import { Head, router, useForm, usePage } from '@inertiajs/react';
import { Pencil, Plus, Trash2 } from 'lucide-react';
import { FormEvent, useState } from 'react';
import {
    PaginationControls,
    type PaginatedData,
    SortableHeader,
    type TableFilters,
} from '@/components/data-table-controls';
import Heading from '@/components/heading';
import InputError from '@/components/input-error';
import { Badge } from '@/components/ui/badge';
import { Button } from '@/components/ui/button';
import { Checkbox } from '@/components/ui/checkbox';
import {
    Dialog,
    DialogContent,
    DialogFooter,
    DialogHeader,
    DialogTitle,
} from '@/components/ui/dialog';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import type { Auth } from '@/types';

type Permission = {
    id: number;
    name: string;
    label: string | null;
    group: string | null;
};

type Role = {
    id: number;
    name: string;
    label: string | null;
    users_count: number;
    created_at: string;
    permissions: Permission[];
};

type PageProps = {
    auth: Auth;
    roles: PaginatedData<Role>;
    permissions: Record<string, Permission[]>;
    filters: TableFilters;
};

type RoleForm = {
    name: string;
    label: string;
    permissions: number[];
};

const emptyForm: RoleForm = {
    name: '',
    label: '',
    permissions: [],
};

export default function RolesIndex({ roles, permissions, filters }: PageProps) {
    const { auth } = usePage<PageProps>().props;
    const [open, setOpen] = useState(false);
    const [editing, setEditing] = useState<Role | null>(null);
    const form = useForm<RoleForm>(emptyForm);
    const can = (permission: string) => auth.permissions.includes(permission);

    const openCreate = () => {
        setEditing(null);
        form.setData(emptyForm);
        form.clearErrors();
        setOpen(true);
    };

    const openEdit = (role: Role) => {
        setEditing(role);
        form.setData({
            name: role.name,
            label: role.label ?? '',
            permissions: role.permissions.map((permission) => permission.id),
        });
        form.clearErrors();
        setOpen(true);
    };

    const togglePermission = (permissionId: number, checked: boolean) => {
        form.setData(
            'permissions',
            checked
                ? [...form.data.permissions, permissionId]
                : form.data.permissions.filter((id) => id !== permissionId),
        );
    };

    const submit = (event: FormEvent) => {
        event.preventDefault();

        if (editing) {
            form.put(`/roles/${editing.id}`, {
                preserveScroll: true,
                onSuccess: () => setOpen(false),
            });
            return;
        }

        form.post('/roles', {
            preserveScroll: true,
            onSuccess: () => setOpen(false),
        });
    };

    const destroy = (role: Role) => {
        if (!window.confirm(`Delete ${role.label ?? role.name}?`)) {
            return;
        }

        router.delete(`/roles/${role.id}`, { preserveScroll: true });
    };

    return (
        <>
            <Head title="Roles" />

            <div className="flex h-full flex-1 flex-col gap-6 overflow-x-auto p-4">
                <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
                    <Heading
                        title="Roles"
                        description="Create roles and assign seeded permissions."
                    />

                    {can('roles.create') && (
                        <Button onClick={openCreate}>
                            <Plus />
                            New role
                        </Button>
                    )}
                </div>

