#5573)

packages/backend/server/src/fundamentals/utils/request.ts

@@ -0,0 +1,77 @@
+import type { ArgumentsHost, ExecutionContext } from '@nestjs/common';
+import type { GqlContextType } from '@nestjs/graphql';
+import { GqlArgumentsHost, GqlExecutionContext } from '@nestjs/graphql';
+import type { Request, Response } from 'express';
+
+export function getRequestResponseFromContext(context: ExecutionContext) {
+  switch (context.getType<GqlContextType>()) {
+    case 'graphql': {
+      const gqlContext = GqlExecutionContext.create(context).getContext<{
+        req: Request;
+      }>();
+      return {
+        req: gqlContext.req,
+        res: gqlContext.req.res,
+      };
+    }
+    case 'http': {
+      const http = context.switchToHttp();
+      return {
+        req: http.getRequest<Request>(),
+        res: http.getResponse<Response>(),
+      };
+    }
+    case 'ws': {
+      const ws = context.switchToWs();
+      const req = ws.getClient().handshake;
+
+      const cookies = req?.headers?.cookie;
+      // patch cookies to match auth guard logic
+      if (typeof cookies === 'string') {
+        req.cookies = cookies
+          .split(';')
+          .map(v => v.split('='))
+          .reduce(
+            (acc, v) => {
+              acc[decodeURIComponent(v[0].trim())] = decodeURIComponent(
+                v[1].trim()
+              );
+              return acc;
+            },
+            {} as Record<string, string>
+          );
+      }
+
+      return { req };
+    }
+    default:
+      throw new Error('Unknown context type for getting request and response');
+  }
+}
+
+export function getRequestResponseFromHost(host: ArgumentsHost) {
+  switch (host.getType<GqlContextType>()) {
+    case 'graphql': {
+      const gqlContext = GqlArgumentsHost.create(host).getContext<{
+        req: Request;
+      }>();
+      return {
+        req: gqlContext.req,
+        res: gqlContext.req.res,
+      };
+    }
+    case 'http': {
+      const http = host.switchToHttp();
+      return {
+        req: http.getRequest<Request>(),
+        res: http.getResponse<Response>(),
+      };
+    }
+    default:
+      throw new Error('Unknown host type for getting request and response');
+  }
+}
+
+export function getRequestFromHost(host: ArgumentsHost) {
+  return getRequestResponseFromHost(host).req;
+}

packages/backend/server/src/fundamentals/utils/types.ts

@@ -0,0 +1,62 @@
+import { Readable } from 'node:stream';
+
+export type ConstructorOf<T> = {
+  new (): T;
+};
+
+export function ApplyType<T>(): ConstructorOf<T> {
+  // @ts-expect-error used to fake the type of config
+  return class Inner implements T {
+    constructor() {}
+  };
+}
+
+export type DeepPartial<T> = T extends Array<infer U>
+  ? DeepPartial<U>[]
+  : T extends ReadonlyArray<infer U>
+    ? ReadonlyArray<DeepPartial<U>>
+    : T extends object
+      ? {
+          [K in keyof T]?: DeepPartial<T[K]>;
+        }
+      : T;
+
+type Join<Prefix, Suffixes> = Prefix extends string | number
+  ? Suffixes extends string | number
+    ? Prefix extends ''
+      ? Suffixes
+      : `${Prefix}.${Suffixes}`
+    : never
+  : never;
+
+export type PrimitiveType =
+  | string
+  | number
+  | boolean
+  | symbol
+  | null
+  | undefined;
+
+export type LeafPaths<
+  T,
+  Path extends string = '',
+  MaxDepth extends string = '...',
+  Depth extends string = '',
+> = Depth extends MaxDepth
+  ? never
+  : T extends Record<string | number, any>
+    ? {
+        [K in keyof T]-?: K extends string | number
+          ? T[K] extends PrimitiveType
+            ? K
+            : Join<K, LeafPaths<T[K], Path, MaxDepth, `${Depth}.`>>
+          : never;
+      }[keyof T]
+    : never;
+
+export interface FileUpload {
+  filename: string;
+  mimetype: string;
+  encoding: string;
+  createReadStream: () => Readable;
+}