import { TimeUnit, WorkflowTriggerEvents, WorkflowTemplates, WorkflowActions, WorkflowMethods, } from "@prisma/client"; import client from "@sendgrid/client"; import sgMail from "@sendgrid/mail"; import dayjs from "@calcom/dayjs"; import prisma from "@calcom/prisma"; import { BookingInfo, timeUnitLowerCase } from "./smsReminderManager"; import customTemplate, { VariablesType } from "./templates/customTemplate"; import emailReminderTemplate from "./templates/emailReminderTemplate"; let sendgridAPIKey, senderEmail: string; if (process.env.SENDGRID_API_KEY) { sendgridAPIKey = process.env.SENDGRID_API_KEY as string; senderEmail = process.env.SENDGRID_EMAIL as string; sgMail.setApiKey(sendgridAPIKey); client.setApiKey(sendgridAPIKey); } export const scheduleEmailReminder = async ( evt: BookingInfo, triggerEvent: WorkflowTriggerEvents, action: WorkflowActions, timeSpan: { time: number | null; timeUnit: TimeUnit | null; }, sendTo: string, emailSubject: string, emailBody: string, workflowStepId: number, template: WorkflowTemplates ) => { const { startTime, endTime } = evt; const uid = evt.uid as string; const currentDate = dayjs(); const timeUnit: timeUnitLowerCase | undefined = timeSpan.timeUnit?.toLocaleLowerCase() as timeUnitLowerCase; let scheduledDate = null; if (triggerEvent === WorkflowTriggerEvents.BEFORE_EVENT) { scheduledDate = timeSpan.time && timeUnit ? dayjs(startTime).subtract(timeSpan.time, timeUnit) : null; } else if (triggerEvent === WorkflowTriggerEvents.AFTER_EVENT) { scheduledDate = timeSpan.time && timeUnit ? dayjs(endTime).add(timeSpan.time, timeUnit) : null; } if (!process.env.SENDGRID_API_KEY || !process.env.SENDGRID_EMAIL) { console.error("Sendgrid credentials are missing from the .env file"); return; } const batchIdResponse = await client.request({ url: "/v3/mail/batch", method: "POST", }); let name = ""; let attendeeName = ""; let timeZone = ""; switch (action) { case WorkflowActions.EMAIL_HOST: name = evt.organizer.name; attendeeName = evt.attendees[0].name; timeZone = evt.organizer.timeZone; break; case WorkflowActions.EMAIL_ATTENDEE: name = evt.attendees[0].name; attendeeName = evt.organizer.name; timeZone = evt.attendees[0].timeZone; break; case WorkflowActions.EMAIL_ADDRESS: name = ""; attendeeName = evt.attendees[0].name; timeZone = evt.organizer.timeZone; } let emailContent = { emailSubject, emailBody: { text: emailBody, html: `${emailBody}`, }, }; switch (template) { case WorkflowTemplates.REMINDER: emailContent = emailReminderTemplate(startTime, endTime, evt.title, timeZone, attendeeName, name); break; case WorkflowTemplates.CUSTOM: const variables: VariablesType = { eventName: evt.title || "", organizerName: evt.organizer.name, attendeeName: evt.attendees[0].name, attendeeEmail: evt.attendees[0].email, eventDate: dayjs(startTime).tz(timeZone), eventTime: dayjs(startTime).tz(timeZone), timeZone: timeZone, location: evt.location, additionalNotes: evt.additionalNotes, customInputs: evt.customInputs, }; const emailSubjectTemplate = await customTemplate( emailSubject, variables, evt.organizer.language.locale ); emailContent.emailSubject = emailSubjectTemplate.text; emailContent.emailBody = await customTemplate(emailBody, variables, evt.organizer.language.locale); break; } if ( triggerEvent === WorkflowTriggerEvents.NEW_EVENT || triggerEvent === WorkflowTriggerEvents.EVENT_CANCELLED || triggerEvent === WorkflowTriggerEvents.RESCHEDULE_EVENT ) { try { await sgMail.send({ to: sendTo, from: senderEmail, subject: emailContent.emailSubject, text: emailContent.emailBody.text, html: emailContent.emailBody.html, batchId: batchIdResponse[1].batch_id, replyTo: evt.organizer.email, }); } catch (error) { console.log("Error sending Email"); } } else if ( (triggerEvent === WorkflowTriggerEvents.BEFORE_EVENT || triggerEvent === WorkflowTriggerEvents.AFTER_EVENT) && scheduledDate ) { // Sendgrid to schedule emails // Can only schedule at least 60 minutes and at most 72 hours in advance if ( currentDate.isBefore(scheduledDate.subtract(1, "hour")) && !scheduledDate.isAfter(currentDate.add(72, "hour")) ) { try { await sgMail.send({ to: sendTo, from: senderEmail, subject: emailContent.emailSubject, text: emailContent.emailBody.text, html: emailContent.emailBody.html, batchId: batchIdResponse[1].batch_id, sendAt: scheduledDate.unix(), replyTo: evt.organizer.email, }); await prisma.workflowReminder.create({ data: { bookingUid: uid, workflowStepId: workflowStepId, method: WorkflowMethods.EMAIL, scheduledDate: scheduledDate.toDate(), scheduled: true, referenceId: batchIdResponse[1].batch_id, }, }); } catch (error) { console.log(`Error scheduling email with error ${error}`); } } else if (scheduledDate.isAfter(currentDate.add(72, "hour"))) { // Write to DB and send to CRON if scheduled reminder date is past 72 hours await prisma.workflowReminder.create({ data: { bookingUid: uid, workflowStepId: workflowStepId, method: WorkflowMethods.EMAIL, scheduledDate: scheduledDate.toDate(), scheduled: false, }, }); } } }; export const deleteScheduledEmailReminder = async (referenceId: string) => { try { await client.request({ url: "/v3/user/scheduled_sends", method: "POST", body: { batch_id: referenceId, status: "cancel", }, }); } catch (error) { console.log(`Error canceling reminder with error ${error}`); } };