package koushincaldav import ( "fmt" "net/http" "net/url" "git.sr.ht/~emersion/koushin" "github.com/emersion/go-webdav/caldav" ) var errNoCalendar = fmt.Errorf("caldav: no calendar found") type authRoundTripper struct { upstream http.RoundTripper session *koushin.Session } func (rt *authRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) { rt.session.SetHTTPBasicAuth(req) return rt.upstream.RoundTrip(req) } func newClient(u *url.URL, session *koushin.Session) (*caldav.Client, error) { rt := authRoundTripper{ upstream: http.DefaultTransport, session: session, } c, err := caldav.NewClient(&http.Client{Transport: &rt}, u.String()) if err != nil { return nil, fmt.Errorf("failed to create CalDAV client: %v", err) } return c, nil } func getCalendar(u *url.URL, session *koushin.Session) (*caldav.Client, *caldav.Calendar, error) { c, err := newClient(u, session) if err != nil { return nil, nil, err } principal, err := c.FindCurrentUserPrincipal() if err != nil { return nil, nil, fmt.Errorf("failed to query CalDAV principal: %v", err) } calendarHomeSet, err := c.FindCalendarHomeSet(principal) if err != nil { return nil, nil, fmt.Errorf("failed to query CalDAV calendar home set: %v", err) } calendars, err := c.FindCalendars(calendarHomeSet) if err != nil { return nil, nil, fmt.Errorf("failed to find calendars: %v", err) } if len(calendars) == 0 { return nil, nil, errNoCalendar } return c, &calendars[0], nil }