import React, { useEffect, useState } from 'react';
import { useMoki } from '../hooks/useMoki';
import ExcelTable from '../components/ExcelTable';
import { Plus, Search } from 'lucide-react';
import { 
  Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter, DialogDescription 
} from "@/components/ui/dialog";

// Reusing styled components locally
const DarkInput = ({ label, ...props }) => (
  <div className="space-y-1.5">
    {label && <label className="text-[10px] uppercase font-bold text-slate-500 dark:text-slate-400 tracking-wider ml-1">{label}</label>}
    <input 
      className="w-full bg-slate-50 dark:bg-[#141414] border border-slate-200 dark:border-[#333] rounded-lg px-3 py-2 text-sm text-slate-700 dark:text-slate-200 focus:outline-none focus:border-emerald-500 focus:ring-1 focus:ring-emerald-500 transition-all placeholder:text-slate-400 dark:placeholder:text-slate-700"
      {...props}
    />
  </div>
);

const DarkSelect = ({ label, options, value, onChange }) => (
  <div className="space-y-1.5">
    {label && <label className="text-[10px] uppercase font-bold text-slate-500 dark:text-slate-400 tracking-wider ml-1">{label}</label>}
    <select 
      value={value} 
      onChange={e => onChange(e.target.value)}
      className="w-full bg-slate-50 dark:bg-[#141414] border border-slate-200 dark:border-[#333] rounded-lg px-3 py-2 text-sm text-slate-700 dark:text-slate-200 focus:outline-none focus:border-emerald-500 focus:ring-1 focus:ring-emerald-500 transition-all cursor-pointer"
    >
      <option value="">Selecione...</option>
      {options.map(opt => (
        <option key={opt} value={opt}>{opt}</option>
      ))}
    </select>
  </div>
);

const DarkButton = ({ children, variant = 'primary', className = '', ...props }) => {
  const baseClass = "px-4 py-2 rounded-lg font-bold text-sm transition-all shadow-lg active:scale-95 flex items-center justify-center gap-2";
  const variants = {
    primary: "bg-emerald-600 hover:bg-emerald-500 text-white shadow-emerald-500/10",
    secondary: "bg-slate-100 dark:bg-[#2a2a2a] hover:bg-slate-200 dark:hover:bg-[#333] text-slate-700 dark:text-slate-200 border border-slate-200 dark:border-[#333]",
    ghost: "bg-transparent hover:bg-slate-100 dark:hover:bg-[#2a2a2a] text-slate-500 dark:text-slate-400 hover:text-slate-700 dark:hover:text-white"
  };
  
  return (
    <button className={`${baseClass} ${variants[variant]} ${className}`} {...props}>
      {children}
    </button>
  );
};

export default function MokiView() {
  const { mokis, fetchMokis, createMoki, updateMoki, deleteMoki } = useMoki();
  const [searchTerm, setSearchTerm] = useState('');
  const [isModalOpen, setIsModalOpen] = useState(false);
  const [editingItem, setEditingItem] = useState(null);
  
  const initialFormState = {
    aprovacao: '', autor: '', checklist: '', cod_unidade: '', data: '',
    idmoki_frota: '', nome_unidade: '', origem: '', status: 'Não Conforme',
    status_checklist: '', status_unidade: '', unidade: ''
  };
  const [formData, setFormData] = useState(initialFormState);

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

  const handleOpenModal = (item = null) => {
    if (item) {
        setEditingItem(item);
        setFormData({ 
          ...initialFormState, 
          ...item, 
          data: (item.data || item.data_moki || item.data_checklist || '').split('T')[0]
        });
    } else {
        setEditingItem(null);
        setFormData(initialFormState);
    }
    setIsModalOpen(true);
  };

  const handleSubmit = async (e) => {
    e.preventDefault();
    const { idmoki_frota, ...rest } = formData;
    const payload = {
      ...rest,
      id: idmoki_frota ? Number(idmoki_frota) : undefined
    };

