import type { ThemeType, LoginThemePageId } from "keycloakify/bin/shared/constants";
import { assert } from "tsafe/assert";
import type { Equals } from "tsafe";
import type { MessageKey } from "../i18n/i18n";

type ExtractAfterStartingWith<Prefix extends string, StrEnum> = StrEnum extends `${Prefix}${infer U}` ? U : never;

/** Take theses type definition with a grain of salt.
 * Some values might be undefined on some pages.
 * (ex: url.loginAction is undefined on error.ftl)
 */
export type KcContext =
    | KcContext.Login
    | KcContext.Register
    | KcContext.Info
    | KcContext.Error
    | KcContext.LoginResetPassword
    | KcContext.LoginVerifyEmail
    | KcContext.Terms
    | KcContext.LoginDeviceVerifyUserCode
    | KcContext.LoginOauthGrant
    | KcContext.LoginOtp
    | KcContext.LoginUsername
    | KcContext.WebauthnAuthenticate
    | KcContext.WebauthnRegister
    | KcContext.LoginPassword
    | KcContext.LoginUpdatePassword
    | KcContext.LoginUpdateProfile
    | KcContext.LoginIdpLinkConfirm
    | KcContext.LoginIdpLinkEmail
    | KcContext.LoginPageExpired
    | KcContext.LoginConfigTotp
    | KcContext.LogoutConfirm
    | KcContext.IdpReviewUserProfile
    | KcContext.UpdateEmail
    | KcContext.SelectAuthenticator
    | KcContext.SamlPostForm
    | KcContext.DeleteCredential
    | KcContext.Code
    | KcContext.DeleteAccountConfirm
    | KcContext.FrontchannelLogout
    | KcContext.LoginRecoveryAuthnCodeConfig
    | KcContext.LoginRecoveryAuthnCodeInput
    | KcContext.LoginResetOtp
    | KcContext.LoginX509Info
    | KcContext.WebauthnError;

assert<KcContext["themeType"] extends ThemeType ? true : false>();

export declare namespace KcContext {
    export type Common = {
        themeVersion: string;
        keycloakifyVersion: string;
        themeType: "login";
        themeName: string;
        url: {
            loginAction: string;
            resourcesPath: string;
            resourcesCommonPath: string;
            loginRestartFlowUrl: string;
            loginUrl: string;
            ssoLoginInOtherTabsUrl: string;
        };
        realm: {
            name: string;
            displayName?: string;
            displayNameHtml?: string;
            internationalizationEnabled: boolean;
            registrationEmailAsUsername: boolean;
        };
        /** Undefined if !realm.internationalizationEnabled */
        locale?: {
            supported: {
                url: string;
                label: string;
                languageTag: string;
            }[];
            currentLanguageTag: string;
        };
        auth?: {
            showUsername?: boolean;
            showResetCredentials?: boolean;
            showTryAnotherWayLink?: boolean;
            attemptedUsername?: string;
        };
        scripts: string[];
        message?: {
            type: "success" | "warning" | "error" | "info";
            summary: string;
        };
        client: {
            clientId: string;
            name?: string;
            description?: string;
            attributes: Record<string, string>;
        };
        isAppInitiatedAction?: boolean;
        messagesPerField: {
            /**
             * Return text if message for given field exists. Useful eg. to add css styles for fields with message.
             *
             * @param fieldName to check for
             * @param text to return
             * @return text if message exists for given field, else undefined
             */
            printIfExists: <T extends string>(fieldName: string, text: T) => T | undefined;
            /**
             * Check if exists error message for given fields
             *
             * @param fields
             * @return boolean
             */
            existsError: (fieldName: string, ...otherFiledNames: string[]) => boolean;
            /**
             * Get message for given field.
             *
             * @param fieldName
             * @return message text or empty string
             */
            get: (fieldName: string) => string;
            /**
             * Check if message for given field exists
             *
             * @param field
             * @return boolean
             */
            exists: (fieldName: string) => boolean;

