@tekdi/sunbird-quml-player
Version:
The QuML player library components are powered by Angular. This player is primarily designed to be used on Sunbird consumption platforms (mobile app, web portal, offline desktop app) to drive reusability and maintainability, hence reducing the redundant d
121 lines • 19.1 kB
JavaScript
import { Injectable } from '@angular/core';
import * as _ from 'lodash-es';
import { DEFAULT_SCORE } from './player-constants';
import * as i0 from "@angular/core";
export class UtilService {
uniqueId(length = 32) {
let result = '';
const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
const charactersLength = characters.length;
for (let i = 0; i < length; i++) {
result += characters.charAt(Math.floor(Math.random() * charactersLength));
}
return result;
}
getTimeSpentText(pdfPlayerStartTime) {
const duration = new Date().getTime() - pdfPlayerStartTime;
const minutes = Math.floor(duration / 60000);
const seconds = Number(((duration % 60000) / 1000).toFixed(0));
return (minutes + ':' + (seconds < 10 ? '0' : '') + seconds);
}
getKeyValue(keys) {
let key = keys.find((k) => {
return k.includes('response');
});
return key;
}
getMultiselectScore(options, responseDeclaration, isShuffleQuestions, outcomeDeclaration) {
let key = this.getKeyValue(Object.keys(responseDeclaration));
const selectedOptionValue = options.map(option => option.value);
let score;
let mapping = responseDeclaration[key]['mapping'];
if (isShuffleQuestions) {
score = DEFAULT_SCORE;
const scoreForEachMapping = _.round(1 / mapping.length, 2);
_.forEach(mapping, (map) => {
map.score = scoreForEachMapping;
});
}
else {
score = _.get(outcomeDeclaration, 'maxScore.defaultValue');
}
let correctValues = responseDeclaration[key].correctResponse.value.map((ele) => Number(ele));
if (_.isEqual(correctValues.sort(), selectedOptionValue.sort())) {
return score;
}
else if (!_.isEqual(correctValues.sort(), selectedOptionValue.sort())) {
let sum = 0;
_.forEach(mapping, (map, index) => {
if (_.includes(selectedOptionValue, map.value)) {
sum += (map?.score ? map.score : 0);
}
});
return sum;
}
}
hasDuplicates(selectedOptions, option) {
let duplicate = selectedOptions.find((o) => { return o.value === option.value; });
return duplicate;
}
getQuestionType(questions, currentIndex) {
let index = currentIndex - 1 === -1 ? 0 : currentIndex - 1;
return questions[index]['qType'];
}
canGo(progressBarClass) {
let attemptedParams = ['correct', 'wrong', 'attempted'];
return attemptedParams.includes(progressBarClass);
}
sumObjectsByKey(...objects) {
return objects.reduce((accumulator, currentValue) => {
for (const key in currentValue) {
/* istanbul ignore else */
if (currentValue.hasOwnProperty(key)) {
accumulator[key] = (accumulator[key] || 0) + currentValue[key];
}
}
return accumulator;
}, {});
}
scrollParentToChild(parent, child) {
const isMobilePortrait = window.matchMedia("(max-width: 480px)").matches;
const parentRect = parent.getBoundingClientRect();
const childRect = child.getBoundingClientRect();
if (isMobilePortrait) {
parent.scrollLeft = childRect.left + parent.scrollLeft - parentRect.left;
}
else {
parent.scrollTop = (childRect.top + parent.scrollTop) - parentRect.top;
}
}
// fetches the element using its tag video and sets the value of the “src” attribute of source element and poster attribute.
