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/* 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 Navigation = require('../actions/navigation');
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({
activate: (dispatch) => {
dispatch(Navigation.activate());
},
deactivate: (dispatch) => {
dispatch(Navigation.deactivate());
},
reduce: coreReducers,
actions: {
Components, I18n, Navigation
}
});
/**
* 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))
);
// Initialize the plugins
plugins.forEach(plugin => {
plugin.init(store.dispatch, store.getState, actions);
});
return new Context({
store,
actions
});
}
module.exports = createContext;
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