import { List, Map } from 'immutable'; 
import { fetchListType, fetchType, saveType, removeType, editType, createRemove } from './funcTools/crud';
import { createRequestReducer, ROOT_KEY } from './funcTools/request';
import { array, request, success, failure, createListUpdater, mergeReducers } from './funcTools/tools';
import Filter from 'Types/filter';
import SavedFilter from 'Types/filter/savedFilter';
import { errors as errorsRoute, isRoute } from "App/routes";
import { fetchList as fetchSessionList } from './sessions';
import { fetchList as fetchErrorsList } from './errors';
import { FilterCategory, FilterKey, IssueType } from 'Types/filter/filterType';
import { filtersMap, liveFiltersMap, generateFilterOptions, generateLiveFilterOptions } from 'Types/filter/newFilter';
import { DURATION_FILTER  } from 'App/constants/storageKeys'

const ERRORS_ROUTE = errorsRoute();

const name = "search";
const idKey = "searchId";

const FETCH_LIST = fetchListType(name);
const FETCH_FILTER_SEARCH = fetchListType(`${name}/FILTER_SEARCH`);
const FETCH = fetchType(name);
const SAVE = saveType(name);
const EDIT = editType(name);
const EDIT_SAVED_SEARCH = editType(`${name}/SAVED_SEARCH`);
const REMOVE = removeType(name);
const ADD_FILTER = `${name}/ADD_FILTER`;
const APPLY_SAVED_SEARCH = `${name}/APPLY_SAVED_SEARCH`;
const CLEAR_SEARCH = `${name}/CLEAR_SEARCH`;
const UPDATE = `${name}/UPDATE`;
const APPLY = `${name}/APPLY`;
const SET_ALERT_METRIC_ID = `${name}/SET_ALERT_METRIC_ID`;
const UPDATE_CURRENT_PAGE = `${name}/UPDATE_CURRENT_PAGE`;
const SET_ACTIVE_TAB = `${name}/SET_ACTIVE_TAB`;
const SET_SCROLL_POSITION = `${name}/SET_SCROLL_POSITION`;

const REFRESH_FILTER_OPTIONS = 'filters/REFRESH_FILTER_OPTIONS';

function chartWrapper(chart = []) {
  return chart.map(point => ({ ...point, count: Math.max(point.count, 0) }));
}

const savedSearchIdKey = 'searchId'
const updateItemInList = createListUpdater(savedSearchIdKey);
const updateInstance = (state, instance) => state.getIn([ "savedSearch", savedSearchIdKey ]) === instance[savedSearchIdKey]
	? state.mergeIn([ "savedSearch" ], SavedFilter(instance))
	: state;

const initialState = Map({
  filterList: generateFilterOptions(filtersMap),
  filterListLive: generateFilterOptions(liveFiltersMap),
	list: List(),
  alertMetricId: null,
	instance: new Filter({ filters: [] }),
  savedSearch: new SavedFilter({}),
  filterSearchList: {},
  currentPage: 1,
  activeTab: {name: 'All', type: 'all' },
  scrollY: 0,
});

// Metric - Series - [] - filters
function reducer(state = initialState, action = {}) {
	switch (action.type) {
    case REFRESH_FILTER_OPTIONS:
      return state.set('filterList', generateFilterOptions(filtersMap))
                  .set('filterListLive', generateFilterOptions(liveFiltersMap));
    case EDIT:
      return state.mergeIn(['instance'], action.instance).set('currentPage', 1);
    case APPLY:
      return action.fromUrl 
        ? state.set('instance', Filter(action.filter))
        : state.mergeIn(['instance'], action.filter).set('currentPage', 1);
		case success(FETCH):
			return state.set("instance", action.data);
		case success(FETCH_LIST):
			const { data } = action;
			return state.set("list", List(data.map(SavedFilter)).sortBy(i => i.searchId));
    case success(FETCH_FILTER_SEARCH):
      const groupedList = action.data.reduce((acc, item) => {
        const { projectId, type, value } = item;
        const key = type;
        if (!acc[key]) {
          acc[key] = [];
        }
        acc[key].push({ projectId, value });
        return acc;
      }, {});
      return state.set('filterSearchList', groupedList);
    case APPLY_SAVED_SEARCH:
      return state.set('savedSearch', action.filter);
    case EDIT_SAVED_SEARCH:
      return state.mergeIn([ 'savedSearch' ], action.instance);
    case UPDATE_CURRENT_PAGE:
      return state.set('currentPage', action.page);
    case SET_ACTIVE_TAB:
      return state.set('activeTab', action.tab).set('currentPage', 1);
    case SET_SCROLL_POSITION:
      return state.set('scrollY', action.scrollPosition);
	}
	return state;
}

