import React, { useState } from 'react';
import { Card } from '../ui/card';
import { Button } from '../ui/button';
import { Badge } from '../ui/badge';
import { SearchInput } from '../ui/input';
import {
  Plus,
  Wrench,
  FileText,
  DollarSign,
  Shield,
  Tag,
  Download,
  Activity,
  AlertTriangle,
  ShoppingBag,
  X,
  FileCheck,
  ClipboardList,
} from 'lucide-react';
import { GearItem } from '../../types';
import { useToast } from '../../context/ToastContext';

// --- MOCK DATA ---

const INVENTORY: GearItem[] = [
  {
    id: '1',
    name: 'Prophet-6',
    category: 'Synth',
    brand: 'Sequential',
    model: 'Prophet-6 Desktop',
    serialNumber: 'SQ-P6-99281',
    purchaseDate: '2023-01-15',
    purchasePrice: 2499,
    currency: 'USD',
    status: 'Active',
    condition: 'Mint',
    vendor: 'Sweetwater',
    orderNumber: 'SW-8821002',
    warrantyExpire: '2025-01-15',
    warrantyType: 'Manufacturer',
    supportContact: 'support@sequential.com',
    image: 'https://picsum.photos/id/100/400/400',
    specs: {
      Polyphony: '6 Voices',
      Oscillators: '2 Discrete VCOs',
      Filter: 'Low-pass + High-pass',
      Sequencer: '64-step',
    },
    documents: [
      { name: 'User Manual', type: 'manual', url: '#', size: '4.2 MB' },
      { name: 'Purchase Receipt', type: 'receipt', url: '#', size: '150 KB' },
    ],
  },
  {
    id: '2',
    name: 'Apollo Twin X',
    category: 'Interface',
    brand: 'Universal Audio',
    model: 'Twin X Duo',
    serialNumber: 'UA-TWX-2210',
    purchaseDate: '2022-11-20',
    purchasePrice: 999,
    currency: 'USD',
    status: 'Active',
    condition: 'Good',
    vendor: 'Thomann',
    warrantyExpire: '2023-11-20',
    warrantyType: 'Manufacturer',
    image: 'https://picsum.photos/id/101/400/400',
    specs: {
      Inputs: '2 Mic/Line',
      Outputs: '4 Line',
      Connection: 'Thunderbolt 3',
      DSP: 'Duo Core',
    },
    documents: [
      { name: 'Firmware v1.2', type: 'firmware', url: '#', size: '120 MB' },
    ],
    maintenanceHistory: [
      {
        id: 'm1',
        date: '2023-05-10',
        type: 'Cleaning',
        notes: 'Potentiometer de-oxidizing',
        cost: 0,
      },
    ],
  },
  {
    id: '3',
    name: 'SM7B',
    category: 'Microphone',
    brand: 'Shure',
    model: 'SM7B Dynamic',
    serialNumber: 'SH-SM7-004',
    purchaseDate: '2021-05-10',
    purchasePrice: 399,
    currency: 'USD',
    status: 'Maintenance',
    condition: 'Fair',
    vendor: 'Guitar Center',
    warrantyExpire: '2023-05-10',
    warrantyType: 'None',
    image: 'https://picsum.photos/id/102/400/400',
    notes: 'XLR connector feels loose. Sent for repair.',
    maintenanceHistory: [
      {
        id: 'm2',
        date: '2024-02-15',
        type: 'Repair',
        notes: 'XLR Jack Replacement',
        cost: 45,
        provider: 'Local Shop',
      },
    ],
  },
];

export const GearView: React.FC = () => {
  const { addToast } = useToast();
  const [selectedItem, setSelectedItem] = useState<GearItem | null>(null);
  const [filter, setFilter] = useState('All');
  const [search, setSearch] = useState('');

