import React, { useState } from 'react'
import {
  FaPlus,
  FaSearch,
  FaFilter,
  FaExclamationTriangle,
  FaClock,
  FaUser,
  FaMapMarkerAlt,
  FaEdit,
  FaTrash,
  FaEye,
  FaFileAlt,
  FaCamera,
  FaPhone,
} from 'react-icons/fa'
import { NotificationStatusEnum, PmFaultNotification, PmWorkCenter } from '../../../types/pm'
import { mockFaultNotifications } from '../../../mocks/mockFaultNotifications'
import NewFaultNotificationModal from './NewFaultNotificationModal'
import ViewFaultNotificationModal from './ViewFaultNotificationModal'
import EditFaultNotificationModal from './EditFaultNotificationModal'
import CreateWorkOrderFromNotificationModal from './CreateWorkOrderFromNotificationModal'
import AssignNotificationModal from './AssignNotificationModal'
import ChangeNotificationStatusModal from './ChangeNotificationStatusModal'
import Widget from '../../../components/common/Widget'
import { PriorityEnum } from '../../../types/common'
import {
  getFaultTypeColor,
  getFaultTypeText,
  getPriorityColor,
  getPriorityText,
  getCriticalityLevelColor,
  getNotificationStatusColor,
  getNotificationStatusIcon,
  getNotificationStatusText,
} from '../../../utils/erp'
import { Container } from '@/components/shared'

interface AssignmentData {
  notificationIds: string[]
  assignedTo?: string
  teamId?: string
}

interface StatusChangeData {
  notificationIds: string[]
  status: NotificationStatusEnum
}

const FaultNotifications: React.FC = () => {
  const [searchTerm, setSearchTerm] = useState('')
  const [statusFilter, setStatusFilter] = useState<NotificationStatusEnum | 'all'>('all')
  const [priorityFilter, setPriorityFilter] = useState<PriorityEnum | 'all'>('all')
  const [showModal, setShowModal] = useState(false)
  const [editingNotification, setEditingNotification] = useState<PmFaultNotification | null>(null)
  const [viewingNotification, setViewingNotification] = useState<PmFaultNotification | null>(null)
  const [selectedNotifications, setSelectedNotifications] = useState<string[]>([])
  const [showCreateWorkOrderModal, setShowCreateWorkOrderModal] = useState(false)
  const [showAssignModal, setShowAssignModal] = useState(false)
  const [showStatusChangeModal, setShowStatusChangeModal] = useState(false)

  // Mock data - replace with actual API calls
  const [notifications, setNotifications] = useState<PmFaultNotification[]>(mockFaultNotifications)

  const filteredNotifications = notifications.filter((notification) => {
    const matchesSearch =
      notification.notificationCode.toLowerCase().includes(searchTerm.toLowerCase()) ||
      notification.title.toLowerCase().includes(searchTerm.toLowerCase()) ||
      notification.workCenter.code.toLowerCase().includes(searchTerm.toLowerCase()) ||
      notification.reportedBy.toLowerCase().includes(searchTerm.toLowerCase())
    const matchesStatus = statusFilter === 'all' || notification.status === statusFilter
    const matchesPriority = priorityFilter === 'all' || notification.priority === priorityFilter
    return matchesSearch && matchesStatus && matchesPriority
  })

  const getTimeAgo = (date: Date) => {
    const now = new Date()
    const diffInMs = now.getTime() - date.getTime()
    const diffInHours = Math.floor(diffInMs / (1000 * 60 * 60))
    const diffInDays = Math.floor(diffInMs / (1000 * 60 * 60 * 24))

    if (diffInHours < 1) {
      const diffInMinutes = Math.floor(diffInMs / (1000 * 60))
      return `${diffInMinutes} dakika önce`
    } else if (diffInHours < 24) {
      return `${diffInHours} saat önce`
    } else {
      return `${diffInDays} gün önce`
    }
  }

  const handleAddNotification = () => {
    setEditingNotification(null)
    setShowModal(true)
  }

  const handleEdit = (notification: PmFaultNotification) => {
    setEditingNotification(notification)
    setShowModal(true)
  }

  const handleView = (notification: PmFaultNotification) => {
    setViewingNotification(notification)
  }

  const handleSelectNotification = (notificationId: string) => {
    setSelectedNotifications((prev) =>
      prev.includes(notificationId)
        ? prev.filter((id) => id !== notificationId)
        : [...prev, notificationId],
    )
  }

  const handleSaveNotification = (notificationData: Partial<PmFaultNotification>) => {
    if (editingNotification) {
      // Update existing notification
      setNotifications((prev) =>
        prev.map((n) => (n.id === editingNotification.id ? { ...n, ...notificationData } : n)),
      )
    } else {
      // Add new notification
      setNotifications((prev) => [...prev, notificationData as PmFaultNotification])
    }
  }

