Can login with SSO & change Password

src/main/kotlin/fr/dcproject/messages/SsoManager.kt

@@ -0,0 +1,41 @@
+package fr.dcproject.messages
+
+import com.sendgrid.helpers.mail.Mail
+import com.sendgrid.helpers.mail.objects.Content
+import com.sendgrid.helpers.mail.objects.Email
+import fr.dcproject.JwtConfig
+import io.ktor.http.URLBuilder
+import fr.dcproject.entity.Citizen as CitizenEntity
+import fr.dcproject.repository.Citizen as CitizenRepository
+
+class SsoManager (
+    private val mailer: Mailer,
+    private val domain: String,
+    private val citizenRepo: CitizenRepository
+) {
+    fun sendMail(email: String, url: String) {
+        val citizen = citizenRepo.findByEmail(email) ?: error("No Citizen with this email")
+        mailer.sendEmail {
+            Mail(
+                Email("sso@$domain"),
+                "Connection",
+                Email(email),
+                Content("text/plain", generateContent(citizen, url))
+            ).apply {
+                addContent(Content("text/html", generateHtmlContent(citizen, url)))
+            }
+        }
+    }
+
+    private fun generateHtmlContent(citizen: CitizenEntity, url: String): String? {
+        val urlObject = URLBuilder(url)
+        urlObject.parameters.append("token", JwtConfig.makeToken(citizen.user ?: error("Citizen must have User")))
+        return "Click <a href=\"$urlObject\">here</a> for connect to $domain"
+    }
+
+    private fun generateContent(citizen: CitizenEntity, url: String): String {
+        val urlObject = URLBuilder(url)
+        urlObject.parameters.append("token", JwtConfig.makeToken(citizen.user ?: error("Citizen must have User")))
+        return "Copy this link into your browser for connect to $domain: \n$urlObject"
+    }
+}