                <div className="overflow-hidden rounded-lg border">
                    <table className="w-full text-sm">
                        <thead className="bg-muted/50 text-left">
                            <tr>
                                <SortableHeader
                                    basePath="/roles"
                                    column="name"
                                    filters={filters}
                                    className="px-4 py-3"
                                >
                                    Role
                                </SortableHeader>
                                <th className="px-4 py-3 font-medium">
                                    Permissions
                                </th>
                                <SortableHeader
                                    basePath="/roles"
                                    column="users_count"
                                    filters={filters}
                                    className="px-4 py-3"
                                >
                                    Users
                                </SortableHeader>
                                <SortableHeader
                                    basePath="/roles"
                                    column="created_at"
                                    filters={filters}
                                    className="px-4 py-3"
                                >
                                    Created
                                </SortableHeader>
                                <th className="w-28 px-4 py-3 text-right font-medium">
                                    Actions
                                </th>
                            </tr>
                        </thead>
                        <tbody className="divide-y">
                            {roles.data.map((role) => (
                                <tr key={role.id}>
                                    <td className="px-4 py-3">
                                        <div className="font-medium">
                                            {role.label ?? role.name}
                                        </div>
                                        <div className="text-xs text-muted-foreground">
                                            {role.name}
                                        </div>
                                    </td>
                                    <td className="px-4 py-3">
                                        <div className="flex max-w-3xl flex-wrap gap-1.5">
                                            {role.permissions.map(
                                                (permission) => (
                                                    <Badge
                                                        key={permission.id}
                                                        variant="secondary"
                                                    >
                                                        {permission.label ??
                                                            permission.name}
                                                    </Badge>
                                                ),
                                            )}
                                        </div>
                                    </td>
                                    <td className="px-4 py-3 text-muted-foreground">
                                        {role.users_count}
                                    </td>
                                    <td className="px-4 py-3 text-muted-foreground">
                                        {new Date(
                                            role.created_at,
                                        ).toLocaleDateString()}
                                    </td>
                                    <td className="px-4 py-3">
                                        <div className="flex justify-end gap-2">
                                            {can('roles.update') && (
                                                <Button
                                                    variant="outline"
                                                    size="icon"
                                                    onClick={() =>
                                                        openEdit(role)
                                                    }
                                                >
                                                    <Pencil />
                                                    <span className="sr-only">
                                                        Edit
                                                    </span>
                                                </Button>
                                            )}
                                            {can('roles.delete') && (
                                                <Button
                                                    variant="destructive"
                                                    size="icon"
                                                    onClick={() =>
                                                        destroy(role)
                                                    }
                                                    disabled={
                                                        role.name === 'admin'
                                                    }
                                                >
                                                    <Trash2 />
                                                    <span className="sr-only">
                                                        Delete
                                                    </span>
                                                </Button>
                                            )}
                                        </div>
                                    </td>
                                </tr>
                            ))}
                        </tbody>
                    </table>
                    <PaginationControls
                        basePath="/roles"
                        filters={filters}
                        meta={roles}
                    />
                </div>
            </div>

            <Dialog open={open} onOpenChange={setOpen}>
                <DialogContent className="sm:max-w-2xl">
                    <DialogHeader>
                        <DialogTitle>
                            {editing ? 'Edit role' : 'New role'}
                        </DialogTitle>
                    </DialogHeader>

                    <form onSubmit={submit} className="space-y-4">
                        <div className="grid gap-2">
                            <Label htmlFor="name">Name</Label>
                            <Input
                                id="name"
                                value={form.data.name}
                                disabled={editing?.name === 'admin'}
                                onChange={(event) =>
                                    form.setData('name', event.target.value)
                                }
                            />
                            <InputError message={form.errors.name} />
                        </div>

                        <div className="grid gap-2">
                            <Label htmlFor="label">Label</Label>
                            <Input
                                id="label"
                                value={form.data.label}
                                onChange={(event) =>
                                    form.setData('label', event.target.value)
                                }
                            />
                            <InputError message={form.errors.label} />
                        </div>

                        <div className="grid gap-3">
                            <Label>Permissions</Label>
                            <div className="grid max-h-72 gap-4 overflow-y-auto rounded-md border p-3">
                                {Object.entries(permissions).map(
                                    ([group, items]) => (
                                        <div key={group} className="grid gap-2">
                                            <div className="text-sm font-medium capitalize">
                                                {group}
                                            </div>
                                            <div className="grid gap-2 sm:grid-cols-2">
                                                {items.map((permission) => (
                                                    <label
                                                        key={permission.id}
                                                        className="flex items-center gap-2 text-sm"
                                                    >
                                                        <Checkbox
                                                            checked={form.data.permissions.includes(
                                                                permission.id,
                                                            )}
                                                            disabled={
                                                                editing?.name ===
                                                                'admin'
                                                            }
                                                            onCheckedChange={(
                                                                checked,
                                                            ) =>
                                                                togglePermission(
                                                                    permission.id,
                                                                    checked ===
                                                                        true,
                                                                )
                                                            }
                                                        />
                                                        {permission.label ??
                                                            permission.name}
                                                    </label>
                                                ))}
                                            </div>
                                        </div>
                                    ),
                                )}
                            </div>
                            <InputError message={form.errors.permissions} />
                        </div>

                        <DialogFooter>
                            <Button
                                type="button"
                                variant="outline"
                                onClick={() => setOpen(false)}
                            >
                                Cancel
                            </Button>
                            <Button disabled={form.processing}>Save</Button>
                        </DialogFooter>
                    </form>
                </DialogContent>
            </Dialog>
        </>
    );
}

RolesIndex.layout = {
    breadcrumbs: [
        {
            title: 'Roles',
            href: '/roles',
        },
    ],
};
