import axios from "axios";
import { ApiQueryFilters } from "../data-contracts/ApiQueryFilter";


export class DataService{ 

    getObjectTables(filters: ApiQueryFilters){
        let token: string = this.getTokenFromStorage();

		var apiURL = 'http://localhost:9996/api/ObjectTableViews/getbyfilters?';
		apiURL = this.ConcatFiltersToURL(filters, apiURL);
        return axios.get(apiURL, { headers: { 'Content-Type': 'application/json', 'Token': token } });
    }

    getObjectFields(filters: ApiQueryFilters) {
        
        let token: string = this.getTokenFromStorage();

		var apiURL = 'http://localhost:9996/api/ObjectFieldViews/getbyfilters?';
		apiURL = this.ConcatFiltersToURL(filters, apiURL);

        return axios.get(apiURL, { headers: { 'Content-Type': 'application/json', 'Token': token } });
    }

    getDataByFilters(filters: ApiQueryFilters,tableName: string) {
        
        let token: string = this.getTokenFromStorage();

		var apiURL = `http://localhost:9996/api/${tableName}Views/getbyfilters?`;
		apiURL = this.ConcatFiltersToURL(filters, apiURL);

        return axios.get(apiURL, { headers: { 'Content-Type': 'application/json', 'Token': token } });
    }

    private ConcatFiltersToURL(filters: ApiQueryFilters, urlparameters: string)
    {
        var mykeys = Object.keys(filters);
        var addtionalFiltersValues: string | null = null;

        for (var i in mykeys) {
            var propName = mykeys[i];
            var propValue = filters[propName];
            var ignoreFilter = ((propName.indexOf("Operator") > 0 && propValue == "Equals") || propName == "AdditionalFilters");

            if (urlparameters != "?") {
                urlparameters = urlparameters.concat('&');
            }

            if (!ignoreFilter) {
                propValue = propValue ? encodeURIComponent(propValue) : '';
                urlparameters = urlparameters.concat(propName.concat('=').concat(propValue));
            }

            if (propName == "AdditionalFilters" && propValue.length > 0) {
                addtionalFiltersValues = JSON.stringify(propValue);
            }
        }

        if (addtionalFiltersValues) {
            urlparameters = urlparameters.concat("&AdditionalFilters=").concat(addtionalFiltersValues);
        }
        return urlparameters;
    }

    getTokenFromStorage(){
        return window.localStorage.getItem("token") || '';
    }
}