215 lines
8.8 KiB
Go
215 lines
8.8 KiB
Go
// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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// PERFORMANCE OF THIS SOFTWARE.
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package emails
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import (
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"bytes"
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"embed"
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"fmt"
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htmltemplate "html/template"
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"math"
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texttemplate "text/template"
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"time"
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)
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//go:embed dist
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var Templates embed.FS
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const (
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logoURLPath = "/logos/probo.png"
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subjectConfirmEmail = "Confirm your email address"
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subjectPasswordReset = "Reset your password"
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subjectInvitation = "Invitation to join %s on Probo"
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subjectDocumentSigning = "Action Required – Please review and sign %s compliance documents"
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subjectDocumentExport = "Your document export is ready"
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subjectFrameworkExport = "Your framework export is ready"
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subjectTrustCenterAccess = "Trust Center Access Invitation - %s"
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subjectTrustCenterDocumentAccessRejected = "Trust Center Document Access Rejected - %s"
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)
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var (
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confirmEmailHTMLTemplate = htmltemplate.Must(htmltemplate.ParseFS(Templates, "dist/confirm-email.html.tmpl"))
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confirmEmailTextTemplate = texttemplate.Must(texttemplate.ParseFS(Templates, "dist/confirm-email.txt.tmpl"))
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passwordResetHTMLTemplate = htmltemplate.Must(htmltemplate.ParseFS(Templates, "dist/password-reset.html.tmpl"))
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passwordResetTextTemplate = texttemplate.Must(texttemplate.ParseFS(Templates, "dist/password-reset.txt.tmpl"))
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invitationHTMLTemplate = htmltemplate.Must(htmltemplate.ParseFS(Templates, "dist/invitation.html.tmpl"))
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invitationTextTemplate = texttemplate.Must(texttemplate.ParseFS(Templates, "dist/invitation.txt.tmpl"))
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documentSigningHTMLTemplate = htmltemplate.Must(htmltemplate.ParseFS(Templates, "dist/document-signing.html.tmpl"))
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documentSigningTextTemplate = texttemplate.Must(texttemplate.ParseFS(Templates, "dist/document-signing.txt.tmpl"))
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documentExportHTMLTemplate = htmltemplate.Must(htmltemplate.ParseFS(Templates, "dist/document-export.html.tmpl"))
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documentExportTextTemplate = texttemplate.Must(texttemplate.ParseFS(Templates, "dist/document-export.txt.tmpl"))
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frameworkExportHTMLTemplate = htmltemplate.Must(htmltemplate.ParseFS(Templates, "dist/framework-export.html.tmpl"))
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frameworkExportTextTemplate = texttemplate.Must(texttemplate.ParseFS(Templates, "dist/framework-export.txt.tmpl"))
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trustCenterAccessHTMLTemplate = htmltemplate.Must(htmltemplate.ParseFS(Templates, "dist/trust-center-access.html.tmpl"))
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trustCenterAccessTextTemplate = texttemplate.Must(texttemplate.ParseFS(Templates, "dist/trust-center-access.txt.tmpl"))
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trustCenterDocumentAccessRejectedHTMLTemplate = htmltemplate.Must(htmltemplate.ParseFS(Templates, "dist/trust-center-document-access-rejected.html.tmpl"))
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trustCenterDocumentAccessRejectedTextTemplate = texttemplate.Must(texttemplate.ParseFS(Templates, "dist/trust-center-document-access-rejected.txt.tmpl"))
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)
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func RenderConfirmEmail(baseURL, fullName, confirmationUrl string) (subject string, textBody string, htmlBody *string, err error) {
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data := struct {
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FullName string
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ConfirmationUrl string
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LogoURL string
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}{
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FullName: fullName,
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ConfirmationUrl: confirmationUrl,
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LogoURL: baseURL + logoURLPath,
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}
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textBody, htmlBody, err = renderEmail(confirmEmailTextTemplate, confirmEmailHTMLTemplate, data)
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return subjectConfirmEmail, textBody, htmlBody, err
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}
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func RenderPasswordReset(baseURL, fullName, resetUrl string) (subject string, textBody string, htmlBody *string, err error) {
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data := struct {
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FullName string
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ResetUrl string
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LogoURL string
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}{
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FullName: fullName,
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ResetUrl: resetUrl,
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LogoURL: baseURL + logoURLPath,
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}
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textBody, htmlBody, err = renderEmail(passwordResetTextTemplate, passwordResetHTMLTemplate, data)
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return subjectPasswordReset, textBody, htmlBody, err
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}
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func RenderInvitation(baseURL, fullName, organizationName, invitationUrl string) (subject string, textBody string, htmlBody *string, err error) {
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data := struct {
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FullName string
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OrganizationName string
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InvitationUrl string
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LogoURL string
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}{
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FullName: fullName,
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OrganizationName: organizationName,
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InvitationUrl: invitationUrl,
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LogoURL: baseURL + logoURLPath,
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}
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textBody, htmlBody, err = renderEmail(invitationTextTemplate, invitationHTMLTemplate, data)
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return fmt.Sprintf(subjectInvitation, organizationName), textBody, htmlBody, err
