import { Head, Link, router } from '@inertiajs/react';
import {
    createColumnHelper,
    type ColumnDef,
    type PaginationState,
    type SortingState,
} from '@tanstack/react-table';
import { Pencil, Plus, Trash2 } from 'lucide-react';
import { useEffect, useMemo, useRef, useState } from 'react';
import ProjectController from '@/actions/App/Http/Controllers/Admin/ProjectController';
import { ConfirmDialog } from '@/components/confirm-dialog';
import {
    DataTable,
    DataTableBulkDelete,
    DataTableColumnHeader,
    withSelectionColumn,
} from '@/components/data-table';
import Heading from '@/components/heading';
import { Badge } from '@/components/ui/badge';
import { Button } from '@/components/ui/button';
import {
    Select,
    SelectContent,
    SelectItem,
    SelectTrigger,
    SelectValue,
} from '@/components/ui/select';
import { useCan, useHasRole } from '@/hooks/use-can';
import { cn, formatCurrency, formatDate } from '@/lib/utils';
import { create, edit, index, show } from '@/routes/admin/projects';
import { dashboard } from '@/routes';
import type { Paginated, TableFilters } from '@/types';

type CustomerOption = { id: number; code: string; name: string };
type StatusOption = { value: string; label: string };

type ProjectFilters = TableFilters & {
    customer_id: number | null;
    type: string | null;
    status: string | null;
};

type AdminProject = {
    id: number;
    code: string;
    name: string;
    status: string;
    status_label: string;
    is_active: boolean;
    customer: { id: number; name: string } | null;
    start_date: string;
    end_date: string;
    budget: string | number;
    progress_percent: number;
    team_count: number;
    milestones_count: number;
    completed_milestones_count: number;
    created_at: string | null;
};

const columnHelper = createColumnHelper<AdminProject>();

function visitProjects(params: {
    search: string;
    sort: string;
    direction: 'asc' | 'desc';
    page: number;
    per_page: number;
    customer_id: number | null;
    type: string | null;
    status: string | null;
}) {
    router.get(
        index.url(),
        {
            search: params.search || undefined,
            sort: params.sort,
            direction: params.direction,
            page: params.page > 1 ? params.page : undefined,
            per_page: params.per_page !== 15 ? params.per_page : undefined,
            customer_id: params.customer_id ?? undefined,
            type: params.type ?? undefined,
            status: params.status ?? undefined,
        },
        {
            preserveState: true,
            replace: true,
            preserveScroll: true,
        },
    );
}

export default function ProjectsIndex({
    projects,
    filters,
    customers,
    statuses,
}: {
    projects: Paginated<AdminProject>;
    filters: ProjectFilters;
    customers: CustomerOption[];
    statuses: StatusOption[];
}) {
    const canCreate = useCan('projects.create');
    const canUpdate = useCan('projects.update');
    const canDelete = useCan('projects.delete') || useHasRole('super-admin');
    const isFirstSearchEffect = useRef(true);
    const [isLoading, setIsLoading] = useState(false);

    const [search, setSearch] = useState(filters.search);
    const [customerFilter, setCustomerFilter] = useState(
        filters.customer_id ? String(filters.customer_id) : 'all',
    );
    const [typeFilter, setTypeFilter] = useState(filters.type ?? 'all');
    const [statusFilter, setStatusFilter] = useState(filters.status ?? 'all');
    const [sorting, setSorting] = useState<SortingState>([
        {
            id: filters.sort,
            desc: filters.direction === 'desc',
        },
    ]);
    const [pagination, setPagination] = useState<PaginationState>({
        pageIndex: projects.current_page - 1,
        pageSize: projects.per_page,
    });

    useEffect(() => {
        const removeStart = router.on('start', () => setIsLoading(true));
        const removeFinish = router.on('finish', () => setIsLoading(false));

        return () => {
            removeStart();
            removeFinish();
        };
    }, []);

    useEffect(() => {
        setSearch(filters.search);
        setCustomerFilter(
            filters.customer_id ? String(filters.customer_id) : 'all',
        );
        setTypeFilter(filters.type ?? 'all');
        setStatusFilter(filters.status ?? 'all');
        setSorting([
            {
                id: filters.sort,
                desc: filters.direction === 'desc',
            },
        ]);
        setPagination({
            pageIndex: projects.current_page - 1,
            pageSize: projects.per_page,
        });
    }, [filters, projects.current_page, projects.per_page]);