  const handleCreateWorkOrder = () => {
    setShowCreateWorkOrderModal(true)
  }

  const handleAssignNotifications = () => {
    setShowAssignModal(true)
  }

  const handleChangeStatus = () => {
    setShowStatusChangeModal(true)
  }

  const handleWorkOrderSave = (workOrderData: PmWorkCenter) => {
    console.log('İş emri oluşturuldu:', workOrderData)
    // Here you would typically save to backend
    setSelectedNotifications([])
  }

  const handleAssignmentSave = (assignmentData: AssignmentData) => {
    console.log('Atama yapıldı:', assignmentData)
    // Here you would typically save to backend
    // Update notifications with assignment
    setNotifications((prev) =>
      prev.map((n) =>
        assignmentData.notificationIds.includes(n.id)
          ? {
              ...n,
              assignedTo: assignmentData.assignedTo,
              status: NotificationStatusEnum.Assigned,
            }
          : n,
      ),
    )
    setSelectedNotifications([])
  }

  const handleStatusChangeSave = (statusChangeData: StatusChangeData) => {
    console.log('Durum değiştirildi:', statusChangeData)
    // Here you would typically save to backend
    // Update notifications with new status
    setNotifications((prev) =>
      prev.map((n) =>
        statusChangeData.notificationIds.includes(n.id)
          ? {
              ...n,
              status: statusChangeData.status,
              lastModificationTime: new Date(),
            }
          : n,
      ),
    )
    setSelectedNotifications([])
  }

  return (
    <Container>
      <div className="space-y-2">
        {/* Header */}
        <div className="flex items-center justify-between">
          <div>
            <h2 className="text-2xl font-bold text-gray-900">Arıza Bildirimleri</h2>
            <p className="text-gray-600">İş merkezi arızalarını takip edin ve yönetin</p>
          </div>
          <button
            onClick={handleAddNotification}
            className="bg-blue-600 text-white px-3 py-1.5 rounded-lg hover:bg-blue-700 flex items-center space-x-2 text-sm"
          >
            <FaPlus className="w-4 h-4" />
            <span>Yeni Bildirim</span>
          </button>
        </div>

        {/* Summary Cards */}
        <div className="grid grid-cols-1 md:grid-cols-5 gap-4">
          <Widget
            title="Toplam"
            value={notifications.length}
            color="gray"
            icon="FaExclamationTriangle"
          />

          <Widget
            title="Açık"
            value={notifications.filter((n) => n.status === NotificationStatusEnum.Open).length}
            color="red"
            icon="FaExclamationTriangle"
          />

          <Widget
            title="Devam Ediyor"
            value={
              notifications.filter((n) => n.status === NotificationStatusEnum.InProgress).length
            }
            color="orange"
            icon="FaClock"
          />

          <Widget
            title="Çözüldü"
            value={notifications.filter((n) => n.status === NotificationStatusEnum.Resolved).length}
            color="green"
            icon="FaCheckCircle"
          />

          <Widget
            title="Acil"
            value={notifications.filter((n) => n.priority === PriorityEnum.Urgent).length}
            color="red"
            icon="FaTimesCircle"
          />
        </div>

        {/* Filters */}
        <div className="flex space-x-4">
          <div className="flex-1 relative">
            <FaSearch className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 w-5 h-5" />
            <input
              type="text"
              placeholder="Bildirim ara..."
              value={searchTerm}
              onChange={(e) => setSearchTerm(e.target.value)}
              className="w-full pl-10 pr-4 py-1.5 text-sm border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
            />
          </div>
          <div className="relative">
            <FaFilter className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 w-5 h-5" />
            <select
              value={statusFilter}
              onChange={(e) => setStatusFilter(e.target.value as NotificationStatusEnum | 'all')}
              className="pl-10 pr-4 py-1.5 text-sm border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
            >
              {Object.values(NotificationStatusEnum).map((status) => (
                <option key={status} value={status}>
                  {getNotificationStatusText(status)}
                </option>
              ))}
            </select>
          </div>
          <div className="relative">
            <select
              value={priorityFilter}
              onChange={(e) => setPriorityFilter(e.target.value as PriorityEnum | 'all')}
              className="pl-4 pr-4 py-1.5 text-sm border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
            >
              <option value="all">Tüm Öncelikler</option>
              {Object.values(PriorityEnum).map((priority) => (
                <option key={priority} value={priority}>
                  {getPriorityText(priority)}
                </option>
              ))}
            </select>
          </div>
        </div>

