import AuthenticatedLayout from '@/Layouts/AuthenticatedLayout';
import { Head, Link, router } from '@inertiajs/react';
import { Button } from '@/Components/ui/button';
import { Plus, Search, FileText, RotateCcw, Calendar } from 'lucide-react';
import { Input } from '@/Components/ui/input';
import { Label } from '@/Components/ui/label';
import { SearchableSelect } from '@/Components/ui/searchable-select';
import Pagination from '@/Components/shared/Pagination';
import { useState, useEffect } from 'react';
import { Can } from '@/Components/Permission/Can';
import { getDateRange } from '@/utils/format';
import {
    Select,
    SelectContent,
    SelectItem,
    SelectTrigger,
    SelectValue,
} from '@/Components/ui/select';
import GoodsReceiptTable from '@/Components/Inventory/GoodsReceiptTable';

interface Warehouse {
    id: number;
    name: string;
    type: string;
}

interface Filters {
    search?: string;
    status?: string;
    warehouse_id?: string;
    date_start?: string;
    date_end?: string;
    per_page?: string;
}

interface Props {
    receipts: any;
    filters: Filters;
    warehouses: Warehouse[];
}

export default function GoodsReceiptIndex({ receipts, filters, warehouses }: Props) {
    const [search, setSearch] = useState(filters.search || '');
    const [status, setStatus] = useState(filters.status || 'all');
    const [warehouseId, setWarehouseId] = useState(filters.warehouse_id || 'all');
    const [dateStart, setDateStart] = useState(filters.date_start || '');
    const [dateEnd, setDateEnd] = useState(filters.date_end || '');
    const [perPage, setPerPage] = useState(filters.per_page || '10');
    const [dateRangeType, setDateRangeType] = useState('custom');

    // Advanced Filter Toggle


    // Sync filters from props
    useEffect(() => {
        setSearch(filters.search || '');
        setStatus(filters.status || 'all');
        setWarehouseId(filters.warehouse_id || 'all');
        setDateStart(filters.date_start || '');
        setDateEnd(filters.date_end || '');
        setPerPage(filters.per_page || '10');
    }, [filters]);

    const handleFilter = () => {
        router.get(route('goods-receipts.index'), {
            search,
            status: status !== 'all' ? status : undefined,
            warehouse_id: warehouseId !== 'all' ? warehouseId : undefined,
            date_start: dateStart || undefined,
            date_end: dateEnd || undefined,
            per_page: perPage,
        }, { preserveState: true, replace: true });
    };

    const handleReset = () => {
        setSearch('');
        setStatus('all');
        setWarehouseId('all');
        setDateStart('');
        setDateEnd('');
        setDateRangeType('custom');
        setPerPage('10');
        router.get(route('goods-receipts.index'), {}, { preserveState: false });
    };

    const handleDateRangeChange = (type: string) => {
        setDateRangeType(type);
        if (type === 'custom') return;

        const { start, end } = getDateRange(type);
        setDateStart(start);
        setDateEnd(end);
    };

    const handlePerPageChange = (value: string) => {
        setPerPage(value);
        router.get(route('goods-receipts.index'), {
            search,
            status: status !== 'all' ? status : undefined,
            warehouse_id: warehouseId !== 'all' ? warehouseId : undefined,
            date_start: dateStart || undefined,
            date_end: dateEnd || undefined,
            per_page: value,
        }, { preserveState: true, preserveScroll: true, replace: true });
    };

    const statusOptions = [
        { label: '全部狀態', value: 'all' },
        { label: '已完成', value: 'completed' },
        { label: '處理中', value: 'processing' },
    ];

    const warehouseOptions = [
        { label: '全部倉庫', value: 'all' },
        ...warehouses.map(w => ({ label: w.name, value: w.id.toString() }))
    ];

    return (
        <AuthenticatedLayout
            breadcrumbs={[
                { label: '供應鏈管理', href: '#' },
                { label: '進貨單管理', href: route('goods-receipts.index'), isPage: true },
            ]}
        >
            <Head title="進貨單管理" />

            <div className="container mx-auto p-6 max-w-7xl">
                {/* Header Section */}
                <div className="flex items-center justify-between mb-6">
                    <div>
                        <h1 className="text-2xl font-bold text-gray-900 flex items-center gap-2">
                            <FileText className="h-6 w-6 text-primary-main" />
                            進貨單管理
                        </h1>
                        <p className="text-gray-500 mt-1">
                            管理所有的進貨單據，包含新增、查詢與查看詳細內容。
                        </p>
                    </div>
                    <Can permission="goods_receipts.create">
                        <Link href={route('goods-receipts.create')}>
                            <Button className="button-filled-primary">
                                <Plus className="mr-2 h-4 w-4" />
                                新增進貨單
                            </Button>
                        </Link>
                    </Can>
                </div>

