From 88aae783fd4ad72913c80e3fa541fa1f98da9387 Mon Sep 17 00:00:00 2001
From: Enno Gotthold <egotthold@suse.de>
Date: Thu, 18 Jul 2024 17:19:30 +0200
Subject: [PATCH] Cobbler-Frontend: Add UI for signatures

---
 .../src/app/app-routing.module.ts             |   2 +
 .../manage-menu/manage-menu.component.html    |   4 +
 .../app/signatures/signatures.component.html  |  48 +++++
 .../app/signatures/signatures.component.scss  |  19 ++
 .../signatures/signatures.component.spec.ts   |  44 +++++
 .../app/signatures/signatures.component.ts    | 186 ++++++++++++++++++
 6 files changed, 303 insertions(+)
 create mode 100644 projects/cobbler-frontend/src/app/signatures/signatures.component.html
 create mode 100644 projects/cobbler-frontend/src/app/signatures/signatures.component.scss
 create mode 100644 projects/cobbler-frontend/src/app/signatures/signatures.component.spec.ts
 create mode 100644 projects/cobbler-frontend/src/app/signatures/signatures.component.ts

diff --git a/projects/cobbler-frontend/src/app/app-routing.module.ts b/projects/cobbler-frontend/src/app/app-routing.module.ts
index 0180703..f8f96ab 100644
--- a/projects/cobbler-frontend/src/app/app-routing.module.ts
+++ b/projects/cobbler-frontend/src/app/app-routing.module.ts
@@ -24,6 +24,7 @@ import { NotFoundComponent } from './not-found/not-found.component';
 import { AuthGuardService } from './services/auth-guard.service';
 import { SettingsViewComponent } from './settings/view/settings-view.component';
 import { UnauthorizedComponent } from './unauthorized/unauthorized.component';
+import {SignaturesComponent} from "./signatures/signatures.component";
 
 
 export const routes: Routes = [
@@ -51,6 +52,7 @@ export const routes: Routes = [
   {path: 'status', component: StatusComponent, canActivate: [AuthGuardService]},
   {path: 'hardlink', component: HardlinkComponent, canActivate: [AuthGuardService]},
   {path: 'events', component: AppEventsComponent, canActivate: [AuthGuardService]},
+  {path: 'signatures', component: SignaturesComponent, canActivate: [AuthGuardService]},
   {path: '404', component: NotFoundComponent},
   {path: '**', redirectTo: '/404'},
 ];
diff --git a/projects/cobbler-frontend/src/app/manage-menu/manage-menu.component.html b/projects/cobbler-frontend/src/app/manage-menu/manage-menu.component.html
index f89e7be..5237291 100644
--- a/projects/cobbler-frontend/src/app/manage-menu/manage-menu.component.html
+++ b/projects/cobbler-frontend/src/app/manage-menu/manage-menu.component.html
@@ -149,6 +149,10 @@ <h2 matSubheader>Cobbler</h2>
         <b class="symbol">&#8646;</b>
         Events</a
       >
+      <a mat-list-item class="nav-link" [routerLink]="['/signatures']">
+        <b class="symbol">&#8646;</b>
+        Signatures</a
+      >
       <a
         mat-list-item
         class="nav-link"
diff --git a/projects/cobbler-frontend/src/app/signatures/signatures.component.html b/projects/cobbler-frontend/src/app/signatures/signatures.component.html
new file mode 100644
index 0000000..ea1db63
--- /dev/null
+++ b/projects/cobbler-frontend/src/app/signatures/signatures.component.html
@@ -0,0 +1,48 @@
+<div class="title-table">
+  <div class="title-row">
+    <h1 class="title title-cell-text">Signatures</h1>
+    <span class="title-cell-button">
+      <button mat-icon-button (click)="this.updateSignatures()"><mat-icon>refresh</mat-icon></button>
+    </span>
+  </div>
+</div>
+
+<mat-spinner *ngIf="isLoading" style="margin:0 auto;"></mat-spinner>
+<ng-container *ngIf="!isLoading">
+  <mat-tree [dataSource]="dataSource" [treeControl]="treeControl">
+    <!-- This is the tree node template for leaf nodes -->
+    <mat-tree-node *matTreeNodeDef="let node" matTreeNodePadding>
+      <!-- use a disabled button to provide padding for tree leaf -->
+      <button mat-icon-button disabled></button>
+      {{ node.data }}
+    </mat-tree-node>
+    <!-- This is the tree node template for expandable nodes -->
+    <mat-tree-node *matTreeNodeDef="let node;when: hasChild" matTreeNodePadding>
+      <button mat-icon-button matTreeNodeToggle
+              [attr.aria-label]="'Toggle ' + node.data">
+        <mat-icon class="mat-icon-rtl-mirror">
+          {{ treeControl.isExpanded(node) ? 'expand_more' : 'chevron_right' }}
+        </mat-icon>
+      </button>
+      {{ node.data }}
+    </mat-tree-node>
