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| author | crupest <crupest@outlook.com> | 2020-07-26 15:02:55 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2020-07-26 15:02:55 +0800 |
| commit | b78d21a524f7a11ad29b4bd230f23825f80c3ed7 (patch) | |
| tree | 88bfe8d4c5298f61a90c501933784885ec9ce77f /Timeline/ClientApp/src/app/http/common.ts | |
| parent | 886ab2a222bc503156542988edc7be5062f6e7b1 (diff) | |
| download | timeline-b78d21a524f7a11ad29b4bd230f23825f80c3ed7.tar.gz timeline-b78d21a524f7a11ad29b4bd230f23825f80c3ed7.tar.bz2 timeline-b78d21a524f7a11ad29b4bd230f23825f80c3ed7.zip | |
Merge front end repo
Diffstat (limited to 'Timeline/ClientApp/src/app/http/common.ts')
| -rw-r--r-- | Timeline/ClientApp/src/app/http/common.ts | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/Timeline/ClientApp/src/app/http/common.ts b/Timeline/ClientApp/src/app/http/common.ts new file mode 100644 index 00000000..8fb8eb69 --- /dev/null +++ b/Timeline/ClientApp/src/app/http/common.ts @@ -0,0 +1,140 @@ +import { AxiosError, AxiosResponse } from 'axios';
+
+export const apiBaseUrl = '/api';
+
+export function base64(blob: Blob): Promise<string> {
+ return new Promise<string>((resolve) => {
+ const reader = new FileReader();
+ reader.onload = function () {
+ resolve((reader.result as string).replace(/^data:.+;base64,/, ''));
+ };
+ reader.readAsDataURL(blob);
+ });
+}
+
+export function extractStatusCode(error: AxiosError): number | null {
+ if (error.isAxiosError) {
+ const code = error?.response?.status;
+ if (typeof code === 'number') {
+ return code;
+ }
+ }
+ return null;
+}
+
+export interface CommonErrorResponse {
+ code: number;
+ message: string;
+}
+
+export function extractErrorCode(
+ error: AxiosError<CommonErrorResponse>
+): number | null {
+ if (error.isAxiosError) {
+ const code = error.response?.data?.code;
+ if (typeof code === 'number') {
+ return code;
+ }
+ }
+ return null;
+}
+
+export class HttpNetworkError extends Error {
+ constructor(public innerError?: AxiosError) {
+ super();
+ }
+}
+
+export class NotModified {}
+
+export interface BlobWithEtag {
+ data: Blob;
+ etag: string;
+}
+
+export function extractResponseData<T>(res: AxiosResponse<T>): T {
+ return res.data;
+}
+
+export function catchIfStatusCodeIs<
+ TResult,
+ TErrorHandlerResult extends TResult | PromiseLike<TResult> | null | undefined
+>(
+ statusCode: number,
+ errorHandler: (error: AxiosError<CommonErrorResponse>) => TErrorHandlerResult
+): (error: AxiosError<CommonErrorResponse>) => TErrorHandlerResult {
+ return (error: AxiosError<CommonErrorResponse>) => {
+ if (extractStatusCode(error) == statusCode) {
+ return errorHandler(error);
+ } else {
+ throw error;
+ }
+ };
+}
+
+export function convertToIfStatusCodeIs<NewError>(
+ statusCode: number,
+ newErrorType: {
+ new (innerError: AxiosError): NewError;
+ }
+): (error: AxiosError<CommonErrorResponse>) => never {
+ return catchIfStatusCodeIs(statusCode, (error) => {
+ throw new newErrorType(error);
+ });
+}
+
+export function catchIfErrorCodeIs<
+ TResult,
+ TErrorHandlerResult extends TResult | PromiseLike<TResult> | null | undefined
+>(
+ errorCode: number,
+ errorHandler: (error: AxiosError<CommonErrorResponse>) => TErrorHandlerResult
+): (error: AxiosError<CommonErrorResponse>) => TErrorHandlerResult {
+ return (error: AxiosError<CommonErrorResponse>) => {
+ if (extractErrorCode(error) == errorCode) {
+ return errorHandler(error);
+ } else {
+ throw error;
+ }
+ };
+}
+export function convertToIfErrorCodeIs<NewError>(
+ errorCode: number,
+ newErrorType: {
+ new (innerError: AxiosError): NewError;
+ }
+): (error: AxiosError<CommonErrorResponse>) => never {
+ return catchIfErrorCodeIs(errorCode, (error) => {
+ throw new newErrorType(error);
+ });
+}
+
+export function convertToNetworkError(
+ error: AxiosError<CommonErrorResponse>
+): never {
+ if (error.isAxiosError && error.response == null) {
+ throw new HttpNetworkError(error);
+ } else {
+ throw error;
+ }
+}
+
+export function convertToBlobWithEtag(res: AxiosResponse<Blob>): BlobWithEtag {
+ return {
+ data: res.data,
+ etag: (res.headers as Record<'etag', string>)['etag'],
+ };
+}
+
+export function convertToBlobWithEtagOrNotModified(
+ res: AxiosResponse<Blob>
+): BlobWithEtag | NotModified {
+ if (res.status === 304) {
+ return new NotModified();
+ } else {
+ return {
+ data: res.data,
+ etag: (res.headers as Record<'etag', string>)['etag'],
+ };
+ }
+}
|