import update from 'immutability-helper';

import { IReducerAction } from 'model/common.model';
import {
  RECEIVE_ACCESSION,
  RECEIVE_ACCESSION_OVERVIEW,
  APPEND_ACCESSIONS,
  RECEIVE_ACCESSION_MAPINFO,
  RECEIVE_ACCESSION_AUDIT_LOG,
  RECEIVE_TILE_LAYER, APPEND_ACCESSIONS_WITH_SUGGESTIONS,
} from 'accessions/constants';

import FilteredPage from 'model/FilteredPage';
import Accession from 'model/accession/Accession';
import AccessionMapInfo from 'model/accession/AccessionMapInfo';
import AccessionOverview from 'model/accession/AccessionOverview';
import AccessionAuditLog from 'model/accession/AccessionAuditLog';
import MapLayer, { AVAILABLE_LAYERS } from 'model/genesys/MapTileLayer';
import ApiCall from 'model/ApiCall';

const INITIAL_STATE: {
  accession: ApiCall<Accession>;
  auditLog: ApiCall<AccessionAuditLog>,
  paged: ApiCall<FilteredPage<Accession>>;
  suggestions: any;
  overview: ApiCall<AccessionOverview>;
  mapInfo: ApiCall<AccessionMapInfo>;
  mapLayers: MapLayer[]
} = {
  accession: null,
  auditLog: null,
  paged: null,
  suggestions: null,
  overview: null,
  mapInfo: null,
  mapLayers: AVAILABLE_LAYERS,
};

function publicAccessions(state = INITIAL_STATE, action: IReducerAction) {

  switch (action.type) {

    case RECEIVE_ACCESSION: {
      const {apiCall} = action.payload;
      const receivedIndex = state.paged && apiCall.data ? state.paged.data.content.findIndex((item) => item.uuid === apiCall.data.uuid) : -1;

      if (receivedIndex !== -1) {
        return update(state, {
          accession: { $set: apiCall },
          auditLog: {$set: null},
          paged: {
            data: {
              content: {
                [receivedIndex]: {$set: apiCall.data},
              },
            },
          },
        });
      } else {
        return update(state, {
          accession: { $set: apiCall},
          auditLog: {$set: null},
        });
      }
    }

    case RECEIVE_ACCESSION_AUDIT_LOG: {
      const {apiCall} = action.payload;
      return update(state, {
        auditLog: { $set: apiCall },
      });
    }

    case RECEIVE_ACCESSION_OVERVIEW: {
      const { apiCall: { loading, error, timestamp, data } } = action.payload;
      return update(state, {
        overview: { $set: {
            loading,
            error,
            timestamp,
            data: data !== undefined ? data : state.overview && state.overview.data,
          } },
        // paged: { $set: null },
        // mapInfo: { $set: null },
      });
    }

    case APPEND_ACCESSIONS: {
      const { apiCall: { loading, error, timestamp, data } } = action.payload;
      return update(state, {
          paged: { $set: {
            loading,
            error,
            timestamp,
            data: FilteredPage.merge(state.paged && state.paged.data, data),
          } },
          // mapInfo: { $set: null },
          // overview: { $set: null },
        });
    }
    case APPEND_ACCESSIONS_WITH_SUGGESTIONS: {
      const {apiCall: {loading, error, timestamp, data}} = action.payload;
      return update(state, {
        paged: {
          $set: {
            loading,
            error,
            timestamp,
            data: FilteredPage.merge(state.paged && state.paged.data, data),
          },
        },
        suggestions: {$set: data ?  data.suggestions : state.suggestions},
        // mapInfo: { $set: null },
        // overview: { $set: null },
      });
    }

    case RECEIVE_ACCESSION_MAPINFO: {
      const { apiCall } = action.payload;
      apiCall.data = apiCall.loading && state.mapInfo ? state.mapInfo.data : apiCall.data;

      return update(state, {
        mapInfo: { $set: apiCall },
        // paged: {$set: null},
        // overview: {$set: null},
      });
    }
    case RECEIVE_TILE_LAYER: {
      const {tileLayer} = action.payload;
      const indexToUpdate = state.mapLayers.findIndex((layerItem) => layerItem.name === tileLayer.name);

      return update(state, {
        mapLayers: {
          [indexToUpdate]: {$set: tileLayer},
        },
      });
    }

    default:
      return state;
  }
}

export default publicAccessions;