  // Filtering Logic
  const filteredInventory = INVENTORY.filter((item) => {
    const matchesFilter =
      filter === 'All' || item.category === filter || item.status === filter;
    const matchesSearch =
      item.name.toLowerCase().includes(search.toLowerCase()) ||
      item.brand.toLowerCase().includes(search.toLowerCase());
    return matchesFilter && matchesSearch;
  });

  const getWarrantyStatus = (dateStr?: string) => {
    if (!dateStr)
      return { label: 'Unknown', color: 'text-kodo-content-dim', bg: 'bg-kodo-steel/10' };
    const expiry = new Date(dateStr);
    const now = new Date();
    const daysLeft = Math.ceil(
      (expiry.getTime() - now.getTime()) / (1000 * 60 * 60 * 24),
    );

    if (daysLeft < 0)
      return { label: 'Expired', color: 'text-kodo-red', bg: 'bg-kodo-red/10' };
    if (daysLeft < 90)
      return {
        label: `Expiring (${daysLeft}d)`,
        color: 'text-kodo-gold',
        bg: 'bg-kodo-gold/10',
      };
    return { label: 'Active', color: 'text-kodo-lime', bg: 'bg-kodo-lime/10' };
  };

  const handleListOnMarketplace = (item: GearItem) => {
    addToast(`Draft listing created for ${item.brand} ${item.name}`, 'success');
    setSelectedItem(null);
  };

  return (
    <div className="space-y-6 animate-fadeIn relative">
      {/* Header */}
      <div className="flex flex-col md:flex-row justify-between items-start md:items-center gap-4">
        <div>
          <h2 className="text-3xl font-display font-bold text-white mb-2">
            GEAR LOCKER
          </h2>
          <p className="text-kodo-content-dim font-mono text-sm">
            Manage hardware assets, documentation, and warranties.
          </p>
        </div>
        <div className="flex gap-3">
          <Button
            variant="ghost"
            icon={<Download className="w-4 h-4" />}
            onClick={() => addToast('Exporting Inventory CSV...')}
          >
            EXPORT CSV
          </Button>
          <Button variant="gaming" icon={<Plus className="w-4 h-4" />}>
            REGISTER GEAR
          </Button>
        </div>
      </div>

      {/* Filters */}
      <div className="flex flex-col md:flex-row gap-4 items-center bg-kodo-ink/50 p-4 rounded-xl border border-kodo-steel/50">
        <div className="w-full md:w-64">
          <SearchInput
            placeholder="Search brand, model, serial..."
            value={search}
            onChange={(e) => setSearch(e.target.value)}
          />
        </div>
        <div className="flex gap-2 overflow-x-auto w-full md:w-auto pb-2 md:pb-0">
          {[
            'All',
            'Synth',
            'Interface',
            'Microphone',
            'Active',
            'Maintenance',
            'Sold',
          ].map((f) => (
            <button
              key={f}
              onClick={() => setFilter(f)}
              className={`px-3 py-1.5 rounded-lg text-xs font-bold uppercase tracking-wider transition-colors border ${filter === f ? 'bg-kodo-cyan text-black border-kodo-cyan' : 'bg-kodo-slate text-kodo-content-dim border-transparent hover:border-kodo-steel'}`}
            >
              {f}
            </button>
          ))}
        </div>
      </div>

      {/* Grid */}
      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
        {filteredInventory.map((item) => {
          const warranty = getWarrantyStatus(item.warrantyExpire);

          return (
            <Card
              key={item.id}
              variant="gaming"
              className="group cursor-pointer hover:border-kodo-cyan/50 transition-all hover:-translate-y-1"
              onClick={() => setSelectedItem(item)}
            >
              <div className="flex items-start justify-between mb-4">
                <Badge label={item.category} variant="terminal" />
                <div
                  className={`px-2 py-0.5 rounded text-[10px] font-bold uppercase ${item.status === 'Active' ? 'bg-kodo-lime/10 text-kodo-lime' : 'bg-kodo-orange/10 text-kodo-orange'}`}
                >
                  {item.status}
                </div>
              </div>

