100 lines
3.3 KiB
Go
100 lines
3.3 KiB
Go
package mail
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import (
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"fmt"
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"time"
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)
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// SendLicense delivers the blob inline. It is signed public data, not a secret -
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// it is useless on any instance other than the one it names.
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func (s Sender) SendLicense(to, instanceName, blob string) error {
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return s.sendTemplate(to, "", "license", licenseData(instanceName, blob))
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}
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func licenseData(instanceName, blob string) any {
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return struct {
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InstanceName string
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Blob string
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Issued time.Time
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}{instanceName, blob, time.Now().UTC()}
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}
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// SendInstanceReady tells a customer their cloud instance exists, where it is,
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// and when its licence runs out.
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//
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// The expiry is stated here rather than only in a later reminder: a Free licence
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// that quietly expires in a month is a surprise, and the first email is the one
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// people keep.
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func (s Sender) SendInstanceReady(to, instanceName, loginURL string, expires time.Time) error {
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return s.sendTemplate(to, "", "instanceready", instanceReadyData(instanceName, loginURL, expires))
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}
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func instanceReadyData(instanceName, loginURL string, expires time.Time) any {
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return struct {
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InstanceName string
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LoginURL string
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Expires time.Time
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}{instanceName, loginURL, expires}
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}
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// SendRenewed confirms a renewal and states the new date.
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func (s Sender) SendRenewed(to, instanceName string, expires time.Time) error {
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return s.sendTemplate(to, "", "renewed", renewedData(instanceName, expires))
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}
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func renewedData(instanceName string, expires time.Time) any {
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return struct {
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InstanceName string
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Expires time.Time
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}{instanceName, expires}
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}
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// SendExpiring is the renew-now nudge, seven days out.
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func (s Sender) SendExpiring(to, instanceName, portalURL string, expires time.Time) error {
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return s.sendTemplate(to, "", "expiring", expiringData(instanceName, portalURL, expires))
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}
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func expiringData(instanceName, portalURL string, expires time.Time) any {
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return struct {
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InstanceName string
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PortalURL string
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Expires time.Time
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}{instanceName, portalURL, expires}
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}
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// SendExpired states plainly what has stopped and what happens next.
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//
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// It names the deletion date rather than a vague warning: the whole point of the
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// sequence is that nobody loses an instance without having been told a date. A
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// zero deleteOn means the reaper is disabled, and then no date is claimed.
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func (s Sender) SendExpired(to, instanceName, portalURL string, deleteOn time.Time) error {
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return s.sendTemplate(to, "", "expired", expiredData(instanceName, portalURL, deleteOn))
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}
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func expiredData(instanceName, portalURL string, deleteOn time.Time) any {
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return struct {
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InstanceName string
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PortalURL string
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DeleteOn time.Time
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}{instanceName, portalURL, deleteOn}
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}
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// SendDeletionWarning is the final countdown, sent at seven days and one day.
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func (s Sender) SendDeletionWarning(to, instanceName, portalURL string, deleteOn time.Time, daysLeft int) error {
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return s.sendTemplate(to, "", "deletionwarning", deletionWarningData(instanceName, portalURL, deleteOn, daysLeft))
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}
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func deletionWarningData(instanceName, portalURL string, deleteOn time.Time, daysLeft int) any {
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when := fmt.Sprintf("in %d days", daysLeft)
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if daysLeft <= 1 {
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when = "tomorrow"
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}
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return struct {
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InstanceName string
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PortalURL string
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When string
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DaysLeft int
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DeleteOn time.Time
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}{instanceName, portalURL, when, daysLeft, deleteOn}
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}
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