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package msg
import (
"fmt"
"sync"
"time"
"git.sr.ht/~sircmpwn/getopt"
"git.sr.ht/~rjarry/aerc/lib"
"git.sr.ht/~rjarry/aerc/logging"
"git.sr.ht/~rjarry/aerc/models"
"git.sr.ht/~rjarry/aerc/widgets"
"git.sr.ht/~rjarry/aerc/worker/types"
)
type FlagMsg struct{}
func init() {
register(FlagMsg{})
}
func (FlagMsg) Aliases() []string {
return []string{"flag", "unflag", "read", "unread"}
}
func (FlagMsg) Complete(aerc *widgets.Aerc, args []string) []string {
return nil
}
// If this was called as 'flag' or 'unflag', without the toggle (-t)
// option, then it will flag the corresponding messages with the given
// flag. If the toggle option was given, it will individually toggle
// the given flag for the corresponding messages.
//
// If this was called as 'read' or 'unread', it has the same effect as
// 'flag' or 'unflag', respectively, but the 'Seen' flag is affected.
func (FlagMsg) Execute(aerc *widgets.Aerc, args []string) error {
// The flag to change
var flag models.Flag
// User-readable name of the flag to change
var flagName string
// Whether to toggle the flag (true) or to enable/disable it (false)
var toggle bool
// Whether to enable (true) or disable (false) the flag
enable := (args[0] == "read" || args[0] == "flag")
// User-readable name for the action being performed
var actionName string
// Getopt option string, varies by command name
var getoptString string
// Help message to provide on parsing failure
var helpMessage string
// Used during parsing to prevent choosing a flag muliple times
// A default flag will be used if this is false
flagChosen := false
if args[0] == "read" || args[0] == "unread" {
flag = models.SeenFlag
flagName = "read"
getoptString = "t"
helpMessage = "Usage: " + args[0] + " [-t]"
} else { // 'flag' / 'unflag'
flag = models.FlaggedFlag
flagName = "flagged"
getoptString = "tax:"
helpMessage = "Usage: " + args[0] + " [-t] [-a | -x <flag>]"
}
opts, optind, err := getopt.Getopts(args, getoptString)
if err != nil {
return err
}
for _, opt := range opts {
switch opt.Option {
case 't':
toggle = true
case 'a':
if flagChosen {
return fmt.Errorf("Cannot choose a flag multiple times! " + helpMessage)
}
flag = models.AnsweredFlag
flagName = "answered"
flagChosen = true
case 'x':
if flagChosen {
return fmt.Errorf("Cannot choose a flag multiple times! " + helpMessage)
}
// TODO: Support all flags?
switch opt.Value {
case "Seen":
flag = models.SeenFlag
flagName = "seen"
case "Answered":
flag = models.AnsweredFlag
flagName = "answered"
case "Flagged":
flag = models.FlaggedFlag
flagName = "flagged"
default:
return fmt.Errorf("Unknown / Prohibited flag \"%v\"", opt.Value)
}
flagChosen = true
}
}
switch {
case toggle:
actionName = "Toggling"
case enable:
actionName = "Setting"
default:
actionName = "Unsetting"
}
if optind != len(args) {
// Any non-option arguments: Error
return fmt.Errorf(helpMessage)
}
h := newHelper(aerc)
store, err := h.store()
if err != nil {
return err
}
// UIDs of messages to enable or disable the flag for.
var toEnable []uint32
var toDisable []uint32
if toggle {
// If toggling, split messages into those that need to
// be enabled / disabled.
msgs, err := h.messages()
if err != nil {
return err
}
for _, m := range msgs {
var enabled bool
for _, mFlag := range m.Flags {
if mFlag == flag {
enabled = true
break
}
}
if enabled {
toDisable = append(toDisable, m.Uid)
} else {
toEnable = append(toEnable, m.Uid)
}
}
} else {
msgUids, err := h.markedOrSelectedUids()
if err != nil {
return err
}
if enable {
toEnable = msgUids
} else {
toDisable = msgUids
}
}
var wg sync.WaitGroup
success := true
if len(toEnable) != 0 {
submitFlagChange(aerc, store, toEnable, flag, true, &wg, &success)
}
if len(toDisable) != 0 {
submitFlagChange(aerc, store, toDisable, flag, false, &wg, &success)
}
// We need to do flagging in the background, else we block the main thread
go func() {
defer logging.PanicHandler()
wg.Wait()
if success {
aerc.PushStatus(actionName+" flag '"+flagName+"' successful", 10*time.Second)
store.Marker().ClearVisualMark()
}
}()
return nil
}
func submitFlagChange(aerc *widgets.Aerc, store *lib.MessageStore,
uids []uint32, flag models.Flag, newState bool,
wg *sync.WaitGroup, success *bool,
) {
store.Flag(uids, flag, newState, func(msg types.WorkerMessage) {
wg.Add(1)
switch msg := msg.(type) {
case *types.Done:
wg.Done()
case *types.Error:
aerc.PushError(msg.Error.Error())
*success = false
wg.Done()
}
})
}
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