/**
 * TeamList - Sidebar Team List Component
 *
 * Displays a compact list of teams for the sidebar navigation.
 *
 * @module components/TeamList
 */

import { useEffect } from 'react';
import { useTeamStore } from '../store/teamStore';
import { Users, Plus, Activity, CheckCircle, AlertTriangle } from 'lucide-react';

interface TeamListProps {
  onSelectTeam?: (teamId: string) => void;
  selectedTeamId?: string;
}

export function TeamList({ onSelectTeam, selectedTeamId }: TeamListProps) {
  const { teams, loadTeams, setActiveTeam, isLoading } = useTeamStore();

  useEffect(() => {
    loadTeams();
  }, [loadTeams]);

  const handleSelectTeam = (teamId: string) => {
    const team = teams.find(t => t.id === teamId);
    if (team) {
      setActiveTeam(team);
      onSelectTeam?.(teamId);
    }
  };

  const getStatusIcon = (status: string) => {
    switch (status) {
      case 'active':
        return <Activity className="w-3 h-3 text-green-500" />;
      case 'paused':
        return <AlertTriangle className="w-3 h-3 text-yellow-500" />;
      case 'completed':
        return <CheckCircle className="w-3 h-3 text-blue-500" />;
      default:
        return <Activity className="w-3 h-3 text-gray-400" />;
    }
  };

  return (
    <div className="h-full flex flex-col">
      {/* Header */}
      <div className="p-3 border-b border-gray-200 dark:border-gray-700">
        <div className="flex items-center justify-between">
          <h3 className="text-xs font-semibold text-gray-500 dark:text-gray-400 uppercase tracking-wider">
            Teams
          </h3>
          <button
            className="p-1 hover:bg-gray-100 dark:hover:bg-gray-800 rounded"
            title="Create Team"
          >
            <Plus className="w-4 h-4 text-gray-400" />
          </button>
        </div>
      </div>

      {/* Team List */}
      <div className="flex-1 overflow-y-auto">
        {isLoading ? (
          <div className="p-4 text-center text-gray-400 text-sm">Loading...</div>
        ) : teams.length === 0 ? (
          <div className="p-4 text-center">
            <Users className="w-8 h-8 mx-auto mb-2 text-gray-300 dark:text-gray-600" />
            <p className="text-xs text-gray-400 dark:text-gray-500">
              No teams yet
            </p>
            <p className="text-xs text-gray-400 dark:text-gray-500 mt-1">
              Click + to create one
            </p>
          </div>
        ) : (
          <div className="space-y-1 p-2">
            {teams.map((team) => (
              <button
                key={team.id}
                onClick={() => handleSelectTeam(team.id)}
                className={`w-full p-2 rounded-lg text-left transition-colors ${
                  selectedTeamId === team.id
                    ? 'bg-blue-50 dark:bg-blue-900/30 border border-blue-200 dark:border-blue-800'
                    : 'hover:bg-gray-100 dark:hover:bg-gray-800'
                }`}
              >
                <div className="flex items-center gap-2">
                  {getStatusIcon(team.status)}
                  <span className="text-sm font-medium text-gray-900 dark:text-white truncate">
                    {team.name}
                  </span>
                </div>
                <div className="mt-1 flex items-center gap-2 text-xs text-gray-500 dark:text-gray-400">
                  <span className="flex items-center gap-1">
                    <Users className="w-3 h-3" />
                    {team.members.length}
                  </span>
                  <span>·</span>
                  <span>{team.tasks.length} tasks</span>
                </div>
              </button>
            ))}
          </div>
        )}
      </div>
    </div>
  );
}

export default TeamList;