            getFirstError: (...fieldNames: string[]) => string;
        };
        properties: Record<string, string | undefined>;
        authenticationSession?: {
            authSessionId: string;
            tabId: string;
            ssoLoginInOtherTabsUrl: string;
        };
    };

    export type SamlPostForm = Common & {
        pageId: "saml-post-form.ftl";
        samlPost: {
            url: string;
            SAMLRequest?: string;
            SAMLResponse?: string;
            relayState?: string;
        };
    };

    export type Login = Common & {
        pageId: "login.ftl";
        url: {
            loginResetCredentialsUrl: string;
            registrationUrl: string;
        };
        realm: {
            loginWithEmailAllowed: boolean;
            rememberMe: boolean;
            password: boolean;
            resetPasswordAllowed: boolean;
            registrationAllowed: boolean;
        };
        auth: {
            selectedCredential?: string;
        };
        registrationDisabled: boolean;
        login: {
            username?: string;
            rememberMe?: string; // "on" | undefined
            password?: string;
        };
        usernameHidden?: boolean;
        social: {
            displayInfo: boolean;
            providers?: {
                loginUrl: string;
                alias: string;
                providerId: string;
                displayName: string;
                iconClasses?: string;
            }[];
        };
    };

    export type Register = Common & {
        pageId: "register.ftl";
        profile: UserProfile;
        url: {
            registrationAction: string;
        };
        passwordRequired: boolean;
        recaptchaRequired: boolean;
        recaptchaSiteKey?: string;
        /**
         * Theses values are added by: https://github.com/jcputney/keycloak-theme-additional-info-extension
         * A Keycloak Java extension used as dependency in Keycloakify.
         */
        passwordPolicies?: PasswordPolicies;
        termsAcceptanceRequired?: boolean;
    };

    export type Info = Common & {
        pageId: "info.ftl";
        messageHeader?: string;
        requiredActions?: ExtractAfterStartingWith<"requiredAction.", MessageKey>[];
        skipLink: boolean;
        pageRedirectUri?: string;
        actionUri?: string;
        client: {
            baseUrl?: string;
        };
    };

    export type Error = Common & {
        pageId: "error.ftl";
        client?: {
            baseUrl?: string;
        };
        message: NonNullable<Common["message"]>;
        skipLink?: boolean;
    };

    export type LoginResetPassword = Common & {
        pageId: "login-reset-password.ftl";
        realm: {
            loginWithEmailAllowed: boolean;
            duplicateEmailsAllowed: boolean;
        };
        url: {
            loginResetCredentialsUrl: string;
        };
        auth: {
            attemptedUsername?: string;
        };
    };

    export type LoginVerifyEmail = Common & {
        pageId: "login-verify-email.ftl";
        //NOTE: Optional because maybe it wasn't defined in older keycloak versions.
        user?: {
            email: string;
        };
    };

    export type Terms = Common & {
        pageId: "terms.ftl";
        //NOTE: Optional because maybe it wasn't defined in older keycloak versions.
        user?: {
            id: string;
            username: string;
            attributes: Record<string, string[]>;
            email: string;
            emailVerified: boolean;
            firstName?: string;
            lastName?: string;
            markedForEviction?: boolean;
        };
    };

    export type LoginDeviceVerifyUserCode = Common & {
        pageId: "login-oauth2-device-verify-user-code.ftl";
        url: {
            oauth2DeviceVerificationAction: string;
        };
    };

    export type LoginOauthGrant = Common & {
        pageId: "login-oauth-grant.ftl";
        oauth: {
            code: string;
            client: string;
            clientScopesRequested: {
                consentScreenText: string;
                dynamicScopeParameter?: string;
            }[];
        };
        url: {
            oauthAction: string;
        };
    };

    export type LoginOtp = Common & {
        pageId: "login-otp.ftl";
        otpLogin: {
            userOtpCredentials: {
                id: string;
                userLabel: string;
            }[];
            selectedCredentialId?: string;
        };
    };

