~rjarry/aerc

aerc/commands/msg/invite.go -rw-r--r-- 4.3 KiB
8e53d330Tim Culverhouse terminal: remove invalidate method 4 days ago
                                                                                
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
package msg

import (
	"errors"
	"fmt"
	"io"

	"git.sr.ht/~rjarry/aerc/lib"
	"git.sr.ht/~rjarry/aerc/lib/calendar"
	"git.sr.ht/~rjarry/aerc/lib/format"
	"git.sr.ht/~rjarry/aerc/logging"
	"git.sr.ht/~rjarry/aerc/models"
	"git.sr.ht/~rjarry/aerc/widgets"
	"github.com/emersion/go-message/mail"
)

type invite struct{}

func init() {
	register(invite{})
}

func (invite) Aliases() []string {
	return []string{"accept", "accept-tentative", "decline"}
}

func (invite) Complete(aerc *widgets.Aerc, args []string) []string {
	return nil
}

func (invite) Execute(aerc *widgets.Aerc, args []string) error {
	acct := aerc.SelectedAccount()
	if acct == nil {
		return errors.New("no account selected")
	}
	store := acct.Store()
	if store == nil {
		return errors.New("cannot perform action: messages still loading")
	}
	msg, err := acct.SelectedMessage()
	if err != nil {
		return err
	}

	part := lib.FindCalendartext(msg.BodyStructure, nil)
	if part == nil {
		return fmt.Errorf("no invitation found (missing text/calendar)")
	}

	subject := trimLocalizedRe(msg.Envelope.Subject)
	switch args[0] {
	case "accept":
		subject = "Accepted: " + subject
	case "accept-tentative":
		subject = "Tentatively Accepted: " + subject
	case "decline":
		subject = "Declined: " + subject
	default:
		return fmt.Errorf("no participation status defined")
	}

	conf := acct.AccountConfig()
	from, err := mail.ParseAddress(conf.From)
	if err != nil {
		return err
	}
	var aliases []*mail.Address
	if conf.Aliases != "" {
		aliases, err = mail.ParseAddressList(conf.Aliases)
		if err != nil {
			return err
		}
	}

	// figure out the sending from address if we have aliases
	if len(aliases) != 0 {
		rec := newAddrSet()
		rec.AddList(msg.Envelope.To)
		rec.AddList(msg.Envelope.Cc)
		// test the from first, it has priority over any present alias
		if rec.Contains(from) {
			// do nothing
		} else {
			for _, a := range aliases {
				if rec.Contains(a) {
					from = a
					break
				}
			}
		}
	}

	var to []*mail.Address

	if len(msg.Envelope.ReplyTo) != 0 {
		to = msg.Envelope.ReplyTo
	} else {
		to = msg.Envelope.From
	}

	if !aerc.Config().Compose.ReplyToSelf {
		for i, v := range to {
			if v.Address == from.Address {
				to = append(to[:i], to[i+1:]...)
				break
			}
		}
		if len(to) == 0 {
			to = msg.Envelope.To
		}
	}

	recSet := newAddrSet() // used for de-duping
	recSet.AddList(to)

	h := &mail.Header{}
	h.SetAddressList("from", []*mail.Address{from})
	h.SetSubject(subject)
	h.SetMsgIDList("in-reply-to", []string{msg.Envelope.MessageId})
	err = setReferencesHeader(h, msg.RFC822Headers)
	if err != nil {
		aerc.PushError(fmt.Sprintf("could not set references: %v", err))
	}
	original := models.OriginalMail{
		From:          format.FormatAddresses(msg.Envelope.From),
		Date:          msg.Envelope.Date,
		RFC822Headers: msg.RFC822Headers,
	}

	handleInvite := func(reader io.Reader) (*calendar.Reply, error) {
		cr, err := calendar.CreateReply(reader, from, args[0])
		if err != nil {
			return nil, err
		}
		for _, org := range cr.Organizers {
			organizer, err := mail.ParseAddress(org)
			if err != nil {
				continue
			}
			if !recSet.Contains(organizer) {
				to = append(to, organizer)
			}
		}
		h.SetAddressList("to", to)
		return cr, nil
	}

	addTab := func(cr *calendar.Reply) error {
		composer, err := widgets.NewComposer(aerc, acct, aerc.Config(),
			acct.AccountConfig(), acct.Worker(), "", h, original)
		if err != nil {
			aerc.PushError("Error: " + err.Error())
			return err
		}

		composer.SetContents(cr.PlainText)
		err = composer.AppendPart(cr.MimeType, cr.Params, cr.CalendarText)
		if err != nil {
			return fmt.Errorf("failed to write invitation: %w", err)
		}
		composer.FocusTerminal()

		tab := aerc.NewTab(composer, subject)
		composer.OnHeaderChange("Subject", func(subject string) {
			if subject == "" {
				tab.Name = "New email"
			} else {
				tab.Name = subject
			}
			tab.Content.Invalidate()
		})

		composer.OnClose(func(c *widgets.Composer) {
			if c.Sent() {
				store.Answered([]uint32{msg.Uid}, true, nil)
			}
		})

		return nil
	}

	store.FetchBodyPart(msg.Uid, part, func(reader io.Reader) {
		if cr, err := handleInvite(reader); err != nil {
			aerc.PushError(err.Error())
			return
		} else {
			err := addTab(cr)
			if err != nil {
				logging.Warnf("failed to add tab: %v", err)
			}
		}
	})
	return nil
}