feat: add manage surveys component (#343)

Fixes #186

src/app/system/manage-surveys/manage-surveys.component.ts

@@ -0,0 +1,79 @@
+/** Angular Imports */
+import { Component, OnInit, ViewChild } from '@angular/core';
+import { MatTableDataSource, MatPaginator, MatSort } from '@angular/material';
+import { ActivatedRoute } from '@angular/router';
+
+/**
+ * Manage Surveys component.
+ */
+@Component({
+  selector: 'mifosx-manage-surveys',
+  templateUrl: './manage-surveys.component.html',
+  styleUrls: ['./manage-surveys.component.scss'],
+})
+export class ManageSurveysComponent implements OnInit {
+
+  /* Surveys data */
+  surveysData: any;
+  /* Columns to be displayed in manage surveys data table */
+  displayedColumns: string[] = ['key', 'name', 'description', 'countryCode', 'status', 'action'];
+  /* Data source for manage surveys data table */
+  dataSource: MatTableDataSource<any>;
+
+  /** Paginator for manage surveys table. */
+  @ViewChild(MatPaginator) paginator: MatPaginator;
+  /** Sorter for manage surveys table. */
+  @ViewChild(MatSort) sort: MatSort;
+
+  /**
+   * Retrieves the surveys data from `resolve`.
+   * @param {ActivatedRoute} route Activated Route.
+   */
+  constructor(private route: ActivatedRoute) {
+    this.route.data.subscribe(( data: { surveys: any }) => {
+      this.surveysData = data.surveys;
+    });
+  }
+
+  /**
+   * Returns whether an survey is active based on its duration
+   * @param {number} validFrom Date valid from
+   * @param {number} validTo Date valid to
+   */
+  isActive(validFrom: number, validTo: number) {
+    const curdate = new Date().getTime();
+    return (curdate > validFrom && curdate < validTo);
+  }
+
+  /**
+   * Sets the manage surveys table. And initiates button and action sort
+   */
+  ngOnInit() {
+    this.setSurveys();
+    this.dataSource.sortingDataAccessor = (item, property) => {
+      switch (property) {
+        case 'status': return this.isActive(item.validFrom, item.validTo);
+        case 'action': return this.isActive(item.validFrom, item.validTo);
+        default: return item[property];
+      }
+    };
+  }
+
+  /**
+   * Initializes the data source, paginator and sorter for surveys table.
+   */
+  setSurveys() {
+    this.dataSource = new MatTableDataSource(this.surveysData);
+    this.dataSource.paginator = this.paginator;
+    this.dataSource.sort = this.sort;
+  }
+
+  /**
+   * Filters data in surveys table based on passed value.
+   * @param {string} filterValue Value to filter data.
+   */
+  applyFilter(filterValue: string) {
+    this.dataSource.filter = filterValue.trim().toLowerCase();
+  }
+
+}