"use client";

import { useEffect, useState } from "react";
import { Button } from "@app/components/ui/button";
import { Input } from "@app/components/ui/input";
import {
    Select,
    SelectContent,
    SelectItem,
    SelectTrigger,
    SelectValue
} from "@app/components/ui/select";
import {
    Command,
    CommandEmpty,
    CommandGroup,
    CommandInput,
    CommandItem,
    CommandList
} from "@app/components/ui/command";
import {
    Popover,
    PopoverContent,
    PopoverTrigger
} from "@app/components/ui/popover";
import { Check, ChevronsUpDown } from "lucide-react";
import { useForm } from "react-hook-form";
import { zodResolver } from "@hookform/resolvers/zod";
import { z } from "zod";
import {
    Form,
    FormControl,
    FormDescription,
    FormField,
    FormItem,
    FormLabel,
    FormMessage
} from "@app/components/ui/form";
import {
    Credenza,
    CredenzaBody,
    CredenzaClose,
    CredenzaContent,
    CredenzaDescription,
    CredenzaFooter,
    CredenzaHeader,
    CredenzaTitle
} from "@app/components/Credenza";
import { toast } from "@app/hooks/useToast";
import { useTranslations } from "next-intl";
import { createApiClient, formatAxiosError } from "@app/lib/api";
import { useEnvContext } from "@app/hooks/useEnvContext";
import { ListSitesResponse } from "@server/routers/site";
import { ListRolesResponse } from "@server/routers/role";
import { ListUsersResponse } from "@server/routers/user";
import { ListClientsResponse } from "@server/routers/client/listClients";
import { cn } from "@app/lib/cn";
import { Tag, TagInput } from "@app/components/tags/tag-input";
import { Separator } from "@app/components/ui/separator";
import { AxiosResponse } from "axios";
import { UserType } from "@server/types/UserTypes";

type Site = ListSitesResponse["sites"][0];

type CreateInternalResourceDialogProps = {
    open: boolean;
    setOpen: (val: boolean) => void;
    orgId: string;
    sites: Site[];
    onSuccess?: () => void;
};

export default function CreateInternalResourceDialog({
    open,
    setOpen,
    orgId,
    sites,
    onSuccess
}: CreateInternalResourceDialogProps) {
    const t = useTranslations();
    const api = createApiClient(useEnvContext());
    const [isSubmitting, setIsSubmitting] = useState(false);

    const formSchema = z.object({
        name: z
            .string()
            .min(1, t("createInternalResourceDialogNameRequired"))
            .max(255, t("createInternalResourceDialogNameMaxLength")),
        // mode: z.enum(["host", "cidr", "port"]),
        mode: z.enum(["host", "cidr"]),
        destination: z.string().min(1),
        siteId: z.int().positive(t("createInternalResourceDialogPleaseSelectSite")),
        protocol: z.enum(["tcp", "udp"]),
        // proxyPort: z.int()
        //     .positive()
        //     .min(1, t("createInternalResourceDialogProxyPortMin"))
        //     .max(65535, t("createInternalResourceDialogProxyPortMax")),
        // destinationPort: z.int()
        //     .positive()
        //     .min(1, t("createInternalResourceDialogDestinationPortMin"))
        //     .max(65535, t("createInternalResourceDialogDestinationPortMax"))
        //     .nullish(),
        alias: z.string().nullish(),
        roles: z.array(
            z.object({
                id: z.string(),
                text: z.string()
            })
        ).optional(),
        users: z.array(
            z.object({
                id: z.string(),
                text: z.string()
            })
        ).optional(),
        clients: z.array(
            z.object({
                id: z.string(),
                text: z.string()
            })
        ).optional()
    })
    // .refine(
    //     (data) => {
    //         if (data.mode === "port") {
    //             return data.protocol !== undefined && data.protocol !== null;
    //         }
    //         return true;
    //     },
    //     {
    //         error: t("createInternalResourceDialogProtocol") + " is required for port mode",
    //         path: ["protocol"]
    //     }
    // )
    // .refine(
    //     (data) => {
    //         if (data.mode === "port") {
    //             return data.proxyPort !== undefined && data.proxyPort !== null;
    //         }
    //         return true;
    //     },
    //     {
    //         error: t("createInternalResourceDialogSitePort") + " is required for port mode",
    //         path: ["proxyPort"]
    //     }
    // )
    // .refine(
    //     (data) => {
    //         if (data.mode === "port") {
    //             return data.destinationPort !== undefined && data.destinationPort !== null;
    //         }
    //         return true;
    //     },
    //     {
    //         error: t("targetPort") + " is required for port mode",
    //         path: ["destinationPort"]
    //     }
    // );

