@open-game-system/app-bridge-native/dist/index.mjs.map

React Native specific implementation of the app-bridge ecosystem

{"version":3,"sources":["../src/index.ts"],"sourcesContent":["import {\n  State,\n  Event,\n  Store,\n  CreateStore,\n  StoreConfig,\n  Producer,\n  NativeBridge,\n  StoreOnConfig,\n  WebView as BridgeWebView,\n  WebToNativeMessage,\n  NativeToWebMessage,\n  BridgeStores\n} from \"@open-game-system/app-bridge-types\";\nimport { produce } from \"immer\";\nimport { compare } from \"fast-json-patch\";\n\n// Re-export BridgeWebView as WebView for consistency within this package if needed\nexport type WebView = BridgeWebView;\n\n/**\n * Creates a new store with the given configuration according to Plan v4.\n */\nexport const createStore: CreateStore = <\n  S extends State,\n  E extends Event\n>(\n  config: StoreConfig<S, E>\n): Store<S, E> => {\n  let currentState = config.initialState;\n  const stateListeners = new Set<(state: S) => void>();\n  const eventListeners = new Map<string, Set<(event: E, store: Store<S, E>) => Promise<void> | void>>();\n\n  let storeInstance: Store<S, E>;\n\n  const notifyStateListeners = () => {\n    stateListeners.forEach(listener => listener(currentState));\n  };\n\n  const notifyEventListeners = (eventType: E['type'], event: E) => {\n    const listeners = eventListeners.get(eventType as string);\n    if (listeners) {\n      listeners.forEach(listener => {\n          try {\n              const result = listener(event, storeInstance);\n              if (result instanceof Promise) {\n                  result.catch(error => {\n                     console.error(`[Native Store] Unhandled promise rejection in async event listener for type \"${eventType}\":`, error);\n                  });\n              }\n          } catch (error) {\n              console.error(`[Native Store] Error in event listener for type \"${eventType}\":`, error);\n          }\n      });\n    }\n  };\n\n  storeInstance = {\n    getSnapshot: () => currentState,\n\n    dispatch: (event: E): void => {\n      let stateChanged = false;\n      if (config.producer) {\n        const nextState = produce(currentState, (draft: S) => {\n          config.producer!(draft, event);\n        });\n        if (nextState !== currentState) {\n            currentState = nextState;\n            stateChanged = true;\n        }\n      }\n\n      if (stateChanged) {\n        notifyStateListeners();\n      }\n\n      notifyEventListeners(event.type as E['type'], event);\n    },\n\n    subscribe: (listener: (state: S) => void) => {\n      stateListeners.add(listener);\n      listener(currentState);\n      return () => {\n        stateListeners.delete(listener);\n      };\n    },\n\n    on: <EventType extends E['type']>(\n      eventType: EventType,\n      listener: (event: Extract<E, { type: EventType }>, store: Store<S, E>) => Promise<void> | void\n    ): (() => void) => {\n       const eventTypeStr = eventType as string;\n      if (!eventListeners.has(eventTypeStr)) {\n        eventListeners.set(eventTypeStr, new Set());\n      }\n      const listeners = eventListeners.get(eventTypeStr)!;\n      const typedListener = listener as (event: E, store: Store<S, E>) => Promise<void> | void;\n      listeners.add(typedListener);\n\n      return () => {\n        listeners.delete(typedListener);\n        if (listeners.size === 0) {\n          eventListeners.delete(eventTypeStr);\n        }\n      };\n    },\n\n    reset: () => {\n      currentState = config.initialState;\n      notifyStateListeners();\n    }\n  };\n\n  if (config.on) {\n    for (const eventType in config.on) {\n       if (Object.prototype.hasOwnProperty.call(config.on, eventType)) {\n           const listener = config.on[eventType as E['type']];\n           if (listener) {\n               storeInstance.on(eventType as E['type'], listener);\n           }\n       }\n    }\n  }\n\n  return storeInstance;\n};\n\n/**\n * Creates a native bridge instance using the BridgeWebView type from types package.\n */\nexport function createNativeBridge<TStores extends BridgeStores>(): NativeBridge<TStores> {\n  const stores = new Map<keyof TStores, Store<TStores[keyof TStores][\"state\"], TStores[keyof TStores][\"events\"]>>();\n  const webViews = new Set<BridgeWebView>();\n  const readyWebViews = new Set<BridgeWebView>();\n  const readyStateListeners = new Map<BridgeWebView, Set<(isReady: boolean) => void>>();\n  const storeListeners = new Set<() => void>();\n\n  const notifyStoreListeners = () => {\n    storeListeners.forEach(listener => listener());\n  };\n\n  const notifyReadyStateListeners = (webView: BridgeWebView, isReady: boolean) => {\n    const listeners = readyStateListeners.get(webView);\n    if (listeners) {\n      listeners.forEach((listener) => listener(isReady));\n    }\n  };\n\n  const broadcastToWebViews = (message: NativeToWebMessage<TStores>) => {\n    const messageString = JSON.stringify(message);\n    webViews.forEach((webView) => {\n      if (webView.postMessage) {\n         webView.postMessage(messageString);\n      } else {\n         console.warn(\"[Native Bridge] WebView instance lacks postMessage method.