/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";

const {FilterState} = require("devtools/client/webconsole/new-console-output/reducers/filters");
const {PrefState} = require("devtools/client/webconsole/new-console-output/reducers/prefs");
const {UiState} = require("devtools/client/webconsole/new-console-output/reducers/ui");
const {
  applyMiddleware,
  combineReducers,
  compose,
  createStore
} = require("devtools/client/shared/vendor/redux");
const { thunk } = require("devtools/client/shared/redux/middleware/thunk");
const {
  BATCH_ACTIONS,
  PREFS,
} = require("devtools/client/webconsole/new-console-output/constants");
const { reducers } = require("./reducers/index");
const Services = require("Services");

function configureStore() {
  const initialState = {
    prefs: new PrefState({
      logLimit: Math.max(Services.prefs.getIntPref("devtools.hud.loglimit"), 1),
    }),
    filters: new FilterState({
      error: Services.prefs.getBoolPref(PREFS.FILTER.ERROR),
      warn: Services.prefs.getBoolPref(PREFS.FILTER.WARN),
      info: Services.prefs.getBoolPref(PREFS.FILTER.INFO),
      log: Services.prefs.getBoolPref(PREFS.FILTER.LOG),
      net: Services.prefs.getBoolPref(PREFS.FILTER.NET),
      netxhr: Services.prefs.getBoolPref(PREFS.FILTER.NETXHR),
    }),
    ui: new UiState({
      filterBarVisible: Services.prefs.getBoolPref(PREFS.UI.FILTER_BAR),
    })
  };

  return createStore(
    combineReducers(reducers),
    initialState,
    compose(applyMiddleware(thunk), enableBatching())
  );
}

/**
 * A enhancer for the store to handle batched actions.
 */
function enableBatching() {
  return next => (reducer, initialState, enhancer) => {
    function batchingReducer(state, action) {
      switch (action.type) {
        case BATCH_ACTIONS:
          return action.actions.reduce(batchingReducer, state);
        default:
          return reducer(state, action);
      }
    }

    if (typeof initialState === "function" && typeof enhancer === "undefined") {
      enhancer = initialState;
      initialState = undefined;
    }

    return next(batchingReducer, initialState, enhancer);
  };
}

// Provide the store factory for test code so that each test is working with
// its own instance.
module.exports.configureStore = configureStore;