    type FormData = z.infer<typeof formSchema>;

    const [allRoles, setAllRoles] = useState<{ id: string; text: string }[]>([]);
    const [allUsers, setAllUsers] = useState<{ id: string; text: string }[]>([]);
    const [allClients, setAllClients] = useState<{ id: string; text: string }[]>([]);
    const [activeRolesTagIndex, setActiveRolesTagIndex] = useState<number | null>(null);
    const [activeUsersTagIndex, setActiveUsersTagIndex] = useState<number | null>(null);
    const [activeClientsTagIndex, setActiveClientsTagIndex] = useState<number | null>(null);
    const [hasMachineClients, setHasMachineClients] = useState(false);

    const availableSites = sites.filter(
        (site) => site.type === "newt" && site.subnet
    );

    const form = useForm<FormData>({
        resolver: zodResolver(formSchema),
        defaultValues: {
            name: "",
            siteId: availableSites[0]?.siteId || 0,
            mode: "host",
            protocol: "tcp",
            // proxyPort: undefined,
            destination: "",
            // destinationPort: undefined,
            alias: "",
            roles: [],
            users: [],
            clients: []
        }
    });

    const mode = form.watch("mode");

    useEffect(() => {
        if (open && availableSites.length > 0) {
            form.reset({
                name: "",
                siteId: availableSites[0].siteId,
                mode: "host",
                protocol: "tcp",
                // proxyPort: undefined,
                destination: "",
                // destinationPort: undefined,
                alias: "",
                roles: [],
                users: [],
                clients: []
            });
        }
    }, [open]);

    useEffect(() => {
        const fetchRolesUsersAndClients = async () => {
            try {
                const [rolesResponse, usersResponse, clientsResponse] = await Promise.all([
                    api.get<AxiosResponse<ListRolesResponse>>(`/org/${orgId}/roles`),
                    api.get<AxiosResponse<ListUsersResponse>>(`/org/${orgId}/users`),
                    api.get<AxiosResponse<ListClientsResponse>>(`/org/${orgId}/clients?filter=machine&limit=1000`)
                ]);

                setAllRoles(
                    rolesResponse.data.data.roles
                        .map((role) => ({
                            id: role.roleId.toString(),
                            text: role.name
                        }))
                        .filter((role) => role.text !== "Admin")
                );

                setAllUsers(
                    usersResponse.data.data.users.map((user) => ({
                        id: user.id.toString(),
                        text: `${user.email || user.username}${user.type !== UserType.Internal ? ` (${user.idpName})` : ""}`
                    }))
                );

                const machineClients = clientsResponse.data.data.clients
                    .filter((client) => !client.userId)
                    .map((client) => ({
                        id: client.clientId.toString(),
                        text: client.name
                    }));

                setAllClients(machineClients);
                setHasMachineClients(machineClients.length > 0);
            } catch (error) {
                console.error("Error fetching roles, users, and clients:", error);
            }
        };

        if (open) {
            fetchRolesUsersAndClients();
        }
    }, [open, orgId]);

