mirror of
https://github.com/ConnectedHumber/Air-Quality-Web
synced 2024-11-14 05:13:00 +00:00
373 lines
13 KiB
JavaScript
373 lines
13 KiB
JavaScript
"use strict";
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// import CreateElement from 'dom-create-element-query-selector';
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// We're using the git repo for now until an update is released, and rollup doesn't like that apparently
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import CreateElement from '../../node_modules/dom-create-element-query-selector/src/index.js';
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import moment from 'moment';
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// import Chart from 'chart.js';
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// Chart.js pollutes the global scope, but the main entry point is going to change soon in v2.8 - which should fix our issue here
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import * as Chart from '../../node_modules/chart.js/dist/chart.esm.js';
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import Config from './Config.mjs';
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import GetFromUrl from './Helpers/GetFromUrl.mjs';
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import GetContainingElement from './Helpers/GetContainingElement.mjs';
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import Postify from './Helpers/Postify.mjs';
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import { human_duration_unit, round_date_interval } from './Helpers/DateHelper.mjs';
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class DeviceReadingDisplay {
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constructor(in_config, in_device_id) {
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this.config = in_config;
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/** The ID of the device to display a graph for. @type {int} */
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this.device_id = in_device_id;
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/** The current reading type to display a graph for. @type {Object} */
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this.reading_type = null;
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// The number of points to display at a time.
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this.points_resolution = 50;
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let date = new Date();
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round_date_interval(date, Config.date_rounding_interval);
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this.start_time = moment(date).subtract(1, "days");
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this.end_time = moment(date);
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this.default_colours = {
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borderColor: "hsla(0, 0%, 50%, 1)",
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backgroundColor: "hsla(0, 0%, 65%, 0.5)"
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};
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this.reading_type_defs = {
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"PM10": {
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suggestedMin: 0,
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suggestedMax: 110,
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borderColor: "hsla(0, 82%, 56%, 1)",
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backgroundColor: "hsla(14, 94%, 71%, 0.57)"
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},
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"PM25": {
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suggestedMin: 0,
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suggestedMax: 75,
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borderColor: "hsla(33, 70%, 51%, 1)",
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backgroundColor: "hsla(28, 77%, 58%, 0.63)"
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},
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"temperature": {
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suggestedMin: 0,
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suggestedMax: 20,
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borderColor: "hsla(0, 77%, 45%, 1)",
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backgroundColor: "hsla(0, 61%, 58%, 0.59)"
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},
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"humidity": {
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suggestedMin: 0,
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suggestedMax: 100,
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borderColor: "hsla(184, 69%, 40%, 1)",
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backgroundColor: "hsla(188, 53%, 46%, 0.58)"
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},
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"pressure": {
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borderColor: "hsla(258, 67%, 40%, 1)",
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backgroundColor: "hsla(249, 56%, 40%, 0.66)"
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}
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};
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}
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async setup(default_reading_type) {
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// 1: Display window HTML
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// ----------------------------------------------------
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// Create the display element first, as we need it to be immediately available for inclusion in the popup window
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/** @type {HTMLElement} */
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this.display = CreateElement("div.chart-device-data.working",
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CreateElement("canvas.canvas-chart"),
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CreateElement("ul.reading-types.button-array"),
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CreateElement("ul.quick-time-selector.button-array",
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CreateElement("li", CreateElement("button[data-timelength=1h]", "1 hour")),
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CreateElement("li", CreateElement("button[data-timelength=6h]", "6 hours")),
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CreateElement("li", CreateElement("button[data-timelength=1d].selected", "1 day")),
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CreateElement("li", CreateElement("button[data-timelength=1w]", "1 week")),
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CreateElement("li", CreateElement("button[data-timelength=1M]", "1 month")),
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CreateElement("li", CreateElement("button[data-timelength=3M]", "3 months")),
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CreateElement("li", CreateElement("button[data-timelength=1y]", "1 year"))
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),
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CreateElement("ul.adv-time-selector.button-array",
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CreateElement("li", CreateElement("button.timeinterval.prev[title=Previous Time Interval]", "«")),
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CreateElement("li", CreateElement("input.time-start-date[type=date]")),
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CreateElement("li", CreateElement("input.time-start-time[type=time]")),
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CreateElement("li", "—"),
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CreateElement("li", CreateElement("input.time-end-date[type=date]")),
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CreateElement("li", CreateElement("input.time-end-time[type=time]")),
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CreateElement("li", CreateElement("button.timeinterval.next[title=Next Time Interval]", "»"))
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)
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);
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// 2: Measurement type buttons
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// ----------------------------------------------------
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this.reading_types = await this.fetch_reading_types();
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this.reading_type = this.reading_types.find((type) => type.short_descr == default_reading_type)
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|| this.reading_types[0] // Default to the 1st reading type if we can't find the default
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|| { short_descr: "NONE_PRESENT", friendly_text: "(none yet!)", id: -1, count: -1 }; // ...or a default object if there aren't any readings yet
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// Create the reading type buttons
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let reading_type_list = this.display.querySelector(".reading-types");
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for(let reading_type of this.reading_types) {
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let new_element = CreateElement("li",
