package guac

import (
	"testing"
	"time"
)

func TestParse(t *testing.T) {
	t.Run("OKWithUnicode", func(t *testing.T) {
		valid := []byte("4.name,7.rocket🚀;")

		if instr, err := Parse(valid); err != nil {
			t.Fatal(err)
		} else if got, want := len(instr.Args), 1; got != want {
			t.Fatalf("Args=%v, want %v", got, want)
		} else if got, want := instr.Opcode, "name"; got != want {
			t.Fatalf("Opcode=%v, want %v", got, want)
		}
	})

	t.Run("ErrorInvalidLength", func(t *testing.T) {
		invalid := []byte("5.name,7.rocket*;")

		if _, err := Parse(invalid); err == nil {
			t.Fatal("expected error")
		} else if err.Error() != "guac.Parse: wrong pattern instruction" {
			t.Fatalf("unexpected error: %#v", err.Error())
		}
	})

	t.Run("Error", func(t *testing.T) {
		invalid := []byte("4.name")
		if _, err := Parse(invalid); err == nil {
			t.Fatal("expected error")
		}
	})
}

func TestInstruction_String(t *testing.T) {
	ins := NewInstruction("select", "hi", "hello", "asdf")
	if ins.String() != "6.select,2.hi,5.hello,4.asdf;" {
		t.Error("Unexpected result:", ins.String())
	}
	if ins.String() != "6.select,2.hi,5.hello,4.asdf;" {
		t.Error("Unexpected result:", ins.String())
	}

	ins = NewInstruction(InternalDataOpcode, "hi", "hello", "asdf")
	if ins.String() != "0.,2.hi,5.hello,4.asdf;" {
		t.Error("Unexpected result:", ins.String())
	}
	if ins.String() != "0.,2.hi,5.hello,4.asdf;" {
		t.Error("Unexpected result:", ins.String())
	}
}

func TestReadOne(t *testing.T) {
	stream := NewStream(&fakeConn{
		ToRead: []byte(`6.select,2.hi,5.hello,4.asdf;6.select,2.hi,5.hello,4.asdf;`),
	}, time.Minute)

	ins, err := ReadOne(stream)
	if err != nil {
		t.Fatal(err)
	}

	if ins.String() != "6.select,2.hi,5.hello,4.asdf;" {
		t.Error("Unexpected", ins.String())
	}
}