feat: Class-specific announcements

src/db.rs

@@ -45,6 +45,8 @@ pub struct Announcement {
     pub end_date: String,
     pub created_at: String,
     pub flags: Vec<AnnouncementFlag>,
+    #[serde(default)]
+    pub classes: Vec<String>,
 }
 
 pub fn open(db_path: &str) -> Result<Connection> {
@@ -64,12 +66,16 @@ pub fn open(db_path: &str) -> Result<Connection> {
         "ALTER TABLE announcements ADD COLUMN flags TEXT NOT NULL DEFAULT '[]'",
         [],
     );
+    let _ = conn.execute(
+        "ALTER TABLE announcements ADD COLUMN classes TEXT NOT NULL DEFAULT '[]'",
+        [],
+    );
     Ok(conn)
 }
 
 pub fn get_for_date(conn: &Connection, date: &str) -> Result<Vec<Announcement>> {
     let mut stmt = conn.prepare(
-        "SELECT id, author, text_content, start_date, end_date, flags, created_at
+        "SELECT id, author, text_content, start_date, end_date, flags, classes, created_at
          FROM announcements
          WHERE date(?) BETWEEN date(start_date) AND date(end_date)
          ORDER BY created_at DESC",
@@ -90,7 +96,7 @@ pub fn list_all(
     let (sql, param_values): (&str, Vec<Box<dyn rusqlite::types::ToSql>>) =
         if let Some(date) = filter_date {
             (
-                "SELECT id, author, text_content, start_date, end_date, flags, created_at
+                "SELECT id, author, text_content, start_date, end_date, flags, classes, created_at
              FROM announcements
              WHERE date(?1) BETWEEN date(start_date) AND date(end_date)
              ORDER BY start_date DESC, created_at DESC
@@ -103,7 +109,7 @@ pub fn list_all(
             )
         } else {
             (
-                "SELECT id, author, text_content, start_date, end_date, flags, created_at
+                "SELECT id, author, text_content, start_date, end_date, flags, classes, created_at
              FROM announcements
              ORDER BY start_date DESC, created_at DESC
              LIMIT ?1 OFFSET ?2",
@@ -141,13 +147,22 @@ pub fn create(
     text_content: Option<&str>,
     start_date: &str,
     end_date: &str,
+    classes: &[String],
     flags: &[AnnouncementFlag],
 ) -> Result<Announcement> {
+    let classes_json = serde_json::to_string(classes).unwrap_or_else(|_| "[]".to_string());
     let flags_json = serde_json::to_string(flags).unwrap_or_else(|_| "[]".to_string());
     conn.execute(
-        "INSERT INTO announcements (author, text_content, start_date, end_date, flags)
+        "INSERT INTO announcements (author, text_content, start_date, end_date, classes, flags)
-         VALUES (?1, ?2, ?3, ?4, ?5)",
+         VALUES (?1, ?2, ?3, ?4, ?5, ?6)",
-        params![author, text_content, start_date, end_date, flags_json],
+        params![
+            author,
+            text_content,
+            start_date,
+            end_date,
+            classes_json,
+            flags_json
+        ],
     )?;
     let id = conn.last_insert_rowid();
     get_by_id(conn, id)?.ok_or_else(|| {
@@ -162,7 +177,9 @@ pub fn delete(conn: &Connection, id: i64) -> Result<bool> {
 
 fn map_row(row: &rusqlite::Row) -> rusqlite::Result<Announcement> {
     let flags_json: String = row.get(5)?;
+    let classes_json: String = row.get(6)?;
     let flags: Vec<AnnouncementFlag> = serde_json::from_str(&flags_json).unwrap_or_default();
+    let classes: Vec<String> = serde_json::from_str(&classes_json).unwrap_or_default();
     Ok(Announcement {
         id: row.get(0)?,
         author: row.get(1)?,
@@ -170,13 +187,14 @@ fn map_row(row: &rusqlite::Row) -> rusqlite::Result<Announcement> {
         start_date: row.get(3)?,
         end_date: row.get(4)?,
         flags,
-        created_at: row.get(6)?,
+        classes,
+        created_at: row.get(7)?,
     })
 }
 
 fn get_by_id(conn: &Connection, id: i64) -> Result<Option<Announcement>> {
     let mut stmt = conn.prepare(
-        "SELECT id, author, text_content, start_date, end_date, flags, created_at
+        "SELECT id, author, text_content, start_date, end_date, flags, classes, created_at
          FROM announcements WHERE id = ?1",
     )?;
     let mut rows = stmt.query_map(params![id], map_row)?;

src/management/mod.rs

@@ -92,7 +92,7 @@ async fn management_page(
     let total_pages = (total as u32).div_ceil(page_size).max(1);
 