updateSourceOfVideoElement(baseUrl, media, identifier) {
const elements = Array.from(document.getElementsByTagName('video'));
_.forEach(elements, (element) => {
const videoId = element.getAttribute('data-asset-variable');
if (!videoId) {
return;
}
const asset = _.filter(media, ['id', videoId]);
const posterSrc = element.getAttribute('poster');
if (!_.isEmpty(asset) && posterSrc) {
element['poster'] = baseUrl ? `${baseUrl}/${identifier}/${posterSrc}` : asset[0].baseUrl + posterSrc;
}
if (!_.isEmpty(asset)) {
const sourceElement = Array.from(element.getElementsByTagName('source'));
_.forEach(sourceElement, (element) => {
const sourceSrc = element.getAttribute('src');
element['src'] = baseUrl ? `${baseUrl}/${identifier}/${sourceSrc}` : asset[0].baseUrl + sourceSrc;
});
}
});
}
/** @nocollapse */ static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: UtilService, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }
/** @nocollapse */ static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: UtilService, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: UtilService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root'
}]
}] });
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{ Injectable } from '@angular/core';\nimport * as _ from 'lodash-es';\nimport { DEFAULT_SCORE } from './player-constants'\n\n@Injectable({\n    providedIn: 'root'\n})\nexport class UtilService {\n\n    public uniqueId(length = 32) {\n        let result = '';\n        const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';\n        const charactersLength = characters.length;\n        for (let i = 0; i < length; i++) {\n            result += characters.charAt(Math.floor(Math.random() * charactersLength));\n        }\n        return result;\n    }\n\n    public getTimeSpentText(pdfPlayerStartTime) {\n        const duration = new Date().getTime() - pdfPlayerStartTime;\n        const minutes = Math.floor(duration / 60000);\n        const seconds = Number(((duration % 60000) / 1000).toFixed(0));\n        return (minutes + ':' + (seconds < 10 ? '0' : '') + seconds);\n    }\n\n    public getKeyValue(keys) {\n        let key = keys.find((k) => {\n            return k.includes('response');\n        })\n        return key;\n    }\n\n    public getMultiselectScore(options, responseDeclaration, isShuffleQuestions, outcomeDeclaration) {\n        let key: any = this.getKeyValue(Object.keys(responseDeclaration));\n        const selectedOptionValue = options.map(option => option.value);\n        let score;\n        let mapping = responseDeclaration[key]['mapping'];\n        if (isShuffleQuestions) {\n            score = DEFAULT_SCORE;\n            const scoreForEachMapping = _.round(1/mapping.length, 2);\n            _.forEach(mapping, (map) => {\n                map.score = scoreForEachMapping;\n            })\n        } else {\n            score = _.get(outcomeDeclaration, 'maxScore.defaultValue');\n        }\n        let correctValues = responseDeclaration[key].correctResponse.value.map((ele) => Number(ele));\n        if (_.isEqual(correctValues.sort(), selectedOptionValue.sort())) {                                               \n            return score;\n        } else if (!_.isEqual(correctValues.sort(), selectedOptionValue.sort())) {\n            let sum = 0;\n            _.forEach(mapping, (map, index) => {\n                if(_.includes(selectedOptionValue, map.value)) {\n                    sum += (map?.score ? map.score : 0);\n                }\n            });\n            return sum;\n        }\n    }\n\n    hasDuplicates(selectedOptions, option) {\n        let duplicate = selectedOptions.find((o) => { return o.value === option.value });\n        return duplicate;\n    }\n\n    getQuestionType(questions, currentIndex) {\n        let index = currentIndex - 1 === -1 ? 0 : currentIndex - 1;\n        return questions[index]['qType'];\n\n    }\n\n    canGo(progressBarClass) {\n        let attemptedParams = ['correct', 'wrong', 'attempted'];\n        return attemptedParams.includes(progressBarClass);\n    }\n\n    sumObjectsByKey(...objects) {\n        return objects.reduce((accumulator, currentValue) => {\n            for (const key in currentValue) {\n                /* istanbul ignore else */\n                if (currentValue.hasOwnProperty(key)) {\n                    accumulator[key] = (accumulator[key] || 0) + currentValue[key];\n                }\n            }\n            return accumulator;\n        }, {});\n    }\n\n    scrollParentToChild(parent: HTMLElement, child: HTMLElement) {\n        const isMobilePortrait = window.matchMedia(\"(max-width: 480px)\").matches;\n        const parentRect = parent.getBoundingClientRect();\n        const childRect = child.getBoundingClientRect();\n\n        if (isMobilePortrait) {\n            parent.scrollLeft = childRect.left + parent.scrollLeft - parentRect.left;\n        } else {\n            parent.scrollTop = (childRect.top + parent.scrollTop) - parentRect.top;\n        }\n    }\n\n    // fetches the element using its tag video and sets the value of the “src” attribute of source element and poster attribute.\n    updateSourceOfVideoElement(baseUrl: string, media: any[], identifier: string)  {\n        const elements = Array.from(document.getElementsByTagName('video') as HTMLCollectionOf<Element>);\n        _.forEach(elements, (element: HTMLElement) => {\n            const videoId = element.getAttribute('data-asset-variable');\n            if(!videoId) { return; }\n            const asset = _.filter(media, ['id', videoId]);\n            const posterSrc = element.getAttribute('poster');\n            \n            if(!_.isEmpty(asset) && posterSrc) {\n                element['poster'] = baseUrl ? `${baseUrl}/${identifier}/${posterSrc}` : asset[0].baseUrl + posterSrc;\n            }  \n\n            if(!_.isEmpty(asset)) {\n                const sourceElement = Array.from(element.getElementsByTagName('source') as HTMLCollectionOf<Element>);\n                _.forEach(sourceElement, (element: HTMLElement) => {\n                    const sourceSrc = element.getAttribute('src');\n                    element['src'] = baseUrl ? `${baseUrl}/${identifier}/${sourceSrc}` : asset[0].baseUrl + sourceSrc;\n                });\n            }\n        });\n    } \n\n}\n"]}