code:this is the codebase in haskell programming

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Ian12467 2023-02-26 23:00:55 +03:00
parent e7207ddf71
commit 533d78358a
1 changed files with 40 additions and 0 deletions

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main.hs Executable file
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import Data.Conduit
import Data.Conduit.Ical
import Data.Time
import Data.Text (Text)
import Data.Icalendar
import Data.Icalendar.Types
import Data.Icalendar.Printer
import System.Cron
-- Parse iCalendar data from each subscription
getEvents :: [Text] -> IO [VEvent]
getEvents urls = do
events <- forM urls $ \url -> do
runResourceT $ parseIcs url $$ sinkIcs
return $ concat events
-- Generate a new iCalendar file with the combined events
generateCalendar :: [VEvent] -> Text
generateCalendar events =
let cal = Calendar [Version 2, ProdId "my-calendar"]
(map (\event -> Component "VEVENT" [event]) events)
in printIcs cal
-- Define the cron expression for the schedule
cronExpression = "0,30 * * * *" -- runs every 30 minutes
-- Define the task that should be executed on the schedule
task :: IO ()
task = do
putStrLn "Updating calendar..."
events <- getEvents urls -- get events from subscriptions
let newCalendar = generateCalendar events -- generate new calendar
-- write new calendar to file
writeFile "calendar.ics" (unpack newCalendar)
putStrLn "Calendar updated!"
-- Run the task on the schedule
main :: IO ()
main = withCron cronExpression task