/**
 * TriggersPanel - ZCLAW Triggers Management UI
 *
 * Displays available ZCLAW Triggers and allows creating and toggling them.
 */

import { useState, useEffect, useCallback } from 'react';
import { useHandStore } from '../store/handStore';
import type { Trigger } from '../store/handStore';
import { CreateTriggerModal } from './CreateTriggerModal';
import {
  Zap,
  RefreshCw,
  Plus,
  Globe,
  Bell,
  MessageSquare,
  X,
} from 'lucide-react';

// === Trigger Type Config ===

const TRIGGER_TYPE_CONFIG: Record<string, { icon: typeof Zap; label: string; color: string }> = {
  webhook: { icon: Globe, label: 'Webhook', color: 'text-blue-500' },
  event: { icon: Bell, label: '事件', color: 'text-amber-500' },
  message: { icon: MessageSquare, label: '消息', color: 'text-green-500' },
  schedule: { icon: Zap, label: '定时', color: 'text-purple-500' },
  file: { icon: Zap, label: '文件', color: 'text-cyan-500' },
  manual: { icon: Zap, label: '手动', color: 'text-gray-500' },
};

interface TriggerCardProps {
  trigger: Trigger;
  onToggle: (id: string, enabled: boolean) => Promise<void>;
  onDelete: (id: string) => Promise<void>;
  isToggling: boolean;
  isDeleting: boolean;
}

function TriggerCard({ trigger, onToggle, onDelete, isToggling, isDeleting }: TriggerCardProps) {
  const handleToggle = async () => {
    await onToggle(trigger.id, !trigger.enabled);
  };

  const handleDelete = async () => {
    if (confirm(`确定要删除触发器 "${trigger.id}" 吗？`)) {
      await onDelete(trigger.id);
    }
  };

  const typeConfig = TRIGGER_TYPE_CONFIG[trigger.type] || { icon: Zap, label: trigger.type, color: 'text-gray-500' };
  const TypeIcon = typeConfig.icon;

  return (
    <div className={`bg-white dark:bg-gray-800 rounded-lg border p-4 shadow-sm transition-colors ${
      trigger.enabled
        ? 'border-green-200 dark:border-green-800'
        : 'border-gray-200 dark:border-gray-700'
    }`}>
      <div className="flex items-center justify-between">
        <div className="flex-1 min-w-0">
          <div className="flex items-center gap-2">
            <TypeIcon className={`w-4 h-4 ${typeConfig.color}`} />
            <h3 className="font-medium text-gray-900 dark:text-white truncate">{trigger.id}</h3>
            <span className={`w-2 h-2 rounded-full flex-shrink-0 ${
              trigger.enabled ? 'bg-green-500' : 'bg-gray-400'
            }`} />
          </div>
          <div className="flex items-center gap-2 mt-1">
            <span className="text-xs px-2 py-0.5 rounded bg-gray-100 dark:bg-gray-700 text-gray-600 dark:text-gray-400">
              {typeConfig.label}
            </span>
            <span className={`text-xs ${trigger.enabled ? 'text-green-600 dark:text-green-400' : 'text-gray-500 dark:text-gray-400'}`}>
              {trigger.enabled ? '已启用' : '已禁用'}
            </span>
          </div>
        </div>
        <div className="flex items-center gap-2 flex-shrink-0">
          <button
            onClick={handleDelete}
            disabled={isDeleting}
            className="p-1.5 text-gray-400 hover:text-red-500 rounded-md disabled:opacity-50"
            title="删除"
          >
            <X className="w-4 h-4" />
          </button>
          <button
            onClick={handleToggle}
            disabled={isToggling || isDeleting}
            className={`relative inline-flex h-6 w-11 items-center rounded-full transition-colors focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2 ${
              trigger.enabled ? 'bg-blue-600' : 'bg-gray-300 dark:bg-gray-600'
            } ${(isToggling || isDeleting) ? 'opacity-50 cursor-not-allowed' : ''}`}
            title={trigger.enabled ? '点击禁用' : '点击启用'}
          >
            <span
              className={`inline-block h-4 w-4 transform rounded-full bg-white transition-transform ${
                trigger.enabled ? 'translate-x-6' : 'translate-x-1'
              }`}
            />
          </button>
        </div>
      </div>
    </div>
  );
}

export function TriggersPanel() {
  const triggers = useHandStore((s) => s.triggers);
  const loadTriggers = useHandStore((s) => s.loadTriggers);
  const updateTrigger = useHandStore((s) => s.updateTrigger);
  const deleteTrigger = useHandStore((s) => s.deleteTrigger);
  const isLoading = useHandStore((s) => s.isLoading);
  const [togglingTrigger, setTogglingTrigger] = useState<string | null>(null);
  const [deletingTrigger, setDeletingTrigger] = useState<string | null>(null);
  const [refreshing, setRefreshing] = useState(false);
  const [isCreateModalOpen, setIsCreateModalOpen] = useState(false);

