/**
 * Copyright (c) 2020, WSO2 LLC. (https://www.wso2.com). All Rights Reserved.
 *
 * This software is the property of WSO2 LLC. and its suppliers, if any.
 * Dissemination of any information or reproduction of any material contained
 * herein in any form is strictly forbidden, unless permitted by WSO2 expressly.
 * You may not alter or remove any copyright or other notice from copies of this content.
 */

import { IdentifiableComponentInterface } from "@wso2is/core/models";
import { EncodeDecodeUtils } from "@wso2is/core/utils";
import { Code, Hint, Link, Message, useDocumentation } from "@wso2is/react-components";
import isEmpty from "lodash-es/isEmpty";
import React, {
    Fragment,
    FunctionComponent,
    ReactElement,
    ReactNode,
    SyntheticEvent,
    useEffect,
    useState
} from "react";
import { Trans, useTranslation } from "react-i18next";
import { useSelector } from "react-redux";
import { Divider, DropdownItemProps, DropdownProps, Form, Icon, Table } from "semantic-ui-react";
import { IntegrateStepGeneratorFactory } from "./integrate-step-generator-factory";
import {
    ApplicationInterface,
    ApplicationTemplateInterface
} from "../../../../../features/applications/models";
import { AppState, ConfigReducerStateInterface } from "../../../../../features/core";
import { SDKInitConfig } from "../../../shared";
import { AddUserStepContent } from "../../../shared/components";
import { SupportedSPATechnologyTypes } from "../models";

/**
 * Interface for the SDK Integration component.
 */
interface IntegrateSDKsPropsInterface extends IdentifiableComponentInterface {
    application: ApplicationInterface;
    technology: SupportedSPATechnologyTypes;
    template: ApplicationTemplateInterface;
    inboundProtocolConfig: any;
}

/**
 * Index of the protocol tab.
 */
const PROTOCOL_TAB_INDEX: number = 2;

/**
 * The set of scopes requested to have a smooth UX. If `profile` is not requested, the `username` etc.
 * claims will not return with the ID Token.
 */
const DEFAULT_REQUESTED_SCOPES: string[] = [ "openid", "profile" ];

/**
 * Integrate SDKs to Single Page Applications.
 *
 * returns IntegrateSDKs component.
 */
export const IntegrateSDKs: FunctionComponent<IntegrateSDKsPropsInterface> = (
    props: IntegrateSDKsPropsInterface
): ReactElement => {

    const {
        inboundProtocolConfig,
        technology,
        [ "data-componentid" ]: componentId
    } = props;

    const { t } = useTranslation();

    const { getLink } = useDocumentation();

    const config: ConfigReducerStateInterface = useSelector((state: AppState) => state.config);

    const [ SDKInitConfig, setSDKInitConfig ] = useState<SDKInitConfig>(undefined);
    const [ configuredCallbacks, setConfiguredCallbacks ] = useState<DropdownItemProps[]>([]);
    const [ selectedLoginCallBack, setSelectedLoginCallBack ] = useState<string>("");
    const [ selectedLogoutCallBack, setSelectedLogoutCallBack ] = useState<string>("");

    /**
     * Runs when `inboundProtocolConfig` changes and sets the callback URLs.
     */
    useEffect(() => {

        if (!inboundProtocolConfig?.oidc?.callbackURLs
            || !Array.isArray(inboundProtocolConfig.oidc.callbackURLs)
            || inboundProtocolConfig.oidc.callbackURLs.length < 1) {

            return;
        }

        const callbacks: string[] = EncodeDecodeUtils.decodeURLRegex(inboundProtocolConfig.oidc.callbackURLs[ 0 ]);

        if (callbacks && Array.isArray(callbacks) && callbacks.length > 1) {
            callbacks.forEach((url: string) => {
                setConfiguredCallbacks((prevItems: DropdownItemProps[]) => [
                    ...prevItems,
                    {
                        key: url,
                        text: url,
                        value: url
                    }
                ]);
            });

            setSelectedLoginCallBack(callbacks[0]);
            setSelectedLogoutCallBack(callbacks[0]);
        }
    }, [ inboundProtocolConfig ]);