\");\n      }\n    });\n  };\n\n  const processWebViewMessage = (\n    data: string,\n    sourceWebView?: BridgeWebView\n  ): void => {\n    let parsedData: WebToNativeMessage;\n    try {\n      parsedData = JSON.parse(data);\n    } catch (e) {\n      console.warn(\"[Native Bridge] Failed to parse message:\", data, e);\n      return;\n    }\n\n    if (!parsedData || typeof parsedData !== 'object' || !('type' in parsedData)) {\n      console.warn(\"[Native Bridge] Invalid message format:\", parsedData);\n      return;\n    }\n\n    switch (parsedData.type) {\n      case \"BRIDGE_READY\": {\n        const targetWebViews = sourceWebView ? [sourceWebView] : Array.from(webViews);\n        targetWebViews.forEach(webView => {\n            if (!webView) return;\n            readyWebViews.add(webView);\n            notifyReadyStateListeners(webView, true);\n            stores.forEach((store, key) => {\n                const initMessage = JSON.stringify({\n                    type: \"STATE_INIT\",\n                    storeKey: key,\n                    data: store.getSnapshot(),\n                });\n                if (webView.postMessage) webView.postMessage(initMessage);\n            });\n        });\n        break;\n      }\n      case \"EVENT\": {\n        const { storeKey, event } = parsedData;\n        const store = stores.get(storeKey as keyof TStores) as Store<any, typeof event> | undefined;\n        if (store) {\n          store.dispatch(event);\n        }\n        break;\n      }\n    }\n  };\n\n  return {\n    isSupported: () => true,\n\n    getStore: <K extends keyof TStores>(key: K) => {\n      return stores.get(key) as Store<TStores[K][\"state\"], TStores[K][\"events\"]> | undefined;\n    },\n\n    setStore: <K extends keyof TStores>(\n      key: K,\n      store: Store<TStores[K][\"state\"], TStores[K][\"events\"]> | undefined\n    ) => {\n      if (store === undefined) {\n        stores.delete(key);\n      } else {\n        let prevState = store.getSnapshot();\n        stores.set(key, store as Store<any, any>);\n\n        const initMessage = {\n          type: \"STATE_INIT\" as const,\n          storeKey: key,\n          data: store.getSnapshot(),\n        };\n        broadcastToWebViews(initMessage);\n\n        store.subscribe((currentState: TStores[K][\"state\"]) => {\n          const operations = compare(prevState, currentState);\n          if (operations.length > 0) {\n            broadcastToWebViews({\n              type: \"STATE_UPDATE\",\n              storeKey: key,\n              operations,\n            });\n          }\n          prevState = currentState;\n        });\n      }\n      notifyStoreListeners();\n    },\n\n    subscribe: (listener: () => void) => {\n      storeListeners.add(listener);\n      return () => {\n        storeListeners.delete(listener);\n      };\n    },\n\n    handleWebMessage: (message: string | { nativeEvent: { data: string } }) => {\n      const messageData =\n        typeof message === \"string\" ? message : message.nativeEvent.data;\n      processWebViewMessage(messageData, undefined);\n    },\n\n    registerWebView: (webView: BridgeWebView | null | undefined) => {\n      if (!webView) return () => {};\n      webViews.add(webView);\n      stores.forEach((store, key) => {\n         const initMessage = JSON.stringify({\n            type: \"STATE_INIT\",\n            storeKey: key,\n            data: store.getSnapshot(),\n         });\n         if (webView.postMessage) webView.postMessage(initMessage);\n      });\n      return () => {\n        webViews.delete(webView);\n        readyWebViews.delete(webView);\n        readyStateListeners.delete(webView);\n      };\n    },\n\n    unregisterWebView: (webView: BridgeWebView | null | undefined) => {\n      if (!webView) return;\n      webViews.delete(webView);\n      readyWebViews.delete(webView);\n      readyStateListeners.delete(webView);\n    },\n\n    subscribeToReadyState: (\n      webView: BridgeWebView | null | undefined,\n      callback: (isReady: boolean) => void\n    ) => {\n      if (!webView) {\n        callback(false);\n        return () => {};\n      }\n      let listeners = readyStateListeners.get(webView);\n      if (!listeners) {\n        listeners = new Set();\n        readyStateListeners.set(webView, listeners);\n      }\n      listeners.add(callback);\n      callback(readyWebViews.has(webView));\n      return () => {\n        const currentListeners = readyStateListeners.get(webView);\n        if (currentListeners) {\n          currentListeners.delete(callback);\n          if (currentListeners.size === 0) {\n            readyStateListeners.delete(webView);\n          }\n        }\n      };\n    },\n\n    getReadyState: (webView: BridgeWebView | null | undefined) => {\n      if (!webView) return false;\n      return readyWebViews.has(webView);\n    },\n  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