-import { Injectable } from '@angular/core';
-import { Response } from '@angular/http';
-import { Observable } from 'rxjs/Observable';
+import { Injectable } from '@angular/core'
+import { Observable } from 'rxjs/Observable'
+import { HttpErrorResponse } from '@angular/common/http'
-export interface ResultList {
- data: any[];
- total: number;
-}
+import { Utils } from '../utils'
+import { ResultList } from '../../../../../shared'
@Injectable()
export class RestExtractor {
- constructor () { ; }
-
- extractDataBool(res: Response) {
- return true;
+ extractDataBool () {
+ return true
}
- extractDataList(res: Response) {
- const body = res.json();
+ applyToResultListData <T> (result: ResultList<T>, fun: Function, additionalArgs?: any[]): ResultList<T> {
+ const data: T[] = result.data
+ const newData: T[] = []
- const ret: ResultList = {
- data: body.data,
- total: body.total
- };
+ data.forEach(d => newData.push(fun.call(this, d, additionalArgs)))
- return ret;
+ return {
+ total: result.total,
+ data: newData
+ }
}
- extractDataGet(res: Response) {
- return res.json();
+ convertResultListDateToHuman <T> (result: ResultList<T>, fieldsToConvert: string[] = [ 'createdAt' ]): ResultList<T> {
+ return this.applyToResultListData(result, this.convertDateToHuman, [ fieldsToConvert ])
}
- handleError(res: Response) {
- let text = 'Server error: ';
- text += res.text();
- let json = res.json();
+ convertDateToHuman (target: object, fieldsToConvert: string[]) {
+ const source = {}
+ fieldsToConvert.forEach(field => {
+ source[field] = Utils.dateToHuman(target[field])
+ })
- const error = {
- json,
- text
- };
+ return Object.assign(target, source)
+ }
- return Observable.throw(error);
+ handleError (err: HttpErrorResponse) {
+ let errorMessage
+
+ if (err.error instanceof Error) {
+ // A client-side or network error occurred. Handle it accordingly.
+ errorMessage = err.error.message
+ console.error('An error occurred:', errorMessage)
+ } else if (err.status !== undefined) {
+ // The backend returned an unsuccessful response code.
+ // The response body may contain clues as to what went wrong,
+ errorMessage = err.error
+ console.error(`Backend returned code ${err.status}, body was: ${errorMessage}`)
+ } else {
+ errorMessage = err
+ }
+
+ return Observable.throw(errorMessage)
}
}