api: jsonrpc api get_all_ui_config_keys to get all "ui.*" config keys (#7579)

Adds an api to get all ui config keys. There already is an option to get
all normal config keys (`"sys.config_keys"`), but before this pr there
was no way to get all `ui.*` config keys.

#### Why is this api needed?

For webxdc cleanup on desktop, which stores window position in a ui
config key (such as `ui.desktop.webxdcBounds.676464`) as soon as a
webxdc is opened since many versions now. So listing all ui keys is a
good way for us to find out which webxdc may have web data stored.
unfortunately electron does not (yet?) have a way to list all origins
that have web-data like android does, so this is the next best thing we
can do before itterating all possible ids, see also
https://github.com/deltachat/deltachat-desktop/issues/5758.

#### Why is this only a jsonrpc api and not another special/virtual
config key like `"sys.config_keys"`?

r10s indicated that `ui.*`-config keys are barely used
(https://github.com/deltachat/deltachat-desktop/issues/5790#issuecomment-3598512802),
so I thought it makes more sense to add it as dedicated api which's
existentence is checked by the typechecker, so it will be easier to not
miss it when we should remove the api again in the future.

But we could also do a dedicated special/virtual config key for it, if
you think that is better, this is easy to change.

---------

Co-authored-by: iequidoo <117991069+iequidoo@users.noreply.github.com>

deltachat-jsonrpc/src/api.rs

@@ -15,7 +15,7 @@ use deltachat::chat::{
     MessageListOptions,
 };
 use deltachat::chatlist::Chatlist;
-use deltachat::config::Config;
+use deltachat::config::{get_all_ui_config_keys, Config};
 use deltachat::constants::DC_MSG_ID_DAYMARKER;
 use deltachat::contact::{may_be_valid_addr, Contact, ContactId, Origin};
 use deltachat::context::get_info;
@@ -452,6 +452,12 @@ impl CommandApi {
         Ok(result)
     }
 
+    /// Returns all `ui.*` config keys that were set by the UI.
+    async fn get_all_ui_config_keys(&self, account_id: u32) -> Result<Vec<String>> {
+        let ctx = self.get_context(account_id).await?;
+        get_all_ui_config_keys(&ctx).await
+    }
+
     async fn set_stock_strings(&self, strings: HashMap<u32, String>) -> Result<()> {
         let accounts = self.accounts.read().await;
         for (stock_id, stock_message) in strings {

src/config.rs

@@ -983,5 +983,18 @@ fn get_config_keys_string() -> String {
     format!(" {keys} ")
 }
 
+/// Returns all `ui.*` config keys that were set by the UI.
+pub async fn get_all_ui_config_keys(context: &Context) -> Result<Vec<String>> {
+    let ui_keys = context
+        .sql
+        .query_map_vec(
+            "SELECT keyname FROM config WHERE keyname GLOB 'ui.*' ORDER BY config.id",
+            (),
+            |row| Ok(row.get::<_, String>(0)?),
+        )
+        .await?;
+    Ok(ui_keys)
+}
+
 #[cfg(test)]
 mod config_tests;

src/config/config_tests.rs

@@ -81,6 +81,37 @@ async fn test_ui_config() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn test_get_all_ui_config_keys() -> Result<()> {
+    let t = TestContext::new().await;
+
+    t.set_ui_config("ui.android.screen_security", Some("safe"))
+        .await?;
+    t.set_ui_config("ui.lastchatid", Some("231")).await?;
+    t.set_ui_config(
+        "ui.desktop.webxdcBounds.528490",
+        Some(r#"{"x":954,"y":356,"width":378,"height":671}"#),
+    )
+    .await?;
+    t.set_ui_config(
+        "ui.desktop.webxdcBounds.556543",
+        Some(r#"{"x":954,"y":356,"width":378,"height":671}"#),
+    )
+    .await?;
+
+    assert_eq!(
+        get_all_ui_config_keys(&t).await?,
+        vec![
+            "ui.android.screen_security",
+            "ui.lastchatid",
+            "ui.desktop.webxdcBounds.528490",
+            "ui.desktop.webxdcBounds.556543"
+        ]
+    );
+
+    Ok(())
+}
+
 /// Regression test for https://github.com/deltachat/deltachat-core-rust/issues/3012
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
 async fn test_set_config_bool() -> Result<()> {