package cmd

import (
	"context"
	"time"

	"github.com/Jaculabilis/intake/core"
	"github.com/spf13/cobra"
)

var monitorCmd = &cobra.Command{
	Use:   "monitor",
	Short: "Run continuously and update sources according to their fetch schedule",
	Long: `Run continuously and update sources.

Sources are monitored and fetched according to the schedule specified by
their INTAKE_FETCH environment variables. A schedule may be:

- "every <duration>", where <duration> is a Go duration string
- "at HH:MM[,HH:MM[...]]", where HH:MM is an hour and minute
- "on DOW[,DOW[...]] [at ...]", where DOW is an abbreviated weekday
- "on M/D[,M/D[...]] [at ...]", where M/D is a month and day
`,
	Example: `
every 5m             Every 5 minutes (00:00, 00:05, ...)
every 1d             Once per day (at midnight)
every 7d             Once per week (at midnight Sunday)
at 08:00             Once per day at 08:00
at 06:00,18:00       Twice per day at 6am and 6pm
on Tue,Thu           Twice a week, on Tue and Thu
on Mon,Fri at 12:00  Twice a week, at noon on Monday and Friday
on 3/25              Once a year on March 25
on */7               Each month on the 7th
`,
	Run: func(cmd *cobra.Command, args []string) {
		monitor()
	},
}

func init() {
	rootCmd.AddCommand(monitorCmd)
}

func monitor() {
	db := openAndMigrateDb()
	core.BackgroundFetch(context.Background(), db, time.Minute)
}