import React, { useState } from 'react'
import {
  FaPlus,
  FaSearch,
  FaFilter,
  FaUsers,
  FaUser,
  FaEdit,
  FaTrash,
  FaEye,
  FaPhone,
  FaEnvelope,
  FaAward,
  FaClock,
} from 'react-icons/fa'
import { TeamRoleEnum } from '../../../types/common'
import { mockMaintenanceTeams } from '../../../mocks/mockMaintenanceTeams'
import NewTeamModal from './NewTeamModal'
import ViewTeamModal from './ViewTeamModal'
import EditTeamModal from './EditTeamModal'
import AssignWorkOrderModal from './AssignWorkOrderModal'
import TeamStatusChangeModal from './TeamStatusChangeModal'
import Widget from '../../../components/common/Widget'
import { Team } from '../../../types/common'
import { getTeamRoleColor, getTeamRoleIcon, getTeamRoleText } from '../../../utils/erp'
import { Container } from '@/components/shared'

const MaintenanceTeams: React.FC = () => {
  const [searchTerm, setSearchTerm] = useState('')
  const [roleFilter, setRoleFilter] = useState<TeamRoleEnum | 'all'>('all')
  const [statusFilter, setStatusFilter] = useState<'active' | 'inactive' | 'all'>('all')

  // Modal states
  const [showNewTeamModal, setShowNewTeamModal] = useState(false)
  const [showViewTeamModal, setShowViewTeamModal] = useState(false)
  const [showEditTeamModal, setShowEditTeamModal] = useState(false)
  const [showAssignWorkOrderModal, setShowAssignWorkOrderModal] = useState(false)
  const [showStatusChangeModal, setShowStatusChangeModal] = useState(false)

  // Selected data
  const [viewingTeam, setViewingTeam] = useState<Team | null>(null)
  const [editingTeam, setEditingTeam] = useState<Team | null>(null)
  const [selectedTeams, setSelectedTeams] = useState<string[]>([])

  // Mock data - replace with actual API calls
  const [teams, setTeams] = useState<Team[]>(mockMaintenanceTeams)

  const filteredTeams = teams.filter((team) => {
    const matchesSearch =
      team.code.toLowerCase().includes(searchTerm.toLowerCase()) ||
      team.name.toLowerCase().includes(searchTerm.toLowerCase()) ||
      team.members.some(
        (member) =>
          member.employee?.firstName.toLowerCase().includes(searchTerm.toLowerCase()) ||
          member.employee?.lastName.toLowerCase().includes(searchTerm.toLowerCase()),
      )
    const matchesRole =
      roleFilter === 'all' || team.members.some((member) => member.role === roleFilter)
    const matchesStatus =
      statusFilter === 'all' ||
      (statusFilter === 'active' && team.isActive) ||
      (statusFilter === 'inactive' && !team.isActive)
    return matchesSearch && matchesRole && matchesStatus
  })

  const getTeamLeader = (team: Team) => {
    return team.members.find((member) => member.role === TeamRoleEnum.Lead)
  }

  const getActiveMembers = (team: Team) => {
    return team.members.filter((member) => member.isActive)
  }

  const handleAddTeam = () => {
    setEditingTeam(null)
    setShowNewTeamModal(true)
  }

  const handleViewTeam = (team: Team) => {
    setViewingTeam(team)
    setShowViewTeamModal(true)
  }

  const handleEditTeam = (team: Team) => {
    setEditingTeam(team)
    setShowEditTeamModal(true)
  }

  const handleSelectTeam = (teamId: string) => {
    setSelectedTeams((prev) =>
      prev.includes(teamId) ? prev.filter((id) => id !== teamId) : [...prev, teamId],
    )
  }

  const handleNewTeamSave = (newTeam: Partial<Team>) => {
    if (newTeam.id) {
      setTeams((prev) => [...prev, newTeam as Team])
    }
  }

  const handleEditTeamSave = (updatedTeam: Team) => {
    setTeams((prev) => prev.map((team) => (team.id === updatedTeam.id ? updatedTeam : team)))
  }

  const handleAssignWorkOrders = (assignments: { teamId: string; planIds: string[] }[]) => {
    // Here you would typically make API calls to assign work orders
    console.log('Assigning work orders:', assignments)
    // Show success message or handle the actual assignment logic
  }

  const handleStatusChange = (teamIds: string[], newStatus: boolean, reason?: string) => {
    setTeams((prev) =>
      prev.map((team) =>
        teamIds.includes(team.id)
          ? { ...team, isActive: newStatus, lastModificationTime: new Date() }
          : team,
      ),
    )
    setSelectedTeams([])
    // Here you would typically log the status change with reason
    console.log('Status change:', { teamIds, newStatus, reason })
  }

  const selectedTeamObjects = teams.filter((team) => selectedTeams.includes(team.id))

  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">Bakım Ekipleri</h2>
            <p className="text-gray-600">Bakım ekiplerini ve üyelerini yönetin</p>
          </div>
          <button
            onClick={handleAddTeam}
            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 Ekip</span>
          </button>
        </div>

