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import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { SharedModule } from '../../../shared/shared-module';
import { DisotService } from '../../../core/services/disot.service';
import { SignatureService } from '../../../core/services/signature.service';
import { CasService } from '../../../core/services/cas.service';
import { ContentHash } from '../../../core/domain/interfaces/content.interface';
import { DisotEntry, DisotEntryType } from '../../../core/domain/interfaces/disot.interface';
@Component({
selector: 'app-disot-entry',
standalone: true,
imports: [CommonModule, SharedModule, FormsModule],
template: `
<div class="disot-entry">
<h2>Create DISOT Entry</h2>
<!-- Content Selection Modal -->
<app-content-selection-modal
*ngIf="showContentModal"
(contentSelected)="onContentSelected($event)"
(closed)="showContentModal = false"
></app-content-selection-modal>
<!-- Author Selection Modal (Reusing content selection for authors) -->
<app-content-selection-modal
*ngIf="showAuthorModal"
[title]="'Select Author Entry'"
[searchPlaceholder]="'Search by public key or entry ID...'"
[filterByContentType]="'author'"
(contentSelected)="onAuthorSelected($event)"
(closed)="showAuthorModal = false"
></app-content-selection-modal>
<!-- Previous Version Selection Modal -->
<app-content-selection-modal
*ngIf="showPreviousVersionModal"
[title]="'Select Previous Version'"
[searchPlaceholder]="'Search by entry ID or content hash...'"
(contentSelected)="onPreviousVersionSelected($event)"
(closed)="showPreviousVersionModal = false"
></app-content-selection-modal>
<div class="form-section">
<h3>Content Information</h3>
<div *ngIf="contentHash" class="content-info">
<p><strong>Algorithm:</strong> {{ contentHash.algorithm | uppercase }}</p>
<p><strong>Hash:</strong> <code>{{ contentHash.value }}</code></p>
<button (click)="clearContent()" class="clear-button">Clear Selection</button>
</div>
<div *ngIf="!contentHash" class="no-content">
<p>No content selected. Please select content from the content list.</p>
<button (click)="selectContent()" class="select-button">Select Content</button>
</div>
</div>
<div class="form-section">
<h3>Entry Type</h3>
<select [(ngModel)]="selectedType" class="type-select">
<option *ngFor="let type of entryTypes" [value]="type">
{{ formatEntryType(type) }}
</option>
</select>
</div>
<div class="form-section">
<h3>Signing Key</h3>
<div class="key-section">
<textarea
[(ngModel)]="privateKey"
placeholder="Enter your private key..."
rows="3"
class="key-input"
[disabled]="isCreating"
></textarea>
<button
(click)="generateKeyPair()"
[disabled]="isCreating"
class="generate-button"
>
Generate New Key Pair
</button>
<div *ngIf="publicKey" class="public-key-display">
<p><strong>Public Key:</strong></p>
<code>{{ publicKey }}</code>
</div>
</div>
</div>
<div class="form-section" *ngIf="selectedType === 'blog_post'">
<h3>Blog Post Content</h3>
<textarea
[(ngModel)]="blogPostContent"
placeholder="Enter your blog post content..."
