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import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Observable } from 'rxjs';
import { switchMap, concatMap, map, toArray } from 'rxjs/operators';
export interface AzureDevOpsAccessInfo {
username: string;
personalAccessToken: string;
organization: string;
project: string;
}
export interface WiqlWorkItemResult {
id: number;
url: string;
}
export interface WiqlResult {
workItems: WiqlWorkItemResult[];
}
export interface WorkItemResult {
id: number;
fields: { [name: string]: any };
}
export interface WorkItemTypeResult {
icon: {
url: string
};
}
export interface WorkItem {
id: number;
title: string;
closed: boolean;
detailUrl: string;
iconUrl: string;
}
@Injectable({
providedIn: 'root'
})
export class TodoListService {
public static titleFieldName = 'System.Title';
public static stateFieldName = 'System.State';
public static typeFieldName = 'System.WorkItemType';
constructor(private client: HttpClient) { }
private getAzureDevOpsAccessInfo(): Observable<AzureDevOpsAccessInfo> {
return this.client.get<AzureDevOpsAccessInfo>('/api/TodoPage/AzureDevOpsAccessInfo');
}
private getItemIconUrl(baseUrl: string, headers: HttpHeaders, type: string): Observable<string> {
return this.client.get<WorkItemTypeResult>(`${baseUrl}_apis/wit/workitemtypes/${encodeURIComponent(type)}?api-version=5.0`, {
headers: headers
}).pipe(
map(result => result.icon.url)
);
}
getWorkItemList(): Observable<WorkItem[]> {
return this.getAzureDevOpsAccessInfo().pipe(
switchMap(
accessInfo => {
const baseUrl = `https://dev.azure.com/${accessInfo.organization}/${accessInfo.project}/`;
const headers = new HttpHeaders({
'Accept': 'application/json',
'Authorization': `Basic ${btoa(accessInfo.username + ':' + accessInfo.personalAccessToken)}`
});
return this.client.post<WiqlResult>(
`${baseUrl}_apis/wit/wiql?api-version=5.0`, {
query: 'SELECT [System.Id] FROM workitems WHERE [System.TeamProject] = @project'
}, { headers: headers }).pipe(
switchMap(result => result.workItems),
concatMap(result => this.client.get<WorkItemResult>(result.url, { headers: headers })),
concatMap(result => this.getItemIconUrl(baseUrl, headers, result.fields[TodoListService.typeFieldName]).pipe(
map(iconResult => <WorkItem>{
id: result.id,
title: <string>result.fields[TodoListService.titleFieldName],
closed: ((<string>result.fields[TodoListService.stateFieldName]).toLowerCase() === 'closed'),
detailUrl: `${baseUrl}_workitems/edit/${result.id}/`,
iconUrl: iconResult
}))),
toArray()
);
}
)
);
}
}
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