    export type LoginUsername = Common & {
        pageId: "login-username.ftl";
        url: {
            loginResetCredentialsUrl: string;
            registrationUrl: string;
        };
        realm: {
            loginWithEmailAllowed: boolean;
            rememberMe: boolean;
            password: boolean;
            resetPasswordAllowed: boolean;
            registrationAllowed: boolean;
        };
        registrationDisabled: boolean;
        login: {
            username?: string;
            rememberMe?: string;
        };
        usernameHidden?: boolean;
        social: Login["social"];
    };

    export type LoginPassword = Common & {
        pageId: "login-password.ftl";
        url: {
            loginResetCredentialsUrl: string;
            registrationUrl: string;
        };
        realm: {
            resetPasswordAllowed: boolean;
        };
        auth?: {
            showUsername?: boolean;
            showResetCredentials?: boolean;
            showTryAnotherWayLink?: boolean;
            attemptedUsername?: string;
        };
        social: {
            displayInfo: boolean;
        };
    };

    export type WebauthnAuthenticate = Common & {
        pageId: "webauthn-authenticate.ftl";
        authenticators: {
            authenticators: WebauthnAuthenticate.WebauthnAuthenticator[];
        };
        challenge: string;
        // I hate this:
        userVerification: UserVerificationRequirement | "not specified";
        rpId: string;
        createTimeout: string;
        isUserIdentified: "true" | "false";
        shouldDisplayAuthenticators: boolean;
        social: {
            displayInfo: boolean;
        };
        login: {};
        realm: {
            password: boolean;
            registrationAllowed: boolean;
        };
        registrationDisabled?: boolean;
        url: {
            registrationUrl?: string;
        };
    };

    export namespace WebauthnAuthenticate {
        export type WebauthnAuthenticator = {
            credentialId: string;
            transports: {
                iconClass: string;
                displayNameProperties?: MessageKey[];
            };
            label: string;
            createdAt: string;
        };
    }

    export type WebauthnRegister = Common & {
        pageId: "webauthn-register.ftl";
        challenge: string;
        userid: string;
        username: string;
        signatureAlgorithms: string[];
        rpEntityName: string;
        rpId: string;
        attestationConveyancePreference: string;
        authenticatorAttachment: string;
        requireResidentKey: string;
        userVerificationRequirement: string;
        createTimeout: number;
        excludeCredentialIds: string;
        isSetRetry?: boolean;
        isAppInitiatedAction?: boolean;
    };

    export type LoginUpdatePassword = Common & {
        pageId: "login-update-password.ftl";
    };

    export type LoginIdpLinkConfirm = Common & {
        pageId: "login-idp-link-confirm.ftl";
        idpAlias: string;
    };

    export type LoginIdpLinkEmail = Common & {
        pageId: "login-idp-link-email.ftl";
        brokerContext: {
            username: string;
        };
        idpAlias: string;
    };

    export type LoginPageExpired = Common & {
        pageId: "login-page-expired.ftl";
    };

    export type LoginConfigTotp = Common & {
        pageId: "login-config-totp.ftl";
        mode?: "qr" | "manual" | undefined | null;
        totp: {
            totpSecretEncoded: string;
            qrUrl: string;
            policy: {
                algorithm: "HmacSHA1" | "HmacSHA256" | "HmacSHA512";
                digits: number;
                lookAheadWindow: number;
                getAlgorithmKey: () => string;
            } & (
                | {
                      type: "totp";
                      period: number;
                  }
                | {
                      type: "hotp";
                      initialCounter: number;
                  }
            );
            supportedApplications: string[];
            totpSecretQrCode: string;
            manualUrl: string;
            totpSecret: string;
            otpCredentials: { id: string; userLabel: string }[];
        };
    };

    export type LogoutConfirm = Common & {
        pageId: "logout-confirm.ftl";
        url: {
            logoutConfirmAction: string;
        };
        client: {
            baseUrl?: string;
        };
        logoutConfirm: {
            code: string;
            skipLink?: boolean;
        };
    };

    export type LoginUpdateProfile = Common & {
        pageId: "login-update-profile.ftl";
        profile: UserProfile;
    };

    export type IdpReviewUserProfile = Common & {
        pageId: "idp-review-user-profile.ftl";
        profile: UserProfile;
    };