    useEffect(() => {
        if (isFirstSearchEffect.current) {
            isFirstSearchEffect.current = false;
            return;
        }

        const timeout = window.setTimeout(() => {
            const sort = sorting[0];

            visitProjects({
                search,
                sort: sort?.id ?? 'created_at',
                direction: sort?.desc === false ? 'asc' : 'desc',
                page: 1,
                per_page: pagination.pageSize,
                customer_id:
                    customerFilter === 'all' ? null : Number(customerFilter),
                type: typeFilter === 'all' ? null : typeFilter,
                status: statusFilter === 'all' ? null : statusFilter,
            });
        }, 300);

        return () => window.clearTimeout(timeout);
        // eslint-disable-next-line react-hooks/exhaustive-deps
    }, [search]);

    function applyFilters(next: {
        customer_id?: string;
        type?: string;
        status?: string;
    }) {
        const customerId = next.customer_id ?? customerFilter;
        const type = next.type ?? typeFilter;
        const status = next.status ?? statusFilter;
        const sort = sorting[0];

        visitProjects({
            search,
            sort: sort?.id ?? 'created_at',
            direction: sort?.desc === false ? 'asc' : 'desc',
            page: 1,
            per_page: pagination.pageSize,
            customer_id: customerId === 'all' ? null : Number(customerId),
            type: type === 'all' ? null : type,
            status: status === 'all' ? null : status,
        });
    }

    const columns = useMemo(
        () =>
            withSelectionColumn([
                columnHelper.accessor('code', {
                    header: ({ column }) => (
                        <DataTableColumnHeader column={column} title="Code" />
                    ),
                    meta: { label: 'Code' },
                    cell: (info) => (
                        <Link
                            href={show(info.row.original.id)}
                            className="font-mono text-sm hover:underline"
                        >
                            {info.getValue()}
                        </Link>
                    ),
                }),
                columnHelper.accessor('name', {
                    header: ({ column }) => (
                        <DataTableColumnHeader column={column} title="Nom" />
                    ),
                    meta: { label: 'Nom' },
                    cell: (info) => (
                        <Link
                            href={show(info.row.original.id)}
                            className="font-medium hover:underline"
                        >
                            {info.getValue()}
                        </Link>
                    ),
                }),
                columnHelper.accessor('customer', {
                    header: 'Client',
                    enableSorting: false,
                    meta: { label: 'Client' },
                    cell: (info) => (
                        <span className="text-muted-foreground">
                            {info.getValue()?.name ?? 'Interne'}
                        </span>
                    ),
                }),
                columnHelper.accessor('status_label', {
                    header: ({ column }) => (
                        <DataTableColumnHeader column={column} title="Statut" />
                    ),
                    meta: { label: 'Statut' },
                    cell: (info) => (
                        <Badge variant="secondary">{info.getValue()}</Badge>
                    ),
                }),
                columnHelper.accessor('is_active', {
                    header: 'Actif',
                    enableSorting: false,
                    meta: { label: 'Actif' },
                    cell: (info) =>
                        info.getValue() ? (
                            <Badge variant="secondary">Actif</Badge>
                        ) : (
                            <Badge variant="outline">Inactif</Badge>
                        ),
                }),
                columnHelper.accessor('start_date', {
                    header: ({ column }) => (
                        <DataTableColumnHeader column={column} title="Début" />
                    ),
                    meta: { label: 'Début' },
                    cell: (info) => formatDate(info.getValue()),
                }),
                columnHelper.accessor('end_date', {
                    header: ({ column }) => (
                        <DataTableColumnHeader column={column} title="Fin" />
                    ),
                    meta: { label: 'Fin' },
                    cell: (info) => formatDate(info.getValue()),
                }),
                columnHelper.accessor('budget', {
                    header: ({ column }) => (
                        <DataTableColumnHeader column={column} title="Budget" />
                    ),
                    meta: { label: 'Budget' },
                    cell: (info) => (
                        <span className="tabular-nums">
                            {formatCurrency(info.getValue())}
                        </span>
                    ),
                }),
                columnHelper.accessor('progress_percent', {
                    header: ({ column }) => (
                        <DataTableColumnHeader
                            column={column}
                            title="Avancement"
                        />
                    ),
                    meta: { label: 'Avancement' },
                    cell: (info) => {
                        const value = info.getValue();

