'use strict';
const fs = require('fs');
const vm = require('vm');
const assert = require('assert/strict');
const source = fs.readFileSync(__dirname + '/../assets/metrics.js', 'utf8');
const points = [{x: 1700000000000, y: 125000}, {x: 1700000060000, y: null}, {x: 1700000420000, y: 250000}];
const metrics = {
    load: {'1 min': points, '5 min': points, '15 min': points},
    memory: {Usada: [{x: 1700000420000, y: 4365361152}], Total: [{x: 1700000420000, y: 8589934592}]},
    memoryPercent: [{x: 1700000420000, y: 50.81949234008789}],
    network: {RX: points, TX: points}
};
let assertions = 0;
function check(condition) { assert.ok(condition); assertions++; }
function run({version = '4.4.8', noChart = false, failLoad = false, absent = false, throwChart = false} = {}) {
    const configs = [];
    const cards = ['load','memory','network'].map(kind => ({
        dataset: {chart: kind}, summary: {textContent: ''}, canvas: {parentElement: {hidden: false}},
        querySelector(selector) { return selector === 'canvas' ? this.canvas : this.summary; }
    }));
    const data = JSON.parse(JSON.stringify(metrics));
    if (absent) data.network = {RX: [], TX: []};
    const root = {dataset: {metrics: JSON.stringify(data)}, querySelectorAll: () => cards};
    function FakeChart(canvas, config) { if (throwChart) throw Error('fixture'); configs.push(config); }
    FakeChart.version = version;
    let loaded = 0;
    const window = noChart ? {} : {Chart: FakeChart};
    const document = {
        readyState: 'complete', querySelectorAll: () => [root], createElement: () => ({}),
        head: {appendChild(script) {
            loaded++;
            check(script.src === 'modules/servers/vpsmanager/assets/chart-4.4.8.scoped.js');
            if (failLoad) script.onerror();
            else { window.O6HVpsChart = FakeChart; script.onload(); }
        }}
    };
    vm.runInNewContext(source, {window, document});
    return {configs, cards, loaded};
}
const r = run();
check(r.configs.length === 3 && r.loaded === 0);
const network = r.configs[2];
check(network.data.datasets[0].data[0].y === 1000000); // Exactly one bytes/s -> bits/s conversion.
check(network.data.datasets[0].data[1].y === null);
check(network.data.datasets[0].data[2].x === 1700000420000);
check(network.data.datasets[0].spanGaps === false);
check(network.options.scales.x.type === 'linear');
check(network.options.scales.y.ticks.callback(1000000) === '1 Mbit/s');
check(network.options.scales.y.ticks.callback(1000) === '1 Kbit/s');
check(network.options.scales.y.ticks.callback(1) === '1 bit/s');
check(network.options.scales.y.ticks.callback(1000000000) === '1 Gbit/s');
check(r.configs[0].options.scales.y.max === undefined); // Load is not CPU percent.
check(r.configs[1].options.scales.y.ticks.callback(8589934592) === '8 GiB');
check(r.cards[1].summary.textContent.includes('50.8 %'));
check(r.cards[1].summary.textContent.includes('8 GiB'));
check(run({version: '2.9.4'}).loaded === 1);
check(run({noChart: true}).configs.length === 3);
check(run({noChart: true, failLoad: true}).cards.every(c => c.canvas.parentElement.hidden));
const partial = run({absent: true});
check(partial.configs.length === 2 && partial.cards[2].summary.textContent === 'Las métricas no están disponibles temporalmente.');
check(run({throwChart: true}).cards.every(c => c.canvas.parentElement.hidden));
// Local bundle must not overwrite a WHMCS template's global Chart.
const prior = {version: '2.9.4'};
const context = {window: {Chart: prior}, console};
vm.runInNewContext(fs.readFileSync(__dirname + '/../assets/chart-4.4.8.scoped.js', 'utf8'), context);
check(context.window.Chart === prior);
check(context.window.O6HVpsChart.version === '4.4.8');
console.log(`PASS: ${assertions} frontend assertions.`);