const axios = require("axios");
import { mapUtil } from "@/assets/js/map-util.js";

axios.defaults.headers.common['X-CSRFToken'] = (name => {
  var re = new RegExp(name + "=([^;]+)");
  var value = re.exec(document.cookie);
  return (value != null) ? unescape(value[1]) : null;
})('csrftoken');


const map = {
  namespaced: true,
  state: {
    basemaps: null,
    basemapsToDelete: [],
    features: [],
    geojsonFeatures: null,
    layers: null,
  },
  mutations: {
    SET_LAYERS(state, layers) {
      state.layers = layers;
    },
    SET_GEOJSON_FEATURES(state, geojsonFeatures) {
      state.geojsonFeatures = geojsonFeatures;
    },
    SET_BASEMAPS(state, basemaps) {
      state.basemaps = basemaps;
    },
    CREATE_BASEMAP(state, id) {
      state.basemaps = [...state.basemaps, { id, title: '', layers: [], errors: [] }]
    },
    UPDATE_BASEMAPS(state, basemaps) {
      state.basemaps = basemaps;
    },
    UPDATE_BASEMAP(state, { title, id, layers, errors }) {
      const index = state.basemaps.findIndex((el) => el.id === id);
      if (index !== -1) {
        if (title) {
          state.basemaps[index].title = title
        }
        if (layers) {
          state.basemaps[index].layers = layers
        }
        if (errors) {
          state.basemaps[index].errors = errors
        }
      }
    },
    DELETE_BASEMAP(state, basemapId) {
      state.basemaps = state.basemaps.filter(el => el.id !== basemapId);
      state.basemapsToDelete.push(basemapId);
    },
    REMOVE_BASEMAP_ID_TO_DELETE(state, basemapId) {
      state.basemapsToDelete = state.basemapsToDelete.filter(el => el !== basemapId);
    },
    REPLACE_BASEMAP_LAYERS(state, { basemapId, layers }) {
      const index = state.basemaps.findIndex((el) => el.id === basemapId);
      if (index !== -1) {
        state.basemaps[index].layers = layers;
      }
    },
    DELETE_BASEMAP_LAYER(state, { basemapId, layerId }) {
      const index = state.basemaps.findIndex((el) => el.id === basemapId);
      if (index !== -1) {
        state.basemaps[index].layers = state.basemaps[index].layers.filter((el) => el.dataKey !== layerId);
      }
    },
    UPDATE_BASEMAP_LAYER(state, { basemapId, layerId, layer }) {
      const index = state.basemaps.findIndex((el) => el.id === basemapId);
      if (index !== -1) {
        state.basemaps[index].layers = state.basemaps[index].layers.map(
          (el) => el.dataKey === layerId ? layer : el
        );
      }
    },
  },

  getters: {
    basemapMaxId: (state) => state.basemaps.reduce((acc, curr) => {
      if (curr.id > acc) {
        return curr.id;
      } else {
        return acc;
      }
    }, 0)
  },

  actions: {
    GET_LAYERS({ commit }) {
      return axios
        .get(`${this.state.configuration.VUE_APP_DJANGO_API_BASE}layers/`)
        .then((response) => (commit("SET_LAYERS", response.data)))
        .catch((error) => {
          throw error;
        });
    },

    GET_BASEMAPS({ commit }, project_slug) {
      return axios
        .get(`${this.state.configuration.VUE_APP_DJANGO_API_BASE}base-maps/?project__slug=${project_slug}`)
        .then((response) => {
          if (response.status === 200 && response.data) {
            commit("SET_BASEMAPS", response.data)
          }
          return response
        })
        .catch((error) => {
          throw error;
        });
    },

    INITIATE_MAP({ state, rootGetters }) {
      const project = rootGetters.project
      let mapDefaultViewCenter = [46, 2]; // defaultMapView.center;
      let mapDefaultViewZoom = 5; // defaultMapView.zoom;
      mapUtil.createMap({
        mapDefaultViewCenter,
        mapDefaultViewZoom,
      });

      // Load the layers.
      // - if one basemap exists, check in the localstorage if one active basemap is set
      // - if no current active basemap, get the first index
      // - if not, load the default map and service options

      // todo : create endpoints to get : 'baseMaps' ,'layers' ,'serviceMap' ,'optionsMap' 
      let layersToLoad = null;
      if (state.baseMaps && state.baseMaps.length > 0) {
        // Use active one if exists, otherwise index 0 (first basemap in the list)
        const mapOptions =
          JSON.parse(localStorage.getItem("geocontrib-map-options")) || {};
        const basemapIndex =
          mapOptions &&
            mapOptions[project] &&
            mapOptions[project]["current-basemap-index"]
            ? mapOptions[project]["current-basemap-index"]
            : 0;
        layersToLoad = state.baseMaps[basemapIndex].layers;
        layersToLoad.forEach((layerToLoad) => {
          state.layers.forEach((layer) => {
            if (layer.id === layerToLoad.id) {
              layerToLoad = Object.assign(layerToLoad, layer);
            }
          });
        });
        layersToLoad.reverse();
      }
      mapUtil.addLayers(layersToLoad, this.state.configuration.DEFAULT_BASE_MAP.SERVICE, this.state.configuration.DEFAULT_BASE_MAP.OPTIONS);

      // Remove multiple interactions with the map
      //mapUtil.getMap().dragging.disable();
      mapUtil.getMap().doubleClickZoom.disable();
      mapUtil.getMap().scrollWheelZoom.disable();

    },

    async SAVE_BASEMAPS({ state, rootState, dispatch }, newBasemapIds) {
      const DJANGO_API_BASE = this.state.configuration.VUE_APP_DJANGO_API_BASE;
      function postOrPut(basemap) {
        basemap["project"] = rootState.project_slug
        if (newBasemapIds.includes(basemap.id)) {
          return axios
            .post(`${DJANGO_API_BASE}base-maps/`, basemap)
            .then((response) => response)
            .catch((error) => {
              console.error(error);
              return error
            });
        } else {
          return axios
            .put(`${DJANGO_API_BASE}base-maps/${basemap.id}/`, basemap)
            .then((response) => response)
            .catch((error) => {
              console.error(error);
              return error
            });
        }
      }

      function deleteBMap(basemapId) {
        //* delete in the backend the basemaps that was rewoved from the front
        return dispatch("DELETE_BASEMAP", basemapId)
          .then((response) => response);
      }

      const promisesResult = await Promise.all(
        [...state.basemaps.map((basemap) => postOrPut(basemap)), ...state.basemapsToDelete.map((basemapId) => deleteBMap(basemapId))]

      );
      state.basemapsToDelete = []
      return promisesResult
    },

    DELETE_BASEMAP({ commit }, basemapId) {
      let url = `${this.state.configuration.VUE_APP_DJANGO_API_BASE}base-maps/` + basemapId
      return axios
        .delete(url)
        .then((response) => {
          if (response && response.status === 204) {
            commit("REMOVE_BASEMAP_ID_TO_DELETE", basemapId)
            return response
          }
        })
        .catch((error) => {
          console.error(error);
          return error
        });
    }
  },
}
export default map