rows="6"
class="blog-input"
[disabled]="isCreating"
></textarea>
</div>
<div class="form-section">
<h3>Author (Optional)</h3>
<div *ngIf="selectedAuthor" class="content-info">
<p><strong>Author ID:</strong> <code>{{ selectedAuthor }}</code></p>
<button (click)="clearAuthor()" class="clear-button">Clear Selection</button>
</div>
<div *ngIf="!selectedAuthor" class="no-content">
<p>No author selected. Optionally select an author entry.</p>
<button (click)="selectAuthor()" class="select-button">Select Author</button>
</div>
</div>
<div class="form-section">
<h3>Previous Version (Optional)</h3>
<div *ngIf="selectedPreviousVersion" class="content-info">
<p><strong>Previous Version ID:</strong> <code>{{ selectedPreviousVersion }}</code></p>
<button (click)="clearPreviousVersion()" class="clear-button">Clear Selection</button>
</div>
<div *ngIf="!selectedPreviousVersion" class="no-content">
<p>No previous version selected. Optionally link to a previous version.</p>
<button (click)="selectPreviousVersion()" class="select-button">Select Previous Version</button>
</div>
</div>
<button
(click)="createEntry()"
[disabled]="!contentHash || !privateKey || isCreating"
class="create-button"
>
{{ isCreating ? 'Creating...' : 'Create Entry' }}
</button>
<div *ngIf="errorMessage" class="error-message">
{{ errorMessage }}
</div>
<div *ngIf="createdEntry" class="success-section">
<h3>Entry Created Successfully!</h3>
<div class="entry-details">
<p><strong>Entry ID:</strong> <code>{{ createdEntry.id }}</code></p>
<p><strong>Type:</strong> {{ formatEntryType(createdEntry.type) }}</p>
<p><strong>Timestamp:</strong> {{ createdEntry.timestamp | date:'medium' }}</p>
<p><strong>Public Key:</strong> <code>{{ createdEntry.signature.publicKey }}</code></p>
<p><strong>Signature:</strong> <code>{{ createdEntry.signature.value }}</code></p>
</div>
</div>
<div class="entries-section" *ngIf="previousEntries.length > 0">
<h3>Previous Entries</h3>
<div class="entries-list">
<div *ngFor="let entry of previousEntries" class="entry-item">
<div class="entry-header">
<div class="entry-info">
<p><strong>Type:</strong> {{ formatEntryType(entry.type) }}</p>
<p><strong>Time:</strong> {{ entry.timestamp | date:'short' }}</p>
<p><strong>ID:</strong> <code class="small-code">{{ entry.id }}</code></p>
<p><strong>Content Hash:</strong> <code class="small-code">{{ entry.contentHash.value }}</code></p>
</div>
<div class="entry-actions">
<button
(click)="toggleEntryPreview(entry)"
class="preview-entry-button"
[disabled]="getEntryPreview(entry.id)?.isLoading"
>
{{ getEntryPreview(entry.id)?.isLoading ? 'Loading...' : (getEntryPreview(entry.id)?.previewData ? 'Hide Preview' : 'Show Preview') }}
</button>
</div>
</div>
<div *ngIf="getEntryPreview(entry.id)?.previewData" class="entry-preview-section">
<div class="entry-preview-controls">
<label>Preview as: </label>
<select [(ngModel)]="getEntryPreview(entry.id)!.previewType" (change)="updateEntryPreview(entry)" class="preview-type-select">
<option value="text">Text</option>
<option value="json">JSON</option>
<option value="hex">Hex</option>
<option value="base64">Base64</option>
<option value="image">Image</option>
</select>
<span *ngIf="getEntryPreview(entry.id)?.detectedType" class="detected-type">(Detected: {{ getEntryPreview(entry.id)?.detectedType }})</span>
</div>
<div class="entry-preview" [ngClass]="'preview-' + getEntryPreview(entry.id)?.previewType">
<pre *ngIf="getEntryPreview(entry.id)?.previewType === 'json'">{{ getEntryPreview(entry.id)?.previewData }}</pre>
<code *ngIf="getEntryPreview(entry.id)?.previewType === 'hex' || getEntryPreview(entry.id)?.previewType === 'base64'">{{ getEntryPreview(entry.id)?.previewData }}</code>
<p *ngIf="getEntryPreview(entry.id)?.previewType === 'text'">{{ getEntryPreview(entry.id)?.previewData }}</p>
<img *ngIf="getEntryPreview(entry.id)?.previewType === 'image'" [src]="getEntryPreview(entry.id)?.previewData" alt="Preview" />
</div>
</div>
</div>
</div>
</div>
</div>
`,
styles: [`
.disot-entry {
padding: 20px;
max-width: 800px;
margin: 0 auto;
}
.form-section {
margin-bottom: 25px;
padding: 20px;
background-color: #f9f9f9;
border-radius: 8px;
}
.form-section h3 {
margin-top: 0;
margin-bottom: 15px;
color: #333;
}
.content-info, .no-content {
padding: 15px;
background-color: #fff;
border: 1px solid #e0e0e0;
