package sbhpfv1_test

import (
	"bytes"
	"slices"
	"testing"

	sbhpfv1 "git.zervo.org/FLUX/GoSBHPF/SBHPFv1"
)

var (
	prop_ser_targetbytes = []byte{
		0x05,                         // Key length = 5
		0x0c,                         // Value type = string
		0x6f, 0x77, 0x6e, 0x65, 0x72, // Key = "owner"
		0x05, 0x00, // String length = 5
		0x7a, 0x65, 0x72, 0x76, 0x6f, // String = "zervo"
	}

	node_ser_targetbytes = []byte{
		// -- ROOT NODE: HEADER
		0x33, 0x00, 0x00, 0x00, // Node size = 33
		0x02, 0x00, // Property count = 2
		0x01, 0x00, // Child count = 1
		0x06, // Name length = 6
		// -- ROOT NODE: NAME
		0x70, 0x6c, 0x61, 0x79, 0x65, 0x72, // Node name = "player"
		// -- ROOT NODE: PROPERTIES
		// ROOT NODE -> PROPERTY A
		0x06,                               // Key length = 6
		0x0b,                               // Value type = bool
		0x61, 0x63, 0x74, 0x69, 0x76, 0x65, // Key = "active"
		0x01, // Value = true
		// ROOT NODE -> PROPERTY B
		0x05,                         // Key length = 5
		0x03,                         // Value type = 16-bit signed int
		0x6c, 0x65, 0x76, 0x65, 0x6c, // Key = "level"
		0x1b, 0x00, // Value = 27
		// -- ROOT NODE: CHILDREN
		// ROOT NODE -> CHILD NODE
		0x12, 0x00, 0x00, 0x00, // Node size = 12
		0x00, 0x00, // Property count = 0
		0x00, 0x00, // Child count = 0
		0x09,                                                 // Name length = 9
		0x69, 0x6e, 0x76, 0x65, 0x6e, 0x74, 0x6f, 0x72, 0x79, // Node name = "inventory"
	}

	full_ser_targetbytes = []byte{
		// -- FILE HEADER
		0x01, // Version flag = 1
		0x00, // Feature flag = 0
		// -- ROOT NODE: HEADER
		0x16, 0x00, 0x00, 0x00, // Node size = 16
		0x01, 0x00, // Property count = 1
		0x00, 0x00, // Child count = 0
		0x04, // Name length = 4
		// -- ROOT NODE: NAME
		0x75, 0x73, 0x65, 0x72, // Node name = "user"
		// -- ROOT NODE: PROPERTIES
		// ROOT NODE -> PROPERTY
		0x06,                               // Key length = 6
		0x0b,                               // Value type = bool
		0x61, 0x63, 0x74, 0x69, 0x76, 0x65, // Key = "active"
		0x01, // Value = true
	}
)

func TestPropertySerialization(t *testing.T) {
	prop := sbhpfv1.Property{
		Key:   "owner",
		Type:  sbhpfv1.TypeString,
		Value: "zervo",
	}

	var buf bytes.Buffer
	err := sbhpfv1.SerializeProperty(&buf, prop)
	if err != nil {
		t.Fatalf("Property serialization failed: %v", err)
	}

	if !slices.Equal(buf.Bytes(), prop_ser_targetbytes) {
		t.Fatalf("Property serialization generated bad data: %v", buf.Bytes())
	}
}

func TestNodeSerialization(t *testing.T) {
	prop_a := sbhpfv1.Property{
		Key:   "active",
		Type:  sbhpfv1.TypeBool,
		Value: true,
	}

	prop_b := sbhpfv1.Property{
		Key:   "level",
		Type:  sbhpfv1.TypeInt16,
		Value: int16(27),
	}

	child_node := sbhpfv1.Node{
		Name: "inventory",
	}

	node := sbhpfv1.Node{
		Name: "player",
		Properties: []sbhpfv1.Property{
			prop_a,
			prop_b,
		},
		Children: []*sbhpfv1.Node{
			&child_node,
		},
	}

	var buf bytes.Buffer
	err := sbhpfv1.SerializeNodeBuffered(&buf, &node)
	if err != nil {
		t.Fatalf("Node serialization failed: %v", err)
	}

	if !slices.Equal(buf.Bytes(), node_ser_targetbytes) {
		t.Fatalf("Node serialization generated bad data: %v", buf.Bytes())
	}
}

func TestFullSerialization(t *testing.T) {
	prop := sbhpfv1.Property{
		Key:   "active",
		Type:  sbhpfv1.TypeBool,
		Value: true,
	}

	node := sbhpfv1.Node{
		Name: "user",
		Properties: []sbhpfv1.Property{
			prop,
		},
	}

	var buf bytes.Buffer
	err := sbhpfv1.SerializeBuffered(&buf, &node)
	if err != nil {
		t.Fatalf("Full tree serialization failed: %v", err)
	}

	if !slices.Equal(buf.Bytes(), full_ser_targetbytes) {
		t.Fatalf("Full tree serialization generated bad data: %v", buf.Bytes())
	}
}