    let success;
    if (editingItem) {
        success = await updateMoki(Number(idmoki_frota || editingItem.id), payload);
    } else {
        success = await createMoki(payload);
    }
    if (success) setIsModalOpen(false);
  };

  const filteredData = mokis.filter(item => 
    item.checklist?.toLowerCase().includes(searchTerm.toLowerCase()) ||
    item.unidade?.toLowerCase().includes(searchTerm.toLowerCase()) ||
    item.nome_unidade?.toLowerCase().includes(searchTerm.toLowerCase())
  );

  return (
    <div className="space-y-6 min-w-0 overflow-hidden">
      <div className="flex flex-col md:flex-row justify-between items-end md:items-center gap-4">
        <div>
          <h1 className="text-2xl font-black text-slate-800 dark:text-white tracking-tight">Checklists Moki</h1>
          <p className="text-slate-500 text-sm">Inspeções e vistorias realizadas.</p>
        </div>
        <div className="flex items-center gap-3 w-full md:w-auto">
          <div className="relative flex-1 md:flex-none">
            <Search className="absolute left-3 top-1/2 -translate-y-1/2 text-slate-500" size={16} />
            <input 
              className="w-full md:w-64 bg-white dark:bg-[#141414] border border-slate-200 dark:border-[#333] rounded-lg pl-10 pr-4 py-2 text-sm text-slate-700 dark:text-slate-200 focus:outline-none focus:border-emerald-500 focus:ring-1 focus:ring-emerald-500 transition-all placeholder:text-slate-400 dark:placeholder:text-slate-700"
              placeholder="Buscar checklist..." 
              value={searchTerm}
              onChange={e => setSearchTerm(e.target.value)}
            />
          </div>
          <DarkButton onClick={() => handleOpenModal()}>
            <Plus size={18} /> Novo Checklist
          </DarkButton>
        </div>
      </div>

      <div className="h-[600px] w-full max-w-full overflow-hidden min-w-0">
        <ExcelTable 
           data={filteredData}
            columns={[
              { header: 'ID', field: 'idmoki_frota', width: '80px' },
              { header: 'DATA', field: 'data', width: '100px', render: (row) => row.data?.split('T')[0] || row.data_checklist?.split('T')[0] },
              { header: 'CHECKLIST', field: 'checklist', width: '220px', className: 'font-bold text-emerald-600 dark:text-emerald-500' },
              { header: 'STATUS CHECKLIST', field: 'status_checklist', width: '150px' },
              { header: 'STATUS', field: 'status', width: '120px', render: (row) => (
                <span className={`inline-flex items-center px-2 py-0.5 rounded text-[9px] font-bold uppercase tracking-wider border ${
                    row.status === 'Não Conforme' ? 'bg-rose-500/10 text-rose-500 border-rose-500/20' :
                    row.status === 'Aprovado' || row.status === 'Conforme' ? 'bg-emerald-500/10 text-emerald-500 border-emerald-500/20' : 
                    'bg-amber-500/10 text-amber-500 border-amber-500/20'
                }`}>
                    {row.status || 'Pendente'}
                </span>
              )},
              { header: 'UNIDADE', field: 'unidade', width: '150px' },
              { header: 'COD. UNIDADE', field: 'cod_unidade', width: '120px' },
              { header: 'NOME UNIDADE', field: 'nome_unidade', width: '180px' },
              { header: 'STATUS UNIDADE', field: 'status_unidade', width: '120px' },
              { header: 'AUTOR', field: 'autor', width: '120px' },
              { header: 'ORIGEM', field: 'origem', width: '120px' },
              { header: 'APROVAÇÃO', field: 'aprovacao', width: '120px' },
            ]}
           filterDefs={[
               { field: 'origem', label: 'Origem', type: 'select' },
               { field: 'unidade', label: 'Unidade', type: 'select' },
               { field: 'checklist', label: 'Checklist', type: 'select' },
               { field: 'status', label: 'Status', type: 'select' },
               { field: 'autor', label: 'Autor', type: 'select' },
           ]}
           onEdit={handleOpenModal}
           onDelete={(item) => deleteMoki(item.idmoki_frota)}
        />
      </div>