border-radius: 4px;
}
.content-info p {
margin: 5px 0;
}
.content-info code {
background-color: #e9ecef;
padding: 2px 4px;
border-radius: 3px;
font-family: monospace;
word-break: break-all;
}
.no-content {
color: #666;
font-style: italic;
}
.type-select {
width: 100%;
padding: 10px;
font-size: 16px;
border: 1px solid #ddd;
border-radius: 4px;
background-color: white;
}
.key-section {
display: flex;
flex-direction: column;
gap: 10px;
}
.key-input {
width: 100%;
padding: 10px;
font-family: monospace;
font-size: 14px;
border: 1px solid #ddd;
border-radius: 4px;
resize: vertical;
}
.generate-button {
align-self: flex-start;
padding: 8px 16px;
background-color: #6c757d;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
}
.generate-button:hover:not(:disabled) {
background-color: #5a6268;
}
.clear-button, .select-button {
margin-top: 10px;
padding: 8px 16px;
border: none;
border-radius: 4px;
cursor: pointer;
}
.clear-button {
background-color: #dc3545;
color: white;
}
.clear-button:hover {
background-color: #c82333;
}
.select-button {
background-color: #007bff;
color: white;
}
.select-button:hover {
background-color: #0056b3;
}
.public-key-display {
margin-top: 15px;
padding: 10px;
background-color: #e9ecef;
border-radius: 4px;
}
.public-key-display p {
margin: 0 0 5px 0;
}
.public-key-display code {
display: block;
word-break: break-all;
font-family: monospace;
font-size: 12px;
}
.blog-input {
width: 100%;
padding: 10px;
font-size: 14px;
border: 1px solid #ddd;
border-radius: 4px;
resize: vertical;
}
.create-button {
width: 100%;
padding: 12px;
font-size: 18px;
background-color: #28a745;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
}
.create-button:hover:not(:disabled) {
background-color: #218838;
}
.create-button:disabled {
background-color: #6c757d;
cursor: not-allowed;
}
.error-message {
margin-top: 15px;
padding: 15px;
background-color: #f8d7da;
color: #721c24;
border-radius: 4px;
}
.success-section {
margin-top: 20px;
padding: 20px;
background-color: #d4edda;
border-radius: 8px;
}
.success-section h3 {
margin-top: 0;
color: #155724;
}
.entry-details {
background-color: #fff;
padding: 15px;
border-radius: 4px;
margin-top: 10px;
}
.entry-details p {
margin: 8px 0;
word-break: break-all;
}
.entry-details code {
background-color: #e9ecef;
padding: 2px 4px;
border-radius: 3px;
font-family: monospace;
font-size: 12px;
}
.entries-section {
margin-top: 30px;
padding: 20px;
background-color: #f9f9f9;
border-radius: 8px;
}
.entries-section h3 {
margin-top: 0;
margin-bottom: 15px;
color: #333;
}
.entries-list {
display: grid;
gap: 10px;
}
.entry-item {
background-color: #fff;
padding: 10px;
border: 1px solid #e0e0e0;
border-radius: 4px;
}
.entry-item p {
margin: 5px 0;
font-size: 14px;
}
.small-code {
font-size: 11px !important;
word-break: break-all;
}
.entry-header {
display: flex;
justify-content: space-between;
align-items: flex-start;
gap: 15px;
}
.entry-info {
flex: 1;
}
.entry-info p {
margin: 5px 0;
font-size: 14px;
}
.entry-actions {
flex-shrink: 0;
}
.preview-entry-button {
padding: 6px 12px;
background-color: #6c757d;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 12px;
transition: background-color 0.2s;
}
.preview-entry-button:hover:not(:disabled) {
background-color: #5a6268;
}
.preview-entry-button:disabled {
opacity: 0.6;
cursor: not-allowed;
}
.entry-preview-section {
margin-top: 15px;
padding: 15px;
background-color: #f5f5f5;
border-radius: 4px;
}
.entry-preview-controls {
margin-bottom: 10px;
display: flex;
align-items: center;
gap: 10px;
font-size: 14px;
}
.entry-preview-controls .preview-type-select {
padding: 4px 8px;
border: 1px solid #ddd;
border-radius: 4px;
font-size: 14px;
}
.entry-preview-controls .detected-type {
color: #666;
font-style: italic;
font-size: 12px;
}
.entry-preview {
padding: 10px;
background-color: #fff;
border: 1px solid #e0e0e0;
border-radius: 4px;
max-height: 200px;
overflow-y: auto;
font-size: 14px;
}
.entry-preview pre {
margin: 0;
white-space: pre-wrap;
word-wrap: break-word;
}
.entry-preview code {
display: block;
font-family: monospace;
word-break: break-all;
}
.entry-preview img {
max-width: 100%;
height: auto;
}
.entry-preview.preview-hex code,
.entry-preview.preview-base64 code {
font-size: 12px;
line-height: 1.4;
}
`]
})
export class DisotEntryComponent implements OnInit {
