/// <reference path="../../packages.ts" />
/// <reference path="../../api/modalities/callbackModality.ts" />
/// <reference path="../../telemetry/awa/eventWriter.ts" />
/// <reference path="../../telemetry/telemetry.ts" />
/// <reference path="../../utils/modality.ts" />
/// <reference path="../constants.ts" />
/// <reference path="config.ts" /> 
/// <reference path="surveyOfferBuilder.ts" /> 
/// <reference path="surveyResponseBuilder.ts" /> 
/// <reference path="surveyRequestConfig.ts" />
/// <reference path="surveyModel.ts" />
/// <reference path="surveyConfig.ts" />
/// <reference path="survey.ts" /> 

/**
 * @module UI
 * @submodule UI Survey
 * @namespace ui
 */

/**
 * Survey UI Module
 * @class survey
 * @static
 */
namespace internal.ui.survey {

    const LOAD_TIMEOUT_MS = 15000; // Use this to overwrite the default loaded timeout  
    const REPORT_HEIGHT_CHANGE = true; // set to true to report height change events

    const DEFAULT_SURVEY_URL = "https://survey.support.services.microsoft.com/viewsurvey.html";
    const DEFAULT_VIEW_MODE = "Wizard";
    const DEFAULT_SURVEY_PLATFORM_ENVIRONMENT = "Prod";

    // Parameters
    const SURVEY_SURVEY_ID = "surveyId";
    const SURVEY_RESPONSE_ID = "responseId";
    const SURVEY_LOCALE_ID = "locale";
    const SURVEY_FLIGHT_ID = "flightId";
    const SURVEY_PREVIEW = "preview";
    const SURVEY_VIEW_MODE = "viewMode";
    const SURVEY_PLATFORM_ENVIRONMENT = "platformEnvironment";
    const SURVEY_CONTEXT = "context";

    const DEFAULT_XFRAME_PROXY_PATH = "xframeproxy.html";

    /**
     * Factory method for creating a survey instance
     * @method createSurvey
     * @param {ui.survey.SurveyConfig} config A {{#crossLink "ui.survey.SurveyConfig"}}{{/crossLink}} class to configure this instance and all subsequent survey calls
     * @return {ui.survey.Survey} A {{#crossLink "ui.survey.Survey"}}{{/crossLink}} instance
     * @example
     *     var surveyConfig = {
     *       "surveyId": "integrationsurvey",
     *       "locale": "en-us"
     *     };
     *  
     *     var survey = window.MsSupportSdk.ui.survey.createSurvey(surveyConfig);
     */
    export function createSurvey(config: SurveyConfig): Survey {
        return new Survey(config);
    }

    export class Component extends UIComponent {

        surveyConfig: SurveyConfig;
        responseId: string;

        constructor(surveyConfig: SurveyConfig, config: Config, responseId: string) {
            if (!surveyConfig || !config || !(surveyConfig.surveyId && surveyConfig.locale)) {
                throw new Error("You must pass a product Id, Survey Id and locale when creating a survey component.");
            }

            super(config, LOAD_TIMEOUT_MS, REPORT_HEIGHT_CHANGE);
            this.surveyConfig = surveyConfig;
            this.responseId = responseId;
        }

        public getComponentUrl(): string {
            return getSurveyUrl(this.surveyConfig, <Config>this.config, this.responseId);
        }

        public getComponentSdk(): ComponentSDK {
            return {};
        }

        // Override this method in the UI component to use a different xframe proxy url if needed
        public getXframeProxyUrl(): string {
            return `${utils.getOriginFromUrl(this.getComponentUrl())}/${DEFAULT_XFRAME_PROXY_PATH}/`;
        }
    }

    function getSurveyUrl(surveyConfig: SurveyConfig, config: Config, responseId: string): string {
        let values: any = {};

        if (surveyConfig.surveyId && utils.isString(surveyConfig.surveyId)) {
            values[SURVEY_SURVEY_ID] = surveyConfig.surveyId;
        }

        if (responseId && utils.isString(responseId)) {
            values[SURVEY_RESPONSE_ID] = responseId;
        }

        if (surveyConfig.locale && utils.isString(surveyConfig.locale)) {
            values[SURVEY_LOCALE_ID] = surveyConfig.locale;
        }

        if (surveyConfig.flightId && utils.isString(surveyConfig.flightId)) {
            values[SURVEY_FLIGHT_ID] = surveyConfig.flightId;
        }

        if (config.preview === true) {
            values[SURVEY_PREVIEW] = true;
        }

        // Default to wizard view
        let viewModeValue = DEFAULT_VIEW_MODE;
        if (config.viewMode && utils.isString(config.viewMode)) {
            viewModeValue = config.viewMode;
        }

        values[SURVEY_VIEW_MODE] = viewModeValue;

        let surveyUrl = DEFAULT_SURVEY_URL; // Default to production
        if (config.environment && utils.isString(config.environment)) {
            surveyUrl = config.environment;
        }

        values[SURVEY_PLATFORM_ENVIRONMENT] = DEFAULT_SURVEY_PLATFORM_ENVIRONMENT; // Default to production
        if (config.surveyPlatformEnvironment && utils.isString(config.surveyPlatformEnvironment)) {
            values[SURVEY_PLATFORM_ENVIRONMENT] = config.surveyPlatformEnvironment;
        }

        if (surveyConfig.partnerContext) {
            values[SURVEY_CONTEXT] = JSON.stringify(surveyConfig.partnerContext); // Convert to JSON
        }

        return utils.appendParams(surveyUrl, values);
    }
}