                {/* Filter Bar */}
                <div className="bg-white rounded-xl shadow-sm border border-grey-4 p-5 mb-6">
                    <div className="space-y-4">
                        {/* Row 1: Date Range & Quick Buttons */}
                        <div className="flex flex-col lg:flex-row gap-4 lg:items-end">
                            <div className="flex-none space-y-2">
                                <Label className="text-xs font-medium text-grey-2">快速時間區間</Label>
                                <div className="flex flex-wrap gap-2">
                                    {[
                                        { label: "今日", value: "today" },
                                        { label: "昨日", value: "yesterday" },
                                        { label: "本週", value: "this_week" },
                                        { label: "本月", value: "this_month" },
                                        { label: "上月", value: "last_month" },
                                    ].map((opt) => (
                                        <Button
                                            key={opt.value}
                                            size="sm"
                                            onClick={() => handleDateRangeChange(opt.value)}
                                            className={
                                                dateRangeType === opt.value
                                                    ? 'button-filled-primary h-9 px-4 shadow-sm'
                                                    : 'button-outlined-primary h-9 px-4 bg-white'
                                            }
                                        >
                                            {opt.label}
                                        </Button>
                                    ))}
                                </div>
                            </div>

                            {/* Date Inputs */}
                            <div className="w-full lg:flex-1">
                                <div className="grid grid-cols-2 gap-2">
                                    <div className="space-y-1">
                                        <Label className="text-xs text-grey-2 font-medium">開始日期</Label>
                                        <div className="relative">
                                            <Calendar className="absolute left-2.5 top-1/2 transform -translate-y-1/2 h-4 w-4 text-gray-400 pointer-events-none" />
                                            <Input
                                                type="date"
                                                value={dateStart}
                                                onChange={(e) => {
                                                    setDateStart(e.target.value);
                                                    setDateRangeType('custom');
                                                }}
                                                className="pl-9 block w-full h-9 bg-white"
                                            />
                                        </div>
                                    </div>
                                    <div className="space-y-1">
                                        <Label className="text-xs text-grey-2 font-medium">結束日期</Label>
                                        <div className="relative">
                                            <Calendar className="absolute left-2.5 top-1/2 transform -translate-y-1/2 h-4 w-4 text-gray-400 pointer-events-none" />
                                            <Input
                                                type="date"
                                                value={dateEnd}
                                                onChange={(e) => {
                                                    setDateEnd(e.target.value);
                                                    setDateRangeType('custom');
                                                }}
                                                className="pl-9 block w-full h-9 bg-white text-left"
                                            />
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        {/* Row 2: Filters & Actions */}
                        <div className="grid grid-cols-1 md:grid-cols-12 gap-4 items-end">
                            {/* Search */}
                            <div className="md:col-span-4 space-y-1">
                                <Label className="text-xs font-medium text-grey-1">關鍵字搜尋</Label>
                                <div className="relative">
                                    <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 h-4 w-4" />
                                    <Input
                                        placeholder="搜尋單號..."
                                        value={search}
                                        onChange={(e) => setSearch(e.target.value)}
                                        className="pl-10 h-9 block"
                                        onKeyDown={(e) => e.key === 'Enter' && handleFilter()}
                                    />
                                </div>
                            </div>

                            {/* Status */}
                            <div className="md:col-span-2 space-y-1">
                                <Label className="text-xs font-medium text-grey-1">狀態</Label>
                                <Select value={status} onValueChange={setStatus}>
                                    <SelectTrigger className="h-9">
                                        <SelectValue placeholder="選擇狀態" />
                                    </SelectTrigger>
                                    <SelectContent>
                                        {statusOptions.map(opt => (
                                            <SelectItem key={opt.value} value={opt.value}>{opt.label}</SelectItem>
                                        ))}
                                    </SelectContent>
                                </Select>
                            </div>

                            {/* Warehouse */}
                            <div className="md:col-span-3 space-y-1">
                                <Label className="text-xs font-medium text-grey-1">倉庫</Label>
                                <SearchableSelect
                                    value={warehouseId}
                                    onValueChange={setWarehouseId}
                                    options={warehouseOptions}
                                    placeholder="選擇倉庫"
                                    className="w-full h-9"
                                    showSearch={warehouses.length > 10}
                                />
                            </div>

                            {/* Actions */}
                            <div className="md:col-span-3 flex items-center justify-end gap-2">
                                <Button
                                    variant="outline"
                                    onClick={handleReset}
                                    className="flex-1 flex items-center justify-center gap-2 button-outlined-primary h-9"
                                >
                                    <RotateCcw className="h-4 w-4" />
                                    重置
                                </Button>
                                <Button
                                    onClick={handleFilter}
                                    className="flex-1 flex items-center justify-center gap-2 button-filled-primary h-9"
                                >
                                    <Search className="h-4 w-4" />
                                    查詢
                                </Button>
                            </div>
                        </div>
                    </div>
                </div>

                {/* Table Section */}
                <GoodsReceiptTable receipts={receipts.data} />

                {/* Pagination */}
                <div className="mt-4 flex flex-col sm:flex-row items-center justify-between gap-4">
                    <div className="flex items-center gap-2 text-sm text-gray-500">
                        <span>每頁顯示</span>
                        <SearchableSelect
                            value={perPage}
                            onValueChange={handlePerPageChange}
                            options={[
                                { label: "10", value: "10" },
                                { label: "20", value: "20" },
                                { label: "50", value: "50" },
                                { label: "100", value: "100" }
                            ]}
                            className="w-[100px] h-8"
                            showSearch={false}
                        />
                        <span>筆</span>
                    </div>
                    <Pagination links={receipts.links} />
                </div>
            </div>
        </AuthenticatedLayout>
    );
}