@Input() contentHash: ContentHash | null = null;
@Output() entryCreated = new EventEmitter<DisotEntry>();
selectedType = DisotEntryType.DOCUMENT;
privateKey = '';
publicKey = '';
blogPostContent = '';
isCreating = false;
errorMessage = '';
createdEntry: DisotEntry | null = null;
previousEntries: DisotEntry[] = [];
showContentModal = false;
showAuthorModal = false;
showPreviousVersionModal = false;
selectedAuthor: string | null = null;
selectedPreviousVersion: string | null = null;
entryPreviews = new Map<string, {
previewData: string | null;
previewType: 'text' | 'json' | 'hex' | 'base64' | 'image' | null;
detectedType?: string;
isLoading?: boolean;
}>();
entryTypes = [
DisotEntryType.BLOG_POST,
DisotEntryType.DOCUMENT,
DisotEntryType.IMAGE,
DisotEntryType.SIGNATURE
];
constructor(
private disotService: DisotService,
private signatureService: SignatureService,
private casService: CasService
) {}
ngOnInit(): void {
this.loadPreviousEntries();
}
async generateKeyPair(): Promise<void> {
try {
const keyPair = await this.signatureService.generateKeyPair();
this.privateKey = keyPair.privateKey;
this.publicKey = keyPair.publicKey;
this.errorMessage = '';
} catch (error) {
this.errorMessage = 'Failed to generate key pair';
}
}
async createEntry(): Promise<void> {
if (!this.privateKey) {
this.errorMessage = 'Please enter or generate a private key';
return;
}
// For blog posts, we need to create the content first
if (this.selectedType === DisotEntryType.BLOG_POST) {
Iif (!this.blogPostContent.trim()) {
this.errorMessage = 'Please enter blog post content';
return;
}
// Blog posts don't need existing content, they create their own
} else {
// Other types need existing content
if (!this.contentHash) {
this.errorMessage = 'Please select content first';
return;
}
}
this.isCreating = true;
this.errorMessage = '';
try {
let hashToUse = this.contentHash;
// For blog posts, create the content first
if (this.selectedType === DisotEntryType.BLOG_POST) {
const blogData = {
blogPost: this.blogPostContent
};
const jsonContent = JSON.stringify(blogData);
const contentData = new TextEncoder().encode(jsonContent);
// Store the blog post content
hashToUse = await this.casService.store({ data: contentData });
}
Iif (!hashToUse) {
throw new Error('No content hash available');
}
// Build metadata with author and previous version if provided
const metadata: Record<string, any> = {};
if (this.selectedAuthor) {
metadata['author'] = this.selectedAuthor;
}
if (this.selectedPreviousVersion) {
metadata['previousVersion'] = this.selectedPreviousVersion;
}
this.createdEntry = await this.disotService.createEntry(
hashToUse,
this.selectedType,
this.privateKey,
metadata
);
this.entryCreated.emit(this.createdEntry);
// Reload previous entries
await this.loadPreviousEntries();
} catch (error) {
this.errorMessage = `Failed to create entry: ${error instanceof Error ? error.message : 'Unknown error'}`;
this.createdEntry = null;
} finally {
this.isCreating = false;
}
}
formatEntryType(type: DisotEntryType): string {
return type.replace(/_/g, ' ').replace(/\b\w/g, l => l.toUpperCase());
}
clearContent(): void {
this.contentHash = null;
}
selectContent(): void {
// Show content selection modal
this.showContentModal = true;
}
onContentSelected(hash: ContentHash): void {
this.contentHash = hash;
this.showContentModal = false;
}
selectAuthor(): void {
this.showAuthorModal = true;
}
onAuthorSelected(hash: ContentHash): void {
// For now, we'll use the hash value as the author ID
// In a real implementation, you might want to look up the entry ID
this.selectedAuthor = hash.value;
this.showAuthorModal = false;
}
clearAuthor(): void {
this.selectedAuthor = null;
}
selectPreviousVersion(): void {
this.showPreviousVersionModal = true;
}
onPreviousVersionSelected(hash: ContentHash): void {
// For now, we'll use the hash value as the previous version ID
// In a real implementation, you might want to look up the entry ID
this.selectedPreviousVersion = hash.value;
this.showPreviousVersionModal = false;
}
clearPreviousVersion(): void {
this.selectedPreviousVersion = null;
}
async loadPreviousEntries(): Promise<void> {
try {
this.previousEntries = await this.disotService.listEntries();
} catch (error) {
console.error('Failed to load previous entries:', error);
}
}
getEntryPreview(entryId: string) {