     let rows: String = if announcements.is_empty() {
-        let colspan = if filter_date.is_some() { "8" } else { "7" };
+        let colspan = if filter_date.is_some() { "9" } else { "8" };
         format!(
             r#"<tr><td class="empty" colspan="{}">No announcements yet.</td></tr>"#,
             colspan
@@ -109,6 +109,15 @@ async fn management_page(
                     })
                     .collect::<Vec<_>>()
                     .join(" ");
+                let classes_display: String = if a.classes.is_empty() {
+                    r#"<span class="class-pill all">All</span>"#.to_string()
+                } else {
+                    a.classes
+                        .iter()
+                        .map(|c| format!(r#"<span class="class-pill">{}</span>"#, escape_html(c)))
+                        .collect::<Vec<_>>()
+                        .join(" ")
+                };
                 let text_display = a
                     .text_content
                     .as_ref()
@@ -121,6 +130,7 @@ async fn management_page(
                     text = text_display,
                     start = a.start_date,
                     end = a.end_date,
+                    classes_display = classes_display,
                     flags_display = flags_display,
                 )
             })
@@ -244,6 +254,8 @@ struct CreateInput {
     text_content: Option<String>,
     start_date: String,
     end_date: String,
+    #[serde(default)]
+    classes: String,
     #[serde(default, deserialize_with = "one_or_many")]
     flags: Vec<String>,
 }
@@ -263,10 +275,17 @@ async fn create_announcement(
         .filter_map(|s| s.parse::<AnnouncementFlag>().ok())
         .collect();
 
+    let classes: Vec<String> = input
+        .classes
+        .split(',')
+        .map(|s| s.trim().to_string())
+        .filter(|s| !s.is_empty())
+        .collect();
+
     let text = input.text_content.filter(|s| !s.is_empty());
 
     let conn = db.lock().await;
-    if let Err(e) = db::create(&conn, &input.author, text.as_deref(), &input.start_date, &input.end_date, &flags) {
+    if let Err(e) = db::create(&conn, &input.author, text.as_deref(), &input.start_date, &input.end_date, &classes, &flags) {
         return (
             StatusCode::INTERNAL_SERVER_ERROR,
             [("location", "/")],

templates/announcement_row.html

@@ -4,6 +4,7 @@
     <td class="cell-text" title="{text}">{text}</td>
     <td class="cell-date">{start}</td>
     <td class="cell-date">{end}</td>
+    <td>{classes_display}</td>
     <td>{flags_display}</td>
     <td class="cell-actions">
         <form action="/api/announcements/{id}/delete" method="POST" style="display:inline" onsubmit="return confirm('Delete announcement #{id}?')">

templates/management_page.html

@@ -42,6 +42,9 @@
         .cell-actions {{ white-space: nowrap; }}
 
         .flag {{ display: inline-block; padding: 0.2rem 0.55rem; border-radius: 999px; background: #dbeafe; color: #1e40af; font-size: 0.75rem; font-weight: 500; white-space: nowrap; }}
+        .class-pill {{ display: inline-block; padding: 0.2rem 0.55rem; border-radius: 999px; background: #f0fdf4; color: #166534; font-size: 0.75rem; font-weight: 500; white-space: nowrap; }}
+        .class-pill.all {{ background: #f1f5f9; color: #64748b; font-style: italic; }}
+        .field-hint {{ font-size: 0.8rem; color: #94a3b8; font-weight: 400; }}
         .empty {{ padding: 3rem 1rem; text-align: center; color: #94a3b8; font-size: 0.95rem; }}
 
         .pagination {{ display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; padding: 1rem 1.25rem; background: #fff; border-top: 1px solid #e2e8f0; }}
@@ -93,6 +96,7 @@
                         <th>Text</th>
                         <th>Start</th>
                         <th>End</th>
+                        <th>For</th>
                         <th>Flags</th>
                         <th>Actions</th>
                     </tr>
@@ -125,7 +129,12 @@
                     End date
                     <input type="date" name="end_date" required>
                 </label>
-                <label style="gap:0.5rem">
+                <label>
+                    Classes
+                    <input id="classes-input" name="classes" placeholder="e.g. C2c, A1" autocomplete="off">
+                    <span class="field-hint">Leave empty for all classes. Separate multiple with commas.</span>
+                </label>
+                <label id="flags-section" style="gap:0.5rem">
                     Flags
                     <div class="flag-checkboxes">
                         {flags_checkboxes}
@@ -138,5 +147,23 @@
             </div>
         </form>
     </dialog>
+
+    <script>
+        document.addEventListener('DOMContentLoaded', function() {{
+            var classesInput = document.getElementById('classes-input');
+            var flagsSection = document.getElementById('flags-section');
+            function toggleFlags() {{
+                if (classesInput.value.trim() !== '') {{
+                    flagsSection.style.display = 'none';
+                    var cbs = flagsSection.querySelectorAll('input[type="checkbox"]');
+                    for (var i = 0; i < cbs.length; i++) {{ cbs[i].checked = false; }}
+                }} else {{
+                    flagsSection.style.display = '';
+                }}
+            }}
+            classesInput.addEventListener('input', toggleFlags);
+            toggleFlags();
+        }});
+    </script>
 </body>
 </html>