1 files changed, 76 insertions, 0 deletions
diff --git a/packages/gitbook-core/src/lib/createContext.js b/packages/gitbook-core/src/lib/createContext.js
new file mode 100644
index 0000000..ba0c7e1
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+++ b/packages/gitbook-core/src/lib/createContext.js
@@ -0,0 +1,76 @@
+/* eslint-disable no-console */
+const Redux = require('redux');
+const ReduxThunk = require('redux-thunk').default;
+
+const Plugin = require('../models/Plugin');
+const Context = require('../models/Context');
+const coreReducers = require('../reducers');
+const composeReducer = require('./composeReducer');
+
+const Components = require('../actions/components');
+const I18n = require('../actions/i18n');
+const History = require('../actions/history');
+
+const isBrowser = (typeof window !== 'undefined');
+
+/**
+ * The core plugin defines the defualt behaviour of GitBook and provides
+ * actions to other plugins.
+ * @type {Plugin}
+ */
+const corePlugin = new Plugin({
+    reduce: coreReducers,
+    actions: {
+        Components, I18n, History
+    }
+});
+
+/**
+ * Create a new context containing redux store from an initial state and a list of plugins.
+ * Each plugin entry is the result of {createPlugin}.
+ *
+ * @param  {Array<Plugin>} plugins
+ * @param  {Object} initialState
+ * @return {Context} context
+ */
+function createContext(plugins, initialState) {
+    plugins = [corePlugin].concat(plugins);
+
+    // Compose the reducer from core with plugins
+    const pluginReducers = plugins.map(plugin => plugin.reduce);
+    const reducer = composeReducer(...pluginReducers);
+
+    // Get actions from all plugins
+    const actions = plugins.reduce((accu, plugin) => {
+        return Object.assign(accu, plugin.actions);
+    }, {});
+
+    // Create thunk middleware which include actions
+    const thunk = ReduxThunk.withExtraArgument(actions);
+
+    // Create the redux store
+    const store = Redux.createStore(
+        (state, action) => {
+            if (isBrowser) {
+                console.log('[store]', action.type);
+            }
+            return reducer(state, action);
+        },
+        initialState,
+        Redux.compose(Redux.applyMiddleware(thunk))
+    );
+
+    // Create the context
+    const context = new Context({
+        store,
+        plugins,
+        actions
+    });
+
+    // Initialize the plugins
+    context.activate();
+
+    return context;
+}
+
+module.exports = createContext;