return this.entryPreviews.get(entryId);
}
async toggleEntryPreview(entry: DisotEntry): Promise<void> {
const preview = this.entryPreviews.get(entry.id);
if (preview?.previewData) {
// Hide preview
this.entryPreviews.delete(entry.id);
} else {
// Load preview
await this.loadEntryPreview(entry);
}
}
async loadEntryPreview(entry: DisotEntry): Promise<void> {
const preview = this.entryPreviews.get(entry.id) || {
previewData: null,
previewType: null,
isLoading: false
};
Iif (preview.isLoading) return;
preview.isLoading = true;
this.entryPreviews.set(entry.id, preview);
try {
const content = await this.casService.retrieve(entry.contentHash);
// Detect content type
const detectedType = this.detectContentType(content.data);
preview.detectedType = detectedType;
// Set initial preview type based on detection
preview.previewType = this.getInitialPreviewType(detectedType, content.data);
// Generate preview based on type
this.updateEntryPreviewData(entry.id, content.data);
} catch (error) {
console.error('Failed to preview entry content:', error);
preview.previewData = 'Failed to load content';
preview.previewType = 'text';
} finally {
preview.isLoading = false;
this.entryPreviews.set(entry.id, preview);
}
}
private detectContentType(data: Uint8Array): string {
// Check for common file signatures
Iif (data.length >= 4) {
const header = Array.from(data.slice(0, 4)).map(b => b.toString(16).padStart(2, '0')).join('');
// PNG
Iif (header === '89504e47') return 'image/png';
// JPEG
Iif (header.startsWith('ffd8ff')) return 'image/jpeg';
// GIF
Iif (header.startsWith('47494638')) return 'image/gif';
// PDF
Iif (header === '25504446') return 'application/pdf';
}
// Try to decode as text
try {
const text = new TextDecoder('utf-8', { fatal: true }).decode(data.slice(0, 1000));
// Check if it's JSON
try {
JSON.parse(text);
return 'application/json';
} catch {
// Not JSON, but is text
return 'text/plain';
}
} catch {
// Not valid UTF-8, treat as binary
return 'application/octet-stream';
}
}
private getInitialPreviewType(detectedType: string, data: Uint8Array): 'text' | 'json' | 'hex' | 'base64' | 'image' {
Iif (detectedType.startsWith('image/')) return 'image';
Iif (detectedType === 'application/json') return 'json';
Iif (detectedType === 'text/plain') return 'text';
// For binary data, default to hex if small, base64 if larger
return data.length <= 256 ? 'hex' : 'base64';
}
updateEntryPreview(entry: DisotEntry): void {
const preview = this.entryPreviews.get(entry.id);
Iif (!preview?.previewData) return;
this.casService.retrieve(entry.contentHash).then(content => {
this.updateEntryPreviewData(entry.id, content.data);
}).catch(error => {
console.error('Failed to update entry preview:', error);
});
}
private updateEntryPreviewData(entryId: string, data: Uint8Array): void {
const preview = this.entryPreviews.get(entryId);
Iif (!preview) return;
const maxSize = 1000;
switch (preview.previewType) {
case 'text':
try {
const text = new TextDecoder().decode(data);
preview.previewData = text.length > maxSize
? text.substring(0, maxSize) + '...'
: text;
} catch {
preview.previewData = 'Unable to decode as text';
}
break;
case 'json':
try {
const text = new TextDecoder().decode(data);
const json = JSON.parse(text);
preview.previewData = JSON.stringify(json, null, 2);
Iif (preview.previewData.length > maxSize) {
preview.previewData = preview.previewData.substring(0, maxSize) + '...';
}
} catch {
preview.previewData = 'Invalid JSON';
}
break;
case 'hex':
const hexBytes = Math.min(data.length, 256);
preview.previewData = Array.from(data.slice(0, hexBytes))
.map(b => b.toString(16).padStart(2, '0'))
.join(' ')
.toUpperCase();
Iif (data.length > hexBytes) {
preview.previewData += ' ...';
}
break;
case 'base64':
const base64Bytes = Math.min(data.length, 1000);
preview.previewData = btoa(String.fromCharCode(...data.slice(0, base64Bytes)));
Iif (data.length > base64Bytes) {
preview.previewData += '...';
}
break;
case 'image':
// Create data URL for image
const blob = new Blob([data]);
const reader = new FileReader();
reader.onload = () => {
preview.previewData = reader.result as string;
this.entryPreviews.set(entryId, preview);
};
reader.readAsDataURL(blob);
return; // Don't set the preview here, it will be set in the FileReader callback
}
this.entryPreviews.set(entryId, preview);
}
} |