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}
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func RenderDocumentSigning(baseURL, fullName, organizationName, signingUrl string) (subject string, textBody string, htmlBody *string, err error) {
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data := struct {
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FullName string
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OrganizationName string
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SigningUrl string
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LogoURL string
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}{
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FullName: fullName,
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OrganizationName: organizationName,
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SigningUrl: signingUrl,
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LogoURL: baseURL + logoURLPath,
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}
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textBody, htmlBody, err = renderEmail(documentSigningTextTemplate, documentSigningHTMLTemplate, data)
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return fmt.Sprintf(subjectDocumentSigning, organizationName), textBody, htmlBody, err
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}
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func RenderDocumentExport(baseURL, fullName, downloadUrl string) (subject string, textBody string, htmlBody *string, err error) {
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data := struct {
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FullName string
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DownloadUrl string
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LogoURL string
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}{
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FullName: fullName,
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DownloadUrl: downloadUrl,
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LogoURL: baseURL + logoURLPath,
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}
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textBody, htmlBody, err = renderEmail(documentExportTextTemplate, documentExportHTMLTemplate, data)
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return subjectDocumentExport, textBody, htmlBody, err
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}
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func RenderFrameworkExport(baseURL, fullName, downloadUrl string) (subject string, textBody string, htmlBody *string, err error) {
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data := struct {
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FullName string
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DownloadUrl string
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LogoURL string
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}{
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FullName: fullName,
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DownloadUrl: downloadUrl,
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LogoURL: baseURL + logoURLPath,
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}
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textBody, htmlBody, err = renderEmail(frameworkExportTextTemplate, frameworkExportHTMLTemplate, data)
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return subjectFrameworkExport, textBody, htmlBody, err
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}
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func RenderTrustCenterAccess(baseURL, fullName, organizationName, accessUrl string, tokenDuration time.Duration) (subject string, textBody string, htmlBody *string, err error) {
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durationInDays := int(math.Round(tokenDuration.Hours() / 24))
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data := struct {
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FullName string
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OrganizationName string
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AccessUrl string
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LogoURL string
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DurationInDays int
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}{
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FullName: fullName,
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OrganizationName: organizationName,
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AccessUrl: accessUrl,
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LogoURL: baseURL + logoURLPath,
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DurationInDays: durationInDays,
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}
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textBody, htmlBody, err = renderEmail(trustCenterAccessTextTemplate, trustCenterAccessHTMLTemplate, data)
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return fmt.Sprintf(subjectTrustCenterAccess, organizationName), textBody, htmlBody, err
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}
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func RenderTrustCenterDocumentAccessRejected(
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baseURL string,
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fullName string,
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organizationName string,
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fileNames []string,
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) (subject string, textBody string, htmlBody *string, err error) {
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data := struct {
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FullName string
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OrganizationName string
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LogoURL string
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FileNames []string
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}{
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FullName: fullName,
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OrganizationName: organizationName,
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LogoURL: baseURL + logoURLPath,
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FileNames: fileNames,
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}
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textBody, htmlBody, err = renderEmail(trustCenterDocumentAccessRejectedTextTemplate, trustCenterDocumentAccessRejectedHTMLTemplate, data)
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return fmt.Sprintf(subjectTrustCenterDocumentAccessRejected, organizationName), textBody, htmlBody, err
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}
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func renderEmail(textTemplate *texttemplate.Template, htmlTemplate *htmltemplate.Template, data any) (textBody string, htmlBody *string, err error) {
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var textBuf bytes.Buffer
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if err := textTemplate.Execute(&textBuf, data); err != nil {
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return "", nil, fmt.Errorf("cannot execute text template: %w", err)
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}
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textBody = textBuf.String()
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var htmlBuf bytes.Buffer
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if err := htmlTemplate.Execute(&htmlBuf, data); err != nil {
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return "", nil, fmt.Errorf("cannot execute html template: %w", err)
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}
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htmlBodyStr := htmlBuf.String()
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htmlBody = &htmlBodyStr
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return textBody, htmlBody, nil
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}
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