    export type UpdateEmail = Common & {
        pageId: "update-email.ftl";
        profile: UserProfile;
    };

    export type SelectAuthenticator = Common & {
        pageId: "select-authenticator.ftl";
        auth: {
            authenticationSelections: SelectAuthenticator.AuthenticationSelection[];
        };
    };

    export namespace SelectAuthenticator {
        export type AuthenticationSelection = {
            authExecId: string;
            displayName:
                | "otp-display-name"
                | "password-display-name"
                | "auth-username-form-display-name"
                | "auth-username-password-form-display-name"
                | "webauthn-display-name"
                | "webauthn-passwordless-display-name";
            helpText:
                | "otp-help-text"
                | "password-help-text"
                | "auth-username-form-help-text"
                | "auth-username-password-form-help-text"
                | "webauthn-help-text"
                | "webauthn-passwordless-help-text";
            iconCssClass?:
                | "kcAuthenticatorDefaultClass"
                | "kcAuthenticatorPasswordClass"
                | "kcAuthenticatorOTPClass"
                | "kcAuthenticatorWebAuthnClass"
                | "kcAuthenticatorWebAuthnPasswordlessClass";
        };
    }

    export type DeleteCredential = Common & {
        pageId: "delete-credential.ftl";
        credentialLabel: string;
    };

    export type Code = Common & {
        pageId: "code.ftl";
        code: {
            success: boolean;
            code?: string;
            error?: string;
        };
    };

    export type DeleteAccountConfirm = Common & {
        pageId: "delete-account-confirm.ftl";
        triggered_from_aia: boolean;
    };

    export type FrontchannelLogout = Common & {
        pageId: "frontchannel-logout.ftl";
        logout: {
            clients: {
                name: string;
                frontChannelLogoutUrl: string;
            }[];
            logoutRedirectUri?: string;
        };
    };

    export type LoginRecoveryAuthnCodeConfig = Common & {
        pageId: "login-recovery-authn-code-config.ftl";
        recoveryAuthnCodesConfigBean: {
            generatedRecoveryAuthnCodesList: string[];
            generatedRecoveryAuthnCodesAsString: string;
            generatedAt: number;
        };
    };

    export type LoginRecoveryAuthnCodeInput = Common & {
        pageId: "login-recovery-authn-code-input.ftl";
        recoveryAuthnCodesInputBean: {
            codeNumber: number;
        };
    };

    export type LoginResetOtp = Common & {
        pageId: "login-reset-otp.ftl";
        configuredOtpCredentials: {
            userOtpCredentials: {
                id: string;
                userLabel: string;
            }[];
            selectedCredentialId: string;
        };
    };

    export type LoginX509Info = Common & {
        pageId: "login-x509-info.ftl";
        x509: {
            formData: {
                subjectDN?: string;
                isUserEnabled?: boolean;
                username?: string;
            };
        };
    };

    export type WebauthnError = Common & {
        pageId: "webauthn-error.ftl";
        isAppInitiatedAction?: boolean;
    };
}

export type UserProfile = {
    attributes: Attribute[];
    attributesByName: Record<string, Attribute>;
    html5DataAnnotations?: Record<string, string>;
};

