package prep

// initializes logging and command line options

import (
	"fmt"
	"os"
	"strings"

	"go.wit.com/dev/alexflint/arg"
	"go.wit.com/lib/cobol"
)

/*
This struct can be used with the go-arg package. These
are the generic default command line arguments for the 'GUI' package
*/
var argBash ArgsBash

type ArgsBash struct {
	Bash bool `arg:"--bash"                               help:"generate bash completion"`
}

// try this struct out (?)
var myAuto *AutoArgs

// this is a work in progress
type AutoArgs struct {
	id        int                     // should be unique
	hidden    bool                    // don't update the toolkits when it's hidden
	Auto      func([]string)          // the function for shell autocomplete
	appName   string                  // a good way to track the name of the binary ?
	examples  func() string           // some examples
	appExit   func()                  // app Exit()
	buildtime func() (string, string) // some examples
	pp        *arg.Parser             // for parsing the command line args.  Yay to alexf lint!
	autoFunc  func(*Auto)             // also a function for autocomplete
}

// print out auto complete debugging info
func (pb *Auto) PrintDebug() {
	dur := pb.Duration.AsDuration()
	pb.Debugf("AUTOCOMPLETE: arg0='%s' arg1='%s' partial='%s' cmd='%s' age=%s argv=%v\n", pb.Arg0, pb.Arg1, pb.Partial, pb.Cmd, cobol.FormatDuration(dur), pb.Argv)
}

func (pb *Auto) WriteHelp() {
	myAuto.pp.WriteHelp(os.Stdout)
}

func (pb *Auto) Debugf(fmts string, parts ...any) {
	fmts = strings.TrimSpace(fmts)
	fmts += "\n"
	// NOTE: env doesn't work probably most (all?) the time because bash
	// doesn't send all the ENV to autocomplete. so, trap on a "--autodebug" command line arg
	if os.Getenv("AUTOCOMPLETE_VERBOSE") == "true" || pb.Debug {
		if !pb.Newline {
			fmt.Fprintf(os.Stderr, "\n")
			pb.Newline = true
		}
		fmt.Fprintf(os.Stderr, fmts, parts...)
	} else {
		// fmt.Fprintf(os.Stderr, "NOT DOING ANYTHING\n")
	}
}

// returns the last command (is blank if the current arg is not blank)
func GetLast(cur string, argv []string) string {
	if cur != "''" {
		return ""
	}
	for _, s := range argv {
		if strings.HasPrefix(s, "-") {
			continue
		}
		return s
	}
	return ""
}

// returns the name of the executable registered for shell autocomplete
func AppName() string {
	return myAuto.appName
}