              <div className="flex gap-4 mb-4">
                <div className="w-24 h-24 bg-kodo-graphite rounded-lg border border-kodo-steel overflow-hidden flex-shrink-0">
                  <img
                    src={item.image}
                    className="w-full h-full object-cover opacity-80 group-hover:opacity-100 transition-opacity"
                  />
                </div>
                <div className="flex-1 min-w-0">
                  <h3 className="text-lg font-bold text-white truncate">
                    {item.name}
                  </h3>
                  <p className="text-kodo-gold text-sm font-mono mb-1">
                    {item.brand}
                  </p>
                  <p className="text-xs text-kodo-content-dim truncate">
                    S/N: {item.serialNumber}
                  </p>
                  <div className="mt-2 flex items-center gap-2">
                    <span
                      className={`w-2 h-2 rounded-full ${warranty.color.replace('text', 'bg')}`}
                    ></span>
                    <span className={`text-[10px] font-bold ${warranty.color}`}>
                      {warranty.label} Warranty
                    </span>
                  </div>
                </div>
              </div>

              <div className="grid grid-cols-2 gap-2 mt-4 pt-4 border-t border-kodo-steel">
                <div className="text-center p-2 bg-white/5 rounded">
                  <div className="text-[10px] text-kodo-content-dim uppercase">
                    Purchased
                  </div>
                  <div className="text-sm font-bold text-white">
                    {item.purchaseDate}
                  </div>
                </div>
                <div className="text-center p-2 bg-white/5 rounded">
                  <div className="text-[10px] text-kodo-content-dim uppercase">
                    Condition
                  </div>
                  <div className="text-sm font-bold text-white">
                    {item.condition}
                  </div>
                </div>
              </div>
            </Card>
          );
        })}

        {/* Add New Placeholder */}
        <div
          className="border-2 border-dashed border-kodo-steel rounded-xl flex flex-col items-center justify-center p-8 hover:bg-kodo-slate/20 transition-colors cursor-pointer text-kodo-content-dim hover:text-kodo-cyan hover:border-kodo-cyan min-h-[280px]"
          onClick={() => addToast('Opens Registration Form')}
        >
          <Plus className="w-12 h-12 mb-4 opacity-50" />
          <span className="font-mono font-bold">REGISTER NEW HARDWARE</span>
        </div>
      </div>

      {/* --- GEAR DETAIL MODAL --- */}
      {selectedItem && (
        <div className="fixed inset-0 z-50 flex items-center justify-center p-4">
          <div
            className="absolute inset-0 bg-kodo-void/90 backdrop-blur-sm"
            onClick={() => setSelectedItem(null)}
          ></div>
          <div className="relative w-full max-w-5xl bg-kodo-graphite border border-kodo-steel rounded-2xl shadow-2xl animate-scaleIn overflow-hidden flex flex-col max-h-[90vh]">
            {/* Modal Header */}
            <div className="p-6 border-b border-kodo-steel bg-kodo-ink flex justify-between items-start">
              <div className="flex gap-6">
                <div className="w-32 h-32 bg-kodo-graphite rounded-lg overflow-hidden border border-kodo-steel shadow-lg">
                  <img
                    src={selectedItem.image}
                    className="w-full h-full object-cover"
                  />
                </div>
                <div>
                  <div className="flex items-center gap-3 mb-1">
                    <Badge label={selectedItem.category} variant="cyan" />
                    <span className="text-kodo-content-dim text-xs font-mono uppercase">
                      {selectedItem.serialNumber}
                    </span>
                  </div>
                  <h2 className="text-3xl font-display font-bold text-white">
                    {selectedItem.name}
                  </h2>
                  <h3 className="text-xl text-kodo-gold font-medium mb-4">
                    {selectedItem.brand} {selectedItem.model}
                  </h3>

