powerapps-common/lib/models/report.js

Common Dataverse JavaScript Functions

const getReportFilter = async (config) => {
    const metadata = await Xrm.Utility.getEntityMetadata(config.table);
    return [
        '<ReportFilter>',
        `<ReportEntity paramname="${config.parameterName}" donotconvert="1">`,
        '<fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false">',
        `<entity name="${metadata.LogicalName}">`,
        '<all-attributes />',
        '<filter type="and">',
        `<condition attribute="${metadata.PrimaryIdAttribute}" operator="eq" value="${config.id}" />`,
        '</filter>',
        '</entity>',
        '</fetch>',
        '</ReportEntity>',
        '</ReportFilter>'
    ].join('');
};
const getReportSession = async (report, config) => {
    const url = `${Xrm.Utility.getGlobalContext().getClientUrl()}/CRMReports/rsviewer/reportviewer.aspx`;
    const filter = await getReportFilter(config);
    const body = [
        `id=%7B${config.reportId}%7D&`,
        `uniquename=${Xrm.Utility.getGlobalContext().organizationSettings.uniqueName}&`,
        `iscustomreport=true&`,
        `reportnameonsrs=&`,
        `reportName=${report.name}&`,
        'isScheduledReport=false&',
        `CRM_Filter=${filter}`
    ].join('');
    const options = {
        method: 'POST',
        body: body,
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded',
            'Accept': '*/*'
        }
    };
    const res = await fetch(url, options);
    const result = await res.text();
    const sessionIndex = result.lastIndexOf('ReportSession=');
    const controlIndex = result.lastIndexOf('ControlID=');
    if (sessionIndex === -1 || controlIndex === -1) {
        throw new Error('Failed to retrieve report session and control id');
    }
    config.sessionId = result.substring(sessionIndex + 14, sessionIndex + 14 + 24);
    config.controlId = result.substring(controlIndex + 10, controlIndex + 10 + 32);
    return config;
};
const convertBlobToBase64 = (blob) => new Promise((resolve, reject) => {
    const reader = new FileReader;
    reader.onerror = reject;
    reader.onload = () => {
        resolve(reader.result);
    };
    reader.readAsDataURL(blob);
});
export const generateReport = async (config) => {
    const report = await Xrm.WebApi.retrieveRecord('report', config.reportId, '?$select=iscustomreport,reportnameonsrs,languagecode,name');
    config = await getReportSession(report, config);
    const url = `${Xrm.Utility.getGlobalContext().getClientUrl()}/Reserved.ReportViewerWebControl.axd`;
    const query = [
        'OpType=Export&',
        `Format=${config.format}&`,
        'ContentDisposition=AlwaysAttachment&',
        'FileName=&',
        `Culture=${report.languagecode}&`,
        'CultureOverrides=False&',
        `UICulture=${report.languagecode}&`,
        'UICultureOverrides=False&',
        `ReportSession=${config.sessionId}&`,
        `ControlID=${config.controlId}`
    ].join('');
    const options = {
        method: 'GET'
    };
    const res = await fetch(`${url}?${query}`, options);
    const blob = await res.blob();
    const reportFile = await convertBlobToBase64(blob);
    return reportFile.split('base64,')[1];
};