112 lines
2.8 KiB
Go
112 lines
2.8 KiB
Go
// Vikunja is a todo-list application to facilitate your life.
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// Copyright 2018 Vikunja and contributors. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package caldav
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import (
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"code.vikunja.io/api/pkg/utils"
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"strconv"
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"time"
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)
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// Event holds a single caldav event
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type Event struct {
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Summary string
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Description string
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UID string
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Alarms []Alarm
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TimestampUnix int64
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StartUnix int64
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EndUnix int64
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}
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// Alarm holds infos about an alarm from a caldav event
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type Alarm struct {
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TimeUnix int64
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Description string
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}
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// Config is the caldav calendar config
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type Config struct {
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Name string
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ProdID string
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}
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// ParseEvents parses an array of caldav events and gives them back as string
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func ParseEvents(config *Config, events []*Event) (caldavevents string) {
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caldavevents += `BEGIN:VCALENDAR
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VERSION:2.0
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METHOD:PUBLISH
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X-PUBLISHED-TTL:PT4H
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X-WR-CALNAME:` + config.Name + `
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PRODID:-//` + config.ProdID + `//EN`
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for _, e := range events {
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if e.UID == "" {
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e.UID = makeCalDavTimeFromUnixTime(e.TimestampUnix) + utils.Sha256(e.Summary)
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}
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caldavevents += `
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BEGIN:VEVENT
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UID:` + e.UID + `
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SUMMARY:` + e.Summary + `
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DESCRIPTION:` + e.Description + `
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DTSTAMP:` + makeCalDavTimeFromUnixTime(e.TimestampUnix) + `
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DTSTART:` + makeCalDavTimeFromUnixTime(e.StartUnix) + `
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DTEND:` + makeCalDavTimeFromUnixTime(e.EndUnix)
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for _, a := range e.Alarms {
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if a.Description == "" {
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a.Description = e.Summary
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}
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caldavevents += `
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BEGIN:VALARM
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TRIGGER:` + calcAlarmDateFromReminder(e.StartUnix, a.TimeUnix) + `
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ACTION:DISPLAY
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DESCRIPTION:` + a.Description + `
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END:VALARM`
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}
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caldavevents += `
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END:VEVENT`
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}
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caldavevents += `
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END:VCALENDAR` // Need a line break
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return
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}
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func makeCalDavTimeFromUnixTime(unixtime int64) (caldavtime string) {
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tm := time.Unix(unixtime, 0)
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return tm.Format("20060102T150405")
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}
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func calcAlarmDateFromReminder(eventStartUnix, reminderUnix int64) (alarmTime string) {
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if eventStartUnix > reminderUnix {
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alarmTime += `-`
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}
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alarmTime += `PT`
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diff := eventStartUnix - reminderUnix
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if diff < 0 { // Make it positive
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diff = diff * -1
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}
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alarmTime += strconv.Itoa(int(diff/60)) + "M"
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return
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}
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