                  <div className="flex gap-3">
                    <Button
                      variant="gaming"
                      size="sm"
                      icon={<ShoppingBag className="w-4 h-4" />}
                      onClick={() => handleListOnMarketplace(selectedItem)}
                    >
                      SELL ON MARKETPLACE
                    </Button>
                    <Button
                      variant="secondary"
                      size="sm"
                      icon={<Activity className="w-4 h-4" />}
                      onClick={() => addToast('Maintenance Log Updated')}
                    >
                      LOG MAINTENANCE
                    </Button>
                  </div>
                </div>
              </div>
              <button
                onClick={() => setSelectedItem(null)}
                className="text-kodo-content-dim hover:text-white"
              >
                <X className="w-6 h-6" />
              </button>
            </div>

            {/* Modal Body */}
            <div className="flex-1 overflow-y-auto p-6">
              <div className="grid grid-cols-1 lg:grid-cols-3 gap-8">
                {/* Left: Specs & Info */}
                <div className="lg:col-span-2 space-y-6">
                  {/* Specifications */}
                  <Card variant="default">
                    <h4 className="flex items-center gap-2 font-bold text-white mb-4 border-b border-kodo-steel pb-2">
                      <Tag className="w-4 h-4 text-kodo-cyan" /> Specifications
                    </h4>
                    <div className="grid grid-cols-2 gap-y-4 gap-x-8">
                      {selectedItem.specs ? (
                        Object.entries(selectedItem.specs).map(([key, val]) => (
                          <div
                            key={key}
                            className="flex justify-between border-b border-kodo-steel pb-1"
                          >
                            <span className="text-kodo-content-dim text-sm">{key}</span>
                            <span className="text-white text-sm font-medium">
                              {val}
                            </span>
                          </div>
                        ))
                      ) : (
                        <p className="text-kodo-content-dim italic">
                          No specs available.
                        </p>
                      )}
                    </div>
                  </Card>

                  {/* Maintenance Log */}
                  <Card variant="default">
                    <h4 className="flex items-center gap-2 font-bold text-white mb-4 border-b border-kodo-steel pb-2">
                      <Wrench className="w-4 h-4 text-kodo-orange" />{' '}
                      Maintenance & Support (SAV)
                    </h4>
                    {selectedItem.status === 'Maintenance' && (
                      <div className="bg-kodo-orange/10 border border-kodo-orange/30 p-3 rounded mb-4 flex items-center gap-3">
                        <AlertTriangle className="w-5 h-5 text-kodo-orange" />
                        <div>
                          <div className="text-sm font-bold text-kodo-orange">
                            Currently in Repair
                          </div>
                          <div className="text-xs text-kodo-content-dim">
                            {selectedItem.notes}
                          </div>
                        </div>
                      </div>
                    )}

                    <div className="space-y-3">
                      {selectedItem.maintenanceHistory?.map((log) => (
                        <div
                          key={log.id}
                          className="flex items-start gap-4 p-3 bg-white/5 rounded hover:bg-white/10 transition-colors"
                        >
                          <div className="bg-kodo-graphite p-2 rounded text-kodo-content-dim">
                            <ClipboardList className="w-4 h-4" />
                          </div>
                          <div className="flex-1">
                            <div className="flex justify-between">
                              <span className="font-bold text-white text-sm">
                                {log.type}
                              </span>
                              <span className="text-xs text-kodo-content-dim">
                                {log.date}
                              </span>
                            </div>
                            <p className="text-xs text-kodo-content-dim mt-1">
                              {log.notes}
                            </p>
                            {log.cost && (
                              <div className="text-xs text-kodo-red mt-1 font-mono">
                                Cost: ${log.cost}
                              </div>
                            )}
                          </div>
                        </div>
                      ))}
                      {(!selectedItem.maintenanceHistory ||
                        selectedItem.maintenanceHistory.length === 0) && (
                        <p className="text-sm text-kodo-content-dim italic">
                          No maintenance history recorded.
                        </p>
                      )}
                    </div>
                  </Card>
                </div>

