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package alpscaldav
import (
"fmt"
"net/http"
"net/url"
"time"
"git.sr.ht/~emersion/alps"
"github.com/emersion/go-webdav/caldav"
"github.com/labstack/echo/v4"
)
type CalendarRenderData struct {
alps.BaseRenderData
Time time.Time
Calendar *caldav.Calendar
Events []caldav.CalendarObject
PrevPage, NextPage string
}
type EventRenderData struct {
alps.BaseRenderData
Calendar *caldav.Calendar
Event *caldav.CalendarObject
}
var monthPageLayout = "2006-01"
func parseObjectPath(s string) (string, error) {
p, err := url.PathUnescape(s)
if err != nil {
err = fmt.Errorf("failed to parse path: %v", err)
return "", echo.NewHTTPError(http.StatusBadRequest, err)
}
return string(p), nil
}
func registerRoutes(p *alps.GoPlugin, u *url.URL) {
p.GET("/calendar", func(ctx *alps.Context) error {
var start time.Time
if s := ctx.QueryParam("month"); s != "" {
var err error
start, err = time.Parse(monthPageLayout, s)
if err != nil {
return fmt.Errorf("failed to parse month: %v", err)
}
} else {
now := time.Now()
start = time.Date(now.Year(), now.Month(), 1, 0, 0, 0, 0, now.Location())
}
end := start.AddDate(0, 1, 0)
// TODO: multi-calendar support
c, calendar, err := getCalendar(u, ctx.Session)
if err != nil {
return err
}
query := caldav.CalendarQuery{
CompRequest: caldav.CalendarCompRequest{
Name: "VCALENDAR",
Props: []string{"VERSION"},
Comps: []caldav.CalendarCompRequest{{
Name: "VEVENT",
Props: []string{
"SUMMARY",
"UID",
"DTSTART",
"DTEND",
"DURATION",
},
}},
},
CompFilter: caldav.CompFilter{
Name: "VCALENDAR",
Comps: []caldav.CompFilter{{
Name: "VEVENT",
Start: start,
End: end,
}},
},
}
events, err := c.QueryCalendar(calendar.Path, &query)
if err != nil {
return fmt.Errorf("failed to query calendar: %v", err)
}
return ctx.Render(http.StatusOK, "calendar.html", &CalendarRenderData{
BaseRenderData: *alps.NewBaseRenderData(ctx),
Time: start,
Calendar: calendar,
Events: events,
PrevPage: start.AddDate(0, -1, 0).Format(monthPageLayout),
NextPage: start.AddDate(0, 1, 0).Format(monthPageLayout),
})
})
p.GET("/calendar/:path", func(ctx *alps.Context) error {
path, err := parseObjectPath(ctx.Param("path"))
if err != nil {
return err
}
c, err := newClient(u, ctx.Session)
if err != nil {
return err
}
c, calendar, err := getCalendar(u, ctx.Session)
if err != nil {
return err
}
multiGet := caldav.CalendarMultiGet{
CompRequest: caldav.CalendarCompRequest{
Name: "VCALENDAR",
Props: []string{"VERSION"},
Comps: []caldav.CalendarCompRequest{{
Name: "VEVENT",
Props: []string{
"SUMMARY",
"DESCRIPTION",
"UID",
"DTSTART",
"DTEND",
"DURATION",
},
}},
},
}
events, err := c.MultiGetCalendar(path, &multiGet)
if err != nil {
return fmt.Errorf("failed to multi-get calendar: %v", err)
}
if len(events) != 1 {
return fmt.Errorf("expected exactly one calendar object with path %q, got %v", path, len(events))
}
event := &events[0]
return ctx.Render(http.StatusOK, "event.html", &EventRenderData{
BaseRenderData: *alps.NewBaseRenderData(ctx),
Calendar: calendar,
Event: event,
})
})
}
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