      <Dialog open={isModalOpen} onOpenChange={setIsModalOpen}>
        <DialogContent className="max-w-4xl bg-white dark:bg-[#1c1c1c] border-slate-200 dark:border-[#2a2a2a] text-slate-700 dark:text-slate-200 p-0 overflow-hidden">
           <DialogHeader className="p-6 border-b border-slate-200 dark:border-[#2a2a2a]">
               <DialogTitle className="text-slate-800 dark:text-white uppercase font-black">
                   {editingItem ? `Editando Checklist ID: ${editingItem.idmoki_frota}` : 'Novo Checklist Moki'}
               </DialogTitle>
               <DialogDescription className="text-slate-500 dark:text-stone-500">
                   Informações da vistoria via sistema Moki.
               </DialogDescription>
           </DialogHeader>
           
           <form onSubmit={handleSubmit} className="px-6 py-4 space-y-4 max-h-[70vh] overflow-y-auto custom-scrollbar">
               <div className="bg-emerald-500/5 p-4 rounded-xl border border-emerald-500/10 mb-2">
                 <DarkInput 
                   type="number"
                   label="ID do Moki (Obrigatório)" 
                   value={formData.idmoki_frota} 
                   onChange={e => setFormData({...formData, idmoki_frota: e.target.value})}
                   required 
                   placeholder="Ex: 123456"
                 />
                 <p className="text-[10px] text-emerald-500/60 mt-1 ml-1 uppercase font-bold tracking-widest">Este campo deve ser preenchido manualmente para novos registros.</p>
               </div>

               <div className="grid grid-cols-2 gap-4">
                  <DarkInput label="Origem" value={formData.origem} onChange={e => setFormData({...formData, origem: e.target.value})} />
                  <DarkInput label="Unidade" value={formData.unidade} onChange={e => setFormData({...formData, unidade: e.target.value})} />
               </div>
               <div className="grid grid-cols-2 gap-4">
                  <DarkInput label="Cod. Unidade" value={formData.cod_unidade} onChange={e => setFormData({...formData, cod_unidade: e.target.value})} />
                  <DarkInput label="Nome Unidade" value={formData.nome_unidade} onChange={e => setFormData({...formData, nome_unidade: e.target.value})} />
               </div>
               <div className="grid grid-cols-2 gap-4">
                  <DarkInput label="Status Unidade" value={formData.status_unidade} onChange={e => setFormData({...formData, status_unidade: e.target.value})} />
                  <DarkInput label="Checklist" value={formData.checklist} onChange={e => setFormData({...formData, checklist: e.target.value})} />
               </div>
               <div className="grid grid-cols-2 gap-4">
                  <DarkInput label="Status Checklist" value={formData.status_checklist} onChange={e => setFormData({...formData, status_checklist: e.target.value})} />
                  <DarkInput type="date" label="Data" value={formData.data?.split('T')[0]} onChange={e => setFormData({...formData, data: e.target.value})} />
               </div>
               <div className="grid grid-cols-2 gap-4">
                  <DarkInput label="Autor" value={formData.autor} onChange={e => setFormData({...formData, autor: e.target.value})} />
                  <DarkSelect label="Status" options={['Pendente', 'Conforme', 'Não Conforme', 'Aprovado']} value={formData.status} onChange={v => setFormData({...formData, status: v})} />
               </div>
               <DarkInput label="Aprovação (Obs)" value={formData.aprovacao} onChange={e => setFormData({...formData, aprovacao: e.target.value})} />

               <DialogFooter className="sticky bottom-0 bg-white dark:bg-[#1c1c1c] border-t border-slate-200 dark:border-[#2a2a2a] p-4 gap-2">
                   <DarkButton type="button" variant="ghost" onClick={() => setIsModalOpen(false)}>Cancelar</DarkButton>
                   <DarkButton type="submit">Salvar Checklist</DarkButton>
               </DialogFooter>
           </form>
        </DialogContent>
      </Dialog>
    </div>
  );
}