| 1 | package calendar |
| 2 | |
| 3 | import ( |
| 4 | "net/http" |
| 5 | "strconv" |
| 6 | "strings" |
| 7 | "time" |
| 8 | ) |
| 9 | |
| 10 | // eventForm is the create/edit form's view data. It carries the |
| 11 | // submitted values back on a validation failure, so a rejected form |
| 12 | // never loses what somebody typed — the single most common way a form |
| 13 | // wastes a person's time. |
| 14 | type eventForm struct { |
| 15 | Action string |
| 16 | Title string |
| 17 | Heading string |
| 18 | Submit string |
| 19 | Calendars []CalendarView |
| 20 | |
| 21 | EventID int64 |
| 22 | CalendarID int64 |
| 23 | EventTitle string |
| 24 | Location string |
| 25 | Notes string |
| 26 | AllDay bool |
| 27 | StartLocal string |
| 28 | EndLocal string |
| 29 | TZ string |
| 30 | Kind string |
| 31 | Status string |
| 32 | |
| 33 | Repeat string |
| 34 | RepeatEnd string |
| 35 | |
| 36 | Error string |
| 37 | ErrorField string |
| 38 | |
| 39 | // Series is set when editing something that recurs, so the form can |
| 40 | // ask which occurrences the edit applies to. |
| 41 | Series bool |
| 42 | |
| 43 | // Booked is set when a booking references this event. The form |
| 44 | // then shows the scheduling controls disabled and carries their |
| 45 | // stored values as hidden inputs, so a title-only save submits |
| 46 | // exactly what is stored (booking spec B18, B25). BookedBy is the |
| 47 | // booker's name for the sentence beside them. |
| 48 | Booked bool |
| 49 | BookedBy string |
| 50 | |
| 51 | // Occurrence is which one is being edited, when the edit arrived |
| 52 | // from an occurrence URL. Empty means the series itself. |
| 53 | Occurrence string |
| 54 | } |
| 55 | |
| 56 | // readEventForm parses and validates a submission, returning the form |
| 57 | // data to re-render on failure. |
| 58 | func (h *handlers) readEventForm(r *http.Request, p Person) (EventInput, eventForm, bool) { |
| 59 | _ = r.ParseForm() |
| 60 | calID, _ := strconv.ParseInt(r.FormValue("calendar_id"), 10, 64) |
| 61 | allDay := r.FormValue("all_day") == "1" |
| 62 | start := formTime(r.FormValue("start"), allDay) |
| 63 | end := formTime(r.FormValue("end"), allDay) |
| 64 | // Turning a same-day timed event into an all-day event must preserve a |
| 65 | // non-empty half-open range. A date-only end on the same day is empty, |
| 66 | // so a non-midnight submitted end rounds *up* to the following day. |
| 67 | if allDay { |
| 68 | end = roundedAllDayEnd(start, end, r.FormValue("end")) |
| 69 | } |
| 70 | // The zone is the person's, except on a booked event's form, which |
| 71 | // carries the EVENT's own zone as a hidden field: after the host |
| 72 | // changes their profile zone, a title-only save must still match |
| 73 | // the stored row (B25). |
| 74 | tz := strings.TrimSpace(r.FormValue("tz")) |
| 75 | if tz == "" { |
| 76 | tz = p.Zone |
| 77 | } |
| 78 | |
| 79 | in := EventInput{ |
| 80 | CalendarID: calID, |
| 81 | Title: r.FormValue("title"), |
| 82 | Location: r.FormValue("location"), |
| 83 | Notes: r.FormValue("notes"), |
| 84 | AllDay: allDay, |
| 85 | StartLocal: start, |
| 86 | EndLocal: end, |
| 87 | TZ: tz, |
| 88 | Kind: r.FormValue("kind"), |
| 89 | Status: r.FormValue("status"), |
| 90 | RRule: RuleFromRepeat(r.FormValue("repeat"), r.FormValue("repeat_end"), start, tz, allDay), |
| 91 | } |
| 92 | f := eventForm{ |
| 93 | CalendarID: calID, |
| 94 | EventTitle: in.Title, |
| 95 | Location: in.Location, |
| 96 | Notes: in.Notes, |
| 97 | AllDay: allDay, |
| 98 | StartLocal: in.StartLocal, |
| 99 | EndLocal: in.EndLocal, |
| 100 | TZ: tz, |
| 101 | Kind: in.Kind, |
| 102 | Status: in.Status, |
| 103 | Repeat: r.FormValue("repeat"), |
| 104 | RepeatEnd: r.FormValue("repeat_end"), |
| 105 | Occurrence: r.FormValue("occurrence"), |
| 106 | Series: r.FormValue("scope") != "", |
| 107 | } |
| 108 | if err := ValidateEventInput(&in); err != nil { |
| 109 | if ve, ok := Invalid(err); ok { |
| 110 | f.Error, f.ErrorField = ve.Message, ve.Field |
| 111 | } else { |
| 112 | f.Error = "That did not work." |
| 113 | } |
| 114 | return in, f, false |
| 115 | } |
| 116 | return in, f, true |
| 117 | } |
| 118 | |
| 119 | func hasClock(raw string) bool { |
| 120 | v := strings.TrimSpace(raw) |
| 121 | if len(v) <= len(LayoutDate) || v[len(LayoutDate)] != 'T' { |
| 122 | return false |
| 123 | } |
| 124 | return !strings.HasPrefix(v[len(LayoutDate)+1:], "00:00") |
| 125 | } |
| 126 | |
| 127 | func roundedAllDayEnd(start, end, raw string) string { |
| 128 | if !hasClock(raw) || end != start { |
| 129 | return end |
| 130 | } |
| 131 | d, err := time.Parse(LayoutDate, end) |
| 132 | if err != nil { |
| 133 | return end |
| 134 | } |
| 135 | return d.AddDate(0, 0, 1).Format(LayoutDate) |
| 136 | } |
| 137 | |
| 138 | // formTime reads a Starts/Ends value in the shape the All day box |
| 139 | // asks for. The form renders date inputs for an all-day event and |
| 140 | // datetime inputs otherwise, but without script ticking or unticking |
| 141 | // All day cannot change the input under it — so an all-day submission |
| 142 | // may arrive as "2026-09-23T00:00" and a timed one as "2026-09-23". |
| 143 | // Both mean something unambiguous: the date part, or midnight on it. |
| 144 | // Anything else is passed through for validation to refuse. |
| 145 | func formTime(raw string, allDay bool) string { |
| 146 | v := strings.TrimSpace(raw) |
| 147 | switch { |
| 148 | case allDay && len(v) > len(LayoutDate) && v[len(LayoutDate)] == 'T': |
| 149 | return v[:len(LayoutDate)] |
| 150 | case !allDay && len(v) == len(LayoutDate): |
| 151 | return v + "T00:00" |
| 152 | } |
| 153 | return v |
| 154 | } |
| 155 | |
| 156 | // writable is the calendars somebody may actually create an event on. |
| 157 | // A dropdown offering a calendar the server would refuse is a dropdown |
| 158 | // that teaches people the app is broken. |
| 159 | func writable(cals []CalendarView) []CalendarView { |
| 160 | out := make([]CalendarView, 0, len(cals)) |
| 161 | for _, c := range cals { |
| 162 | if CanWrite(c.Role) { |
| 163 | out = append(out, c) |
| 164 | } |
| 165 | } |
| 166 | return out |
| 167 | } |
| 168 | |
amadan