/* 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/>. */

// @flow

/**
 * Quick Open reducer
 * @module reducers/quick-open
 */

import makeRecord from "../utils/makeRecord";
import { parseQuickOpenQuery } from "../utils/quick-open";
import type { Action } from "../actions/types";
import type { Record } from "../utils/makeRecord";

export type QuickOpenType = "sources" | "functions" | "goto" | "gotoSource";

export type QuickOpenState = {
  enabled: boolean,
  query: string,
  searchType: QuickOpenType
};

export const createQuickOpenState: () => Record<QuickOpenState> = makeRecord({
  enabled: false,
  query: "",
  searchType: "sources"
});

export default function update(
  state: Record<QuickOpenState> = createQuickOpenState(),
  action: Action
): Record<QuickOpenState> {
  switch (action.type) {
    case "OPEN_QUICK_OPEN":
      if (action.query != null) {
        return state.merge({
          enabled: true,
          query: action.query,
          searchType: parseQuickOpenQuery(action.query)
        });
      }
      return state.set("enabled", true);
    case "CLOSE_QUICK_OPEN":
      return createQuickOpenState();
    case "SET_QUICK_OPEN_QUERY":
      return state.merge({
        query: action.query,
        searchType: parseQuickOpenQuery(action.query)
      });
    default:
      return state;
  }
}

type OuterState = {
  quickOpen: Record<QuickOpenState>
};

export function getQuickOpenEnabled(state: OuterState): boolean {
  return state.quickOpen.get("enabled");
}

export function getQuickOpenQuery(state: OuterState) {
  return state.quickOpen.get("query");
}

export function getQuickOpenType(state: OuterState): QuickOpenType {
  return state.quickOpen.get("searchType");
}