Method addChat

src/tui/fullscreen.js:969–1028

(role, content)

  // ─── Public API ──────────────────────────────────────────────────────

  addChat(role, content) {
    this.showWelcome = false; // Dismiss welcome screen on first message

    let prefix = '';
    if (role === 'user') {
      prefix = this.theme.accent + '  USER  ' + this.theme.border + '│ ' + ANSI.reset;
    } else if (role === 'assistant') {
      prefix = this.theme.success + '   AI   ' + this.theme.border + '│ ' + ANSI.reset;
    } else {
      prefix = this.theme.muted + '  SYS   ' + this.theme.border + '│ ' + ANSI.reset;
    }
    const contPrefix = '        ' + this.theme.border + '│ ' + ANSI.reset;
    const t = this.theme;

    const rawLines = content.split('\n');
    let inCodeBlock = false;

    for (let i = 0; i < rawLines.length; i++) {
      const line = rawLines[i];

      // Code block toggle
      if (line.trim().startsWith('```')) {
        inCodeBlock = !inCodeBlock;
        const p = i === 0 ? prefix : contPrefix;
        if (inCodeBlock) {
          this.chatLines.push(p + t.border + '┌─ ' + t.muted + line.trim().slice(3) + ANSI.reset);
        } else {
          this.chatLines.push(contPrefix + t.border + '└─' + ANSI.reset);
        }
        continue;
      }

      const p = i === 0 ? prefix : contPrefix;
      const maxWidth = this.chatWidth - 10;

      if (inCodeBlock) {
        // Syntax highlight code lines
        const highlighted = this._highlightCode(line);
        this.chatLines.push(contPrefix + t.border + '│ ' + ANSI.reset + highlighted);
      } else {
        const wrapped = this._wordWrap(line, maxWidth);
        for (let j = 0; j < wrapped.length; j++) {
          this.chatLines.push((j === 0 ? p : contPrefix) + wrapped[j]);
        }
      }
    }
    this.chatLines.push(''); // spacer
    this.chatScroll = 0; // snap to bottom
    this.msgCount++;

    // Cap chatLines to prevent unbounded growth (keep last 5000 lines).
    // A very long session with verbose tool output can accumulate tens of
    // thousands of lines; rendering stays fast by only keeping recent history.
    const MAX_CHAT_LINES = 5000;
    if (this.chatLines.length > MAX_CHAT_LINES) {
      this.chatLines.splice(0, this.chatLines.length - MAX_CHAT_LINES);
    }