        {/* Summary Cards */}
        <div className="grid grid-cols-1 md:grid-cols-4 gap-6">
          <Widget title="Toplam Ekip" value={teams.length} color="blue" icon="FaUsers" />

          <Widget
            title="Aktif Ekip"
            value={teams.filter((t) => t.isActive).length}
            color="green"
            icon="FaCheckCircle"
          />

          <Widget
            title="Toplam Üye"
            value={teams.reduce((total, team) => total + getActiveMembers(team).length, 0)}
            color="orange"
            icon="FaUser"
          />

          <Widget
            title="Uzmanlık"
            value={teams.reduce((total, team) => total + (team.specializations?.length || 0), 0)}
            color="purple"
            icon="FaWrench"
          />
        </div>

        {/* Filters */}
        <div className="flex space-x-3">
          <div className="flex-1 relative">
            <FaSearch className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 w-4 h-4" />
            <input
              type="text"
              placeholder="Ekip veya üye ara..."
              value={searchTerm}
              onChange={(e) => setSearchTerm(e.target.value)}
              className="w-full pl-9 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={roleFilter}
              onChange={(e) => setRoleFilter(e.target.value as TeamRoleEnum | '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"
            >
              <option value="all">Tüm Roller</option>
              <option value={TeamRoleEnum.Lead}>Lider</option>
              <option value={TeamRoleEnum.Specialist}>Uzman</option>
              <option value={TeamRoleEnum.Member}>Üye</option>
            </select>
          </div>
          <div className="relative">
            <select
              value={statusFilter}
              onChange={(e) => setStatusFilter(e.target.value as 'active' | 'inactive' | '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 Durumlar</option>
              <option value="active">Aktif</option>
              <option value="inactive">Pasif</option>
            </select>
          </div>
        </div>

        {/* Teams Grid */}
        <div className="grid grid-cols-1 lg:grid-cols-2 gap-4">
          {filteredTeams.map((team) => {
            const leader = getTeamLeader(team)
            const activeMembers = getActiveMembers(team)

            return (
              <div
                key={team.id}
                className="bg-white rounded-lg shadow-md border border-gray-200 p-4 hover:shadow-lg transition-shadow"
              >
                <div className="flex items-start justify-between mb-3">
                  <div className="flex-1">
                    <div className="flex items-center space-x-2 mb-2">
                      <input
                        type="checkbox"
                        checked={selectedTeams.includes(team.id)}
                        onChange={() => handleSelectTeam(team.id)}
                        className="rounded border-gray-300 text-blue-600 focus:ring-blue-500 mt-0.5"
                      />
                      <h3 className="text-lg font-semibold text-gray-900">{team.code}</h3>
                      <span
                        className={`px-2 py-1 rounded-full text-xs font-medium ${
                          team.isActive
                            ? 'bg-green-100 text-green-800'
                            : 'bg-gray-100 text-gray-800'
                        }`}
                      >
                        {team.isActive ? 'Aktif' : 'Pasif'}
                      </span>
                    </div>
                    <h4 className="font-medium text-gray-700 mb-1 text-sm">{team.name}</h4>
                    <p className="text-xs text-gray-500 mb-2">{team.description}</p>
                  </div>
                  <div className="flex space-x-1">
                    <button
                      onClick={() => handleViewTeam(team)}
                      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={() => handleEditTeam(team)}
                      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>
                  </div>
                </div>

                {/* Team Leader */}
                {leader && (
                  <div className="bg-purple-50 rounded-lg p-2 mb-3">
                    <div className="flex items-center space-x-3">
                      <div className="w-10 h-10 bg-purple-600 rounded-full flex items-center justify-center">
                        <FaAward className="w-5 h-5 text-white" />
                      </div>
                      <div className="flex-1">
                        <div className="flex items-center space-x-2">
                          <h5 className="font-medium text-gray-900">
                            {leader.employee?.firstName} {leader.employee?.lastName}
                          </h5>
                          <span
                            className={`px-2 py-1 rounded-full text-xs font-medium flex items-center space-x-1 ${getTeamRoleColor(
                              leader.role,
                            )}`}
                          >
                            {getTeamRoleIcon(leader.role)}
                            <span>{getTeamRoleText(leader.role)}</span>
                          </span>
                        </div>
                        <p className="text-sm text-gray-600">
                          {leader.employee?.jobPosition?.code}
                        </p>
                        <div className="flex items-center space-x-4 mt-1 text-xs text-gray-500">
                          {leader.employee?.email && (
                            <div className="flex items-center space-x-1">
                              <FaEnvelope className="w-3 h-3" />
                              <span>{leader.employee.email}</span>
                            </div>
                          )}
                          {leader.employee?.phone && (
                            <div className="flex items-center space-x-1">
                              <FaPhone className="w-3 h-3" />
                              <span>{leader.employee.phone}</span>
                            </div>
                          )}
                        </div>
                      </div>
                    </div>
                  </div>
                )}