+    <!-- This is the tree node template for expandable nodes with an OS version as data -->
+    <mat-tree-node *matTreeNodeDef="let node;when: hasOsVersion" matTreeNodePadding>
+      <button mat-icon-button disabled></button>
+      <table mat-table [dataSource]="node.data" class="mat-elevation-z8">
+        @for (column of columns; track column) {
+          <ng-container [matColumnDef]="column.columnDef">
+            <th mat-header-cell *matHeaderCellDef>
+              {{ column.header }}
+            </th>
+            <td mat-cell *matCellDef="let row">
+              {{ column.cell(row) }}
+            </td>
+          </ng-container>
+        }
+        <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
+        <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
+      </table>
+    </mat-tree-node>
+  </mat-tree>
+</ng-container>
diff --git a/projects/cobbler-frontend/src/app/signatures/signatures.component.scss b/projects/cobbler-frontend/src/app/signatures/signatures.component.scss
new file mode 100644
index 0000000..93cb137
--- /dev/null
+++ b/projects/cobbler-frontend/src/app/signatures/signatures.component.scss
@@ -0,0 +1,19 @@
+.title-table {
+  display: table;
+  width: 100%;
+}
+
+.title-row {
+  display: table-cell;
+  width: 100%;
+}
+
+.title-cell-text {
+  display: table-cell;
+  width: 100%;
+  vertical-align: middle;
+}
+
+.title-cell-button {
+  display: table-cell;
+}
diff --git a/projects/cobbler-frontend/src/app/signatures/signatures.component.spec.ts b/projects/cobbler-frontend/src/app/signatures/signatures.component.spec.ts
new file mode 100644
index 0000000..26f2090
--- /dev/null
+++ b/projects/cobbler-frontend/src/app/signatures/signatures.component.spec.ts
@@ -0,0 +1,44 @@
+import {provideHttpClient} from '@angular/common/http';
+import {provideHttpClientTesting} from '@angular/common/http/testing';
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+import {MatDividerModule} from '@angular/material/divider';
+import {MatIconModule} from '@angular/material/icon';
+import {MatTableModule} from '@angular/material/table';
+import {MatTreeModule} from '@angular/material/tree';
+import {COBBLER_URL} from 'cobbler-api';
+
+import { SignaturesComponent } from './signatures.component';
+
+describe('SignaturesComponent', () => {
+  let component: SignaturesComponent;
+  let fixture: ComponentFixture<SignaturesComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [
+        SignaturesComponent,
+        MatTreeModule,
+        MatIconModule,
+        MatTableModule,
+        MatDividerModule,
+      ],
+      providers: [
+        provideHttpClient(),
+        provideHttpClientTesting(),
+        {
+          provide: COBBLER_URL,
+          useValue: new URL('http://localhost/cobbler_api')
+        },
+      ]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(SignaturesComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});
diff --git a/projects/cobbler-frontend/src/app/signatures/signatures.component.ts b/projects/cobbler-frontend/src/app/signatures/signatures.component.ts
new file mode 100644
index 0000000..9e3b726
--- /dev/null
+++ b/projects/cobbler-frontend/src/app/signatures/signatures.component.ts
@@ -0,0 +1,186 @@
+import {AsyncPipe, NgForOf, NgIf} from '@angular/common';
+import {Component, OnInit} from '@angular/core';
+import {MatDivider} from '@angular/material/divider';
+import {MatList, MatListItem} from '@angular/material/list';
+import {MatProgressSpinner} from '@angular/material/progress-spinner';
+import {MatSnackBar} from '@angular/material/snack-bar';
+import {
+  MatCell, MatCellDef,
+  MatColumnDef,
+  MatHeaderCell,
+  MatHeaderCellDef,
+  MatHeaderRow, MatHeaderRowDef,
+  MatRow, MatRowDef,
+  MatTable
+} from '@angular/material/table';
+import {filter, repeat, take} from 'rxjs/operators';
+import {UserService} from '../services/user.service';
+import {CobblerApiService} from 'cobbler-api';
+import {
+  MatTree,
+  MatTreeFlatDataSource,
+  MatTreeFlattener,
+  MatTreeNode, MatTreeNodeDef,
+  MatTreeNodePadding,
+  MatTreeNodeToggle
+} from '@angular/material/tree';
+import {FlatTreeControl} from '@angular/cdk/tree';
+import {MatIcon} from '@angular/material/icon';
+import {MatIconButton} from '@angular/material/button';
+
+interface TableRow {
+  key: string;
+  value: any;
+}
+
+/**
+ * Food data with nested structure.
