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Add holidays in lieu #10

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merged 5 commits into from
Jan 10, 2023
Merged

Add holidays in lieu #10

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daf70bc
Add, not replace, holidays in lieu; fix consecutive holidays
koterpillar Jan 7, 2023
6fbea19
Better interface for consecutive holidays
koterpillar Jan 7, 2023
bffd08e
Restore removed returns annotation
koterpillar Jan 10, 2023
29e5ca0
Fix observed holidays in Australia
koterpillar Jan 10, 2023
2d5e332
Remove observedName parameter
koterpillar Jan 10, 2023
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85 changes: 50 additions & 35 deletions js/holidays.js
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Original file line number Diff line number Diff line change
Expand Up @@ -20,12 +20,12 @@ function checkHoliday( year, month, day ) {
{ date: '4-2', name: 'Día del Veterano' },
{ date: '5-1', name: 'Día del Trabajador' },
{ date: '5-25', name: 'Revolución de Mayo' },
{ date: calcObservation( year, 6, 17, country ), name: 'General Martín Miguel de Güemes' },
...observed( year, 6, 17, country, 'General Martín Miguel de Güemes' ),
{ date: '6-20', name: 'General Manuel Belgrano' },
{ date: '7-9', name: 'Día de la Independencia' },
{ date: calcObservation( year, 8, 17, country ), name: 'General José de San Martín' },
{ date: calcObservation( year, 10, 12, country ), name: 'Respeto a la Diversidad Cultural' },
{ date: calcObservation( year, 11, 20, country ), name: 'Soberanía Nacional' },
...observed( year, 8, 17, country, 'General José de San Martín' ),
...observed( year, 10, 12, country, 'Respeto a la Diversidad Cultural' ),
...observed( year, 11, 20, country, 'Soberanía Nacional' ),
{ date: '12-8', name: 'Inmaculada Concepción de María' },
{ date: '12-25', name: 'Navidad' }
];
Expand All @@ -38,8 +38,8 @@ function checkHoliday( year, month, day ) {

case 'au':
holidays = [
{ date: calcObservation( year, 1, 1, country ), name: 'New Year\'s Day' },
{ date: '1-26', name: 'Australia Day' },
...observed( year, 1, 1, country, 'New Year\'s Day' ),
...observed( year, 1, 26, country, 'Australia Day' ),
{ date: floatingDoW( 1, year, 2, 8 ), name: 'Royal Hobart Regatta (TAS)' },
{ date: floatingDoW( 1, year, 3, 1 ), name: 'Labour Day (WA)' },
{ date: floatingDoW( 1, year, 3, 8 ), name: 'Labour Day (VIC)' },
Expand All @@ -61,8 +61,8 @@ function checkHoliday( year, month, day ) {
{ date: floatingDoW( 1, year, 10, 1 ), name: 'Labour Day (ACT, NSW, SA)' },
{ date: floatingDoW( 2, year, 11, 1 ), name: 'Melbourne Cup (VIC)' },
{ date: floatingDoW( 1, year, 11, 1 ), name: 'Recreation Day (TAS)' },
{ date: calcObservation( year, 12, 25, country ), name: 'Christmas Day' },
{ date: calcObservation( year, 12, 26, country ), name: 'Boxing Day' }
...observed( year, 12, 25, country, 'Christmas Day', { consecutive: 2 } ),
...observed( year, 12, 26, country, 'Boxing Day', { consecutive: 2 } )
];
easterHolidays = [
{ days: -2, name: 'Good Friday' },
Expand Down Expand Up @@ -174,13 +174,13 @@ function checkHoliday( year, month, day ) {

case 'mx':
holidays = [
{ date: calcObservation( year, 1, 1, country ), name: 'Año Nuevo' },
...observed( year, 1, 1, country, 'Año Nuevo' ),
{ date: floatingDoW( 1, year, 2, 1 ), name: 'Día de la Constitución' },
{ date: floatingDoW( 1, year, 3, 15 ), name: 'Natalicio de Benito Juárez' },
{ date: calcObservation( year, 5, 1, country ), name: 'Día del Trabajo' },
{ date: calcObservation( year, 9, 16, country ), name: 'Día de la Independencia' },
...observed( year, 5, 1, country, 'Día del Trabajo' ),
...observed( year, 9, 16, country, 'Día de la Independencia' ),
{ date: floatingDoW( 1, year, 11, 15 ), name: 'Día de la Revolución' },
{ date: calcObservation( year, 12, 25, country ), name: 'Navidad' }
...observed( year, 12, 25, country, 'Navidad')
];
break;

