rest-annotations

Installation

npm i rest-annotations --save

Example

import { Inject, Injectable, Injector } from '@angular/core';
import {
    RESTClient, GenerateBody, BaseUrl,
    GET, POST, PUT, PATCH, DELETE,
    Headers, Paths, Queries, Fields,
    Header, Path, Query, Field, Body
} from 'rest-annotations';
// import { AxiosRESTClient } from 'rest-annotations/axios';
// import { NodeRESTClient } from 'rest-annotations/node';
import { AngularRESTClient } from 'rest-annotations/angular';
import { Observable } from 'rxjs';

import { Todo } from './models';

@Injectable()
@BaseUrl('http://localhost:4200/api/')
// @Headers({
//     'Content-Type': 'application/x-www-form-urlencoded',
// })
// export class ApiClient extends AxiosRESTClient {
// export class ApiClient extends NodeRESTClient {
export class ApiClient extends AngularRESTClient {

    constructor(injector: Injector) {
        super(injector);
    }

    protected getDefaultHeaders() {
        return {
            'Content-Type': 'application/x-www-form-urlencoded',
            'X-Auth-Token': 'abc12356asd'
        };
    }

    @GET("todo")
    @Headers({ 'X-Auth-Token': null })
    @Queries({ pageSize: 20 })
    getTodoList(
        @Query("sort") sort?: string
    ): Promise<Todo[]> { return; }

    @GET("todo/{id}")
    getTodo(
        @Path("id") id: string
    ): Promise<Todo> { return; }

    @POST("todo")
    @Fields({ active: 1 })
    createTodo(
        @Body todo: Todo
    ): Promise<Todo> { return; }

    @PUT("todo", { generateBody: GenerateBody.Json })
    editTodo(
        @Field("id") id: string,
        @Body todo: Todo
    ): Promise<Todo> { return; }

    @DELETE("todo/{id}", { responseStrategy: 'httpResponse' })
    deleteTodo(
        @Path("id") id: string
    ): Observable<Todo> { return; }

}

For Angular

Import to your module

import { HttpClientModule } from '@angular/common/http';

@NgModule({
  imports: [
    // ...
    HttpClientModule,
  ],
  providers: [ApiClient],
})
export class AppModule { }

Using it in your component

@Component({
  selector: 'app-to-do',
  templateUrl: './to-do.component.html',
})
export class ToDoComponent {

  constructor(
    private api: ApiClient
  ) {  }
  
  // Use API
}

---

API Docs

RESTClient

Methods

• getBaseUrl(): string | Promise<string>: returns the base url of RESTClient
• getDefaultHeaders(metaHeaders?: Record<string, string | string[] | number>): Record<string, string | string[] | number> | Promise<Record<string, string | string[] | number>>: returns the default headers of RESTClient in a key-value pair
• getAuthenticationHeader(action?: string, args?: any[]): Record<string, string | string[] | number> | Promise<Record<string, string | string[] | number>>: return authentication header for @Authentication
• requestInterceptor(req: HttpRequest<any>): void: intercept api request
• responseInterceptor(response: HttpResponse<any>, responseStrategy: string): any: intercept api response
• _noop(): typing the consumer

Class decorators

• @BaseUrl(url: string): will replace getBaseUrl() of the service
• @DefaultHeaders(headers: Record<string, string | string[] | number>, overlap?: boolean): set default value for getDefaultHeaders()

SERVICE DEFAULT PARAMS

• @Headers(values: Record<string, string | string[] | number>, overlap?: boolean)
• @Queries(values: Record<string, any>, overlap?: boolean)
• @Paths(values: Record<string, string | number | { value: string | number, preserve?: boolean }>, overlap?: boolean)
• @Fields(values: Record<string, any>, overlap?: boolean)

SERVICE HEADER CUSTOMIZATION

• @HFormUrlEncoded(): set Content-Type in default headers to application/x-www-form-urlencoded
• @HJson(): set Content-Type in default headers to application/json
• @Authentication(requireAuthentication?: boolean)

Method decorators

HTTP METHOD

• @GET(url: String, opts?: RestMethodOptions)
• @POST(url: String, opts?: RestMethodOptions)
• @PUT(url: String, opts?: RestMethodOptions)
• @PATCH(url: String, opts?: RestMethodOptions)
• @DELETE(url: String, opts?: RestMethodOptions)

DEFAULT PARAMS

• @Headers(values: Record<string, string | string[] | number>)
• @Queries(values: Record<string, any>)
• @Paths(values: Record<string, string | number | { value: string | number, preserve?: boolean }>)
• @Fields(values: Record<string, any>)

HEADER CUSTOMIZATION

• @HFormUrlEncoded()
• @HJson()
• @Authentication(requireAuthentication?: boolean)

Parameter decorators

• @Path(key: string)
• @Query(key: string)
• @Header(key: string)
• @Field(key: string)
• @QueryObject
• @Body

RestMethodOptions

• generateBody: specify the function to generate the body of a request
• responseStrategy: strategy of response type, if using Angular, specify one of 'promise', 'httpResponse', 'observable', 'raw'

---

License

MIT