Add source URL tracking and display for AppImages

src/core/database.rs

@@ -1744,6 +1744,16 @@ impl Database {
         Ok(self.conn.last_insert_rowid())
     }
 
+    // --- Source URL ---
+
+    pub fn set_source_url(&self, id: i64, url: Option<&str>) -> SqlResult<()> {
+        self.conn.execute(
+            "UPDATE appimages SET source_url = ?2 WHERE id = ?1",
+            params![id, url],
+        )?;
+        Ok(())
+    }
+
     // --- Version rollback ---
 
     pub fn set_previous_version(&self, id: i64, path: Option<&str>) -> SqlResult<()> {

src/core/updater.rs

@@ -62,6 +62,29 @@ pub struct UpdateCheckResult {
     pub file_size: Option<u64>,
 }
 
+/// Detect the source URL for an AppImage from its update_info string.
+pub fn detect_source_url(update_info: Option<&str>) -> Option<String> {
+    let info = update_info?;
+    let parts: Vec<&str> = info.split('|').collect();
+    if info.starts_with("gh-releases-zsync|") && parts.len() >= 3 {
+        return Some(format!("https://github.com/{}/{}", parts[1], parts[2]));
+    }
+    if info.starts_with("gl-releases-zsync|") && parts.len() >= 4 {
+        return Some(format!("https://{}/{}/{}", parts[1], parts[2], parts[3]));
+    }
+    if info.starts_with("zsync|") {
+        if let Some(url_part) = parts.get(1) {
+            // Extract the base URL (up to the hostname)
+            if let Some(idx) = url_part.find("://") {
+                if let Some(slash) = url_part[idx + 3..].find('/') {
+                    return Some(url_part[..idx + 3 + slash].to_string());
+                }
+            }
+        }
+    }
+    None
+}
+
 /// Parse the raw update info string from an AppImage's ELF section.
 pub fn parse_update_info(raw: &str) -> Option<UpdateType> {
     let raw = raw.trim().trim_matches('\0');