2021-05-14 17:17:06 +03:00

342 lines
10 KiB
TypeScript

import { Component, Inject, OnDestroy, OnInit, ViewEncapsulation } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';
import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
import * as moment from 'moment';
import { Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
import { CalendarService } from 'app/modules/admin/apps/calendar/calendar.service';
import { CalendarWeekday } from 'app/modules/admin/apps/calendar/calendar.types';
@Component({
selector : 'calendar-recurrence',
templateUrl : './recurrence.component.html',
encapsulation: ViewEncapsulation.None
})
export class CalendarRecurrenceComponent implements OnInit, OnDestroy
{
nthWeekdayText: string;
recurrenceForm: FormGroup;
recurrenceFormValues: any;
weekdays: CalendarWeekday[];
private _unsubscribeAll: Subject<any> = new Subject<any>();
/**
* Constructor
*/
constructor(
@Inject(MAT_DIALOG_DATA) public data: any,
public matDialogRef: MatDialogRef<CalendarRecurrenceComponent>,
private _calendarService: CalendarService,
private _formBuilder: FormBuilder
)
{
}
// -----------------------------------------------------------------------------------------------------
// @ Lifecycle hooks
// -----------------------------------------------------------------------------------------------------
/**
* On init
*/
ngOnInit(): void
{
// Get weekdays
this._calendarService.weekdays$
.pipe(takeUntil(this._unsubscribeAll))
.subscribe((weekdays) => {
// Store the weekdays
this.weekdays = weekdays;
});
// Initialize
this._init();
// Create the recurrence form
this.recurrenceForm = this._formBuilder.group({
freq : [null],
interval: [null, Validators.required],
weekly : this._formBuilder.group({
byDay: [[]]
}),
monthly : this._formBuilder.group({
repeatOn : [null], // date | nthWeekday
date : [null],
nthWeekday: [null]
}),
end : this._formBuilder.group({
type : [null], // never | until | count
until: [null],
count: [null]
})
});
// Subscribe to 'freq' field value changes
this.recurrenceForm.get('freq').valueChanges.subscribe((value) => {
// Set the end values
this._setEndValues(value);
});
// Subscribe to 'weekly.byDay' field value changes
this.recurrenceForm.get('weekly.byDay').valueChanges.subscribe((value) => {
// Get the event's start date
const startDate = moment(this.data.event.start);
// If nothing is selected, select the original value from
// the event form to prevent an empty value on the field
if ( !value || !value.length )
{
// Get the day of event start date
const eventStartDay = startDate.format('dd').toUpperCase();
// Set the original value back without emitting a
// change event to prevent an infinite loop
this.recurrenceForm.get('weekly.byDay').setValue([eventStartDay], {emitEvent: false});
}
});
// Patch the form with the values
this.recurrenceForm.patchValue(this.recurrenceFormValues);
// Set end values for the first time
this._setEndValues(this.recurrenceForm.get('freq').value);
}
/**
* On destroy
*/
ngOnDestroy(): void
{
// Unsubscribe from all subscriptions
this._unsubscribeAll.next();
this._unsubscribeAll.complete();
}
// -----------------------------------------------------------------------------------------------------
// @ Public methods
// -----------------------------------------------------------------------------------------------------
/**
* Clear
*/
clear(): void
{
// Close the dialog
this.matDialogRef.close({recurrence: 'cleared'});
}
/**
* Done
*/
done(): void
{
// Get the recurrence form values
const recurrenceForm = this.recurrenceForm.value;
// Prepare the rule array and add the base rules
const ruleArr = ['FREQ=' + recurrenceForm.freq, 'INTERVAL=' + recurrenceForm.interval];
// If monthly on certain days...
if ( recurrenceForm.freq === 'MONTHLY' && recurrenceForm.monthly.repeatOn === 'nthWeekday' )
{
ruleArr.push('BYDAY=' + recurrenceForm.monthly.nthWeekday);
}
// If weekly...
if ( recurrenceForm.freq === 'WEEKLY' )
{
// If byDay is an array...
if ( Array.isArray(recurrenceForm.weekly.byDay) )
{
ruleArr.push('BYDAY=' + recurrenceForm.weekly.byDay.join(','));
}
// Otherwise
else
{
ruleArr.push('BYDAY=' + recurrenceForm.weekly.byDay);
}
}
// If one of the end options is selected...