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CreateElement("button", reading_type.friendly_text)
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);
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let button = new_element.querySelector("button");
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if(reading_type.id == this.reading_type.id)
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button.classList.add("selected");
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button.addEventListener("click", this.switch_graph_type_handler.bind(this));
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new_element.dataset.id = reading_type.id;
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reading_type_list.appendChild(new_element);
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}
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// 2.5: Advanced time picker
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// ----------------------------------------------------
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this.set_adv_timepicker_ui(this.start_time, this.end_time);
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// 3: Event listeners
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// ----------------------------------------------------
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this.display.querySelector(".quick-time-selector")
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.addEventListener("click", (this.timelength_button_click_handler).bind(this));
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this.display.querySelector(".timeinterval.prev")
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.addEventListener("click", this.timeinterval_button_click_handler.bind(this));
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this.display.querySelector(".timeinterval.next")
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.addEventListener("click", this.timeinterval_button_click_handler.bind(this));
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this.display.querySelectorAll(".adv-time-selector input").forEach(((el) => {
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el.addEventListener("input", this.adv_timepicker_ui_click_handler.bind(this));
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}).bind(this));
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// 4: Chart and ending tasks
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// ----------------------------------------------------
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// Setup the chart itself
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await this.setup_chart();
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this.display.classList.remove("working");
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}
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/**
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* Updates the advanced time picker UI with the specified start and end dates.
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* The supplied start & end datetimes should Moment.js instances.
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* @param {moment} start_time The start datetime to display.
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* @param {moment} end_time The end datetime to display.
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*/
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set_adv_timepicker_ui(start_time, end_time) {
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this.display.querySelector(".time-start-date").value = start_time.format("YYYY-MM-DD");
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this.display.querySelector(".time-start-time").value = start_time.format("HH:mm");
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this.display.querySelector(".time-end-date").value = end_time.format("YYYY-MM-DD");
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this.display.querySelector(".time-end-time").value = end_time.format("HH:mm");
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}
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/**
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* Handles events from advanced time picker UI elements.
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*/
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async adv_timepicker_ui_click_handler() {
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let el_start_date = this.display.querySelector("input.time-start-date"),
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el_start_time = this.display.querySelector("input.time-start-time"),
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el_end_date = this.display.querySelector("input.time-end-date"),
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el_end_time = this.display.querySelector("input.time-end-time");
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this.start_time = moment(`${el_start_date.value} ${el_start_time.value}`);
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this.end_time = moment(`${el_end_date.value} ${el_end_time.value}`);
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await this.update_chart();
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}
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async timeinterval_button_click_handler(event) {
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let diff_seconds = this.end_time.diff(this.start_time) / 1000;
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if(event.target.classList.contains("prev")) {
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this.start_time.subtract(diff_seconds, "seconds");
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this.end_time.subtract(diff_seconds, "seconds");
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}
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else if(event.target.classList.contains("next")) {
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this.start_time.add(diff_seconds, "seconds");
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this.end_time.add(diff_seconds, "seconds");
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}
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else {
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throw new Error("Error: Failed to adjust time interval, as we couldn't tell which direction to go in.");
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}
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this.set_adv_timepicker_ui(this.start_time, this.end_time);
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await this.update_chart();
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}
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async timelength_button_click_handler(event) {
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let timelength = event.target.dataset.timelength;
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if(typeof timelength == "undefined")
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return;
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let time_unit = timelength.replace(/[0-9]+/g, "");
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let time_length = timelength.replace(/[^0-9]+/g, "");
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this.start_time = moment().subtract(time_length, time_unit);
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this.end_time = moment();
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this.set_adv_timepicker_ui(this.start_time, this.end_time);
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let popup_container = GetContainingElement(event.target, "div");
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popup_container.classList.add("working");
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await this.update_chart();
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// Show the new button to be selected
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this.display.querySelectorAll(".quick-time-selector button").forEach((button) => button.classList.remove("selected"));
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event.target.classList.add("selected");
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popup_container.classList.remove("working");
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}
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async setup_chart() {
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this.chart = new Chart(this.display.querySelector("canvas").getContext("2d"), {
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type: "line",
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data: {
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// We need to define an initial dataset here because otherwise
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// Chart.js gets confused 'cause it has nothing to animate from
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// labels: [],
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datasets: []
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},
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options: {
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scales: {
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xAxes: [{
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type: "time",
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time: {
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format: "YYYY-MM-DD HH:mm",
