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path: root/src/client/views/nodes/calendarBox/CalendarBox.tsx
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import * as React from 'react';
import { observer } from "mobx-react";
import { Doc } from "../../../../fields/Doc";
import { ViewBoxAnnotatableComponent, ViewBoxAnnotatableProps, ViewBoxBaseComponent } from '../../DocComponent';
import { FieldView, FieldViewProps } from '../FieldView';
import { StrCast } from '../../../../fields/Types';
import { makeObservable } from 'mobx';
import { dateRangeStrToDates } from '../../../../Utils';
import { Calendar, EventClickArg, EventSourceInput } from '@fullcalendar/core'
import dayGridPlugin from '@fullcalendar/daygrid'
import multiMonthPlugin from '@fullcalendar/multimonth'
import { faListNumeric } from '@fortawesome/free-solid-svg-icons';

type CalendarView = 'month' | 'multi-month' | 'week';

@observer
export class CalendarBox extends ViewBoxBaseComponent<FieldViewProps>(){
    public static LayoutString(fieldKey: string = 'calendar') {
        return FieldView.LayoutString(CalendarBox, fieldKey);
    }

    componentDidMount(): void {
        
    }

    componentWillUnmount(): void {
        
    }

    _calendarRef = React.createRef<HTMLElement>()

    get dateRangeStr (){
        return StrCast(this.Document.date_range);
    }

    // Choose a calendar view based on the date range 
    get calendarViewType (): CalendarView {
        const [fromDate, toDate] = dateRangeStrToDates(this.dateRangeStr);

        if (fromDate.getFullYear() !== toDate.getFullYear() || fromDate.getMonth() !== toDate.getMonth()) return 'multi-month';

        if (Math.abs(fromDate.getDay() - toDate.getDay()) > 7) return 'month';
        return 'week';
    }

    get calendarStartDate () {
        return this.dateRangeStr.split("|")[0];
    }

    get calendarToDate () {
        return this.dateRangeStr.split("|")[1];
    }

    get childDocs (): Doc[] {
        return this.childDocs; // get all sub docs for a calendar
    }

    docBackgroundColor (type: string): string {
        // TODO: Return a different color based on the event type
        return 'blue';
    }

    get calendarEvents (): EventSourceInput | undefined {
        if (this.childDocs.length === 0) return undefined;
        return this.childDocs.map((doc, idx) => {
            const docTitle = StrCast(doc.title);
            const docDateRange = StrCast(doc.date_range);
            const [startDate, endDate] = dateRangeStrToDates(docDateRange);
            const docType = doc.type;
            const docDescription = doc.description ? StrCast(doc.description): "";

            return {
                title: docTitle,
                start: startDate,
                end: endDate,
                allDay: false,
                classNames:[StrCast(docType)], // will determine the style 
                editable: false, // subject to change in the future
                backgroundColor: this.docBackgroundColor(StrCast(doc.type)),
                color: 'white',
                extendedProps: {
                    description: docDescription
                },
                
            }

        })
    }

    handleEventClick = (arg: EventClickArg) => {
        // TODO: open popover with event description, option to open CalendarManager and change event date, delete event, etc.
    }

    calendarEl: HTMLElement = document.getElementById('calendar-box-v1')!;

    // https://fullcalendar.io
    get calendar() {
        return new Calendar(this.calendarEl, 
            {
                plugins: [this.calendarViewType === 'multi-month' ? multiMonthPlugin : dayGridPlugin],
                headerToolbar: {
                    left: 'prev,next today',
                    center: 'title',
                    right: 'dayGridMonth,timeGridWeek,timeGridDay,listWeek'
                },
                initialDate: this.calendarStartDate,
                navLinks: true,
                editable: false,
                displayEventTime: false,
                displayEventEnd: false,
                events: this.calendarEvents,
                eventClick: this.handleEventClick
            }
        )
        
    }


    constructor(props: any){
        super(props);
        makeObservable(this);
    }

    render(){
        return (
            <div className='calendar-box-conatiner'>
                <div id='calendar-box-v1'>

                </div>
            </div>  
        );
        
    }
}