    /**
     * Runs when `inboundProtocolConfig` changes and sets the SDK init configs.
     */
    useEffect(() => {
        if (!inboundProtocolConfig?.oidc) {
            return;
        }

        const configs: SDKInitConfig = {
            baseUrl: config.deployment.customServerHost,
            clientID: inboundProtocolConfig.oidc.clientId,
            scope: DEFAULT_REQUESTED_SCOPES,
            signInRedirectURL: (configuredCallbacks.length > 1)
                ? selectedLoginCallBack
                : inboundProtocolConfig.oidc.callbackURLs[ 0 ],
            signOutRedirectURL: (configuredCallbacks.length > 1)
                ? selectedLogoutCallBack
                : inboundProtocolConfig.oidc.callbackURLs[ 0 ]
        };

        setSDKInitConfig(configs);
    }, [ inboundProtocolConfig, configuredCallbacks, selectedLoginCallBack, selectedLogoutCallBack ]);

    const renderConfigurationOptions = (heading: ReactNode): ReactElement => {

        if (isEmpty(SDKInitConfig)) {
            return null;
        }

        return  (
            <Message
                header={ heading }
                content={ (
                    <div>
                        <Table basic="very" celled collapsing>
                            <Table.Body>
                                <Table.Row>
                                    <Table.Cell>
                                        <Code>clientID</Code>
                                        <Hint popup>
                                            {
                                                t("extensions:develop.applications.quickstart.spa.integrate" +
                                                    ".common.sdkConfigs.clientId.hint")
                                            }
                                        </Hint>
                                    </Table.Cell>
                                    <Table.Cell>
                                        <Code withBackground={ false }>
                                            { SDKInitConfig.clientID }
                                        </Code>
                                    </Table.Cell>
                                </Table.Row>
                                <Table.Row>
                                    <Table.Cell>
                                        <Code>baseUrl</Code>
                                        <Hint popup>
                                            {
                                                t("extensions:develop.applications.quickstart.spa.integrate" +
                                                    ".common.sdkConfigs.serverOrigin.hint")
                                            }
                                        </Hint>
                                    </Table.Cell>
                                    <Table.Cell>
                                        <Code withBackground={ false }>
                                            { SDKInitConfig.baseUrl }
                                        </Code>
                                    </Table.Cell>
                                </Table.Row>
                                <Table.Row>
                                    <Table.Cell>
                                        <Code>signInRedirectURL</Code>
                                        <Hint
                                            popup
                                            popupOptions={ {
                                                wide: true
                                            } }
                                            warning={ configuredCallbacks.length > 1 }
                                        >
                                            {
                                                (configuredCallbacks.length > 1) && (
                                                    <>
                                                        <Message attached="top" warning>
                                                            <Icon name="warning sign" />
                                                            {
                                                                t("extensions:develop.applications.quickstart" +
                                                                    ".spa.integrate.common.sdkConfigs" +
                                                                    ".signInRedirectURL.hint.multipleWarning")
                                                            }
                                                        </Message>
                                                        <Divider hidden />
                                                    </>
                                                )
                                            }

                                            <Trans
                                                i18nKey={
                                                    "extensions:develop.applications.quickstart.spa.integrate.common" +
                                                    ".sdkConfigs.signInRedirectURL.hint.content"
                                                }
                                            >
                                                The URL that determines where the authorization 
                                                code is sent to upon user authentication.

                                                <Divider hidden />

                                                If your application is hosted on a different URL, go to the <Link
                                                    link={ `#tab=${ PROTOCOL_TAB_INDEX }` }
                                                    target="_self"
                                                    external={ false }
                                                >
                                                protocol
                                                </Link> tab and configure the correct URL from the <Code>
                                                Authorized redirect URLs</Code> field.
                                            </Trans>
                                        </Hint>
                                    </Table.Cell>
                                    <Table.Cell>
                                        {
                                            (configuredCallbacks.length > 1)
                                                ? (
                                                    <>
                                                        <Form.Select
                                                            fluid
                                                            onChange={
                                                                (
                                                                    value: SyntheticEvent<HTMLElement>,
                                                                    data: DropdownProps
                                                                ) => {
                                                                    setSelectedLoginCallBack(data.value as string);
                                                                }
                                                            }
                                                            defaultValue={ configuredCallbacks[0].value }
                                                            options={ configuredCallbacks }
                                                        />
                                                    </>
                                                )
                                                : (
                                                    <Code withBackground={ false }>
                                                        { SDKInitConfig.signInRedirectURL }
                                                    </Code>
                                                )
                                        }
                                    </Table.Cell>
                                </Table.Row>
                                <Table.Row>
                                    <Table.Cell>
                                        <Code>signOutRedirectURL</Code>
                                        <Hint
                                            popup
                                            popupOptions={ {
                                                wide: true
                                            } }
                                            warning={ configuredCallbacks.length > 1 }
                                        >
                                            {
                                                (configuredCallbacks.length > 1) && (
                                                    <>
                                                        <Message attached="top" warning>
                                                            <Icon name="warning sign" />
                                                            {
                                                                t("extensions:develop.applications.quickstart" +
                                                                    ".spa.integrate.common.sdkConfigs" +
                                                                    ".signOutRedirectURL.hint.multipleWarning")
                                                            }
                                                        </Message>
                                                        <Divider hidden />
                                                    </>
                                                )
                                            }

