shopping-hours v0.0.4

shopping-hours

A flexible shopping-hours calendar & calculator.

• ~8KB minified.
• Uses a standard JS Date object.
• Moveable feasts (Easter & Pentecost).
• User-provided plugins for moveble dates.
• Elastic dates as fri.4/11 (the 4th Friday of November), wed.last/-, sat/-.
• Returns the current status (open/closed) for any date.
• Automatically calculates the next opening/closing datetime.

Calendar itself is .txt file that uses a simple line-oriented DSL, e.g.:

-/-                 9:00-13:00,14:00-18:00
1/1                 0:0-0:0                   o   new year
easter_orthodox     0:0-0:0                   o
fri.4/11            6:30-23:00                -   black friday
sun/-               0:0-0:0

Why?

TODO (explain how UA online stores work)

Quick Start

$ npm i shopping-hours

Create a simple calendar:

$ node
> sh = require('shopping-hours')
[Function: shopping_hours]
> cal = `-/- 9:00-13:00,14:00-18:00
... sat/- 11:00-16:00
... sun/- :-:`
'-/- 9:00-13:00,14:00-18:00\nsat/- 11:00-16:00\nsun/- :-:'

Next, parse the cal:

> my_shop = sh(cal)
{ parsed_input: { vars: {}, events: [ [Object], [Object], [Object] ] },
  parse: [Function: parse],
  resolve: [Function: resolve],
  business: [Function: business] }

The fn of interest here is #business(). To get the status of our little online store, pass an optional date to it:

> my_shop.business('2018-02-08 01:00')
{ status: 'closed', next: 2018-02-08T07:00:00.000Z }

Because it resolves the cal for 1am, it says that the shop is 'closed', & 'next' key indicates (printed in UTC here; the diff for Europe/Kiev timezone is +2h) when the shop 'opens'.

If we update the time to 9am:

> my_shop.business('2018-02-08 09:00')
{ status: 'open', next: 2018-02-08T11:00:00.000Z }

it says, the shop is 'open' & it closes at 1pm for a lunch break.

2018-02-08 is Thursday, if we specify the next day as

> my_shop.business('2018-02-09 18:01')
{ status: 'closed', next: 2018-02-10T09:00:00.000Z }

it says the shop is 'closed' & it opens at 11am next day (Saturday).

For Saturday it returns:

> my_shop.business('2018-02-10 18:01')
{ status: 'closed', next: 2018-02-12T07:00:00.000Z }

Because we set no working hours for Sundays, it jumps to the next available date, which in this case is Monday.

DSL

TODO

API

TODO

License

MIT.