    const handleSubmit = async (data: FormData) => {
        setIsSubmitting(true);
        try {
            const response = await api.put<AxiosResponse<any>>(
                `/org/${orgId}/site/${data.siteId}/resource`,
                {
                    name: data.name,
                    mode: data.mode,
                    protocol: data.mode === "port" ? data.protocol : undefined,
                    // proxyPort: data.mode === "port" ? data.proxyPort : undefined,
                    // destinationPort: data.mode === "port" ? data.destinationPort : undefined,
                    destination: data.destination,
                    enabled: true,
                    alias: data.alias && typeof data.alias === "string" && data.alias.trim() ? data.alias : undefined
                }
            );

            const siteResourceId = response.data.data.siteResourceId;

            // Set roles and users if provided
            if (data.roles && data.roles.length > 0) {
                await api.post(`/site-resource/${siteResourceId}/roles`, {
                    roleIds: data.roles.map((r) => parseInt(r.id))
                });
            }

            if (data.users && data.users.length > 0) {
                await api.post(`/site-resource/${siteResourceId}/users`, {
                    userIds: data.users.map((u) => u.id)
                });
            }

            if (data.clients && data.clients.length > 0) {
                await api.post(`/site-resource/${siteResourceId}/clients`, {
                    clientIds: data.clients.map((c) => parseInt(c.id))
                });
            }

            toast({
                title: t("createInternalResourceDialogSuccess"),
                description: t("createInternalResourceDialogInternalResourceCreatedSuccessfully"),
                variant: "default"
            });

            onSuccess?.();
            setOpen(false);
        } catch (error) {
            console.error("Error creating internal resource:", error);
            toast({
                title: t("createInternalResourceDialogError"),
                description: formatAxiosError(
                    error,
                    t("createInternalResourceDialogFailedToCreateInternalResource")
                ),
                variant: "destructive"
            });
        } finally {
            setIsSubmitting(false);
        }
    };

    if (availableSites.length === 0) {
        return (
            <Credenza open={open} onOpenChange={setOpen}>
                <CredenzaContent className="max-w-md">
                    <CredenzaHeader>
                        <CredenzaTitle>{t("createInternalResourceDialogNoSitesAvailable")}</CredenzaTitle>
                        <CredenzaDescription>
                            {t("createInternalResourceDialogNoSitesAvailableDescription")}
                        </CredenzaDescription>
                    </CredenzaHeader>
                    <CredenzaFooter>
                        <Button onClick={() => setOpen(false)}>{t("createInternalResourceDialogClose")}</Button>
                    </CredenzaFooter>
                </CredenzaContent>
            </Credenza>
        );
    }

    return (
        <Credenza open={open} onOpenChange={setOpen}>
            <CredenzaContent className="max-w-2xl">
                <CredenzaHeader>
                    <CredenzaTitle>{t("createInternalResourceDialogCreateClientResource")}</CredenzaTitle>
                    <CredenzaDescription>
                        {t("createInternalResourceDialogCreateClientResourceDescription")}
                    </CredenzaDescription>
                </CredenzaHeader>
                <CredenzaBody>
                    <Form {...form}>
                        <form
                            onSubmit={form.handleSubmit(handleSubmit)}
                            className="space-y-6"
                            id="create-internal-resource-form"
                        >
                            {/* Resource Properties Form */}
                            <div>
                                <h3 className="text-lg font-semibold mb-4">
                                    {t("createInternalResourceDialogResourceProperties")}
                                </h3>
                                <div className="space-y-4">
                                    <FormField
                                        control={form.control}
                                        name="name"
                                        render={({ field }) => (
                                            <FormItem>
                                                <FormLabel>{t("createInternalResourceDialogName")}</FormLabel>
                                                <FormControl>
                                                    <Input {...field} />
                                                </FormControl>
                                                <FormMessage />
                                            </FormItem>
                                        )}
                                    />

