Files
dc-project/src/main/kotlin/fr/dcproject/component/notification/NotificationEmailSender.kt

71 lines
2.8 KiB
Kotlin

package fr.dcproject.component.notification
import com.sendgrid.helpers.mail.Mail
import com.sendgrid.helpers.mail.objects.Content
import com.sendgrid.helpers.mail.objects.Email
import fr.dcproject.common.email.Mailer
import fr.dcproject.common.entity.EntityI
import fr.dcproject.common.entity.TargetRef
import fr.dcproject.component.article.database.ArticleRepository
import fr.dcproject.component.article.database.ArticleWithTitleI
import fr.dcproject.component.citizen.database.CitizenCreatorI
import fr.dcproject.component.citizen.database.CitizenRepository
import fr.dcproject.component.follow.database.FollowForView
import java.util.UUID
class NotificationEmailSender(
private val mailer: Mailer,
private val domain: String,
private val citizenRepo: CitizenRepository,
private val articleRepo: ArticleRepository
) {
fun sendEmail(follow: FollowForView<out TargetRef>) {
val citizen = citizenRepo.findById(follow.createdBy.id) ?: noCitizen(follow.createdBy.id)
val target = when (follow.target.reference) {
"article" ->
articleRepo.findById(follow.target.id) ?: noTarget(follow.target.id)
else -> noTarget(follow.target.id)
}
val subject = when (follow.target.reference) {
"article" -> """New version for article "${target.title}""""
else -> "Notification"
}
mailer.sendEmail {
Mail(
Email("notification@$domain"),
subject,
Email(citizen.email),
Content("text/plain", generateContent(citizen, target))
).apply {
addContent(Content("text/html", generateHtmlContent(citizen, target)))
}
}
}
private fun generateHtmlContent(citizen: CitizenCreatorI, target: EntityI): String? {
return when (target) {
is ArticleWithTitleI -> """
Hello ${citizen.name.getFullName()},<br/>
The article "${target.title}" was updated, check it <a href="http://$domain/articles/${target.id}">here</a>
""".trimIndent()
else -> noTarget(target.id)
}
}
private fun generateContent(citizen: CitizenCreatorI, target: EntityI): String {
return when (target) {
is ArticleWithTitleI -> """
Hello ${citizen.name.getFullName()},
The article "${target.title}" was updated, check it here: http://$domain/articles/${target.id}
""".trimIndent()
else -> noTarget(target.id)
}
}
class NoCitizen(message: String) : Exception(message)
class NoTarget(message: String) : Exception(message)
private fun noCitizen(id: UUID): Nothing = throw NoCitizen("No Citizen with this id : $id")
private fun noTarget(id: UUID): Nothing = throw NoTarget("No Target with this id : $id")
}