                {/* Team Members */}
                <div className="space-y-2 mb-3">
                  <h5 className="text-xs font-medium text-gray-700">
                    Ekip Üyeleri ({activeMembers.length})
                  </h5>
                  <div className="space-y-2">
                    {activeMembers
                      .filter((member) => member.role !== TeamRoleEnum.Lead)
                      .slice(0, 3)
                      .map((member) => (
                        <div
                          key={member.id}
                          className="flex items-center space-x-2 p-1.5 bg-gray-50 rounded-lg"
                        >
                          <div className="w-8 h-8 bg-gray-400 rounded-full flex items-center justify-center">
                            <FaUser className="w-4 h-4 text-white" />
                          </div>
                          <div className="flex-1">
                            <div className="flex items-center space-x-2">
                              <span className="text-sm font-medium text-gray-900">
                                {member.employee?.firstName} {member.employee?.lastName}
                              </span>
                              <span
                                className={`px-2 py-1 rounded-full text-xs font-medium flex items-center space-x-1 ${getTeamRoleColor(
                                  member.role,
                                )}`}
                              >
                                {getTeamRoleIcon(member.role)}
                                <span>{getTeamRoleText(member.role)}</span>
                              </span>
                            </div>
                            <p className="text-xs text-gray-600">
                              {member.employee?.jobPosition?.code}
                            </p>
                          </div>
                        </div>
                      ))}
                    {activeMembers.filter((member) => member.role !== TeamRoleEnum.Lead).length >
                      3 && (
                      <div className="text-center text-xs text-gray-500 p-1.5">
                        +
                        {activeMembers.filter((member) => member.role !== TeamRoleEnum.Lead)
                          .length - 3}{' '}
                        kişi daha...
                      </div>
                    )}
                  </div>
                </div>

                {/* Specializations */}
                <div className="border-t border-gray-100 pt-2">
                  <h5 className="text-xs font-medium text-gray-700 mb-2">Uzmanlık Alanları</h5>
                  <div className="flex flex-wrap gap-1">
                    {team.specializations ??
                      [].slice(0, 6).map((specialization, index) => (
                        <span
                          key={index}
                          className="px-2 py-1 bg-blue-100 text-blue-800 text-xs rounded-full"
                        >
                          {specialization}
                        </span>
                      ))}
                    {(team.specializations?.length ?? 0) > 6 && (
                      <span className="px-2 py-1 bg-gray-100 text-gray-600 text-xs rounded-full">
                        +{(team.specializations?.length ?? 0) - 6}
                      </span>
                    )}
                  </div>
                </div>

                <div className="border-t border-gray-100 pt-2 mt-2">
                  <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>Oluşturuldu: {team.creationTime.toLocaleDateString('tr-TR')}</span>
                    </div>
                    <div className="flex items-center space-x-2">
                      <span>
                        Son Güncelleme: {team.lastModificationTime.toLocaleDateString('tr-TR')}
                      </span>
                    </div>
                  </div>
                </div>
              </div>
            )
          })}
        </div>

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

        {/* Bulk Actions */}
        {selectedTeams.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">{selectedTeams.length} ekip seçildi</span>
              <div className="flex space-x-2">
                <button
                  onClick={() => setShowAssignWorkOrderModal(true)}
                  className="bg-green-600 text-white px-2.5 py-1.5 rounded text-sm hover:bg-green-700"
                >
                  İş Emri Ata
                </button>
                <button
                  onClick={() => setShowStatusChangeModal(true)}
                  className="bg-blue-600 text-white px-2.5 py-1.5 rounded text-sm hover:bg-blue-700"
                >
                  Durum Değiştir
                </button>
                <button
                  onClick={() => setSelectedTeams([])}
                  className="bg-gray-600 text-white px-2.5 py-1.5 rounded text-sm hover:bg-gray-700"
                >
                  Temizle
                </button>
              </div>
            </div>
          </div>
        )}
      </div>

      {/* Modals */}
      <NewTeamModal
        isOpen={showNewTeamModal}
        onClose={() => setShowNewTeamModal(false)}
        onSave={handleNewTeamSave}
      />

      <ViewTeamModal
        isOpen={showViewTeamModal}
        onClose={() => setShowViewTeamModal(false)}
        onEdit={handleEditTeam}
        team={viewingTeam}
      />

      <EditTeamModal
        isOpen={showEditTeamModal}
        onClose={() => setShowEditTeamModal(false)}
        onSave={handleEditTeamSave}
        team={editingTeam}
      />

      <AssignWorkOrderModal
        isOpen={showAssignWorkOrderModal}
        onClose={() => setShowAssignWorkOrderModal(false)}
        onSave={handleAssignWorkOrders}
        selectedTeams={selectedTeamObjects}
      />

      <TeamStatusChangeModal
        isOpen={showStatusChangeModal}
        onClose={() => setShowStatusChangeModal(false)}
        onSave={handleStatusChange}
        selectedTeams={selectedTeamObjects}
      />
    </Container>
  )
}

export default MaintenanceTeams