export default mergeReducers(
	reducer,
	createRequestReducer({
		[ ROOT_KEY ]: FETCH_LIST,
		fetch: FETCH,
    fetchFilterSearch: FETCH_FILTER_SEARCH
	}),
);

const checkValues = (key, value) => {
  if (key === FilterKey.DURATION) {
    return value[0] === '' || value[0] === null ? [0, value[1]] : value;
  }
  return value.filter(i => i !== '' && i !== null);
}

export const checkFilterValue = (value) => {
  return Array.isArray(value) ? (value.length === 0 ? [""] : value) : [value];
}

export const filterMap = ({category, value, key, operator, sourceOperator, source, custom, isEvent, filters, sort, order }) => ({
  value: checkValues(key, value),
  custom,
  type: category === FilterCategory.METADATA ? FilterKey.METADATA : key,
  operator,
  source: category === FilterCategory.METADATA ? key : source,
  sourceOperator,
  isEvent,
  filters: filters ? filters.map(filterMap) : [],
});

export const reduceThenFetchResource = actionCreator => (...args) => (dispatch, getState) => {
  dispatch(actionCreator(...args));
  const filter = getState().getIn([ 'search', 'instance']).toData();
  
  const activeTab = getState().getIn([ 'search', 'activeTab']);
  if (activeTab.type !== 'all' && activeTab.type !== 'bookmark') {
    const tmpFilter = filtersMap[FilterKey.ISSUE];
    tmpFilter.value = [activeTab.type]
    filter.filters = filter.filters.concat(tmpFilter)
  }

  if (activeTab.type === 'bookmark') {
    filter.bookmarked = true
  }

  filter.filters = filter.filters.map(filterMap);
  filter.limit = 10;
  filter.page = getState().getIn([ 'search', 'currentPage']);

  // duration filter from local storage
  if (!filter.filters.find(f => f.type === FilterKey.DURATION)) {
    const durationFilter = JSON.parse(localStorage.getItem(DURATION_FILTER) || '{"count": 0}');
    let durationValue = parseInt(durationFilter.count)
    if (durationValue > 0) {
      const value = [0];
      durationValue = durationFilter.countType === 'min' ? durationValue * 60 * 1000 : durationValue * 1000;
      if (durationFilter.operator === '<') {
        value[0] = durationValue;
      } else if (durationFilter.operator === '>') {
        value[1] = durationValue;
      }
      
      filter.filters = filter.filters.concat({
        type: FilterKey.DURATION,
        operator: 'is',
        value,
      });
    }
  }

  return isRoute(ERRORS_ROUTE, window.location.pathname)
    ? dispatch(fetchErrorsList(filter))
    : dispatch(fetchSessionList(filter));
};

export const edit = reduceThenFetchResource((instance) => ({
    type: EDIT,
    instance,
}));

export const setActiveTab = reduceThenFetchResource((tab) => ({
  type: SET_ACTIVE_TAB,
  tab
}));

export const remove = (id) => (dispatch, getState) => {
  return dispatch({
    types: REMOVE.array,
    call: client => client.delete(`/saved_search/${id}`),
    id,
  }).then(() => {
    dispatch(applySavedSearch(new SavedFilter({})));
    dispatch(fetchList());
  });
};