+ * Each node has a name and an optional list of children.
+ */
+interface OsNode {
+  data: string | Array<TableRow>;
+  children?: OsNode[];
+}
+
+/** Flat node with expandable and level information */
+interface OsBreedFlatNode {
+  expandable: boolean;
+  data: string | Array<TableRow>;
+  level: number;
+}
+
+@Component({
+  selector: 'cobbler-signatures',
+  standalone: true,
+  imports: [
+    MatTree,
+    MatTreeNode,
+    MatIcon,
+    MatIconButton,
+    MatTreeNodeToggle,
+    MatTreeNodePadding,
+    MatTreeNodeDef,
+    MatTable,
+    MatHeaderCell,
+    MatCell,
+    MatHeaderRow,
+    MatRow,
+    MatColumnDef,
+    MatHeaderCellDef,
+    MatCellDef,
+    MatHeaderRowDef,
+    MatRowDef,
+    MatDivider,
+    AsyncPipe,
+    MatList,
+    MatListItem,
+    MatProgressSpinner,
+    NgForOf,
+    NgIf
+  ],
+  templateUrl: './signatures.component.html',
+  styleUrl: './signatures.component.scss'
+})
+export class SignaturesComponent implements OnInit {
+  // Table
+  columns = [
+    {
+      columnDef: 'key',
+      header: 'Attribute',
+      cell: (element: TableRow) => `${element.key}`,
+    },
+    {
+      columnDef: 'value',
+      header: 'Value',
+      cell: (element: TableRow) => `${element.value}`,
+    },
+  ];
+
+  displayedColumns = this.columns.map(c => c.columnDef);
+
+  // Tree
+  private _transformer = (node: OsNode, level: number) => {
+    return {
+      expandable: !!node.children && node.children.length > 0,
+      data: node.data,
+      level: level,
+    };
+  };
+
+  treeControl = new FlatTreeControl<OsBreedFlatNode>(
+    node => node.level,
+    node => node.expandable,
+  );
+
+  treeFlattener = new MatTreeFlattener(
+    this._transformer,
+    node => node.level,
+    node => node.expandable,
+    node => node.children,
+  );
+  dataSource = new MatTreeFlatDataSource(this.treeControl, this.treeFlattener);
+
+  // Spinner
+  public isLoading = true;
+
+  constructor(
+    public userService: UserService,
+    private cobblerApiService: CobblerApiService,
+    private _snackBar: MatSnackBar,
+  ) {
+  }
+
+  ngOnInit(): void {
+    this.generateSignatureUiData();
+  }
+
+  hasChild = (_: number, node: OsBreedFlatNode) => node.expandable;
+
+  hasOsVersion = (_: number, node: OsBreedFlatNode) => typeof node.data !== 'string';
+
+  generateSignatureUiData(): void {
+    this.cobblerApiService.get_signatures(this.userService.token).subscribe(value => {
+      const newData: Array<OsNode> = [];
+      for (const k in value.breeds) {
+        const children: Array<OsNode> = [];
+        for (const j in value.breeds[k]) {
+          const osVersionData: Array<TableRow> = [];
+          for (const i in value.breeds[k][j]) {
+            osVersionData.push({key: i, value: value.breeds[k][j][i]});
+          }
+          children.push({data: j, children: [{data: osVersionData, children: []}]});
+        }
+        newData.push({data: k, children: children});
+      }
+      this.dataSource.data = newData;
+      this.isLoading = false
+    }, error => {
+      // HTML encode the error message since it originates from XML
+      this._snackBar.open(this.toHTML(error.message), 'Close');
+    });
+  }
+
+  updateSignatures(): void {
+    this.isLoading = true
+    this.cobblerApiService.background_signature_update(this.userService.token).subscribe(
+      value => {
+        this.cobblerApiService.get_task_status(value).pipe(
+          repeat(),
+          filter(data => data.state === "failed" || data.state === "complete"),
+          take(1)
+        ).subscribe(value1 => {
+          this.isLoading = false
+          this.generateSignatureUiData()
+        })
+      },
+      error => {
+        // HTML encode the error message since it originates from XML
+        this._snackBar.open(this.toHTML(error.message), 'Close');
+      });
+  }
+
+  toHTML(input: string): any {
+    // FIXME: Deduplicate method
+    return new DOMParser().parseFromString(input, 'text/html').documentElement.textContent;
+  }
+}