start replacing activitybuilder

src/model/activity.rs

@@ -1,6 +1,9 @@
 use std::ops::DerefMut;
 
-use super::{role::Role, user::User};
+use super::{
+    role::Role,
+    user::{ManageUserUser, User},
+};
 use chrono::{DateTime, Duration, Local, NaiveDateTime, TimeZone, Utc};
 use serde::{Deserialize, Serialize};
 use sqlx::{FromRow, Sqlite, SqlitePool, Transaction};
@@ -14,6 +17,29 @@ pub struct Activity {
     pub keep_until: Option<NaiveDateTime>,
 }
 
+pub enum Reason<'a> {
+    // `User` tried to login with `String` as UserAgent
+    SuccLogin(&'a User, String),
+    // `User` changed the data of `User`, explanation in `String`
+    UserDataChange(&'a ManageUserUser, &'a User, String),
+}
+
+impl From<Reason<'_>> for ActivityBuilder {
+    fn from(value: Reason<'_>) -> Self {
+        match value {
+            Reason::SuccLogin(user, agent) => {
+                Self::new(&format!("{user} hat sich eingeloggt (User-Agent: {agent})"))
+                    .relevant_for_user(user)
+                    .keep_until_days(7)
+            }
+            Reason::UserDataChange(changed_by, changed_user, explanation) => Self::new(&format!(
+                "{changed_by} hat die Daten von {changed_user} aktualisiert: {explanation}"
+            ))
+            .relevant_for_user(changed_user),
+        }
+    }
+}
+
 pub struct ActivityBuilder {
     text: String,
     relevant_for: String,
@@ -21,6 +47,7 @@ pub struct ActivityBuilder {
 }
 
 impl ActivityBuilder {
+    /// TODO: maybe make this private, and only allow specific acitivites defined in `Reason`
     #[must_use]
     pub fn new(text: &str) -> Self {
         Self {