        {/* Notifications List */}
        <div className="space-y-3 pt-2">
          {filteredNotifications.map((notification) => (
            <div
              key={notification.id}
              className={`bg-white rounded-lg shadow-md border-l-4 p-4 hover:shadow-lg transition-shadow ${getCriticalityLevelColor(
                notification.severity,
              )}`}
            >
              <div className="flex items-start justify-between">
                <div className="flex items-start space-x-4 flex-1">
                  <input
                    type="checkbox"
                    checked={selectedNotifications.includes(notification.id)}
                    onChange={() => handleSelectNotification(notification.id)}
                    className="mt-1 rounded border-gray-300 text-blue-600 focus:ring-blue-500"
                  />

                  <div className="flex-1">
                    <div className="flex items-center space-x-3 mb-2">
                      <h3 className="text-lg font-semibold text-gray-900">
                        {notification.notificationCode}
                      </h3>
                      <span
                        className={`px-2 py-1 rounded-full text-xs font-medium flex items-center space-x-1 ${getNotificationStatusColor(
                          notification.status,
                        )}`}
                      >
                        {getNotificationStatusIcon(notification.status)}
                        <span>{getNotificationStatusText(notification.status)}</span>
                      </span>
                      <span
                        className={`px-2 py-1 rounded-full text-xs font-medium ${getPriorityColor(
                          notification.priority,
                        )}`}
                      >
                        {getPriorityText(notification.priority)}
                      </span>
                      <span
                        className={`px-2 py-1 rounded-full text-xs font-medium ${getFaultTypeColor(
                          notification.faultType,
                        )}`}
                      >
                        {getFaultTypeText(notification.faultType)}
                      </span>
                    </div>

                    <h4 className="font-medium text-gray-800 mb-2">{notification.title}</h4>
                    <p className="text-sm text-gray-600 mb-3">
                      {notification.description.length > 150
                        ? `${notification.description.substring(0, 150)}...`
                        : notification.description}
                    </p>

                    <div className="grid grid-cols-2 lg:grid-cols-4 gap-4 text-sm mb-3">
                      <div>
                        <span className="text-gray-500">İş Merkezi:</span>
                        <p className="font-medium text-gray-900">{notification.workCenter.code}</p>
                        <p className="text-xs text-gray-600">{notification.workCenter.name}</p>
                      </div>
                      <div>
                        <span className="text-gray-500">Konum:</span>
                        <p className="font-medium text-gray-900 flex items-center">
                          <FaMapMarkerAlt className="w-3 h-3 mr-1" />
                          {notification.location}
                        </p>
                      </div>
                      <div>
                        <span className="text-gray-500">Bildiren:</span>
                        <p className="font-medium text-gray-900">{notification.reportedBy}</p>
                      </div>
                      <div>
                        <span className="text-gray-500">Süre:</span>
                        <p className="font-medium text-gray-900">
                          {notification.estimatedRepairTime
                            ? `~${notification.estimatedRepairTime} dk`
                            : '-'}
                        </p>
                      </div>
                    </div>

                    {notification.assignedTo && (
                      <div className="bg-blue-50 rounded-lg p-3 mb-3">
                        <div className="flex items-center space-x-2 text-sm">
                          <FaUser className="w-4 h-4 text-blue-600" />
                          <span className="text-gray-600">Atanan:</span>
                          <span className="font-medium text-gray-900">
                            {notification.assignedTo}
                          </span>
                        </div>
                      </div>
                    )}

                    {notification.images && notification.images.length > 0 && (
                      <div className="flex items-center space-x-2 text-sm text-gray-500 mb-3">
                        <FaCamera className="w-4 h-4" />
                        <span>{notification.images.length} fotoğraf</span>
                      </div>
                    )}

                    {notification.resolutionNotes && (
                      <div className="bg-green-50 rounded-lg p-3 mb-3">
                        <div className="flex items-start space-x-2 text-sm">
                          <FaFileAlt className="w-4 h-4 text-green-600 mt-0.5" />
                          <div>
                            <span className="text-gray-600">Çözüm Notları:</span>
                            <p className="text-gray-900 mt-1">{notification.resolutionNotes}</p>
                          </div>
                        </div>
                      </div>
                    )}

                    <div className="flex items-center justify-between text-xs text-gray-500">
                      <div className="flex items-center space-x-2">
                        <FaClock className="w-3 h-3" />
                        <span>Bildirilme: {getTimeAgo(notification.reportedAt)}</span>
                      </div>
                      {notification.workOrderId && (
                        <div className="flex items-center space-x-2">
                          <span>İş Emri: {notification.workOrderId}</span>
                        </div>
                      )}
                      {notification.followUpRequired && (
                        <div className="flex items-center space-x-2 text-orange-600">
                          <FaExclamationTriangle className="w-3 h-3" />
                          <span>Takip Gerekli</span>
                        </div>
                      )}
                    </div>
                  </div>
                </div>

