ai: more context in system prompt

.config/quickshell/ii/services/Ai.qml

@@ -6,6 +6,7 @@ import qs.modules.common
 import qs
 import Quickshell
 import Quickshell.Io
+import Quickshell.Wayland
 import QtQuick
 import "./ai/"
 
@@ -25,7 +26,15 @@ Singleton {
     readonly property string interfaceRole: "interface"
     readonly property string apiKeyEnvVarName: "API_KEY"
 
-    property string systemPrompt: Config.options?.ai?.systemPrompt ?? ""
+    property string systemPrompt: {
+        let prompt = Config.options?.ai?.systemPrompt ?? "";
+        for (let key in root.promptSubstitutions) {
+            // prompt = prompt.replaceAll(key, root.promptSubstitutions[key]);
+            // QML/JS doesn't support replaceAll, so use split/join
+            prompt = prompt.split(key).join(root.promptSubstitutions[key]);
+        }
+        return prompt;
+    }
     // property var messages: []
     property var messageIDs: []
     property var messageByID: ({})
@@ -60,6 +69,13 @@ Singleton {
     property list<var> promptFiles: [...defaultPrompts, ...userPrompts]
     property list<var> savedChats: []
 
+    property var promptSubstitutions: {
+        "{DISTRO}": SystemInfo.distroName,
+        "{DATETIME}": `${DateTime.time}, ${DateTime.collapsedCalendarFormat}`,
+        "{WINDOWCLASS}": ToplevelManager.activeToplevel.appId,
+        "{DE}": `${SystemInfo.desktopEnvironment} (${SystemInfo.windowingSystem})` 
+    }
+
     // Gemini: https://ai.google.dev/gemini-api/docs/function-calling
     // OpenAI: https://platform.openai.com/docs/guides/function-calling
     property string currentTool: Config?.options.ai.tool ?? "search"

.config/quickshell/ii/services/SystemInfo.qml

@@ -20,6 +20,8 @@ Singleton {
     property string bugReportUrl: ""
     property string privacyPolicyUrl: ""
     property string logo: ""
+    property string desktopEnvironment: ""
+    property string windowingSystem: ""
 
     Timer {
         triggeredOnStart: true
@@ -83,6 +85,20 @@ Singleton {
         }
     }
 
+    Process {
+        id: getDesktopEnvironment
+        running: true
+        command: ["bash", "-c", "echo $XDG_CURRENT_DESKTOP,$WAYLAND_DISPLAY"]
+        stdout: StdioCollector {
+            id: deCollector
+            onStreamFinished: {
+                const [desktop, wayland] = deCollector.text.split(",")
+                root.desktopEnvironment = desktop.trim()
+                root.windowingSystem = wayland.trim().length > 0 ? "Wayland" : "X11" // Are there others? 🤔
+            }
+        }
+    }
+
     FileView {
         id: fileOsRelease
         path: "/etc/os-release"