StremioCore service implemented

src/services/StremioCore/StremioCore.js

@@ -0,0 +1,98 @@
+const EventEmitter = require('events');
+const { default: init, ContainerService } = require('stremio-core-web');
+
+function StremioCore() {
+    let active = false;
+    let error = null;
+    let starting = false;
+    let containerService = null;
+    let events = new EventEmitter();
+
+    function onStateChanged() {
+        events.emit('stateChanged');
+    }
+    function start() {
+        if (active || error !== null || starting) {
+            return;
+        }
+
+        starting = true;
+        events.on('error', () => { });
+        init()
+            .then(() => {
+                if (starting) {
+                    containerService = new ContainerService(({ name, args } = {}) => {
+                        if (active) {
+                            events.emit(name, args);
+                        }
+                    });
+                    active = true;
+                    onStateChanged();
+                }
+            })
+            .catch((e) => {
+                error = new Error('Unable to init stremio-core-web');
+                error.error = e;
+                onStateChanged();
+            })
+            .then(() => {
+                starting = false;
+            });
+    }
+    function stop() {
+        active = false;
+        error = null;
+        containerService = null;
+        onStateChanged();
+    }
+    function on(name, listener) {
+        events.on(name, listener);
+    }
+    function off(name, listener) {
+        events.off(name, listener);
+    }
+    function dispatch({ action, args } = {}) {
+        if (!active) {
+            return;
+        }
+
+        containerService.dispatch({ action, args });
+    }
+    function getState() {
+        if (!active) {
+            return {};
+        }
+
+        return containerService.get_state();
+    }
+
+    Object.defineProperties(this, {
+        active: {
+            configurable: false,
+            enumerable: true,
+            get: function() {
+                return active;
+            }
+        },
+        error: {
+            configurable: false,
+            enumerable: true,
+            get: function() {
+                return error;
+            }
+        }
+    });
+
+    this.start = start;
+    this.stop = stop;
+    this.on = on;
+    this.off = off;
+    this.dispatch = dispatch;
+    this.getState = getState;
+
+    Object.freeze(this);
+};
+
+Object.freeze(StremioCore);
+
+module.exports = StremioCore;

src/services/StremioCore/index.js

@@ -1 +1,3 @@
-//TODO
+const StremioCore = require('./StremioCore');
+
+module.exports = StremioCore;

src/services/index.js

@@ -1,8 +1,10 @@
 const KeyboardNavigation = require('./KeyboardNavigation');
 const { ServicesProvider, useServices } = require('./ServicesContext');
+const StremioCore = require('./StremioCore');
 
 module.exports = {
     KeyboardNavigation,
     ServicesProvider,
-    useServices
+    useServices,
+    StremioCore
 };