                                    <FormField
                                        control={form.control}
                                        name="siteId"
                                        render={({ field }) => (
                                            <FormItem className="flex flex-col">
                                                <FormLabel>{t("createInternalResourceDialogSite")}</FormLabel>
                                                <Popover>
                                                    <PopoverTrigger asChild>
                                                        <FormControl>
                                                            <Button
                                                                variant="outline"
                                                                role="combobox"
                                                                className={cn(
                                                                    "w-full justify-between",
                                                                    !field.value && "text-muted-foreground"
                                                                )}
                                                            >
                                                                {field.value
                                                                    ? availableSites.find(
                                                                          (site) => site.siteId === field.value
                                                                      )?.name
                                                                    : t("createInternalResourceDialogSelectSite")}
                                                                <ChevronsUpDown className="ml-2 h-4 w-4 shrink-0 opacity-50" />
                                                            </Button>
                                                        </FormControl>
                                                    </PopoverTrigger>
                                                    <PopoverContent className="w-full p-0">
                                                        <Command>
                                                            <CommandInput placeholder={t("createInternalResourceDialogSearchSites")} />
                                                            <CommandList>
                                                                <CommandEmpty>{t("createInternalResourceDialogNoSitesFound")}</CommandEmpty>
                                                                <CommandGroup>
                                                                    {availableSites.map((site) => (
                                                                        <CommandItem
                                                                            key={site.siteId}
                                                                            value={site.name}
                                                                            onSelect={() => {
                                                                                field.onChange(site.siteId);
                                                                            }}
                                                                        >
                                                                            <Check
                                                                                className={cn(
                                                                                    "mr-2 h-4 w-4",
                                                                                    field.value === site.siteId
                                                                                        ? "opacity-100"
                                                                                        : "opacity-0"
                                                                                )}
                                                                            />
                                                                            {site.name}
                                                                        </CommandItem>
                                                                    ))}
                                                                </CommandGroup>
                                                            </CommandList>
                                                        </Command>
                                                    </PopoverContent>
                                                </Popover>
                                                <FormMessage />
                                            </FormItem>
                                        )}
                                    />

<FormField
                                        control={form.control}
                                        name="mode"
                                        render={({ field }) => (
                                            <FormItem>
                                                <FormLabel>{t("createInternalResourceDialogMode")}</FormLabel>
                                                <Select
                                                    onValueChange={field.onChange}
                                                    value={field.value}
                                                >
                                                    <FormControl>
                                                        <SelectTrigger>
                                                            <SelectValue />
                                                        </SelectTrigger>
                                                    </FormControl>
                                                    <SelectContent>
                                                        <SelectItem value="port">{t("createInternalResourceDialogModePort")}</SelectItem>
                                                        <SelectItem value="host">{t("createInternalResourceDialogModeHost")}</SelectItem>
                                                        <SelectItem value="cidr">{t("createInternalResourceDialogModeCidr")}</SelectItem>
                                                    </SelectContent>
                                                </Select>
                                                <FormMessage />
                                            </FormItem>
                                        )}
                                    />
{/* 
                                    {mode === "port" && (
                                        <>
                                            <div className="grid grid-cols-2 gap-4">
                                                <FormField
                                                    control={form.control}
                                                    name="protocol"
                                                    render={({ field }) => (
                                                        <FormItem>
                                                            <FormLabel>
                                                                {t("createInternalResourceDialogProtocol")}
                                                            </FormLabel>
                                                            <Select
                                                                onValueChange={field.onChange}
                                                                value={field.value ?? undefined}
                                                            >
                                                                <FormControl>
                                                                    <SelectTrigger>
                                                                        <SelectValue />
                                                                    </SelectTrigger>
                                                                </FormControl>
                                                                <SelectContent>
                                                                    <SelectItem value="tcp">
                                                                        {t("createInternalResourceDialogTcp")}
                                                                    </SelectItem>
                                                                    <SelectItem value="udp">
                                                                        {t("createInternalResourceDialogUdp")}
                                                                    </SelectItem>
                                                                </SelectContent>
                                                            </Select>
                                                            <FormMessage />
                                                        </FormItem>
                                                    )}
                                                />

