aboutsummaryrefslogtreecommitdiffstats
path: root/aerc.go
blob: 17b3c576781977048505383696a87fb2913b1db4 (plain) (blame)
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
195
196
197
198
199
200
package main

import (
	"fmt"
	"io"
	"io/ioutil"
	"log"
	"os"
	"sort"
	"time"

	"git.sr.ht/~sircmpwn/getopt"
	"github.com/mattn/go-isatty"

	"git.sr.ht/~sircmpwn/aerc/commands"
	"git.sr.ht/~sircmpwn/aerc/commands/account"
	"git.sr.ht/~sircmpwn/aerc/commands/compose"
	"git.sr.ht/~sircmpwn/aerc/commands/msg"
	"git.sr.ht/~sircmpwn/aerc/commands/msgview"
	"git.sr.ht/~sircmpwn/aerc/commands/terminal"
	"git.sr.ht/~sircmpwn/aerc/config"
	"git.sr.ht/~sircmpwn/aerc/lib"
	"git.sr.ht/~sircmpwn/aerc/lib/templates"
	libui "git.sr.ht/~sircmpwn/aerc/lib/ui"
	"git.sr.ht/~sircmpwn/aerc/widgets"
)

func getCommands(selected libui.Drawable) []*commands.Commands {
	switch selected.(type) {
	case *widgets.AccountView:
		return []*commands.Commands{
			account.AccountCommands,
			msg.MessageCommands,
			commands.GlobalCommands,
		}
	case *widgets.Composer:
		return []*commands.Commands{
			compose.ComposeCommands,
			commands.GlobalCommands,
		}
	case *widgets.MessageViewer:
		return []*commands.Commands{
			msgview.MessageViewCommands,
			msg.MessageCommands,
			commands.GlobalCommands,
		}
	case *widgets.Terminal:
		return []*commands.Commands{
			terminal.TerminalCommands,
			commands.GlobalCommands,
		}
	default:
		return []*commands.Commands{commands.GlobalCommands}
	}
}

func execCommand(aerc *widgets.Aerc, ui *libui.UI, cmd []string) error {
	cmds := getCommands((*aerc).SelectedTab())
	for i, set := range cmds {
		err := set.ExecuteCommand(aerc, cmd)
		if _, ok := err.(commands.NoSuchCommand); ok {
			if i == len(cmds)-1 {
				return err
			}
			continue
		} else if _, ok := err.(commands.ErrorExit); ok {
			ui.Exit()
			return nil
		} else if err != nil {
			return err
		} else {
			break
		}
	}
	return nil
}

func getCompletions(aerc *widgets.Aerc, cmd string) []string {
	var completions []string
	for _, set := range getCommands((*aerc).SelectedTab()) {
		completions = append(completions, set.GetCompletions(aerc, cmd)...)
	}
	sort.Strings(completions)
	return completions
}

var (
	ShareDir string
	Version  string
)

func usage() {
	log.Fatal("Usage: aerc [-v] [mailto:...]")
}

func main() {
	opts, optind, err := getopt.Getopts(os.Args, "v")
	if err != nil {
		log.Print(err)
		usage()
		return
	}
	for _, opt := range opts {
		switch opt.Option {
		case 'v':
			fmt.Println("aerc " + Version)
			return
		}
	}
	initDone := make(chan struct{})
	args := os.Args[optind:]
	if len(args) > 1 {
		usage()
		return
	} else if len(args) == 1 {
		arg := args[0]
		err := lib.ConnectAndExec(arg)
		if err == nil {
			return // other aerc instance takes over
		}
		fmt.Fprintf(os.Stderr, "Failed to communicate to aerc: %v", err)
		// continue with setting up a new aerc instance and retry after init
		go func(msg string) {
			<-initDone
			err := lib.ConnectAndExec(msg)
			if err != nil {
				fmt.Fprintf(os.Stderr, "Failed to communicate to aerc: %v", err)
			}
		}(arg)
	}

	var (
		logOut io.Writer
		logger *log.Logger
	)
	if !isatty.IsTerminal(os.Stdout.Fd()) {
		logOut = os.Stdout
	} else {
		logOut = ioutil.Discard
		os.Stdout, _ = os.Open(os.DevNull)
	}
	logger = log.New(logOut, "", log.LstdFlags)
	logger.Println("Starting up aerc")

	conf, err := config.LoadConfigFromFile(nil, ShareDir)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load config: %v\n", err)
		os.Exit(1)
	}

	var (
		aerc *widgets.Aerc
		ui   *libui.UI
	)

	aerc = widgets.NewAerc(conf, logger, func(cmd []string) error {
		return execCommand(aerc, ui, cmd)
	}, func(cmd string) []string {
		return getCompletions(aerc, cmd)
	}, &commands.CmdHistory)

	ui, err = libui.Initialize(aerc)
	if err != nil {
		panic(err)
	}
	defer ui.Close()

	if conf.Ui.MouseEnabled {
		ui.EnableMouse()
	}

	logger.Println("Initializing PGP keyring")
	lib.InitKeyring()
	defer lib.UnlockKeyring()

	logger.Println("Starting Unix server")
	as, err := lib.StartServer(logger)
	if err != nil {
		logger.Printf("Failed to start Unix server: %v (non-fatal)", err)
	} else {
		defer as.Close()
		as.OnMailto = aerc.Mailto
	}

	// set the aerc version so that we can use it in the template funcs
	templates.SetVersion(Version)

	close(initDone)

	for !ui.ShouldExit() {
		for aerc.Tick() {
			// Continue updating our internal state
		}
		if !ui.Tick() {
			// ~60 FPS
			time.Sleep(16 * time.Millisecond)
		}
	}
	aerc.CloseBackends()
}