if ( recurrenceForm.end.type === 'until' )
{
ruleArr.push('UNTIL=' + moment(recurrenceForm.end.until).endOf('day').utc().format('YYYYMMDD[T]HHmmss[Z]'));
}
if ( recurrenceForm.end.type === 'count' )
{
ruleArr.push('COUNT=' + recurrenceForm.end.count);
}
// Generate rule text
const ruleText = ruleArr.join(';');
// Close the dialog
this.matDialogRef.close({recurrence: ruleText});
}
// -----------------------------------------------------------------------------------------------------
// @ Private methods
// -----------------------------------------------------------------------------------------------------
/**
* Initialize
*
* @private
*/
private _init(): void
{
// Get the event's start date
const startDate = moment(this.data.event.start);
// Calculate the weekday
const weekday = moment(this.data.event.start).format('dd').toUpperCase();
// Calculate the nthWeekday
let nthWeekdayNo = 1;
while ( startDate.clone().isSame(startDate.clone().subtract(nthWeekdayNo, 'week'), 'month') )
{
nthWeekdayNo++;
}
const nthWeekday = nthWeekdayNo + weekday;
// Calculate the nthWeekday as text
const ordinalNumberSuffixes = {
1: 'st',
2: 'nd',
3: 'rd',
4: 'th',
5: 'th'
};
this.nthWeekdayText = nthWeekday.slice(0, 1) + ordinalNumberSuffixes[nthWeekday.slice(0, 1)] + ' ' +
this.weekdays.find(item => item.value === nthWeekday.slice(-2)).label;
// Set the defaults on recurrence form values
this.recurrenceFormValues = {
freq : 'DAILY',
interval: 1,
weekly : {
byDay: weekday
},
monthly : {
repeatOn : 'date',
date : moment(this.data.event.start).date(),
nthWeekday: nthWeekday
},
end : {
type : 'never',
until: null,
count: null
}
};
// If recurrence rule string is available on the
// event meaning that the is a recurring one...
if ( this.data.event.recurrence )
{
// Parse the rules
const parsedRules: any = {};
this.data.event.recurrence.split(';').forEach((rule) => {
parsedRules[rule.split('=')[0]] = rule.split('=')[1];
});
// Overwrite the recurrence form values
this.recurrenceFormValues.freq = parsedRules.FREQ;
this.recurrenceFormValues.interval = parsedRules.INTERVAL;
if ( parsedRules.FREQ === 'WEEKLY' )
{
this.recurrenceFormValues.weekly.byDay = parsedRules.BYDAY.split(',');
}
if ( parsedRules.FREQ === 'MONTHLY' )
{
this.recurrenceFormValues.monthly.repeatOn = parsedRules.BYDAY ? 'nthWeekday' : 'date';
}
this.recurrenceFormValues.end.type = parsedRules.UNTIL ? 'until' : (parsedRules.COUNT ? 'count' : 'never');
this.recurrenceFormValues.end.until = parsedRules.UNTIL || null;
this.recurrenceFormValues.end.count = parsedRules.COUNT || null;
}
}
/**
* Set the end value based on frequency
*
* @param freq
* @private
*/
private _setEndValues(freq: string): void
{
// Return if freq is not available
if ( !freq )
{
return;
}
// Get the event's start date
const startDate = moment(this.data.event.startDate);
// Get the end type
const endType = this.recurrenceForm.get('end.type').value;
// If until is not selected
if ( endType !== 'until' )
{
let until;
// Change the until's default value based on the frequency
if ( freq === 'DAILY' )
{
until = startDate.clone().add(1, 'month').toISOString();
}
if ( freq === 'WEEKLY' )
{
until = startDate.clone().add(12, 'weeks').toISOString();
}
if ( freq === 'MONTHLY' )
{
until = startDate.clone().add(12, 'months').toISOString();
}
if ( freq === 'YEARLY' )
{
until = startDate.clone().add(5, 'years').toISOString();
}
// Set the until
this.recurrenceForm.get('end.until').setValue(until);
}
// If count is not selected...
if ( endType !== 'count' )
{
let count;
// Change the count's default value based on the frequency
if ( freq === 'DAILY' )
{
count = 30;
}
if ( freq === 'WEEKLY' || freq === 'MONTHLY' )
{
count = 12;
}
if ( freq === 'YEARLY' )
{
count = 5;
}
// Set the count
this.recurrenceForm.get('end.count').setValue(count);
}
}
}