-
Notifications
You must be signed in to change notification settings - Fork 0
/
model.go
148 lines (124 loc) · 3.92 KB
/
model.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
package main
import (
"database/sql"
"fmt"
"io"
"math"
"strconv"
"strings"
"time"
"github.com/jordic/goics"
"github.com/lib/pq"
)
// round is taken from <https://github.com/golang/go/issues/4594#issuecomment-135336012>
func round(f float64) int {
if math.Abs(f) < 0.5 {
return 0
}
return int(f + math.Copysign(0.5, f))
}
// Event represents an ical event.
type Event struct {
ID int `db:"id"`
Start time.Time `db:"start_date"`
End time.Time `db:"end_date"`
AllDay bool `db:"all_day"`
Title string `db:"title"`
OrganizerName string `db:"organizer_name"`
OrganizerEmail sql.NullString `db:"organizer_email"`
Attendees pq.StringArray `db:"attendees"`
Location string `db:"location"`
Recurrence sql.NullString `db:"recurrence"`
Resources sql.NullString `db:"resources"`
Comment sql.NullString `db:"comment"`
Type sql.NullString `db:"type"`
IsPrivate bool `db:"is_private"`
}
// DayDuration returns the duration of the event rounded to the number of days.
func (e *Event) DayDuration() int {
d := e.End.Sub(e.Start)
return round(d.Hours() / 24)
}
// EventsCollection represents a collection of Event instances.
type EventsCollection []*Event
// EmitICal implements the ICalEmiter interface.
func (ec EventsCollection) EmitICal() goics.Componenter {
c := goics.NewComponent()
c.SetType("VCALENDAR")
c.AddProperty("CALSCAL", "GREGORIAN")
c.AddProperty("PRODID;X-RICAL-TZSOURCE=TZINFO", "-//geodata.soton.ac.uk")
c.AddProperty("X-PUBLISHED-TTL", "PT1H") // Format: Duration ([RFC2445] section 4.3.6)
c.AddProperty("METHOD", "PUBLISH")
// Generate a component for each event.
for _, ev := range ec {
var desc, k, v string
s := goics.NewComponent()
s.SetType("VEVENT")
if ev.AllDay {
k, v = goics.FormatDateField("DTSTART", ev.Start.In(time.Local))
s.AddProperty(k, v)
days := ev.DayDuration()
if days > 1 {
end := ev.Start.In(time.Local).Add(time.Duration(days) * (time.Hour * 24))
k, v = goics.FormatDateField("DTEND", end)
s.AddProperty(k, v)
}
} else {
k, v = goics.FormatDateTimeField("DTSTART", ev.Start)
s.AddProperty(k, v)
k, v = goics.FormatDateTimeField("DTEND", ev.End)
s.AddProperty(k, v)
}
s.AddProperty("UID", strconv.Itoa(ev.ID))
if ev.OrganizerEmail.Valid && ev.OrganizerEmail.String != "" {
k = fmt.Sprintf("ORGANIZER;CN=%s", ev.OrganizerName)
v = fmt.Sprintf("MAILTO:%s", ev.OrganizerEmail.String)
s.AddProperty(k, v)
}
if ev.IsPrivate {
s.AddProperty("SUMMARY", "Private appointment")
if ev.Type.Valid {
cat := strings.Title(ev.Type.String)
s.AddProperty("CATEGORIES", cat)
}
} else {
s.AddProperty("SUMMARY", ev.Title)
if len(ev.Location) > 0 {
s.AddProperty("LOCATION", ev.Location)
}
if ev.Type.Valid {
cat := strings.Title(ev.Type.String)
s.AddProperty("CATEGORIES", cat)
desc += fmt.Sprintf("Category: %s\\n", cat)
}
if ev.Recurrence.Valid {
desc += fmt.Sprintf("Recurrence: %s\\n", strings.Title(ev.Recurrence.String))
}
/* Attendees shouldn't appear in a PUBLISH calendar.
for _, a := range ev.Attendees {
k = fmt.Sprintf("ATTENDEE;CN=%s", a)
s.AddProperty(k, "MAILTO:[email protected]")
}*/
if len(ev.Attendees) > 0 {
desc += fmt.Sprintf("Attendees: %s\\n", strings.Join(ev.Attendees, ", "))
}
if ev.Resources.Valid {
s.AddProperty("RESOURCES", ev.Resources.String)
desc += fmt.Sprintf("Resources: %s\\n", ev.Resources.String)
}
if ev.Comment.Valid {
s.AddProperty("COMMENT", ev.Comment.String)
desc += fmt.Sprintf("Comment: %s\\n", ev.Comment.String)
}
if len(desc) > 0 {
s.AddProperty("DESCRIPTION", desc)
}
}
c.AddComponent(s)
}
return c
}
// Write encodes the events in iCalendar format to w.
func (ec EventsCollection) Write(w io.Writer) {
goics.NewICalEncode(w).Encode(ec)
}