                                            <Trans
                                                i18nKey={
                                                    "extensions:develop.applications.quickstart.spa.integrate.common" +
                                                    ".sdkConfigs.signOutRedirectURL.hint.content"
                                                }
                                            >
                                                The URL that determines where the user is redirected to upon logout.

                                                <Divider hidden />

                                                If your application is hosted on a different URL, go to the <Link
                                                    link={ `#tab=${ PROTOCOL_TAB_INDEX }` }
                                                    target="_self"
                                                    external={ false }
                                                >
                                                    protocol
                                                </Link> tab and configure the correct URL from the <Code>
                                                Authorized redirect URLs</Code> field.
                                            </Trans>
                                        </Hint>
                                    </Table.Cell>
                                    <Table.Cell>
                                        {
                                            (configuredCallbacks.length > 1)
                                                ? (
                                                    <Form.Select
                                                        fluid
                                                        onChange={
                                                            (
                                                                value: SyntheticEvent<HTMLElement>,
                                                                data: DropdownProps
                                                            ) => {
                                                                setSelectedLogoutCallBack(data.value as string);
                                                            }
                                                        }
                                                        defaultValue={ configuredCallbacks[0].value }
                                                        options={ configuredCallbacks }
                                                        placeholder="Sign-out Redirect URL"
                                                    />
                                                )
                                                : (
                                                    <Code withBackground={ false }>
                                                        { SDKInitConfig.signOutRedirectURL }
                                                    </Code>
                                                )
                                        }
                                    </Table.Cell>
                                </Table.Row>
                                <Table.Row>
                                    <Table.Cell>
                                        <Code>scope</Code>
                                        <Hint popup>
                                            <Trans
                                                i18nKey={
                                                    "extensions:develop.applications.quickstart" +
                                                    ".spa.integrate.common.sdkConfigs.scope.hint"
                                                }
                                            >
                                                These are the set of scopes that are used to request
                                                user attributes.
                                                <Divider hidden />
                                                If you need to to add more scopes other than <Code>openid</Code> &
                                                <Code>profile</Code>, you can append them to the array.
                                                <Divider hidden />
                                                Read through our <Link 
                                                    link={
                                                        getLink("develop.applications.editApplication.oidcApplication" +
                                                        ".quickStart.applicationScopes.learnMore")
                                                    }
                                                >documentation</Link> to learn  more.
                                            </Trans>
                                        </Hint>
                                    </Table.Cell>
                                    <Table.Cell>
                                        <Code withBackground={ false }>
                                            {
                                                `[${
                                                    SDKInitConfig?.scope?.map((item: string) => {
                                                        return `"${ item }"`;
                                                    })
                                                }]`
                                            }
                                        </Code>
                                    </Table.Cell>
                                </Table.Row>

                            </Table.Body>
                        </Table>
                    </div>
                ) }
            />
        );
    };

    return (
        <Fragment data-componentid={ componentId }>
            <IntegrateStepGeneratorFactory
                technology={ technology }
                configurationOptions={ (heading: ReactNode) => renderConfigurationOptions(heading) }
                productName={ config.ui.productName }
                sdkConfig={ {
                    baseUrl: SDKInitConfig?.baseUrl,
                    clientID: SDKInitConfig?.clientID,
                    scope: SDKInitConfig?.scope,
                    signInRedirectURL: (configuredCallbacks.length > 1)
                        ? selectedLoginCallBack
                        : SDKInitConfig?.signInRedirectURL,
                    signOutRedirectURL: (configuredCallbacks.length > 1)
                        ? selectedLogoutCallBack
                        : SDKInitConfig?.signOutRedirectURL
                } }
            />
            <Divider hidden className="x2"/>
            <div className="mt-3 mb-6">
                <Message
                    type="info"
                    header={ t("extensions:develop.applications.quickstart.spa.common.addTestUser.title") }
                    content={ <AddUserStepContent/> }
                />
            </div>
        </Fragment>
    );
};

/**
 * Default props for the component
 */
IntegrateSDKs.defaultProps = {
    "data-componentid": "integrate-sdks"
};
