/**
 * 生產工單管理主頁面
 */

import { useState, useEffect } from "react";
import { Plus, Factory, Search, Eye, Pencil, Trash2 } from 'lucide-react';
import { formatQuantity } from "@/lib/utils";
import { Button } from "@/Components/ui/button";
import AuthenticatedLayout from "@/Layouts/AuthenticatedLayout";
import { Head, router, Link } from "@inertiajs/react";
import Pagination from "@/Components/shared/Pagination";
import { getBreadcrumbs } from "@/utils/breadcrumb";
import { Can } from "@/Components/Permission/Can";
import { SearchableSelect } from "@/Components/ui/searchable-select";
import { Input } from "@/Components/ui/input";

import {
    Select,
    SelectContent,
    SelectItem,
    SelectTrigger,
    SelectValue,
} from "@/Components/ui/select";
import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/Components/ui/table";
import ProductionOrderStatusBadge from "@/Components/ProductionOrder/ProductionOrderStatusBadge";
import { formatDate } from "@/lib/date";

interface ProductionOrder {
    id: number;
    code: string;
    product: { id: number; name: string; code: string } | null;
    warehouse: { id: number; name: string } | null;
    user: { id: number; name: string } | null;
    output_batch_number: string;
    output_quantity: number;
    production_date: string;
    status: 'draft' | 'pending' | 'approved' | 'in_progress' | 'completed' | 'cancelled';
    created_at: string;
}

interface Props {
    productionOrders: {
        data: ProductionOrder[];
        links: any[];
        total: number;
        from: number;
        to: number;
    };
    filters: {
        search?: string;
        status?: string;
        per_page?: string;
    };
}

const statusOptions = [
    { value: 'all', label: '全部狀態' },
    { value: 'draft', label: '草稿' },
    { value: 'pending', label: '審核中' },
    { value: 'approved', label: '已核准' },
    { value: 'in_progress', label: '製作中' },
    { value: 'completed', label: '已完成' },
    { value: 'cancelled', label: '已取消' },
];

export default function ProductionIndex({ productionOrders, filters }: Props) {
    const [search, setSearch] = useState(filters.search || "");
    const [status, setStatus] = useState<string>(filters.status || "all");
    const [perPage, setPerPage] = useState<string>(filters.per_page || "10");

    useEffect(() => {
        setSearch(filters.search || "");
        setStatus(filters.status || "all");
        setPerPage(filters.per_page || "10");
    }, [filters]);

    const handleFilter = () => {
        router.get(
            route('production-orders.index'),
            {
                search,
                status: status === 'all' ? undefined : status,
                per_page: perPage,
            },
            { preserveState: true, replace: true, preserveScroll: true }
        );
    };


    const handlePerPageChange = (value: string) => {
        setPerPage(value);
        router.get(
            route("production-orders.index"),
            { ...filters, per_page: value },
            { preserveState: false, replace: true, preserveScroll: true }
        );
    };

    const handleNavigateToCreate = () => {
        router.get(route('production-orders.create'));
    };

    return (
        <AuthenticatedLayout breadcrumbs={getBreadcrumbs("productionOrders")}>
            <Head title="生產工單" />
            <div className="container mx-auto p-6 max-w-7xl">
                <div className="flex items-center justify-between mb-6">
                    <div>
                        <h1 className="text-2xl font-bold text-grey-0 flex items-center gap-2">
                            <Factory className="h-6 w-6 text-primary-main" />
                            生產工單
                        </h1>
                        <p className="text-gray-500 mt-1">
                            記錄生產過程，追蹤原物料使用與成品入庫
                        </p>
                    </div>

                </div>

                {/* Toolbar */}
                <div className="bg-white rounded-lg shadow-sm border p-4 mb-6">
                    <div className="flex flex-col md:flex-row gap-4">
                        {/* Search */}
                        <div className="flex-1 relative">
                            <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 h-4 w-4" />
                            <Input
                                placeholder="搜尋生產單號、批號、商品名稱..."
                                value={search}
                                onChange={(e) => setSearch(e.target.value)}
                                className="pl-10 pr-10 h-9"
                                onKeyDown={(e) => e.key === 'Enter' && handleFilter()}
                            />
                            {search && (
                                <button
                                    onClick={() => {
                                        setSearch("");
                                        router.get(route('production-orders.index'), { ...filters, search: "" }, { preserveState: true, replace: true, preserveScroll: true });
                                    }}
                                    className="absolute right-3 top-1/2 transform -translate-y-1/2 text-gray-400 hover:text-gray-600"
                                >
                                    <Trash2 className="h-4 w-4" />
                                </button>
                            )}
                        </div>

                        {/* Status Filter */}
                        <Select
                            value={status}
                            onValueChange={(val) => {
                                setStatus(val);
                                router.get(
                                    route('production-orders.index'),
                                    { ...filters, status: val === 'all' ? undefined : val },
                                    { preserveState: true, replace: true, preserveScroll: true }
                                );
                            }}
                        >
                            <SelectTrigger className="w-full md:w-[150px] h-9 text-sm">
                                <SelectValue placeholder="選擇狀態" />
                            </SelectTrigger>
                            <SelectContent>
                                {statusOptions.map(opt => (
                                    <SelectItem key={opt.value} value={opt.value}>
                                        {opt.label}
                                    </SelectItem>
                                ))}
                            </SelectContent>
                        </Select>

