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1 import { addHours, endOfToday, endOfTomorrow, format, isAfter, isBefore, isToday, isTomorrow, isWithinInterval, parseISO, startOfToday } from "date-fns";
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2 import { css, html, LitElement, TemplateResult } from "lit";
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3 import { customElement, property } from "lit/decorators.js";
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4 import { sortBy } from "lodash";
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5 import { DataFactory, NamedNode, Parser, Quad_Predicate, Quad_Subject, Store, Term } from "n3";
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6 import { hideFeeds, hideTitles } from "./private";
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7 import { shared } from "./shared";
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8 const { namedNode } = DataFactory;
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9 export { WeekGuide } from "./WeekGuide";
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10 const EV = "http://bigasterisk.com/event#";
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11 const RDF = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
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12
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4
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13
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14 // Function to send a POST request
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15 function sendPostRequest(data) {
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16 fetch('https://example.com/api', {
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17 method: 'POST',
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18 headers: {
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19 'Content-Type': 'application/json',
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20 },
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21 body: JSON.stringify(data),
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22 })
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23 .then(response => {
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24 if (!response.ok) {
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25 throw new Error('Network response was not ok');
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26 }
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27 return response.json();
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28 })
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29 .then(data => {
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30 console.log('POST request successful');
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31 // Handle response data if needed
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32 })
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33 .catch(error => {
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34 console.error('There was a problem with the POST request:', error);
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35 });
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36 }
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37
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38 // Callback function to handle DOM changes
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39 function handleDomChanges(mutationsList, observer) {
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40 // Send a POST request whenever the DOM changes
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41 sendPostRequest({ domChanges: mutationsList });
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42 }
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43
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44 // Create a MutationObserver instance
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45 const observer = new MutationObserver(handleDomChanges);
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46
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47 // Start observing the DOM for changes
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48 observer.observe(document.body, { subtree: true, childList: true, attributes: true });
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49
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50
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2
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51 function getLiteral(store: Store, graph: Term, subj: Quad_Subject, pred: Quad_Predicate, missing: string | null): string {
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52 let out = null;
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53 store.getObjects(subj, pred, graph).forEach((attr) => {
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54 out = attr.value;
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55 });
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56 if (!out) {
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57 if (missing === null) {
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58 throw new Error();
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59 }
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60 return missing;
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61 }
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62 return out;
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63 }
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64
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65 class DisplayEvent {
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66 constructor(private store: Store, private graph: Term, public uri: Quad_Subject) {}
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67 get title(): string {
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68 return getLiteral(this.store, this.graph, this.uri, namedNode(EV + "title"), "(unnamed)");
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69 }
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70 get start(): string {
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71 return getLiteral(this.store, this.graph, this.uri, namedNode(EV + "start"), null);
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72 }
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73 get feed(): NamedNode {
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74 return namedNode(getLiteral(this.store, this.graph, this.uri, namedNode(EV + "feed"), null));
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75 }
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76 shortDate(): TemplateResult {
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77 const t = parseISO(this.start);
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78 return html`<span class="d">${format(t, "EEE, MMM d,")}</span> <span class="t">${format(t, "HH:mm")}</span>`;
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79 }
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80 show(): boolean {
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81 const now = new Date();
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82 const t = parseISO(this.start);
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83
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84 const start = startOfToday();
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85 let end = endOfToday();
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86 if (isAfter(now, addHours(startOfToday(), 18))) {
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87 end = endOfTomorrow();
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88 }
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89
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90 return isWithinInterval(t, { start, end }) && !hideTitles.has(this.title) && !hideFeeds.has(this.feed.value);
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91 }
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92 toHtml(): TemplateResult {
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93 return html`
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94 <li>
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95 <span class="date">${this.shortDate()}</span> ${this.title}
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96 <!--${this.feed}-->
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97 </li>
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98 `;
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99 }
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100 }
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101
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102 @customElement("fd-upcoming-events")
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103 export class UpcomingEvents extends LitElement {
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104 @property() evs: DisplayEvent[];
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105 constructor() {
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106 super();
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107 this.evs = [];
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108 this.load();
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109 setInterval(this.load.bind(this), 5 * 60 * 1000);
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110 }
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111
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112 async load() {
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113 const store = new Store();
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114 const r = await fetch("/gcalendarwatch/graph/calendar/upcoming",
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115
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116 {
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117 method: 'GET',
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118 headers: {
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119 Accept: 'application/json',
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120 'X-Pomerium-Authorization': document.cookie.substring(
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121 document.cookie.indexOf('=') + 1,
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122 ),
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123 },
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124 }
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125
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126 );
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127 const n3txt = await r.text();
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128 const parser = new Parser({ format: "application/trig" });
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129 parser.parse(n3txt, (error, quad, prefixes) => {
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130 if (quad) {
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131 store.addQuad(quad);
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132 } else {
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133 const graph = namedNode(EV + "gcalendar");
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134 this.evs = [];
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135 store.getSubjects(namedNode(RDF + "type"), namedNode(EV + "Event"), graph).forEach((ev: Quad_Subject) => {
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136 const de = new DisplayEvent(store, graph, ev);
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137 if (de.show()) {
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138 this.evs = [...this.evs, de];
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139 }
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140 });
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141 this.evs = sortBy(this.evs, "start");
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142 }
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143 });
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144 }
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145 static styles = [
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146 shared,
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147 css`
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148 ol {
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149 list-style-type: circle;
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150 font-size: 16px;
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151 background: #cd66bb2e;
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152 padding: 9px;
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153 width: fit-content;
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154 position: relative;
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155 top: -21px;
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156 border-radius: 14px;
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157 }
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158 span.d {
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159 opacity: 0.5;
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160 }
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161 span.t {
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162 color: #50fa7b;
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163 }
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164 `,
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165 ];
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166 render() {
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167 return html`
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168 <h1 data-text="Calendar">Calendar</h1>
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169 <ol>
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170 ${this.evs.map((d) => d.toHtml())}
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171 </ol>
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172 `;
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173 }
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174 }
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