                        return (
                            <div className="flex min-w-28 items-center gap-2">
                                <div className="bg-muted h-2 flex-1 overflow-hidden rounded-full">
                                    <div
                                        className={cn('bg-primary h-full')}
                                        style={{ width: `${value}%` }}
                                    />
                                </div>
                                <span className="text-muted-foreground w-10 text-right text-xs tabular-nums">
                                    {value} %
                                </span>
                            </div>
                        );
                    },
                }),
                columnHelper.accessor('team_count', {
                    header: 'Équipe',
                    enableSorting: false,
                    meta: { label: 'Équipe' },
                    cell: (info) => (
                        <span className="tabular-nums">{info.getValue()}</span>
                    ),
                }),
                columnHelper.display({
                    id: 'milestones',
                    header: 'Jalons',
                    cell: ({ row }) => (
                        <span className="text-muted-foreground tabular-nums text-sm">
                            {row.original.completed_milestones_count}/
                            {row.original.milestones_count}
                        </span>
                    ),
                }),
                columnHelper.accessor('created_at', {
                    header: ({ column }) => (
                        <DataTableColumnHeader
                            column={column}
                            title="Créé le"
                        />
                    ),
                    meta: { label: 'Créé le' },
                    cell: (info) => (
                        <span className="text-muted-foreground">
                            {formatDate(info.getValue())}
                        </span>
                    ),
                }),
                columnHelper.display({
                    id: 'actions',
                    enableSorting: false,
                    enableHiding: false,
                    header: () => <div className="text-right">Actions</div>,
                    cell: ({ row }) => {
                        const project = row.original;

                        return (
                            <div className="flex justify-end gap-2">
                                <Button variant="outline" size="sm" asChild>
                                    <Link href={show(project.id)}>Voir</Link>
                                </Button>
                                {canUpdate && (
                                    <Button
                                        variant="outline"
                                        size="sm"
                                        asChild
                                    >
                                        <Link href={edit(project.id)}>
                                            <Pencil />
                                            Modifier
                                        </Link>
                                    </Button>
                                )}
                                {canDelete && (
                                    <ConfirmDialog
                                        trigger={
                                            <Button
                                                variant="destructive"
                                                size="sm"
                                            >
                                                <Trash2 />
                                                Supprimer
                                            </Button>
                                        }
                                        title={`Supprimer le projet ${project.name} ?`}
                                        description="Cette action est irréversible."
                                        confirmLabel="Supprimer"
                                        onConfirm={() => {
                                            router.delete(
                                                ProjectController.destroy.url(
                                                    project.id,
                                                ),
                                                { preserveScroll: true },
                                            );
                                        }}
                                    />
                                )}
                            </div>
                        );
                    },
                }),
            ] as ColumnDef<AdminProject>[]),
        [canUpdate, canDelete],
    );

    return (
        <>
            <Head title="Projets classiques" />

            <div className="flex h-full flex-1 flex-col gap-6 p-4 md:p-6">
                <div className="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
                    <Heading
                        title="Projets classiques"
                        description="Gestion des projets internes ou pour le compte de clients"
                    />
                    {canCreate && (
                        <Button asChild>
                            <Link href={create()}>
                                <Plus />
                                Nouveau projet
                            </Link>
                        </Button>
                    )}
                </div>

                <div className="flex flex-wrap gap-3">
                    <Select
                        value={customerFilter}
                        onValueChange={(value) => {
                            setCustomerFilter(value);
                            applyFilters({ customer_id: value });
                        }}
                    >
                        <SelectTrigger className="w-55">
                            <SelectValue placeholder="Client" />
                        </SelectTrigger>
                        <SelectContent>
                            <SelectItem value="all">Tous les clients</SelectItem>
                            {customers.map((customer) => (
                                <SelectItem
                                    key={customer.id}
                                    value={String(customer.id)}
                                >
                                    {customer.name}
                                </SelectItem>
                            ))}
                        </SelectContent>
                    </Select>