                {/* Right: Purchase & Docs */}
                <div className="space-y-6">
                  {/* Purchase Info */}
                  <Card variant="glass">
                    <h4 className="flex items-center gap-2 font-bold text-white mb-4 border-b border-kodo-steel pb-2">
                      <DollarSign className="w-4 h-4 text-kodo-gold" /> Purchase
                      Info
                    </h4>
                    <div className="space-y-3 text-sm">
                      <div className="flex justify-between">
                        <span className="text-kodo-content-dim">Price Paid</span>
                        <span className="text-white font-mono">
                          {selectedItem.currency} {selectedItem.purchasePrice}
                        </span>
                      </div>
                      <div className="flex justify-between">
                        <span className="text-kodo-content-dim">Date</span>
                        <span className="text-white">
                          {selectedItem.purchaseDate}
                        </span>
                      </div>
                      <div className="flex justify-between">
                        <span className="text-kodo-content-dim">Vendor</span>
                        <span className="text-white">
                          {selectedItem.vendor}
                        </span>
                      </div>
                      {selectedItem.orderNumber && (
                        <div className="flex justify-between">
                          <span className="text-kodo-content-dim">Order #</span>
                          <span className="text-kodo-cyan">
                            {selectedItem.orderNumber}
                          </span>
                        </div>
                      )}
                    </div>
                  </Card>

                  {/* Warranty */}
                  <Card variant="default">
                    <h4 className="flex items-center gap-2 font-bold text-white mb-4 border-b border-kodo-steel pb-2">
                      <Shield className="w-4 h-4 text-kodo-lime" /> Warranty
                    </h4>
                    <div
                      className={`p-3 rounded text-center mb-4 ${getWarrantyStatus(selectedItem.warrantyExpire).bg}`}
                    >
                      <div
                        className={`text-lg font-bold ${getWarrantyStatus(selectedItem.warrantyExpire).color}`}
                      >
                        {getWarrantyStatus(selectedItem.warrantyExpire).label}
                      </div>
                      <div className="text-xs text-kodo-content-dim">
                        Expires: {selectedItem.warrantyExpire || 'N/A'}
                      </div>
                    </div>
                    {selectedItem.supportContact && (
                      <Button
                        variant="ghost"
                        size="sm"
                        className="w-full text-xs"
                        onClick={() =>
                          addToast(`Contacting ${selectedItem.supportContact}`)
                        }
                      >
                        Contact Support
                      </Button>
                    )}
                  </Card>

                  {/* Documents */}
                  <Card variant="default">
                    <h4 className="flex items-center gap-2 font-bold text-white mb-4 border-b border-kodo-steel pb-2">
                      <FileText className="w-4 h-4 text-kodo-content-dim" />{' '}
                      Documentation
                    </h4>
                    <div className="space-y-2">
                      {selectedItem.documents?.map((doc, i) => (
                        <div
                          key={i}
                          className="flex items-center justify-between p-2 hover:bg-white/5 rounded cursor-pointer group"
                        >
                          <div className="flex items-center gap-3 overflow-hidden">
                            {doc.type === 'manual' ? (
                              <FileText className="w-4 h-4 text-kodo-cyan" />
                            ) : (
                              <FileCheck className="w-4 h-4 text-kodo-gold" />
                            )}
                            <span className="text-sm text-kodo-text-main truncate">
                              {doc.name}
                            </span>
                          </div>
                          <Download className="w-4 h-4 text-kodo-content-dim group-hover:text-white" />
                        </div>
                      ))}
                      <Button
                        variant="ghost"
                        size="sm"
                        className="w-full mt-2 text-xs border border-dashed border-kodo-steel"
                      >
                        <Plus className="w-3 h-3 mr-1" /> Upload Document
                      </Button>
                    </div>
                  </Card>
                </div>
              </div>
            </div>
          </div>
        </div>
      )}
    </div>
  );
};