import { HttpClient, HttpErrorResponse } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable, throwError } from 'rxjs';
import { catchError, retry } from 'rxjs/operators';

@Injectable({
  providedIn: 'root'
})
export class BuildingBasicInfosService {

  constructor(
    public http: HttpClient
  ) { }


  /**
   * 单位信息的api [获取/保存]
   */
  readonly api_buildingInfo = 'api/Services/3D/BuildingBasicInfo';

  /**
   * 事态标绘(电子沙盘)的api [获取/保存]
   */
  readonly api_sandBox = "api/Services/3D/Sandboxie";


  /**
   * 获取三维信息
   */
  getBuildingBasicInfos(name: string): Observable<string> {
    return this.getInfos(this.api_buildingInfo, name);
  }
  /**
   * 保存三维信息
   * @param name 
   * @param data 
   */
  postBuildingBasicInfos(name: string, gasstationId: number, data: object): Observable<any> {
    return this.postInfos(this.api_buildingInfo, data, { name: name, gasstationId: gasstationId });
  }

  /**
   * 获取事态标绘的信息
   * @param name 
   */
  getMarkData(name: string): Observable<string> {
    return this.getInfos(this.api_sandBox, name);
  }

  /**
   * 推送事态标绘的信息
   * @param name 
   * @param data 
   */
  postMarkData(name: string, data: object): Observable<any> {
    return this.postInfos(this.api_sandBox, data, { name: name });
  }


  //#region 通用封装，新增api时调用即可，不需关心具体组装规则。若修改规则，只需修改此通用封装
  /**
 * get类api所需的固定内容
 */
  readonly c_get = "/Get";
  /**
   * post类api所需的固定内容
   */
  readonly c_post = "/PostOrPut";

  /**
   * 通用消息头
   */
  readonly headers = {
    "Content-Type": "application/json"
  };
  /**
   * 通用get 类api的封装
   * @param api 
   * @param name 
   */
  getInfos(api: string, name: string) {
    let id = { "name": name };

    return this.http.get<string>(api + this.c_get, { params: id }).pipe(
      catchError((err) => this.handleError(err))
    );
  }

  /**
   * 通用post 类api的封装
   * @param api 
   * @param name 
   * @param data 
   */
  postInfos(api: string, body: object, params = {}) {

    let headers = this.headers;

    return this.http.post<any>(api + this.c_post, `'${JSON.stringify(body)}'`, { headers, params })
      .pipe(
        catchError((err) => this.handleError(err))
      );
  }
  //#endregion





  //#region 错误捕捉

  private handleError(error: HttpErrorResponse) {
    if (error.error instanceof ErrorEvent) {
      // A client-side or network error occurred. Handle it accordingly.
      console.error('An error occurred:', error.error.message);
    } else {
      // The backend returned an unsuccessful response code.
      // The response body may contain clues as to what went wrong.
      if (error.status == 404) {
        console.log("404===" + error.error);
      }
      else {
        console.error(
          error + `Backend returned code ${error.status}, ` +
          `body was: ${error.error}`);
      }

    }
    // Return an observable with a user-facing error message.
    return throwError(
      error);
  }
  //#endregion
}