v0.1.0-pre.044

kb-app-demo-desktop/src/lib.rs

@@ -0,0 +1,93 @@
+// file: kb-app-demo-desktop/src/lib.rs
+// version: 1
+
+//! Tauri desktop demo application for `khadhroony-bot3`.
+
+#![forbid(unsafe_code)]
+#![deny(unreachable_pub)]
+#![warn(missing_docs)]
+
+mod constants;
+mod splash;
+
+use tauri::Manager; // rust-rules: trait-import
+
+/// Runs the desktop demo application.
+pub async fn run() -> kb_core::Result<()> {
+    let builder = tauri::Builder::default().setup(|app| {
+        let splash_window = match app.get_webview_window("splash") {
+            std::option::Option::Some(window) => window,
+            std::option::Option::None => {
+                return std::result::Result::Err(std::boxed::Box::new(std::io::Error::new(
+                    std::io::ErrorKind::NotFound,
+                    "splash window is missing",
+                )));
+            },
+        };
+        let main_window = match app.get_webview_window("main") {
+            std::option::Option::Some(window) => window,
+            std::option::Option::None => {
+                return std::result::Result::Err(std::boxed::Box::new(std::io::Error::new(
+                    std::io::ErrorKind::NotFound,
+                    "main window is missing",
+                )));
+            },
+        };
+        tauri::async_runtime::spawn(async move {
+            let started_at = tokio::time::Instant::now();
+            crate::emit_splash_order(
+                &splash_window,
+                "fadein",
+                std::option::Option::None,
+                std::option::Option::None,
+                std::option::Option::Some(crate::SPLASH_FADE_MS),
+            );
+            crate::emit_splash_order(
+                &splash_window,
+                "add_msg",
+                std::option::Option::Some("Initialisation de Khadhroony Bot3..."),
+                std::option::Option::Some("info"),
+                std::option::Option::None,
+            );
+            crate::wait_until_minimum(started_at, crate::SPLASH_MINIMUM_MS).await;
+            crate::emit_splash_order(
+                &splash_window,
+                "fadeout",
+                std::option::Option::None,
+                std::option::Option::None,
+                std::option::Option::Some(crate::SPLASH_FADE_MS),
+            );
+            tokio::time::sleep(std::time::Duration::from_millis(crate::SPLASH_CLOSE_WAIT_MS)).await;
+            if let std::result::Result::Err(error) = splash_window.destroy() {
+                tracing::error!(target: crate::TRACING_TARGET, "cannot destroy splash window: {error:?}");
+            }
+            if let std::result::Result::Err(error) = main_window.show() {
+                tracing::error!(target: crate::TRACING_TARGET, "cannot show main window: {error:?}");
+            }
+            if let std::result::Result::Err(error) = main_window.set_focus() {
+                tracing::error!(target: crate::TRACING_TARGET, "cannot focus main window: {error:?}");
+            }
+        });
+        return std::result::Result::Ok(());
+    });
+    let run_result = builder.run(tauri::generate_context!());
+    return match run_result {
+        std::result::Result::Ok(()) => std::result::Result::Ok(()),
+        std::result::Result::Err(error) => std::result::Result::Err(kb_core::Error::tauri(format!(
+            "cannot run desktop demo application: {error:?}"
+        ))),
+    };
+}
+
+/// Minimum startup splash duration before fade-out begins.
+pub(crate) use self::splash::SPLASH_MINIMUM_MS;
+/// Splash fade duration.
+pub(crate) use self::splash::SPLASH_FADE_MS;
+/// Delay after fade-out before destroying the splash window.
+pub(crate) use self::splash::SPLASH_CLOSE_WAIT_MS;
+/// Emits one order to the splash frontend.
+pub(crate) use self::splash::emit_splash_order;
+/// Waits for the minimum splash duration.
+pub(crate) use self::splash::wait_until_minimum;
+/// Canonical tracing target for the desktop demo application.
+pub(crate) use self::constants::TRACING_TARGET;