import { useState } from "react";
import { clsx } from "keycloakify/tools/clsx";
import { useConstCallback } from "../tools/useConstCallback";
import type { FormEventHandler } from "react";
import { type PageProps, defaultClasses } from "keycloakify/pages/PageProps";
import { useGetClassName } from "keycloakify/lib/useGetClassName";
import type { KcContext } from "../kcContext";
import type { I18n } from "../i18n";

export default function LoginPassword(props: PageProps<Extract<KcContext, { "pageId": "login-password.ftl" }>, I18n>) {
    const { kcContext, i18n, doUseDefaultCss, Template, classes } = props;

    const { getClassName } = useGetClassName({
        "defaultClasses": !doUseDefaultCss ? undefined : defaultClasses,
        classes
    });

    const { realm, url, login } = kcContext;

    const { msg, msgStr } = i18n;

    const [isLoginButtonDisabled, setIsLoginButtonDisabled] = useState(false);

    const onSubmit = useConstCallback<FormEventHandler<HTMLFormElement>>(e => {
        e.preventDefault();

        setIsLoginButtonDisabled(true);

        const formElement = e.target as HTMLFormElement;

        formElement.submit();
    });

    return (
        <Template
            {...{ kcContext, i18n, doUseDefaultCss, classes }}
            headerNode={msg("doLogIn")}
            formNode={
                <div id="kc-form">
                    <div id="kc-form-wrapper">
                        <form id="kc-form-login" onSubmit={onSubmit} action={url.loginAction} method="post">
                            <div className={getClassName("kcFormGroupClass")}>
                                <hr />
                                <label htmlFor="password" className={getClassName("kcLabelClass")}>
                                    {msg("password")}
                                </label>
                                <input
                                    tabIndex={2}
                                    id="password"
                                    className={getClassName("kcInputClass")}
                                    name="password"
                                    type="password"
                                    autoFocus={true}
                                    autoComplete="on"
                                    defaultValue={login.password ?? ""}
                                />
                            </div>
                            <div className={clsx(getClassName("kcFormGroupClass"), getClassName("kcFormSettingClass"))}>
                                <div id="kc-form-options" />
                                <div className={getClassName("kcFormOptionsWrapperClass")}>
                                    {realm.resetPasswordAllowed && (
                                        <span>
                                            <a tabIndex={5} href={url.loginResetCredentialsUrl}>
                                                {msg("doForgotPassword")}
                                            </a>
                                        </span>
                                    )}
                                </div>
                            </div>
                            <div id="kc-form-buttons" className={getClassName("kcFormGroupClass")}>
                                <input
                                    tabIndex={4}
                                    className={clsx(
                                        getClassName("kcButtonClass"),
                                        getClassName("kcButtonPrimaryClass"),
                                        getClassName("kcButtonBlockClass"),
                                        getClassName("kcButtonLargeClass")
                                    )}
                                    name="login"
                                    id="kc-login"
                                    type="submit"
                                    value={msgStr("doLogIn")}
                                    disabled={isLoginButtonDisabled}
                                />
                            </div>
                        </form>
                    </div>
                </div>
            }
        />
    );
}