chat design

listify-client/src/app/assistant/assistant-chat.component.html

@@ -10,7 +10,10 @@
   <div class="message-list" aria-live="polite">
     @for (message of messages(); track $index) {
       <article class="message" [class.user-message]="message.role === 'user'">
-        <p>{{ message.content }}</p>
+        <div
+          class="message-content"
+          [innerHTML]="formatMessage(message.content)"
+        ></div>
 
         @if (message.actions?.length) {
           <div class="action-list">

listify-client/src/app/assistant/assistant-chat.component.scss

@@ -68,10 +68,45 @@
   color: var(--mat-sys-on-surface);
 }
 
-.message p {
-  margin: 0;
+.message-content {
+  display: grid;
+  gap: 0.5rem;
   overflow-wrap: anywhere;
-  line-height: 1.4;
+  line-height: 1.45;
+}
+
+.message-content :where(p, h3, h4, h5, ol, ul) {
+  margin: 0;
+}
+
+.message-content :where(h3, h4, h5) {
+  font-size: 0.98rem;
+  font-weight: 600;
+}
+
+.message-content :where(ol, ul) {
+  display: grid;
+  gap: 0.35rem;
+  padding-left: 1.25rem;
+}
+
+.message-content li {
+  overflow-wrap: anywhere;
+}
+
+.message-content hr {
+  width: 100%;
+  margin: 0.15rem 0;
+  border: 0;
+  border-top: 1px solid color-mix(in srgb, var(--mat-sys-outline-variant) 75%, transparent);
+}
+
+.message-content code {
+  padding: 0.08rem 0.25rem;
+  border-radius: 4px;
+  background: color-mix(in srgb, var(--mat-sys-outline-variant) 22%, transparent);
+  font-family: ui-monospace, SFMono-Regular, Consolas, 'Liberation Mono', monospace;
+  font-size: 0.9em;
 }
 
 .action-list {

listify-client/src/app/assistant/assistant-chat.component.ts

@@ -103,4 +103,93 @@ export class AssistantChatComponent {
 
     return `Item hinzugefuegt: ${action.itemTitle}`;
   }
+
+  protected formatMessage(content: string): string {
+    const lines = this.escapeHtml(content).split(/\r?\n/);
+    const html: string[] = [];
+    let listMode: 'ol' | 'ul' | null = null;
+
+    const closeList = () => {
+      if (!listMode) {
+        return;
+      }
+
+      html.push(`</${listMode}>`);
+      listMode = null;
+    };
+
+    for (const rawLine of lines) {
+      const line = rawLine.trim();
+
+      if (!line) {
+        closeList();
+        continue;
+      }
+
+      if (/^-{3,}$/.test(line)) {
+        closeList();
+        html.push('<hr>');
+        continue;
+      }
+
+      const headingMatch = line.match(/^(#{1,3})\s+(.+)$/);
+
+      if (headingMatch) {
+        closeList();
+        const level = headingMatch[1].length + 2;
+        html.push(
+          `<h${level}>${this.formatInlineMarkdown(headingMatch[2])}</h${level}>`,
+        );
+        continue;
+      }
+
+      const orderedMatch = line.match(/^\d+\.\s+(.+)$/);
+
+      if (orderedMatch) {
+        if (listMode !== 'ol') {
+          closeList();
+          html.push('<ol>');
+          listMode = 'ol';
+        }
+
+        html.push(`<li>${this.formatInlineMarkdown(orderedMatch[1])}</li>`);
+        continue;
+      }
+
+      const unorderedMatch = line.match(/^[-*]\s+(.+)$/);
+
+      if (unorderedMatch) {
+        if (listMode !== 'ul') {
+          closeList();
+          html.push('<ul>');
+          listMode = 'ul';
+        }
+
+        html.push(`<li>${this.formatInlineMarkdown(unorderedMatch[1])}</li>`);
+        continue;
+      }
+
+      closeList();
+      html.push(`<p>${this.formatInlineMarkdown(line)}</p>`);
+    }
+
+    closeList();
+    return html.join('');
+  }
+
+  private formatInlineMarkdown(value: string): string {
+    return value
+      .replace(/\*\*(.+?)\*\*/g, '<strong>$1</strong>')
+      .replace(/\*(.+?)\*/g, '<em>$1</em>')
+      .replace(/`(.+?)`/g, '<code>$1</code>');
+  }
+
+  private escapeHtml(value: string): string {
+    return value
+      .replace(/&/g, '&amp;')
+      .replace(/</g, '&lt;')
+      .replace(/>/g, '&gt;')
+      .replace(/"/g, '&quot;')
+      .replace(/'/g, '&#39;');
+  }
 }