                                                <FormField
                                                    control={form.control}
                                                    name="proxyPort"
                                                    render={({ field }) => (
                                                        <FormItem>
                                                            <FormLabel>{t("createInternalResourceDialogSitePort")}</FormLabel>
                                                            <FormControl>
                                                                <Input
                                                                    type="number"
                                                                    value={field.value || ""}
                                                                    onChange={(e) =>
                                                                        field.onChange(
                                                                            e.target.value === "" ? undefined : parseInt(e.target.value)
                                                                        )
                                                                    }
                                                                />
                                                            </FormControl>
                                                            <FormMessage />
                                                        </FormItem>
                                                    )}
                                                />
                                            </div>
                                        </>
                                    )} */}
                                </div>
                            </div>

                            {/* Target Configuration Form */}
                            <div>
                                <h3 className="text-lg font-semibold mb-4">
                                    {t("createInternalResourceDialogTargetConfiguration")}
                                </h3>
                                <div className="space-y-4">
                                    <FormField
                                        control={form.control}
                                        name="destination"
                                        render={({ field }) => (
                                            <FormItem>
                                                <FormLabel>
                                                    {t("createInternalResourceDialogDestination")}
                                                </FormLabel>
                                                <FormControl>
                                                    <Input {...field} />
                                                </FormControl>
                                                <FormDescription>
                                                    {mode === "host" && t("createInternalResourceDialogDestinationHostDescription")}
                                                    {mode === "cidr" && t("createInternalResourceDialogDestinationCidrDescription")}
                                                    {mode === "port" && t("createInternalResourceDialogDestinationIPDescription")}
                                                </FormDescription>
                                                <FormMessage />
                                            </FormItem>
                                        )}
                                    />

                                    {/* {mode === "port" && (
                                        <FormField
                                            control={form.control}
                                            name="destinationPort"
                                            render={({ field }) => (
                                                <FormItem>
                                                    <FormLabel>
                                                        {t("targetPort")}
                                                    </FormLabel>
                                                    <FormControl>
                                                        <Input
                                                            type="number"
                                                            value={field.value || ""}
                                                            onChange={(e) =>
                                                                field.onChange(
                                                                    e.target.value === "" ? undefined : parseInt(e.target.value)
                                                                )
                                                            }
                                                        />
                                                    </FormControl>
                                                    <FormDescription>
                                                        {t("createInternalResourceDialogDestinationPortDescription")}
                                                    </FormDescription>
                                                    <FormMessage />
                                                </FormItem>
                                            )}
                                        />
                                    )} */}
                                </div>
                            </div>

                            {/* Alias */}
                            {mode !== "cidr" && (
                                <div>
                                    <FormField
                                        control={form.control}
                                        name="alias"
                                        render={({ field }) => (
                                            <FormItem>
                                                <FormLabel>{t("createInternalResourceDialogAlias")}</FormLabel>
                                                <FormControl>
                                                    <Input {...field} value={field.value ?? ""} />
                                                </FormControl>
                                                <FormDescription>
                                                    {t("createInternalResourceDialogAliasDescription")}
                                                </FormDescription>
                                                <FormMessage />
                                            </FormItem>
                                        )}
                                    />
                                </div>
                            )}

