dev: add startup apps, start emulator by default

doc/devmeta/track-comments.md

@@ -57,3 +57,6 @@ Comments beginning with `// track:`. See
   It may be applicable to write an iterator in the
   future, or something will come up that require
   these to be handled with a modular approach instead.
+- `track: checkpoint`
+  A location where some statement about the state of the
+  software must hold true.

src/backend/src/services/BaseService.js

@@ -16,11 +16,11 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-const { AdvancedBase } = require("../../../putility");
+const { concepts } = require("@heyputer/putility");
 
 const NOOP = async () => {};
 
-class BaseService extends AdvancedBase {
+class BaseService extends concepts.Service {
     constructor (service_resources, ...a) {
         const { services, config, my_config, name, args } = service_resources;
         super(service_resources, ...a);

src/gui/src/UI/UIDesktop.js

@@ -1022,6 +1022,12 @@ async function UIDesktop(options){
     // adjust window container to take into account the toolbar height
     $('.window-container').css('top', window.toolbar_height);
 
+    // track: checkpoint
+    //-----------------------------
+    // GUI is ready to launch apps!
+    //-----------------------------
+
+    globalThis.services.emit('gui:ready');
 
     //--------------------------------------------------------------------------------------
     // Determine if an app was launched from URL

src/gui/src/definitions.js

@@ -17,9 +17,13 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import { AdvancedBase } from "@heyputer/putility";
+import { concepts, AdvancedBase } from "@heyputer/putility";
 
-export class Service {
+export class Service extends concepts.Service {
+    // TODO: Service todo items
+    static TODO = [
+        'consolidate with BaseService from backend'
+    ];
     construct (o) {
         this.$puter = {};
         for ( const k in o ) this.$puter[k] = o[k];
@@ -28,6 +32,7 @@ export class Service {
     }
     init (...a) {
         if ( ! this._init ) return;
+        this.services = a[0].services;
         return this._init(...a)
     }
 };

src/gui/src/initgui.js

@@ -55,6 +55,11 @@ const launch_services = async function (options) {
     const services_m_ = {};
     globalThis.services = {
         get: (name) => services_m_[name],
+        emit: (id, args) => {
+            for (const [_, instance] of services_l_) {
+                instance.__on(id, args ?? []);
+            }
+        }
     };
     const register = (name, instance) => {
         services_l_.push([name, instance]);

src/gui/src/services/ProcessService.js

@@ -22,6 +22,10 @@ import { InitProcess, Service } from "../definitions.js";
 const NULL_UUID = '00000000-0000-0000-0000-000000000000';
 
 export class ProcessService extends Service {
+    static INITRC = [
+        'test-emu'
+    ];
+
     async _init () {
         this.processes = [];
         this.processes_map = new Map();
@@ -33,6 +37,19 @@ export class ProcessService extends Service {
         this.register_(root);
     }
 
+    ['__on_gui:ready'] () {
+        const svc_exec = this.services.get('exec');
+        for ( let spec of ProcessService.INITRC ) {
+            if ( typeof spec === 'string' ) {
+                spec = { name: spec };
+            }
+
+            svc_exec.launchApp({
+                app_name: spec.name,
+            });
+        }
+    }
+
     get_init () {
         return this.processes_map.get(NULL_UUID);
     }

src/putility/index.js

@@ -17,10 +17,14 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 const { AdvancedBase } = require('./src/AdvancedBase');
+const { Service } = require('./src/concepts/Service');
 
 module.exports = {
     AdvancedBase,
     libs: {
         promise: require('./src/libs/promise'),
     },
+    concepts: {
+        Service,
+    },
 };

src/putility/src/concepts/Service.js

@@ -0,0 +1,26 @@
+const { AdvancedBase } = require("../AdvancedBase");
+
+const NOOP = async () => {};
+
+/**
+ * Service will be incrementally updated to consolidate
+ * BaseService in Puter's backend with Service in Puter's frontend,
+ * becoming the common base for both and a useful utility in general.
+ */
+class Service extends AdvancedBase {
+    async __on (id, args) {
+        const handler = this.__get_event_handler(id);
+
+        return await handler(id, ...args);
+    }
+
+    __get_event_handler (id) {
+        return this[`__on_${id}`]?.bind?.(this)
+            || this.constructor[`__on_${id}`]?.bind?.(this.constructor)
+            || NOOP;
+    }
+}
+
+module.exports = {
+    Service,
+};