Expand All @@ -206,12 +206,12 @@ function checkHoliday( year, month, day ) {

case 'uk':
holidays = [
{ date: calcObservation( year, 1, 1, country ), name: 'New Year\'s Day' },
...observed( year, 1, 1, country, 'New Year\'s Day' ),
{ date: floatingDoW( 1, year, 5, 1 ), name: 'May Day Bank Holiday' },
{ date: floatingDoW( 1, year, 5, 25 ), name: 'Spring Bank Holiday' },
{ date: floatingDoW( 1, year, 8, 25 ), name: 'Late Summer Bank Holiday' },
{ date: calcObservation( year, 12, 25, country ), name: 'Christmas Day' },
{ date: calcObservation( year, 12, 26, country ), name: 'Boxing Day' }
...observed( year, 12, 25, country, 'Christmas Day', { consecutive: 2 } ),
...observed( year, 12, 26, country, 'Boxing Day', { consecutive: 2 } )
];
easterHolidays = [
{ days: -2, name: 'Good Friday' },
Expand All @@ -238,13 +238,13 @@ function checkHoliday( year, month, day ) {
holidays = [
{ date: '1-1', name: 'Año Nuevo' },
{ date: '1-6', name: 'Día de Reyes' },
{ date: calcObservation( year, 4, 19, country ), name: 'Desembarco de los 33 Orientales' },
...observed( year, 4, 19, country, 'Desembarco de los 33 Orientales' ),
{ date: '5-1', name: 'Día de los Trabajadores' },
{ date: calcObservation( year, 5, 18, country ), name: 'Batalla de las Piedras' },
...observed( year, 5, 18, country, 'Batalla de las Piedras' ),
{ date: '6-19', name: 'Natalicio de Artigas y Día del Nunca Más' },
{ date: '7-18', name: 'Jura de la Constitución' },
{ date: '8-25', name: 'Declaratoria de la Independencia' },
{ date: calcObservation( year, 10, 12, country ), name: 'Día de la Raza' },
...observed( year, 10, 12, country, 'Día de la Raza' ),
{ date: '11-2', name: 'Día de los Difuntos' },
{ date: '12-25', name: 'Navidad' }
];
Expand Down Expand Up @@ -354,51 +354,66 @@ function getMonthDays( year ) {
}

/**
* Calculates the observation date for a given holiday according to a country's rules
* Returns an array of actual and observed holiday dates according to a country's rules
*
* @param {number} year
* @param {number} month
* @param {number} day
* @param {string} country
* I.e. if a holiday falls on a Sunday and an Monday becomes a public holiday instead,
* both Sunday and Monday dates will be returned.
*
* @param {number} year Holiday year
* @param {number} month Holiday month
* @param {number} day Holiday day
* @param {string} country Country code
* @param {string} name Holiday name
* @param {Object} options Additional options
* @param {number} options.consecutive How many consecutive holidays is this one a part of (to avoid shifting observed date onto them)
* @returns {string} holiday date in 'month-day' format
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*/
function calcObservation( year, month, day, country ) {
function observed( year, month, day, country, name, options ) {
options = options || {};

var diff = 0,
let diffs = [0],
date = new Date( year, month - 1, day ),
dow = date.getDay();
dow = date.getDay(),
observedName = name;

switch ( country ) {
case 'mx' :
if ( dow == 0 )
diff = 1;
diffs = [1];
else if ( dow == 6 )
diff = -1;
diffs = [-1];
break;

case 'au' :
case 'uk' :
var consecutive = options.consecutive || 1;
if ( dow == 0 )
diff = 1;
diffs.push( consecutive );
else if ( dow == 6 )
diff = 2;
diffs.push( 2 );
observedName = `${name} (in lieu)`;
break;

case 'ar' :
case 'uy' :
if ( dow == 2 )
diff = -1;
diffs = [-1];
else if ( dow == 3 )
diff = -2;
diffs = [-2];
else if ( dow == 4 )
diff = 4;
diffs = [4];
else if ( dow == 5 )
diff = 3;
diffs = [3];
break;
}

return dateToMonthDay( dateAdd( date, diff ) );
return diffs.map(diff => {
var newDate = dateToMonthDay( dateAdd( date, diff ) );
return {
date: newDate,
name: diff == 0 ? name : observedName
}
});
}

/**
Expand Down