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package argvpb
// This is where the actual autocomplete happens
// lots of the fun magic is in here
import (
"errors"
"fmt"
"os"
"strings"
"time"
"go.wit.com/lib/ENV"
"go.wit.com/lib/cobol"
"go.wit.com/lib/config"
"go.wit.com/log"
durationpb "google.golang.org/protobuf/types/known/durationpb"
timestamppb "google.golang.org/protobuf/types/known/timestamppb"
)
func Autocomplete(dest any) *Argv {
var err error
me = new(AutoArgs) // todo: redo this
me.pb = new(Argv)
// set the start time of the binary
now := time.Now()
me.pb.Ctime = timestamppb.New(now)
// makes sure the application has the
// needed functions defined, otherwise panics
verifyApplication(dest)
// gets APPNAME, BUILDTIME and VERSION from the application
initAppname()
// parses os.Args into the protobuf
me.pb.parseOsArgs()
// initializes the lib/ENV library
ENV.Init(me.pb.AppInfo.APPNAME, me.pb.AppInfo.VERSION, cobol.Time(me.pb.AppInfo.BUILDTIME), me.pb.Real, GoodExit, BadExit)
// loads the argv autocomplete history file
all := NewArgvs()
fullname := config.MakeCacheFilename("argv", me.pb.AppInfo.APPNAME)
err = config.LoadFromFilename(all, fullname)
if err != nil {
// there is no history.
// todo: initialize the history file
// todo: check if this is automatically done already
}
// try to register bash args for go-args
// arg.Register(&ArgvBash)
// todo: figure this out
if me.guiFunc != nil {
// register gui args
me.guiFunc()
// log.Info("gui init")
} else {
// log.Info("no gui init")
}
// user is trying to setup bash or zsh autocomplete
// --bash or --zsh is the first os.Args
if me.setupAuto {
// --bash or --zsh was passed. try to configure bash-completion
MakeAutocompleteFiles(me.pb.AppInfo.APPNAME)
// never forget to run this our you will hate yourself and the choices you have made
os.Exit(0)
}
ENV.SetGlobal("argv", "real", fmt.Sprintf("%v", me.pb.Real))
for _, a := range me.pb.Real {
if strings.HasPrefix(a, "--") {
ENV.SetGlobal("argv", a, "true")
}
}
// not autocompleting. return go-arg & the application
if !me.isAuto {
// save the pb & history
all.Clone(me.pb)
errors.Join(err, all.Save())
// me.pp = arg.MustParse(dest)
me.err = me.mustParseFunc()
return me.pb
}
// EVERYTHING PAST HERE IS FOR AUTOCOMPLETE
// everything sent to STDOUT and STDERR matters past this point
// set the duration since the last auto complete
// find the last entry. this is dumb way to do it
me.last = new(Argv)
me.last.Ctime = timestamppb.New(time.Now().Add(-time.Second))
for found := range all.IterAll() {
me.last = found
}
dur := time.Since(me.last.Ctime.AsTime())
me.pb.Duration = durationpb.New(dur)
if me.debug {
// dump debug info
me.pb.PrintDebug()
all.PrintHistory()
}
// roll the autocomplete file
if all.Len() > 15 {
me.pb.Debugf("DEBUG: trim() history is over 100 len=%d vs new=%d", all.Len(), all.Len()-90)
all.Argvs = all.Argvs[all.Len()-10:]
// newall.Autos = all.Autos[0:10]
// for _, found := range all.Autos[0:10] {
// newall.Append(found)
// }
}
// turn on debugging if duration < 200 milliseconds
dur = me.pb.Duration.AsDuration()
if dur < time.Millisecond*200 {
me.debug = true
me.pb.Fast = true
// me.fastcmd = me.pb.GetCmd()
if me.last.Fast {
if me.pb.GetCmd() == me.last.GetCmd() {
// do the smart something here
}
}
}
flags := []string{}
for _, s := range me.pb.Real {
if s == "--autodebug" {
continue
}
if strings.TrimSpace(s) == "" {
// skip anything blank
continue
}
flags = append(flags, s)
}
if strings.HasPrefix(me.pb.Partial, "--argv") {
me.pb.SendString("--argvdebug --argvhelp")
os.Exit(0)
}
// use go-args to parse the structs so we can use them here
// me.pp, err = arg.ParseFlags(flags, dest)
if me.parseFlagsFunc == nil {
panic("argv.parseFlags() is nil")
}
if err := me.parseFlagsFunc(flags); err != nil {
log.Info("application parseFlags() err", err)
panic("argv.parseFlags() err. probably cmd doesn't really exist in struct")
}
if len(flags) == 0 {
// error is normal if there are no command line args
} else {
if err != nil {
// users has command line arguments that won't parse with go-args
me.pb.Debugf("DEBUG: Parse error: %v flags%v", err, flags)
}
}
// save now. this is near the end probably
all.Clone(me.pb)
errors.Join(err, all.Save())
lastarg := me.pb.Real[len(me.pb.Real)-1]
// this is a work in progress
if lastarg == "--gui" {
me.pb.Debugf("DEBUG: real=(%v) found --gui", me.pb.Real)
me.pb.SendString("andlabs gogui")
os.Exit(0)
} else {
// me.pb.Debugf("DEBUG: NO MATCH last='%s' found key '%s' = %s", me.last, key, val)
}
if me.pb.Fast {
if me.last.Fast {
os.Exit(0)
} else {
// this means the user is pressing tab. no longer doing stderr
if me.pb.GetCmd() == "" {
// me.pp.WriteHelp(os.Stderr)
me.writeHelpFunc()
} else {
// me.pp.WriteHelpForSubcommand(os.Stderr, me.pb.Cmd)
me.writeHelpForSubcommandFunc(me.pb.GetCmd())
}
}
} else {
}
if me.autoFunc == nil {
me.pb.SubCommand(me.pb.Real...)
} else {
me.autoFunc(me.pb) // run the autocomplete function the user made for their application
}
if me.debug {
// TODO:
// check here to see if there was any completion text sent
// if not, send "reset bash newline\n" to cause bash to redraw PS1 for the user
}
os.Exit(0)
return nil
}
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