/*
 * budgets.js
 * Copyright (c) 2023 james@firefly-iii.org
 *
 * This file is part of Firefly III (https://github.com/firefly-iii).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
import {getVariable} from "../../store/get-variable.js";
import Dashboard from "../../api/v2/chart/budget/dashboard.js";
import ApexCharts from "apexcharts";

export default () => ({
    loadingChart: false,
    chart: null,
    autoConversion: false,
    loadChart() {
        if (this.loadingChart) {
            return;
        }
        // load chart data
        this.loadingChart = true;
        const dashboard = new Dashboard();
        dashboard.dashboard(new Date(window.store.get('start')), new Date(window.store.get('end')), null).then((response) => {
            console.log(response.data);

            let options = {
                legend: {show: false},
                series: [{
                    name: 'Spent',
                    data: []
                }, {
                    name: 'Left',
                    data: []
                }, {
                    name: 'Overspent',
                    data: []
                }],
                chart: {
                    type: 'bar',
                    height: 400,
                    stacked: true,
                    toolbar: {tools: {zoom: false, download: false, pan: false}},
                    zoom: {
                        enabled: true
                    }
                },
                responsive: [{
                    breakpoint: 480,
                    options: {
                        legend: {
                            position: 'bottom',
                            offsetX: -10,
                            offsetY: 0
                        }
                    }
                }],
                plotOptions: {
                    bar: {
                        horizontal: false,
                        borderRadius: 10,
                        dataLabels: {
                            total: {
                                enabled: true,
                                style: {
                                    fontSize: '13px',
                                    fontWeight: 900
                                }
                            }
                        }
                    },
                },
                xaxis: {
                    categories: []
                },
                fill: {
                    opacity: 0.8
                }
            };


            for (const i in response.data) {
                if (response.data.hasOwnProperty(i)) {
                    let current = response.data[i];
                    // convert to EUR yes no?
                    let label = current.label + ' (' + current.currency_code + ')';
                    options.xaxis.categories.push(label);
                    console.log(current);
                    if (this.autoConversion) {
                        // series 0: spent
                        options.series[0].data.push(parseFloat(current.native_entries.spent) * -1);
                        // series 1: left
                        options.series[1].data.push(parseFloat(current.native_entries.left));
                        // series 2: overspent
                        options.series[2].data.push(parseFloat(current.native_entries.overspent));
                    }
                    if (!this.autoConversion) {
                        // series 0: spent
                        options.series[0].data.push(parseFloat(current.entries.spent) * -1);
                        // series 1: left
                        options.series[1].data.push(parseFloat(current.entries.left));
                        // series 2: overspent
                        options.series[2].data.push(parseFloat(current.entries.overspent));
                    }

                }
            }


            if (null !== this.chart) {
                // chart already in place, refresh:
                this.chart.updateOptions(options);
            }
            if (null === this.chart) {
                this.chart = new ApexCharts(document.querySelector("#budget-chart"), options);
                this.chart.render();
            }
            this.loadingChart = false;
        });


    },
    init() {
        console.log('init budgets');
        Promise.all([getVariable('autoConversion', false),]).then((values) => {
            this.autoConversion = values[0];
            console.log('here we are, budgets.');
            this.loadChart();
        });
        window.store.observe('end', () => {
            this.loadChart();
        });
    },

});