Rename wrong naming SSO to Passwordless

src/main/kotlin/component/auth/PasswordlessAuth.kt

@@ -0,0 +1,57 @@
+package fr.dcproject.component.auth
+
+import com.sendgrid.helpers.mail.Mail
+import com.sendgrid.helpers.mail.objects.Content
+import com.sendgrid.helpers.mail.objects.Email
+import fr.dcproject.component.citizen.CitizenRepository
+import fr.dcproject.component.citizen.CitizenWithEmail
+import fr.dcproject.component.citizen.CitizenWithUserI
+import fr.dcproject.makeToken
+import fr.dcproject.messages.Mailer
+import io.ktor.http.*
+
+/**
+ * Send a connexion link by email
+ */
+class PasswordlessAuth(
+    private val mailer: Mailer,
+    private val domain: String,
+    private val citizenRepo: CitizenRepository
+) {
+    fun sendEmail(email: String, url: String) {
+        val citizen = citizenRepo.findByEmail(email) ?: noEmail(email)
+        sendEmail(citizen, url)
+    }
+
+    fun <C> sendEmail(citizen: C, url: String) where C : CitizenWithEmail, C : CitizenWithUserI {
+        mailer.sendEmail {
+            val token = citizen.user.makeToken()
+            Mail(
+                Email("passwordless-auth@$domain"),
+                "Connection",
+                Email(citizen.email),
+                Content("text/plain", generateContent(token, url))
+            ).apply {
+                addContent(Content("text/html", generateHtmlContent(token, url)))
+            }
+        }
+    }
+
+    private fun generateHtmlContent(token: String, url: String): String? {
+        val urlObject = URLBuilder(url)
+        urlObject.parameters.append("token", token)
+        return "Click <a href=\"${urlObject.buildString()}\">here</a> for connect to $domain"
+    }
+
+    private fun generateContent(token: String, url: String): String {
+        val urlObject = URLBuilder(url)
+        urlObject.parameters.append("token", token)
+        return "Copy this link into your browser for connect to $domain: \n${urlObject.buildString()}"
+    }
+
+    class EmailNotFound(val email: String) : Exception() {
+        override val message: String = "No Citizen with this email : $email"
+    }
+
+    private fun noEmail(email: String): Nothing = throw EmailNotFound(email)
+}