                    <Select
                        value={typeFilter}
                        onValueChange={(value) => {
                            setTypeFilter(value);
                            applyFilters({ type: value });
                        }}
                    >
                        <SelectTrigger className="w-40">
                            <SelectValue placeholder="Type" />
                        </SelectTrigger>
                        <SelectContent>
                            <SelectItem value="all">Tous les types</SelectItem>
                            <SelectItem value="client">Client</SelectItem>
                            <SelectItem value="internal">Interne</SelectItem>
                        </SelectContent>
                    </Select>

                    <Select
                        value={statusFilter}
                        onValueChange={(value) => {
                            setStatusFilter(value);
                            applyFilters({ status: value });
                        }}
                    >
                        <SelectTrigger className="w-45">
                            <SelectValue placeholder="Statut" />
                        </SelectTrigger>
                        <SelectContent>
                            <SelectItem value="all">Tous les statuts</SelectItem>
                            {statuses.map((status) => (
                                <SelectItem
                                    key={status.value}
                                    value={status.value}
                                >
                                    {status.label}
                                </SelectItem>
                            ))}
                        </SelectContent>
                    </Select>
                </div>

                <DataTable
                    id="admin-projects"
                    columns={columns}
                    data={projects.data}
                    getRowId={(row) => String(row.id)}
                    isLoading={isLoading}
                    searchValue={search}
                    onSearchChange={setSearch}
                    searchPlaceholder="Rechercher par code ou nom…"
                    emptyMessage="Aucun projet."
                    sorting={sorting}
                    onSortingChange={(updater) => {
                        const next =
                            typeof updater === 'function'
                                ? updater(sorting)
                                : updater;
                        setSorting(next);

                        const sort = next[0];
                        visitProjects({
                            search,
                            sort: sort?.id ?? 'created_at',
                            direction: sort?.desc === false ? 'asc' : 'desc',
                            page: 1,
                            per_page: pagination.pageSize,
                            customer_id:
                                customerFilter === 'all'
                                    ? null
                                    : Number(customerFilter),
                            type: typeFilter === 'all' ? null : typeFilter,
                            status:
                                statusFilter === 'all' ? null : statusFilter,
                        });
                    }}
                    manualSorting
                    pagination={pagination}
                    onPaginationChange={(updater) => {
                        const next =
                            typeof updater === 'function'
                                ? updater(pagination)
                                : updater;
                        const pageChanged =
                            next.pageIndex !== pagination.pageIndex;
                        const sizeChanged =
                            next.pageSize !== pagination.pageSize;

                        setPagination(next);

                        if (!pageChanged && !sizeChanged) {
                            return;
                        }

                        const sort = sorting[0];
                        visitProjects({
                            search,
                            sort: sort?.id ?? 'created_at',
                            direction: sort?.desc === false ? 'asc' : 'desc',
                            page: sizeChanged ? 1 : next.pageIndex + 1,
                            per_page: next.pageSize,
                            customer_id:
                                customerFilter === 'all'
                                    ? null
                                    : Number(customerFilter),
                            type: typeFilter === 'all' ? null : typeFilter,
                            status:
                                statusFilter === 'all' ? null : statusFilter,
                        });
                    }}
                    manualPagination
                    pageCount={projects.last_page}
                    totalRows={projects.total}
                    bulkActions={
                        canDelete
                            ? ({ rows, clearSelection }) => (
                                  <DataTableBulkDelete
                                      count={rows.length}
                                      label="Supprimer"
                                      confirmTitle={`Supprimer ${rows.length} projet${rows.length > 1 ? 's' : ''} ?`}
                                      onDelete={() => {
                                          router.delete(
                                              ProjectController.bulkDestroy.url(),
                                              {
                                                  data: {
                                                      ids: rows.map(
                                                          (row) => row.id,
                                                      ),
                                                  },
                                                  preserveScroll: true,
                                                  onSuccess: () =>
                                                      clearSelection(),
                                              },
                                          );
                                      }}
                                  />
                              )
                            : undefined
                    }
                />
            </div>
        </>
    );
}

ProjectsIndex.layout = {
    breadcrumbs: [
        { title: 'Tableau de bord', href: dashboard() },
        { title: 'Projets classiques', href: index() },
    ],
};