                <div className="flex space-x-1">
                  <button
                    onClick={() => handleView(notification)}
                    className="p-1.5 text-gray-400 hover:text-blue-600 hover:bg-blue-50 rounded-md transition-colors"
                  >
                    <FaEye className="w-4 h-4" />
                  </button>
                  <button
                    onClick={() => handleEdit(notification)}
                    className="p-1.5 text-gray-400 hover:text-green-600 hover:bg-green-50 rounded-md transition-colors"
                  >
                    <FaEdit className="w-4 h-4" />
                  </button>
                  <button className="p-1.5 text-gray-400 hover:text-red-600 hover:bg-red-50 rounded-md transition-colors">
                    <FaTrash className="w-4 h-4" />
                  </button>
                  <button className="p-1.5 text-gray-400 hover:text-green-600 hover:bg-green-50 rounded-md transition-colors">
                    <FaPhone className="w-4 h-4" />
                  </button>
                </div>
              </div>
            </div>
          ))}
        </div>

        {filteredNotifications.length === 0 && (
          <div className="text-center py-12">
            <FaExclamationTriangle className="w-16 h-16 text-gray-400 mx-auto mb-4" />
            <h3 className="text-lg font-medium text-gray-900 mb-2">Bildirim bulunamadı</h3>
            <p className="text-gray-500 mb-4">
              Arama kriterlerinizi değiştirin veya yeni bir bildirim oluşturun.
            </p>
            <button
              onClick={handleAddNotification}
              className="bg-blue-600 text-white px-4 py-2 rounded-lg hover:bg-blue-700"
            >
              Yeni Bildirim Oluştur
            </button>
          </div>
        )}

        {/* Bulk Actions */}
        {selectedNotifications.length > 0 && (
          <div className="fixed bottom-6 left-1/2 transform -translate-x-1/2 bg-white rounded-lg shadow-lg border border-gray-200 p-4">
            <div className="flex items-center space-x-4">
              <span className="text-sm text-gray-600">
                {selectedNotifications.length} bildirim seçildi
              </span>
              <div className="flex space-x-2">
                <button
                  onClick={handleCreateWorkOrder}
                  className="bg-green-600 text-white px-3 py-2 rounded text-sm hover:bg-green-700"
                >
                  İş Emri Oluştur
                </button>
                <button
                  onClick={handleAssignNotifications}
                  className="bg-blue-600 text-white px-3 py-2 rounded text-sm hover:bg-blue-700"
                >
                  Atama Yap
                </button>
                <button
                  onClick={handleChangeStatus}
                  className="bg-orange-600 text-white px-3 py-2 rounded text-sm hover:bg-orange-700"
                >
                  Durum Değiştir
                </button>
                <button
                  onClick={() => setSelectedNotifications([])}
                  className="bg-gray-600 text-white px-3 py-2 rounded text-sm hover:bg-gray-700"
                >
                  Temizle
                </button>
              </div>
            </div>
          </div>
        )}
      </div>

      {/* Modals */}
      {showModal && !editingNotification && (
        <NewFaultNotificationModal
          isOpen={showModal}
          onClose={() => setShowModal(false)}
          onSave={handleSaveNotification}
        />
      )}

      {editingNotification && (
        <EditFaultNotificationModal
          isOpen={showModal}
          onClose={() => {
            setShowModal(false)
            setEditingNotification(null)
          }}
          onSave={handleSaveNotification}
          notification={editingNotification}
        />
      )}

      {viewingNotification && (
        <ViewFaultNotificationModal
          isOpen={!!viewingNotification}
          onClose={() => setViewingNotification(null)}
          onEdit={(notification) => {
            setViewingNotification(null)
            setEditingNotification(notification)
            setShowModal(true)
          }}
          notification={viewingNotification}
        />
      )}

      {showCreateWorkOrderModal && selectedNotifications.length > 0 && (
        <CreateWorkOrderFromNotificationModal
          isOpen={showCreateWorkOrderModal}
          onClose={() => setShowCreateWorkOrderModal(false)}
          onSave={handleWorkOrderSave}
          notifications={notifications.filter((n) => selectedNotifications.includes(n.id))}
        />
      )}

      {showAssignModal && selectedNotifications.length > 0 && (
        <AssignNotificationModal
          isOpen={showAssignModal}
          onClose={() => setShowAssignModal(false)}
          onSave={handleAssignmentSave}
          notifications={notifications.filter((n) => selectedNotifications.includes(n.id))}
        />
      )}

      {showStatusChangeModal && selectedNotifications.length > 0 && (
        <ChangeNotificationStatusModal
          isOpen={showStatusChangeModal}
          onClose={() => setShowStatusChangeModal(false)}
          onSave={handleStatusChangeSave}
          notifications={notifications.filter((n) => selectedNotifications.includes(n.id))}
        />
      )}
    </Container>
  )
}

export default FaultNotifications