constructor()

in lti-components/web/amplify/backend/function/chimeLtiApiAuth/src/utils/LTIMessage.js [56:100]

• 31 lines of code
• 12 McCabe index (conditional complexity)

    constructor(token, platformConfig) {
        this.__token = token;
        this.__platformConfig = platformConfig;

        this.__deploymentId = token[`https://purl.imsglobal.org/spec/lti/claim/deployment_id`] || ``;
        this.__clientId = token[`aud`] || ``;
        this.__resourceId = (token[`https://purl.imsglobal.org/spec/lti/claim/resource_link`] || {}).id || ``;

        const context = token[`https://purl.imsglobal.org/spec/lti/claim/context`] || {};
        // ensure deployment-wide uniqueness of resource id
        const contextId = crypto.createHash(`md5`).update(`${this.__platformConfig.platformId}:${this.__deploymentId}:${context.id}:${this.__resourceId}`).digest(`hex`);

        // according to https://www.imsglobal.org/spec/lti/v1p3/#context-claim
        this.__context = {
            title: ``,
            label: ``,
            type: [],
            ...context,
            id: contextId,
            externalId: context.id
        };

        // ensure platform-wide uniqueness of user id
        const userId = crypto.createHash(`md5`).update(`${this.__platformConfig.platformId}:${token.sub}`).digest(`hex`);

        // according to https://www.imsglobal.org/spec/lti/v1p3/#user-identity-claims
        this.__user = {
            id: userId,
            name: token.name || (`${token.givenName || ``} ${token.family_name || ``}`),
            email: token.email
        };

        // according to http://www.imsglobal.org/spec/lti/v1p3/#launch-presentation-claim
        this.__launchPresentation = Object.assign({
            document_target: ``,
            return_url: ``,
        }, token[`https://purl.imsglobal.org/spec/lti/claim/launch_presentation`] || {});

        // resolving https://www.imsglobal.org/spec/lti/v1p3/#role-vocabularies
        const ltiRoles = token[`https://purl.imsglobal.org/spec/lti/claim/roles`] || [];
        this.__roles = ltiRoleMap.resolveRoles(...ltiRoles).map((role) => role.name);
        this.__highestPrivilegeRole = (ltiRoleMap.resolveToMostPrivilegedRole(...ltiRoles) || {}).name;

        this.__issuer = token[`iss`];
    }