package main

import (
	"fmt"
	"io"
)

// new idea. useful? TODO: look at this again in 1y
func (msg *MsgName) insertBy(w io.Writer, FRUIT, APPLES, APPLE string, COLOR string) {
	LOCK := msg.getLockname("x")

	fmt.Fprintln(w, "// returns an "+APPLE+" if "+COLOR+" matches, otherwise create")
	fmt.Fprintln(w, "func (x *"+FRUIT+") InsertBy"+COLOR+" (y string) *"+APPLE+" {")
	fmt.Fprintln(w, "	"+LOCK+".Lock()")
	fmt.Fprintln(w, "	defer "+LOCK+".Unlock()")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	for _, p := range x."+APPLES+" {")
	fmt.Fprintln(w, "		if p."+COLOR+" == y {")
	fmt.Fprintln(w, "			return p")
	fmt.Fprintln(w, "		}")
	fmt.Fprintln(w, "	}")
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "	z := new("+APPLE+")")
	fmt.Fprintln(w, "	z."+COLOR+" = y")
	fmt.Fprintln(w, "	x."+APPLES+" = append(x."+APPLES+", z)")
	fmt.Fprintln(w, "	return z")
	fmt.Fprintln(w, "}")
	fmt.Fprintln(w, "")
}