import SendgridClient from '@sendgrid/client'
import * as SendgridHelpers from '@sendgrid/helpers'
import SendgridMail from '@sendgrid/mail'
import moment from 'moment'
import fetch from 'node-fetch'
import Constants from '../../constants/general'
import GeneralUtils from '../general'
import { logger } from '../logger'
import { TemplateNameTypes, SendInputType, TemplateDataType } from './types'

SendgridMail.setApiKey(process.env.SENDGRID_API_KEY)
SendgridMail.setSubstitutionWrappers('{{{', '}}}')
SendgridClient.setApiKey(process.env.SENDGRID_API_KEY)

// CAREFUL: The name of the template must be the same as in Sendgrid and our email service.
// That's why at the end we do a replace all _ with - and put to lower case
const getSendGridTemplateDataForTemplateName = (template: TemplateNameTypes): TemplateDataType => {
  if (!template) {
    return null
  }

  let sendGridTemplateId = ''

  switch (template) {
    case 'RESIDENT_WELCOME':
      sendGridTemplateId = 'd-136b71acf7054b2bb39e24ece7a6cab2'
      break
    case 'RESIDENT_WELCOME_FR':
      sendGridTemplateId = 'd-0612d8c2805a4a58973f1b7470bcd6e0'
      break
    case 'RESIDENT_FIRST_INVITE':
      sendGridTemplateId = 'd-ae34e8d5dc7a4dd0911b90fbd9f14ec1'
      break
    case 'RESIDENT_FIRST_INVITE_FR':
      sendGridTemplateId = 'd-453c1b9643324bd8a155d8db9a4e3e58'
      break
    case 'RESIDENT_SECOND_INVITE':
      sendGridTemplateId = 'd-ada26ab36b4344ff872c35698ecc87ce'
      break
    case 'RESIDENT_SECOND_INVITE_FR':
      sendGridTemplateId = 'd-ada26ab36b4344ff872c35698ecc87ce'
      break
    case 'RESIDENT_NEW_POST':
      sendGridTemplateId = 'd-3e477460982e419aa3fc9afa53f173c9'
      break
    case 'RESIDENT_NEW_POST_FR':
      sendGridTemplateId = 'd-1250fe02c7294b3d8b7fac09ff20f7ae'
      break
    case 'RESET_PASSWORD':
      sendGridTemplateId = 'd-85139475f7bb47f8a36c955312998fe5'
      break
    case 'RESET_PASSWORD_FR':
      sendGridTemplateId = 'd-779d629bcb104156beb58461cacd265f'
      break
    case 'ORDER_CONFIRMATION':
      sendGridTemplateId = 'd-2312c05f2c3d45ae8bfb1541945dc2cc'
      break
    case 'PARTNER_INVOICE':
      sendGridTemplateId = 'd-f6a68e8443ca4e138da079d369c3a33c'
      break
    case 'NEW_MESSAGE_TO_RESIDENT':
      sendGridTemplateId = 'd-68157f0e760347ed9315a3b27ce7e6b7'
      break
    case 'NEW_MESSAGE_TO_RESIDENT_FR':
      sendGridTemplateId = 'd-8fa41b4f467a44569f04dcfa3334cf8d'
      break
    case 'NEW_MESSAGE_TO_MANAGER':
      sendGridTemplateId = 'd-aeae5153836a49a6943c274afcf3c5c1'
      break
    case 'RESIDENT_GENERAL_NOTIFICATION_FR':
      sendGridTemplateId = 'd-c32fb9b53f3948f28cb1e062ae709a25'
      break
    case 'MANAGER_GENERAL_NOTIFICATION':
      sendGridTemplateId = 'd-764386bd5aad44c6ba76e9e5fafb969d'
      break
    case 'NEW_PROXY_FROM_MANAGER_FR':
      sendGridTemplateId = 'd-68753f7abfc740ae8580029282e74966'
      break
    case 'NEW_PROXY_FROM_MANAGER':
      sendGridTemplateId = 'd-22af4df2d9624299a1fa4235a72847dd'
      break
    case 'NEW_PROXY_COMPLETED_TO_RESIDENT':
      sendGridTemplateId = 'd-5af296b90ec5474ea8c3c34cc4eb8e1d'
      break
    case 'NEW_PROXY_COMPLETED_TO_RESIDENT_FR':
      sendGridTemplateId = 'd-5f65f6c829c64389ab56cde7e009cfd5'
      break
    case 'NEW_PROXY_COMPLETED_TO_MANAGER':
      sendGridTemplateId = 'd-11592d03f73644faa8377d5b8cf492b5'
      break
    case 'PRIVATE_CONVERSATION_MENTIONED':
      sendGridTemplateId = 'd-96291ec180b843e7888ceac7d9d3944f'
      break
    case 'PROVIDER_ORDER_REQUEST_SUMMARY':
      sendGridTemplateId = 'd-ecab6982b2a043c1b903ce41a74e775b'
      break
    case 'COVID19_NEW_SERVICES':
      sendGridTemplateId = 'd-8e3028ae871c469f9db4f8e2e7d17dc8'
      break
    case 'COVID19_NEW_SERVICES_FR':
      sendGridTemplateId = 'd-010b6061bb584e8b9253bed21e1e2e04'
      break
    case 'RESIDENT_GENERAL_NOTIFICATION':
    default:
      sendGridTemplateId = 'd-036928b286e2463298d71b66404a0b29'
      break
  }