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tooltipFormat: 'll HH:mm',
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},
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scaleLabel: {
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display: true,
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labelString: "Time"
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}
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}],
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yAxes: [{
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ticks: { },
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scaleLabel: {
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display: true,
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labelString: "Value"
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}
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}]
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}
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}
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});
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await this.update_chart();
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}
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async get_data() {
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// If there aren't any readings yet, then there's no point in requesting them
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if(this.reading_type.id == -1)
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return false;
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let new_data = null;
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// Dividing by 1000: ms -> s
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let average_seconds = (this.end_time.diff(this.start_time) / 1000) / this.points_resolution;
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console.info("Requesting data with start", this.start_time.toString(), ", end", this.end_time.toString(), ", average-seconds", average_seconds);
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try {
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new_data = JSON.parse(await GetFromUrl(`${this.config.api_root}?` + Postify({
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action: "device-data",
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"device-id": this.device_id,
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"reading-type": this.reading_type.short_descr,
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start: this.start_time.toISOString(),
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end: this.end_time.toISOString(),
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"average-seconds": average_seconds
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})));
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} catch(error) {
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// TODO: Display a nice error message here instead of an alert()
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// Wrap it in an Error instance if needed
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if(typeof error == "string")
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error = new Error(error.length == 0 ? "An unknown error has ocurred. It's probably on the server." : error);
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alert(error.message);
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console.error(error);
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return null;
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}
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console.log("[marker/popup/device-graph] Fetched data:", new_data);
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console.log("[marker/popup/device-graph] Point count:", new_data.length);
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return new_data.map((data_point) => { return {
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t: moment(data_point.datetime),
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y: Math.round(data_point.value*10000)/10000
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}});
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}
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async fetch_reading_types() {
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return JSON.parse(await GetFromUrl(`${this.config.api_root}?action=list-reading-types&device-id=${this.device_id}`));
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}
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async switch_graph_type_handler(event) {
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// Figure out what the new reading type is
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this.reading_type = this.reading_types.find((type) => type.id == event.target.parentNode.dataset.id);
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console.log("[marker/device-graph] Reading type is now", this.reading_type);
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let popup_container = GetContainingElement(event.target, "div");
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popup_container.classList.add("working");
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// Update the button list to highlight the newly-selected reading type, but only if we managed to update the chart successfully
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if(await this.update_chart()) {
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// Remove the selected class from the old one(s?)
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event.target.parentNode.parentNode.querySelectorAll(`button`)
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.forEach((next_button) => next_button.classList.remove("selected"));
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// Add the selected class to the new one
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event.target.classList.add("selected");
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}
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popup_container.classList.remove("working");
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}
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async update_chart() {
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this.chart.data.datasets.length = 0;
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// Get the Chart.js data object
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let new_data_obj = {
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label: this.reading_type.friendly_text,
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data: await this.get_data()
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};
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if(new_data_obj.data == null) return false;
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// Update the colour & suggested min/max values
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let def = this.reading_type_defs[this.reading_type.short_descr],
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y_axis = this.chart.options.scales.yAxes[0];
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if(typeof def !== "undefined") {
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new_data_obj.borderColor = def.borderColor;
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new_data_obj.backgroundColor = def.backgroundColor;
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}
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else {
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new_data_obj.borderColor = this.default_colours.borderColor;
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new_data_obj.backgroundColor = this.default_colours.backgroundColor;
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}
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if(typeof def !== "undefined" && typeof def.suggestedMin !== "undefined") {
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y_axis.ticks.suggestedMin = def.suggestedMin;
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y_axis.ticks.suggestedMax = def.suggestedMax;
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}
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else {
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delete y_axis.ticks.suggestedMin;
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delete y_axis.ticks.suggestedMax;
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}
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this.chart.data.datasets.push(new_data_obj);
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// Update the x axis labels
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// this.chart.data.labels = new_data_obj.data.map((point) => point.t);
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this.chart.options.scales.xAxes[0].time.unit = human_duration_unit(this.end_time.diff(this.start_time));
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console.log(`New unit: ${this.chart.options.scales.xAxes[0].time.unit}`);
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// Update the chart
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this.chart.update();
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return true;
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}
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}
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export default DeviceReadingDisplay;
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