                            {/* Access Control Section */}
                            <div>
                                <h3 className="text-lg font-semibold mb-4">
                                    {t("resourceUsersRoles")}
                                </h3>
                                <div className="space-y-4">
                                    <FormField
                                        control={form.control}
                                        name="roles"
                                        render={({ field }) => (
                                            <FormItem className="flex flex-col items-start">
                                                <FormLabel>{t("roles")}</FormLabel>
                                                <FormControl>
                                                    <TagInput
                                                        {...field}
                                                        activeTagIndex={activeRolesTagIndex}
                                                        setActiveTagIndex={setActiveRolesTagIndex}
                                                        placeholder={t("accessRoleSelect2")}
                                                        size="sm"
                                                        tags={form.getValues().roles || []}
                                                        setTags={(newRoles) => {
                                                            form.setValue(
                                                                "roles",
                                                                newRoles as [Tag, ...Tag[]]
                                                            );
                                                        }}
                                                        enableAutocomplete={true}
                                                        autocompleteOptions={allRoles}
                                                        allowDuplicates={false}
                                                        restrictTagsToAutocompleteOptions={true}
                                                        sortTags={true}
                                                    />
                                                </FormControl>
                                                <FormMessage />
                                                <FormDescription>
                                                    {t("resourceRoleDescription")}
                                                </FormDescription>
                                            </FormItem>
                                        )}
                                    />
                                    <FormField
                                        control={form.control}
                                        name="users"
                                        render={({ field }) => (
                                            <FormItem className="flex flex-col items-start">
                                                <FormLabel>{t("users")}</FormLabel>
                                                <FormControl>
                                                    <TagInput
                                                        {...field}
                                                        activeTagIndex={activeUsersTagIndex}
                                                        setActiveTagIndex={setActiveUsersTagIndex}
                                                        placeholder={t("accessUserSelect")}
                                                        tags={form.getValues().users || []}
                                                        size="sm"
                                                        setTags={(newUsers) => {
                                                            form.setValue(
                                                                "users",
                                                                newUsers as [Tag, ...Tag[]]
                                                            );
                                                        }}
                                                        enableAutocomplete={true}
                                                        autocompleteOptions={allUsers}
                                                        allowDuplicates={false}
                                                        restrictTagsToAutocompleteOptions={true}
                                                        sortTags={true}
                                                    />
                                                </FormControl>
                                                <FormMessage />
                                            </FormItem>
                                        )}
                                    />
                                    {hasMachineClients && (
                                        <FormField
                                            control={form.control}
                                            name="clients"
                                            render={({ field }) => (
                                                <FormItem className="flex flex-col items-start">
                                                    <FormLabel>{t("clients")}</FormLabel>
                                                    <FormControl>
                                                        <TagInput
                                                            {...field}
                                                            activeTagIndex={activeClientsTagIndex}
                                                            setActiveTagIndex={setActiveClientsTagIndex}
                                                            placeholder={t("accessClientSelect") || "Select machine clients"}
                                                            size="sm"
                                                            tags={form.getValues().clients || []}
                                                            setTags={(newClients) => {
                                                                form.setValue(
                                                                    "clients",
                                                                    newClients as [Tag, ...Tag[]]
                                                                );
                                                            }}
                                                            enableAutocomplete={true}
                                                            autocompleteOptions={allClients}
                                                            allowDuplicates={false}
                                                            restrictTagsToAutocompleteOptions={true}
                                                            sortTags={true}
                                                        />
                                                    </FormControl>
                                                    <FormMessage />
                                                    <FormDescription>
                                                        {t("resourceClientDescription") || "Machine clients that can access this resource"}
                                                    </FormDescription>
                                                </FormItem>
                                            )}
                                        />
                                    )}
                                </div>
                            </div>
                        </form>
                    </Form>
                </CredenzaBody>
                <CredenzaFooter>
                    <Button
                        variant="outline"
                        onClick={() => setOpen(false)}
                        disabled={isSubmitting}
                    >
                        {t("createInternalResourceDialogCancel")}
                    </Button>
                    <Button
                        type="submit"
                        form="create-internal-resource-form"
                        disabled={isSubmitting}
                        loading={isSubmitting}
                    >
                        {t("createInternalResourceDialogCreateResource")}
                    </Button>
                </CredenzaFooter>
            </CredenzaContent>
        </Credenza>
    );
}