export type Attribute = {
    name: string;
    displayName?: string;
    required: boolean;
    value?: string;
    values?: string[];
    group?: {
        html5DataAnnotations: Record<string, string>;
        displayHeader?: string;
        name: string;
        displayDescription?: string;
    };
    html5DataAnnotations?: {
        kcNumberFormat?: string;
        kcNumberUnFormat?: string;
    };
    readOnly: boolean;
    validators: Validators;
    annotations: {
        inputType?: string;
        inputTypeSize?: `${number}` | number;
        inputOptionsFromValidation?: string;
        inputOptionLabels?: Record<string, string | undefined>;
        inputOptionLabelsI18nPrefix?: string;
        inputTypeCols?: `${number}` | number;
        inputTypeRows?: `${number}` | number;
        inputTypeMaxlength?: `${number}` | number;
        inputHelperTextBefore?: string;
        inputHelperTextAfter?: string;
        inputTypePlaceholder?: string;
        inputTypePattern?: string;
        inputTypeMinlength?: `${number}` | number;
        inputTypeMax?: string;
        inputTypeMin?: string;
        inputTypeStep?: string;
    };
    multivalued?: boolean;
    autocomplete?:
        | "on"
        | "off"
        | "name"
        | "honorific-prefix"
        | "given-name"
        | "additional-name"
        | "family-name"
        | "honorific-suffix"
        | "nickname"
        | "email"
        | "username"
        | "new-password"
        | "current-password"
        | "one-time-code"
        | "organization-title"
        | "organization"
        | "street-address"
        | "address-line1"
        | "address-line2"
        | "address-line3"
        | "address-level4"
        | "address-level3"
        | "address-level2"
        | "address-level1"
        | "country"
        | "country-name"
        | "postal-code"
        | "cc-name"
        | "cc-given-name"
        | "cc-additional-name"
        | "cc-family-name"
        | "cc-number"
        | "cc-exp"
        | "cc-exp-month"
        | "cc-exp-year"
        | "cc-csc"
        | "cc-type"
        | "transaction-currency"
        | "transaction-amount"
        | "language"
        | "bday"
        | "bday-day"
        | "bday-month"
        | "bday-year"
        | "sex"
        | "tel"
        | "tel-country-code"
        | "tel-national"
        | "tel-area-code"
        | "tel-local"
        | "tel-extension"
        | "impp"
        | "url"
        | "photo";
};

export type Validators = Partial<{
    length: Validators.DoIgnoreEmpty & Validators.Range;
    integer: Validators.DoIgnoreEmpty & Validators.Range;
    email: Validators.DoIgnoreEmpty;
    pattern: Validators.DoIgnoreEmpty & Validators.ErrorMessage & { pattern: string };
    options: Validators.Options;
    multivalued: Validators.DoIgnoreEmpty & Validators.Range;
    // NOTE: Following are the validators for which we don't implement client side validation yet
    // or for which the validation can't be performed on the client side.
    /*
    double: Validators.DoIgnoreEmpty & Validators.Range;
    "up-immutable-attribute": {};
    "up-attribute-required-by-metadata-value": {};
    "up-username-has-value": {};
    "up-duplicate-username": {};
    "up-username-mutation": {};
    "up-email-exists-as-username": {};
    "up-blank-attribute-value": Validators.ErrorMessage & { "fail-on-null": boolean; };
    "up-duplicate-email": {};
    "local-date": Validators.DoIgnoreEmpty;
    "person-name-prohibited-characters": Validators.DoIgnoreEmpty & Validators.ErrorMessage;
    uri: Validators.DoIgnoreEmpty;
    "username-prohibited-characters": Validators.DoIgnoreEmpty & Validators.ErrorMessage;
    */
}>;

export declare namespace Validators {
    export type DoIgnoreEmpty = {
        "ignore.empty.value"?: boolean;
    };

    export type ErrorMessage = {
        "error-message"?: string;
    };

    export type Range = {
        min?: `${number}` | number;
        max?: `${number}` | number;
    };
    export type Options = {
        options: string[];
    };
}

{
    type Got = KcContext["pageId"];
    type Expected = LoginThemePageId;

    type OnlyInGot = Exclude<Got, Expected>;
    type OnlyInExpected = Exclude<Expected, Got>;

    assert<Equals<OnlyInGot, never>>();
    assert<Equals<OnlyInExpected, never>>();
}

export type PasswordPolicies = {
    /** The minimum length of the password */
    length?: number;
    /** The minimum number of digits required in the password */
    digits?: number;
    /** The minimum number of lowercase characters required in the password */
    lowerCase?: number;
    /** The minimum number of uppercase characters required in the password */
    upperCase?: number;
    /** The minimum number of special characters required in the password */
    specialChars?: number;
    /** Whether the password can be the username */
    notUsername?: boolean;
    /** Whether the password can be the email address */
    notEmail?: boolean;
};