i18n: per-network locale (en/es/fr) for karma replies and the web board

tests/karma.rs

@@ -1,5 +1,6 @@
 use rustbot::bot::module::{Action, Chat, Command, Module};
 use rustbot::bot::modules::karma::{extract_reason, format_event, parse_changes, Karma};
+use rustbot::i18n::Locale;
 
 fn chat<'a>(sender: &'a str, text: &'a str) -> Chat<'a> {
     Chat {
@@ -208,3 +209,53 @@ fn on_message_appends_to_the_event_log() {
     let _ = std::fs::remove_file(&path);
     let _ = std::fs::remove_file(&log);
 }
+
+#[test]
+fn spanish_reason_connector_is_stripped() {
+    assert_eq!(
+        extract_reason("rust++ porque es rápido").as_deref(),
+        Some("es rápido")
+    );
+    assert_eq!(
+        extract_reason("rust++ por los tests").as_deref(),
+        Some("los tests")
+    );
+}
+
+#[test]
+fn replies_in_spanish_for_es_locale() {
+    let path = std::env::temp_dir().join("rubot-test-karma-es.json");
+    let log = std::env::temp_dir().join("rubot-test-karma-es.events.jsonl");
+    let _ = std::fs::remove_file(&path);
+    let _ = std::fs::remove_file(&log);
+    let mut k = Karma::with_path_locale(path.clone(), Locale::Es);
+    k.on_message(&chat("alice", "rust++ porque es bueno"));
+    // report
+    let cmd = Command {
+        sender: "z",
+        reply_to: "#argentina",
+        name: "karma",
+        args: &["rust"],
+        prefix: ">",
+        network: "libera",
+    };
+    let r = match k.on_command(&cmd).as_slice() {
+        [Action::Reply(s)] => visible(s),
+        _ => panic!("expected one reply"),
+    };
+    assert!(r.contains("tiene 1 de karma"), "{r}");
+    assert!(r.contains("(#1 de 1)"), "{r}");
+    assert!(r.contains("último: \"es bueno\""), "{r}");
+    // unseen thing
+    let cmd2 = Command {
+        args: &["ghost"],
+        ..cmd
+    };
+    let ghost = match k.on_command(&cmd2).as_slice() {
+        [Action::Reply(s)] => visible(s),
+        _ => panic!("expected one reply"),
+    };
+    assert!(ghost.contains("todavía no hay karma para"), "{ghost}");
+    let _ = std::fs::remove_file(&path);
+    let _ = std::fs::remove_file(&log);
+}