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import { Injectable } from '@angular/core'
import { HttpClient, HttpHeaders } from '@angular/common/http'
import { Observable, throwError } from 'rxjs'
import { retry, catchError, map } from 'rxjs/operators'
import { Recipe } from '../DataModels/recipe'
export interface Status {
Code: number;
Msg: string;
}
export interface MsgList {
Status: Status;
Data: number[];
}
export interface Msg {
Status: Status;
Data: Recipe;
}
@Injectable({ providedIn: 'root' })
/* BackendService class based on tutorial at:
* <https://www.positronx.io/angular-8-httpclient-http-tutorial-build-consume-restful-api/>
*/
export class BackendService {
apiURL = 'http://api.recipebuddy.xyz:8888'
constructor( private http: HttpClient)
{
}
httpOptions = {headers: new HttpHeaders(
{'Content-Type':'application/json'}
)}
getRecipes(): Observable<number[]>
{
return this.http.get<MsgList>(this.apiURL + '/recipes')
.pipe (
retry(1),
map(msg => msg.Data),
catchError(this.handleError)
)
}
getRecipe(id): Observable<Recipe>
{
return this.http.get<Msg>(this.apiURL + '/recipes/' + id)
.pipe (
retry(1),
map(msg => msg.Data),
catchError(this.handleError)
)
}
createRecipe(data): Observable<Recipe>
{
return this.http.post<Recipe>(this.apiURL + '/recipes',
JSON.stringify(data), this.httpOptions)
}
updateRecipe(data): Observable<Recipe>
{
return this.http.put<Recipe>(this.apiURL + '/recipes/' + data.id,
JSON.stringify(data), this.httpOptions)
}
deleteRecipe(id): Observable<Msg>
{
return this.http.delete<Msg>(this.apiURL + '/recipes/' + id)
.pipe (
retry(1),
catchError(this.handleError)
)
}
handleError(error) {
let errMsg = '';
if (error.error instanceof ErrorEvent) {
errMsg = error.error.message;
} else {
errMsg = 'Error API';
}
console.log(errMsg)
window.alert(errMsg)
return throwError(errMsg);
}
}
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