                        {/* Action Buttons */}
                        <div className="flex gap-2 w-full md:w-auto">
                            <Button
                                variant="outline"
                                className="button-outlined-primary"
                                onClick={handleFilter}
                            >
                                <Search className="w-4 h-4 mr-2" />
                                搜尋
                            </Button>

                            <Can permission="production_orders.create">
                                <Button
                                    onClick={handleNavigateToCreate}
                                    className="gap-2 button-filled-primary"
                                >
                                    <Plus className="h-4 w-4" />
                                    建立生產單
                                </Button>
                            </Can>
                        </div>
                    </div>
                </div>

                {/* 生產單列表 */}
                <div className="bg-white rounded-xl border border-gray-200 shadow-sm overflow-hidden">
                    <Table>
                        <TableHeader className="bg-gray-50">
                            <TableRow>
                                <TableHead className="w-[150px]">生產單號</TableHead>
                                <TableHead>成品</TableHead>
                                <TableHead>成品批號</TableHead>
                                <TableHead className="text-right">數量</TableHead>
                                <TableHead>入庫倉庫</TableHead>
                                <TableHead>生產日期</TableHead>
                                <TableHead className="text-center w-[100px]">狀態</TableHead>
                                <TableHead className="text-center w-[100px]">操作</TableHead>
                            </TableRow>
                        </TableHeader>
                        <TableBody>
                            {productionOrders.data.length === 0 ? (
                                <TableRow>
                                    <TableCell colSpan={8} className="h-32 text-center text-gray-500">
                                        <div className="flex flex-col items-center justify-center gap-2">
                                            <Factory className="h-10 w-10 text-gray-300" />
                                            <p>尚無生產工單</p>
                                        </div>
                                    </TableCell>
                                </TableRow>
                            ) : (
                                productionOrders.data.map((order) => (
                                    <TableRow key={order.id}>
                                        <TableCell className="font-medium text-gray-900">
                                            {order.code}
                                        </TableCell>
                                        <TableCell>
                                            <div className="flex flex-col">
                                                <span className="font-medium text-gray-900">{order.product?.name || '-'}</span>
                                                <span className="text-gray-400 text-xs">
                                                    {order.product?.code || '-'}
                                                </span>
                                            </div>
                                        </TableCell>
                                        <TableCell>
                                            <code className="bg-gray-100 px-1.5 py-0.5 rounded text-xs font-mono">
                                                {order.output_batch_number}
                                            </code>
                                        </TableCell>
                                        <TableCell className="text-right font-medium">
                                            {formatQuantity(order.output_quantity)}
                                        </TableCell>
                                        <TableCell className="text-gray-600">
                                            {order.warehouse?.name || '-'}
                                        </TableCell>
                                        <TableCell className="text-gray-600">
                                            {formatDate(order.production_date)}
                                        </TableCell>
                                        <TableCell className="text-center">
                                            <ProductionOrderStatusBadge status={order.status} />
                                        </TableCell>
                                        <TableCell className="text-center">
                                            <div className="flex items-center justify-center gap-2">
                                                {order.status === 'draft' && (
                                                    <Can permission="production_orders.edit">
                                                        <Link href={route('production-orders.edit', order.id)}>
                                                            <Button
                                                                variant="outline"
                                                                size="sm"
                                                                className="button-outlined-primary"
                                                                title="編輯"
                                                            >
                                                                <Pencil className="h-4 w-4" />
                                                            </Button>
                                                        </Link>
                                                    </Can>
                                                )}
                                                <Can permission="production_orders.view">
                                                    <Link href={route('production-orders.show', order.id)}>
                                                        <Button
                                                            variant="outline"
                                                            size="sm"
                                                            className="button-outlined-primary"
                                                            title="檢視"
                                                        >
                                                            <Eye className="h-4 w-4" />
                                                        </Button>
                                                    </Link>
                                                </Can>
                                                <Can permission="production_orders.delete">
                                                    {(order.status === 'draft' || order.status === 'cancelled') && (
                                                        <Button
                                                            variant="outline"
                                                            size="sm"
                                                            className="button-outlined-error"
                                                            title="刪除"
                                                            onClick={() => {
                                                                if (confirm('確定要刪除此生產工單嗎？')) {
                                                                    router.delete(route('production-orders.destroy', order.id));
                                                                }
                                                            }}
                                                        >
                                                            <Trash2 className="h-4 w-4" />
                                                        </Button>
                                                    )}
                                                </Can>
                                            </div>
                                        </TableCell>
                                    </TableRow>
                                ))
                            )}
                        </TableBody>
                    </Table>
                </div>

                {/* 分頁 */}
                <div className="mt-4 flex flex-col sm:flex-row items-start sm: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>
                    <div className="w-full sm:w-auto flex justify-center sm:justify-end">
                        <Pagination links={productionOrders.links} />
                    </div>
                </div>
            </div>
        </AuthenticatedLayout >
    );
}
