forked from aksdb/CalAnonSync
111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
package main
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import (
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"fmt"
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"github.com/spf13/cobra"
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"log"
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"os"
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"time"
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)
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func main() {
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rootCmd := &cobra.Command{
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Use: "calanonsync",
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Short: "Synchronize a calendar from EWS to CalDAV by event time and an anonymized title only.",
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Run: runSynchronization,
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}
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rootCmd.AddCommand(InitSettingsCmd())
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if err := rootCmd.Execute(); err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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}
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func runSynchronization(cmd *cobra.Command, args []string) {
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s := LoadSettings()
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e := NewEWSCalendar(s.EWS.URL, s.EWS.Username, s.EWS.Password)
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id, err := e.getCalendarFolderID()
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if err != nil {
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log.Fatalln(err)
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}
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items, err := e.getCalendarItems(id,
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time.Now().AddDate(0, -1, 0), // One month past
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time.Now().AddDate(0, 2, 0)) // Two months ahead
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if err != nil {
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log.Fatalf("Could not get EWS items: %s\n", err)
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}
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relevantEWSItems := make(map[string]CalendarItem)
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for _, item := range items {
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// Ignore private items.
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if item.Sensitivity != "Private" && !item.IsCancelled() {
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// None-private items though ... remember them by hash.
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// The hash will equal the CalDAV UID (and its filename).
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relevantEWSItems[item.Hash()] = item
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}
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}
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c := NewCalDAV(s.CalDAV)
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calDavItems, err := c.GetEvents()
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if err != nil {
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log.Fatalf("Could not get CalDAV items: %s\n", err)
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}
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// Build a map for easier lookup by UID
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calDavItemMap := make(map[string]CalDAVItem)
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for _, item := range calDavItems {
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calDavItemMap[item.UID()] = item
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}
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// First step: find items that were changed or that were removed
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// and update the CalDAV side accordingly.
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for uid, calDavItem := range calDavItemMap {
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if ewsItem, ok := relevantEWSItems[uid]; ok {
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// Good, so we still know the item at least.
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if !ewsItem.Start.Equal(calDavItem.Start()) ||
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!ewsItem.End.Equal(calDavItem.End()) {
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// So times have changed. Update.
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calDavItem.Update(ewsItem.Start, ewsItem.End, ewsItem.IsAllDayEvent)
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err := c.UploadItem(calDavItem)
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if err == nil {
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log.Printf("Updated item %s (%s)\n", uid, ewsItem.Subject)
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} else {
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// Not fatal, but worth a note.
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log.Println(err)
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}
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}
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} else {
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// Oops, seems the item vanished.
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err := c.DeleteItem(calDavItem)
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if err == nil {
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log.Printf("Deleted item %s (%s)\n", calDavItem.UID(), calDavItem.Summary())
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} else {
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// Not fatal, but worth a note.
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log.Println(err)
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}
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}
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}
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// Find items we don't know so far and create them.
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for uid, ewsItem := range relevantEWSItems {
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if _, ok := calDavItemMap[uid]; !ok {
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title := s.Anonymize.Title.Apply(ewsItem.Subject)
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ical := CreateICal(ewsItem.Hash(), title, ewsItem.Start, ewsItem.End, ewsItem.IsAllDayEvent)
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calDavItem := CalDAVItem{HRef: uid + ".ics", ICal: ical}
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err := c.UploadItem(calDavItem)
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if err == nil {
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log.Printf("Created item %s (%s)\n", uid, ewsItem.Subject)
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} else {
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log.Println(err)
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}
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}
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}
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}
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