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

  const handleToggle = useCallback(async (id: string, enabled: boolean) => {
    setTogglingTrigger(id);
    try {
      await updateTrigger(id, { enabled });
      await loadTriggers();
    } catch (error) {
      console.error('Failed to toggle trigger:', error);
    } finally {
      setTogglingTrigger(null);
    }
  }, [updateTrigger, loadTriggers]);

  const handleDelete = useCallback(async (id: string) => {
    setDeletingTrigger(id);
    try {
      await deleteTrigger(id);
      await loadTriggers();
    } catch (error) {
      console.error('Failed to delete trigger:', error);
    } finally {
      setDeletingTrigger(null);
    }
  }, [deleteTrigger, loadTriggers]);

  const handleRefresh = useCallback(async () => {
    setRefreshing(true);
    try {
      await loadTriggers();
    } finally {
      setRefreshing(false);
    }
  }, [loadTriggers]);

  const handleCreateSuccess = useCallback(() => {
    loadTriggers();
  }, [loadTriggers]);

  if (isLoading && triggers.length === 0) {
    return (
      <div className="p-4 text-center text-gray-500 dark:text-gray-400">
        加载中...
      </div>
    );
  }

  const enabledCount = triggers.filter(t => t.enabled).length;
  const totalCount = triggers.length;

  return (
    <>
      <div className="space-y-4">
        <div className="flex items-center justify-between">
          <div className="flex items-center gap-2">
            <h2 className="text-lg font-semibold text-gray-900 dark:text-white">
              事件触发器
            </h2>
            <span className="text-sm text-gray-500 dark:text-gray-400">
              {enabledCount}/{totalCount} 已启用
            </span>
          </div>
          <div className="flex items-center gap-2">
            <button
              onClick={handleRefresh}
              disabled={refreshing}
              className="text-sm text-blue-600 dark:text-blue-400 hover:underline disabled:opacity-50 flex items-center gap-1"
            >
              <RefreshCw className={`w-3.5 h-3.5 ${refreshing ? 'animate-spin' : ''}`} />
              {refreshing ? '刷新中...' : '刷新'}
            </button>
            <button
              onClick={() => setIsCreateModalOpen(true)}
              className="flex items-center gap-1.5 px-3 py-1.5 text-sm bg-amber-600 text-white rounded-lg hover:bg-amber-700 transition-colors"
            >
              <Plus className="w-4 h-4" />
              新建触发器
            </button>
          </div>
        </div>

        {triggers.length === 0 ? (
          <div className="p-8 text-center bg-white dark:bg-gray-800 rounded-lg border border-gray-200 dark:border-gray-700">
            <div className="w-12 h-12 bg-amber-100 dark:bg-amber-900/30 rounded-full flex items-center justify-center mx-auto mb-3">
              <Zap className="w-6 h-6 text-amber-600 dark:text-amber-400" />
            </div>
            <p className="text-sm text-gray-500 dark:text-gray-400 mb-2">暂无事件触发器</p>
            <p className="text-xs text-gray-400 dark:text-gray-500 mb-4 max-w-sm mx-auto">
              事件触发器在系统事件（如收到消息、文件更改或 API webhook）发生时触发代理执行。
            </p>
            <button
              onClick={() => setIsCreateModalOpen(true)}
              className="inline-flex items-center gap-1.5 px-3 py-1.5 text-sm bg-amber-600 text-white rounded-lg hover:bg-amber-700 transition-colors"
            >
              <Plus className="w-4 h-4" />
              创建事件触发器
            </button>
          </div>
        ) : (
          <div className="grid gap-3">
            {triggers.map((trigger) => (
              <TriggerCard
                key={trigger.id}
                trigger={trigger}
                onToggle={handleToggle}
                onDelete={handleDelete}
                isToggling={togglingTrigger === trigger.id}
                isDeleting={deletingTrigger === trigger.id}
              />
            ))}
          </div>
        )}
      </div>

      <CreateTriggerModal
        isOpen={isCreateModalOpen}
        onClose={() => setIsCreateModalOpen(false)}
        onSuccess={handleCreateSuccess}
      />
    </>
  );
}

export default TriggersPanel;