// export const remove = createRemove(name, (id) => `/saved_search/${id}`);

export const applyFilter = reduceThenFetchResource((filter, fromUrl=false) => ({
  type: APPLY,
  filter,
  fromUrl,
}));

export const updateCurrentPage = reduceThenFetchResource((page) => ({
    type: UPDATE_CURRENT_PAGE,
    page,
}));

export const applySavedSearch = (filter) => (dispatch, getState) => {
  dispatch(edit({ filters: filter ? filter.filter.filters : [] }));
  return dispatch({
    type: APPLY_SAVED_SEARCH,
    filter,
  })
};

export const fetchSessions = (filter) => (dispatch, getState) => {
  const _filter = filter ? filter : getState().getIn([ 'search', 'instance']);
  return dispatch(applyFilter(_filter));
};

export const updateSeries = (index, series) => ({
  type: UPDATE,
  index,
  series,
});

export function fetch(id) {
	return {
		id,
		types: array(FETCH),
		call: c => c.get(`/errors/${id}`),
	}
}

export const save = (id) => (dispatch, getState) => {
  const filter = getState().getIn([ 'search', 'instance']).toData();
  filter.filters = filter.filters.map(filterMap);
  const isNew = !id;

  const instance = getState().getIn([ 'search', 'savedSearch']).toData();
  return dispatch({
    types: SAVE.array,
    call: client => client.post(isNew ? '/saved_search' : `/saved_search/${id}`, { ...instance, filter })
  }).then(() => {
    dispatch(fetchList()).then(() => {
      if (isNew) {
        const lastSavedSearch = getState().getIn([ 'search', 'list']).last();
        dispatch(applySavedSearch(lastSavedSearch));
      }
    });
  });
}

export function fetchList() {
  return {
    types: array(FETCH_LIST),
    call: client => client.get(`/saved_search`),
  };
}

export function setAlertMetricId(id) {
  return {
    type: SET_ALERT_METRIC_ID,
    id,
  };
}

export function fetchFilterSearch(params) {
  return {
    types: FETCH_FILTER_SEARCH.array,
    call: client => client.get('/events/search', params),
    params,
  };
}

export const clearSearch = () => (dispatch, getState) => {
  dispatch(applySavedSearch(new SavedFilter({})));
  dispatch(edit(new Filter({ filters: [] })));
  return dispatch({
    type: CLEAR_SEARCH,
  });
}

export const hasFilterApplied = (filters, filter) => {
  return !filter.isEvent && filters.some(f => f.key === filter.key);
}

export const addFilter = (filter) => (dispatch, getState) => {
  filter.value = checkFilterValue(filter.value);
  filter.filters = filter.filters ? filter.filters.map(subFilter => ({
    ...subFilter,
    value: checkFilterValue(subFilter.value),
  })) : null;
  const instance = getState().getIn([ 'search', 'instance']);

  if (hasFilterApplied(instance.filters, filter)) {
    
  } else {
    const filters = instance.filters.push(filter);
    return dispatch(edit(instance.set('filters', filters)));
  }
}

export const addFilterByKeyAndValue = (key, value, operator = undefined) => (dispatch, getState) => {
  let defaultFilter = filtersMap[key];
  defaultFilter.value = value;
  if (operator) {
    defaultFilter.operator = operator;
  }
  dispatch(addFilter(defaultFilter));
}

export const editSavedSearch = instance => {
  return {
    type: EDIT_SAVED_SEARCH,
    instance,
  }
};

export const refreshFilterOptions = () => {
  return {
    type: REFRESH_FILTER_OPTIONS
  }
}

export const setScrollPosition = (scrollPosition) => {
  return {
    type: SET_SCROLL_POSITION,
    scrollPosition,
  }
}