  return {
    id: sendGridTemplateId,
    name: template.toLowerCase().replace(/_/g, '-'),
  }
}

export const send = async ({
  to,
  from = {
    email: Constants.EMAIL_COMMUNICATION_WALTER_FROM_EMAIL,
    name: Constants.EMAIL_COMMUNICATION_WALTER_FROM_NAME,
  },
  text,
  html,
  subject,
  template,
  attachments,
  customVariables,
  customArgs,
}: SendInputType) => {
  const sendGridTemplateData: TemplateDataType = getSendGridTemplateDataForTemplateName(template)

  const mail = new SendgridHelpers.classes.Mail()

  // FROM
  mail.setFrom(from)

  // SUBJECT
  mail.setSubject(subject)

  // CUSTOM ARGS
  mail.setCustomArgs(customArgs)

  // CONTENT
  if (html) {
    mail.addHtmlContent(html)
  } else if (text) {
    mail.addTextContent(text)
  } else {
    mail.setTemplateId(sendGridTemplateData.id)
    mail.setPersonalizations([
      {
        to,
        customArgs: {
          emailTemplate: template,
        },
        dynamicTemplateData: {
          // Used in email service to view email online
          paramsEncodedAndStringify: GeneralUtils.serializeObjForQueryString(
            customVariables || {},
            ''
          ),
          templateName: sendGridTemplateData.name,
          subject, // In email service, at some place we use it as variable also,
          ...customVariables,
        },
      },
    ])
  }

  // ATTACHMENTS
  if (attachments?.length > 0) {
    const attachmentsWithData = await Promise.all(
      attachments.map((attachment) =>
        fetch(attachment.url)
          .then((res) => res.buffer())
          .then((data) => ({
            data,
            ...attachment,
          }))
      )
    )
    mail.setAttachments(
      attachmentsWithData.map((attachment) => ({
        filename:
          GeneralUtils.removeAccents(attachment.filename) || `attachment-${moment().unix()}`,
        content: attachment.data.toString('base64'),
        type: attachment.type,
        disposition: 'attachment',
      }))
    )
  }

  // LOG FOR DEV
  if (process.env.NODE_ENV === 'development') {
    if (process.env.SEND_EMAIL !== 'true') {
      logger.info("✉️❌ Don't send because SEND_EMAIL is at false")
      return Promise.resolve()
    }
  }

  // @ts-ignore for now...
  return SendgridMail.send(mail.toJSON())

  // TODO: To revise... not working well and maybe useless
  // Need to do this if we couldn't send because of x, y, z reason...
  // if (error?.response?.body?.errors) {
  //   logger.error(error.response.body.errors)
  //   // User can't receive email
  //   if (
  //     error.response.body.errors.some(
  //       error => error.message === 'Does not contain a valid address.'
  //     )
  //   ) {
  //     UserController.querySingleUser({ emails: emailTos })
  //       .then(
  //         user =>
  //           user &&
  //           prisma.user.update({
  //             where: { id: user.id },
  //             data: {
  //               cantDeliverEmail: true,
  //               cantDeliverEmailReason: 'INVALID_EMAIL',
  //               cantDeliverEmailFullReason: `Invalid email`
  //             }
  //           })
  //       )
  //       .catch(logger.error)
  //   }
  // }
}