"use client"

import { zodResolver } from "@hookform/resolvers/zod"
import { Loader2 } from "lucide-react"
import { type ComponentProps, useContext, useState } from "react"
import { useForm } from "react-hook-form"
import * as z from "zod"

import { AuthUIContext } from "../../../lib/auth-ui-provider"
import { cn, getLocalizedError } from "../../../lib/utils"
import { PasswordInput } from "../../password-input"
import { Button } from "../../ui/button"
import {
    Dialog,
    DialogContent,
    DialogDescription,
    DialogFooter,
    DialogHeader,
    DialogTitle
} from "../../ui/dialog"
import {
    Form,
    FormControl,
    FormField,
    FormItem,
    FormLabel,
    FormMessage
} from "../../ui/form"
import type { SettingsCardClassNames } from "../shared/settings-card"
import { BackupCodesDialog } from "./backup-codes-dialog"

interface TwoFactorPasswordDialogProps extends ComponentProps<typeof Dialog> {
    classNames?: SettingsCardClassNames
    isTwoFactorEnabled: boolean
}

export function TwoFactorPasswordDialog({
    classNames,
    onOpenChange,
    isTwoFactorEnabled,
    ...props
}: TwoFactorPasswordDialogProps) {
    const {
        localization,
        authClient,
        basePath,
        viewPaths,
        navigate,
        toast,
        twoFactor,
        localizeErrors
    } = useContext(AuthUIContext)
    const [showBackupCodesDialog, setShowBackupCodesDialog] = useState(false)
    const [backupCodes, setBackupCodes] = useState<string[]>([])
    const [totpURI, setTotpURI] = useState<string | null>(null)

    const formSchema = z.object({
        password: z.string().min(1, { message: localization.PASSWORD_REQUIRED })
    })

    const form = useForm({
        resolver: zodResolver(formSchema),
        defaultValues: {
            password: ""
        }
    })

    const { isSubmitting } = form.formState

    async function enableTwoFactor({ password }: z.infer<typeof formSchema>) {
        try {
            const response = await authClient.twoFactor.enable({
                password,
                fetchOptions: { throw: true }
            })

            onOpenChange?.(false)
            setBackupCodes(response.backupCodes)

            if (twoFactor?.includes("totp")) {
                setTotpURI(response.totpURI)
            }

            setTimeout(() => {
                setShowBackupCodesDialog(true)
            }, 250)
        } catch (error) {
            toast({
                variant: "error",
                message: getLocalizedError({
                    error,
                    localization,
                    localizeErrors
                })
            })
        }
    }

    async function disableTwoFactor({ password }: z.infer<typeof formSchema>) {
        try {
            await authClient.twoFactor.disable({
                password,
                fetchOptions: { throw: true }
            })

            toast({
                variant: "success",
                message: localization.TWO_FACTOR_DISABLED
            })

            onOpenChange?.(false)
        } catch (error) {
            toast({
                variant: "error",
                message: getLocalizedError({
                    error,
                    localization,
                    localizeErrors
                })
            })
        }
    }

    return (
        <>
            <Dialog onOpenChange={onOpenChange} {...props}>
                <DialogContent
                    className={cn("sm:max-w-md", classNames?.dialog)}
                >
                    <DialogHeader className={classNames?.dialog?.header}>
                        <DialogTitle className={classNames?.title}>
                            {localization.TWO_FACTOR}
                        </DialogTitle>

                        <DialogDescription className={classNames?.description}>
                            {isTwoFactorEnabled
                                ? localization.TWO_FACTOR_DISABLE_INSTRUCTIONS
                                : localization.TWO_FACTOR_ENABLE_INSTRUCTIONS}
                        </DialogDescription>
                    </DialogHeader>

                    <Form {...form}>
                        <form
                            onSubmit={form.handleSubmit(
                                isTwoFactorEnabled
                                    ? disableTwoFactor
                                    : enableTwoFactor
                            )}
                            className="grid gap-4"
                        >
                            <FormField
                                control={form.control}
                                name="password"
                                render={({ field }) => (
                                    <FormItem>
                                        <FormLabel
                                            className={classNames?.label}
                                        >
                                            {localization.PASSWORD}
                                        </FormLabel>

                                        <FormControl>
                                            <PasswordInput
                                                className={classNames?.input}
                                                placeholder={
                                                    localization.PASSWORD_PLACEHOLDER
                                                }
                                                autoComplete="current-password"
                                                {...field}
                                            />
                                        </FormControl>

                                        <FormMessage
                                            className={classNames?.error}
                                        />
                                    </FormItem>
                                )}
                            />

                            <DialogFooter
                                className={classNames?.dialog?.footer}
                            >
                                <Button
                                    type="button"
                                    variant="secondary"
                                    onClick={() => onOpenChange?.(false)}
                                    className={cn(
                                        classNames?.button,
                                        classNames?.secondaryButton
                                    )}
                                >
                                    {localization.CANCEL}
                                </Button>

                                <Button
                                    type="submit"
                                    disabled={isSubmitting}
                                    className={cn(
                                        classNames?.button,
                                        classNames?.primaryButton
                                    )}
                                >
                                    {isSubmitting && (
                                        <Loader2 className="animate-spin" />
                                    )}
                                    {isTwoFactorEnabled
                                        ? localization.DISABLE_TWO_FACTOR
                                        : localization.ENABLE_TWO_FACTOR}
                                </Button>
                            </DialogFooter>
                        </form>
                    </Form>
                </DialogContent>
            </Dialog>

            <BackupCodesDialog
                classNames={classNames}
                open={showBackupCodesDialog}
                onOpenChange={(open) => {
                    setShowBackupCodesDialog(open)

                    if (!open) {
                        const url = `${basePath}/${viewPaths.TWO_FACTOR}`
                        navigate(
                            twoFactor?.includes("totp") && totpURI
                                ? `${url}?totpURI=${totpURI}`
                                : url
                        )
                    }
                }}
                backupCodes={backupCodes}
            />
        </>
    )
}