import React from 'react';
import { ThemeToggle } from './ThemeToggle';
import { ThemePreference } from '../hooks/useTheme';
import { GitHubStarsButton } from './GitHubStarsButton';
import { useSpinningFavicon } from '../hooks/useSpinningFavicon';

interface HeaderProps {
  isConnected: boolean;
  projects: string[];
  sources: string[];
  currentFilter: string;
  currentSource: string;
  onFilterChange: (filter: string) => void;
  onSourceChange: (source: string) => void;
  isProcessing: boolean;
  queueDepth: number;
  themePreference: ThemePreference;
  onThemeChange: (theme: ThemePreference) => void;
  onContextPreviewToggle: () => void;
}

function formatSourceLabel(source: string): string {
  if (source === 'all') return 'All';
  if (source === 'claude') return 'Claude';
  if (source === 'codex') return 'Codex';
  return source.charAt(0).toUpperCase() + source.slice(1);
}

function buildSourceTabs(sources: string[]): string[] {
  const merged = ['all', 'claude', 'codex', ...sources];
  return Array.from(new Set(merged.filter(Boolean)));
}

export function Header({
  isConnected,
  projects,
  sources,
  currentFilter,
  currentSource,
  onFilterChange,
  onSourceChange,
  isProcessing,
  queueDepth,
  themePreference,
  onThemeChange,
  onContextPreviewToggle
}: HeaderProps) {
  useSpinningFavicon(isProcessing);
  const availableSources = buildSourceTabs(sources);

  return (
    <div className="header">
      <div className="header-main">
        <h1>
          <div style={{ position: 'relative', display: 'inline-block' }}>
            <img src="claude-mem-logomark.webp" alt="" className={`logomark ${isProcessing ? 'spinning' : ''}`} />
            {queueDepth > 0 && (
              <div className="queue-bubble">
                {queueDepth}
              </div>
            )}
          </div>
          <span className="logo-text">claude-mem</span>
        </h1>
        <div className="source-tabs" role="tablist" aria-label="Context source tabs">
          {availableSources.map(source => (
            <button
              key={source}
              type="button"
              className={`source-tab ${currentSource === source ? 'active' : ''}`}
              onClick={() => onSourceChange(source)}
              aria-pressed={currentSource === source}
            >
              {formatSourceLabel(source)}
            </button>
          ))}
        </div>
      </div>
      <div className="status">
        <a
          href="https://docs.claude-mem.ai"
          target="_blank"
          rel="noopener noreferrer"
          className="icon-link"
          title="Documentation"
        >
          <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
            <path d="M4 19.5A2.5 2.5 0 0 1 6.5 17H20"></path>
            <path d="M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z"></path>
          </svg>
        </a>
        <a
          href="https://x.com/Claude_Memory"
          target="_blank"
          rel="noopener noreferrer"
          className="icon-link"
          title="Follow us on X"
        >
          <svg width="18" height="18" viewBox="0 0 24 24" fill="currentColor">
            <path d="M18.244 2.25h3.308l-7.227 8.26 8.502 11.24H16.17l-5.214-6.817L4.99 21.75H1.68l7.73-8.835L1.254 2.25H8.08l4.713 6.231zm-1.161 17.52h1.833L7.084 4.126H5.117z"/>
          </svg>
        </a>
        <a
          href="https://discord.gg/J4wttp9vDu"
          target="_blank"
          rel="noopener noreferrer"
          className="icon-link"
          title="Join our Discord community"
        >
          <svg width="18" height="18" viewBox="0 0 24 24" fill="currentColor">
            <path d="M20.317 4.37a19.791 19.791 0 0 0-4.885-1.515a.074.074 0 0 0-.079.037c-.21.375-.444.864-.608 1.25a18.27 18.27 0 0 0-5.487 0a12.64 12.64 0 0 0-.617-1.25a.077.077 0 0 0-.079-.037A19.736 19.736 0 0 0 3.677 4.37a.07.07 0 0 0-.032.027C.533 9.046-.32 13.58.099 18.057a.082.082 0 0 0 .031.057a19.9 19.9 0 0 0 5.993 3.03a.078.078 0 0 0 .084-.028a14.09 14.09 0 0 0 1.226-1.994a.076.076 0 0 0-.041-.106a13.107 13.107 0 0 1-1.872-.892a.077.077 0 0 1-.008-.128a10.2 10.2 0 0 0 .372-.292a.074.074 0 0 1 .077-.01c3.928 1.793 8.18 1.793 12.062 0a.074.074 0 0 1 .078.01c.12.098.246.198.373.292a.077.077 0 0 1-.006.127a12.299 12.299 0 0 1-1.873.892a.077.077 0 0 0-.041.107c.36.698.772 1.362 1.225 1.993a.076.076 0 0 0 .084.028a19.839 19.839 0 0 0 6.002-3.03a.077.077 0 0 0 .032-.054c.5-5.177-.838-9.674-3.549-13.66a.061.061 0 0 0-.031-.03zM8.02 15.33c-1.183 0-2.157-1.085-2.157-2.419c0-1.333.956-2.419 2.157-2.419c1.21 0 2.176 1.096 2.157 2.42c0 1.333-.956 2.418-2.157 2.418zm7.975 0c-1.183 0-2.157-1.085-2.157-2.419c0-1.333.955-2.419 2.157-2.419c1.21 0 2.176 1.096 2.157 2.42c0 1.333-.946 2.418-2.157 2.418z"/>
          </svg>
        </a>
        <GitHubStarsButton username="thedotmack" repo="claude-mem" />
        <select
          value={currentFilter}
          onChange={e => onFilterChange(e.target.value)}
        >
          <option value="">All Projects</option>
          {projects.map(project => (
            <option key={project} value={project}>{project}</option>
          ))}
        </select>
        <ThemeToggle
          preference={themePreference}
          onThemeChange={onThemeChange}
        />
        <button
          className="settings-btn"
          onClick={onContextPreviewToggle}
          title="Settings"
        >
          <svg className="settings-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
            <path d="M12.22 2h-.44a2 2 0 0 0-2 2v.18a2 2 0 0 1-1 1.73l-.43.25a2 2 0 0 1-2 0l-.15-.08a2 2 0 0 0-2.73.73l-.22.38a2 2 0 0 0 .73 2.73l.15.1a2 2 0 0 1 1 1.72v.51a2 2 0 0 1-1 1.74l-.15.09a2 2 0 0 0-.73 2.73l.22.38a2 2 0 0 0 2.73.73l.15-.08a2 2 0 0 1 2 0l.43.25a2 2 0 0 1 1 1.73V20a2 2 0 0 0 2 2h.44a2 2 0 0 0 2-2v-.18a2 2 0 0 1 1-1.73l.43-.25a2 2 0 0 1 2 0l.15.08a2 2 0 0 0 2.73-.73l.22-.39a2 2 0 0 0-.73-2.73l-.15-.08a2 2 0 0 1-1-1.74v-.5a2 2 0 0 1 1-1.74l.15-.09a2 2 0 0 0 .73-2.73l-.22-.38a2 2 0 0 0-2.73-.73l-.15.08a2 2 0 0 1-2 0l-.43-.25a2 2 0 0 1-1-1.73V4a2 2 0 0 0-2-2z"></path>
            <circle cx="12" cy="12" r="3"></circle>
          </svg>
        </button>
      </div>
    </div>
  );
}
