extensions-api: store, part 1

Signed-off-by: Roman <ixrock@gmail.com>

src/extensions/extension-store.ts

@@ -0,0 +1,77 @@
+import { action, observable, toJS } from "mobx";
+import { BaseStore } from "../common/base-store";
+import { LensExtension } from "./extension";
+
+export type ExtensionId = string;
+export type ExtensionVersion = string | number;
+
+export interface ExtensionStoreModel {
+  version: ExtensionVersion;
+  extensions: Record<ExtensionId, ExtensionModel>
+}
+
+export interface ExtensionModel {
+  id: ExtensionId;
+  version: ExtensionVersion;
+  name: string;
+  description?: string;
+  enabled?: boolean;
+}
+
+export class ExtensionStore extends BaseStore<ExtensionStoreModel> {
+  private constructor() {
+    super({
+      configName: "lens-extension-store",
+    });
+  }
+
+  @observable version: ExtensionVersion = "0.0.0";
+  @observable extensions = observable.map<ExtensionId, LensExtension>();
+  @observable removed = observable.map<ExtensionId, LensExtension>();
+
+  getById(id: ExtensionId): LensExtension {
+    return this.extensions.get(id);
+  }
+
+  async removeById(id: ExtensionId) {
+    const extension = this.getById(id);
+    if (extension) {
+      this.extensions.delete(id);
+      return extension.uninstall();
+    }
+  }
+
+  @action
+  protected fromStore({ extensions, version }: ExtensionStoreModel) {
+    if (version) {
+      this.version = version;
+    }
+    if (extensions) {
+      const currentExtensions = new Map(Object.entries(extensions));
+      this.extensions.forEach(extension => {
+        if (!currentExtensions.has(extension.id)) {
+          this.removed.set(extension.id, extension);
+        }
+      })
+      currentExtensions.forEach(model => {
+        const extension = this.getById(model.id)
+        if (!extension) {
+          this.extensions.set(model.id, new LensExtension(model));
+        } else {
+          extension.importModel(model);
+        }
+      })
+    }
+  }
+
+  toJSON(): ExtensionStoreModel {
+    return toJS({
+      version: this.version,
+      extensions: this.extensions.toJSON(),
+    }, {
+      recurseEverything: true,
+    })
+  }
+}
+
+export const extensionStore = ExtensionStore.getInstance<ExtensionStore>()

src/extensions/extension.ts

@@ -0,0 +1,38 @@
+import { observable } from "mobx";
+import { ExtensionModel } from "./extension-store";
+
+export type ExtensionId = string;
+export type ExtensionVersion = string | number;
+
+export class LensExtension implements ExtensionModel {
+  public id: ExtensionId;
+  public version: string | number;
+
+  @observable name = "";
+  @observable description = "";
+  @observable isEnabled = false;
+
+  constructor(model: ExtensionModel) {
+    this.importModel(model);
+  }
+
+  importModel(model: ExtensionModel) {
+    Object.assign(this, model);
+  }
+
+  async install() {
+    // todo
+  }
+
+  async uninstall() {
+    // todo
+  }
+
+  async enable() {
+    // todo
+  }
+
+  async disable() {
+    // todo
+  }
+}