package protocol_test

import (
	"testing"

	"code.icb4dc0.de/buildr/wasi-module-sdk-go/protocol"
	rpcv1 "code.icb4dc0.de/buildr/wasi-module-sdk-go/protocol/generated/rpc/v1"
)

func TestUnmarshal_Bool_Success(t *testing.T) {
	target := struct {
		Delete bool
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Delete": {
				Type: rpcv1.ModuleSpec_ValueTypeSingle,
				SingleValue: &rpcv1.ModuleSpec_Value_BoolValue{
					BoolValue: true,
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if !target.Delete {
		t.Errorf("Expected Delete to be true")
	}
}

func TestUnmarshal_Bool_Err(t *testing.T) {
	target := struct {
		Delete string
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Delete": {
				Type: rpcv1.ModuleSpec_ValueTypeSingle,
				SingleValue: &rpcv1.ModuleSpec_Value_BoolValue{
					BoolValue: true,
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err == nil {
		t.Errorf("Expected error")
	} else {
		t.Log(err.Error())
	}
}

func TestUnmarshal_Bool_Slice_Success(t *testing.T) {
	target := struct {
		Delete []bool
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Delete": {
				Type:       rpcv1.ModuleSpec_ValueTypeBoolSlice,
				BoolValues: []bool{true},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if len(target.Delete) < 1 {
		t.Errorf("Expected Delete to have at least one element")
	} else if !target.Delete[0] {
		t.Errorf("Expected Delete[0] to be true")
	}
}

func TestUnmarshal_Bool_Slice_Err(t *testing.T) {
	target := struct {
		Delete []string
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Delete": {
				Type:       rpcv1.ModuleSpec_ValueTypeBoolSlice,
				BoolValues: []bool{true},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err == nil {
		t.Errorf("Expected error")
	} else {
		t.Log(err.Error())
	}
}

func TestUnmarshal_String_Success(t *testing.T) {
	target := struct {
		Name string
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Name": {
				Type: rpcv1.ModuleSpec_ValueTypeSingle,
				SingleValue: &rpcv1.ModuleSpec_Value_StringValue{
					StringValue: "Ted",
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if target.Name != "Ted" {
		t.Errorf("Expected Name to be 'Ted'")
	}
}

func TestUnmarshal_String_Err(t *testing.T) {
	target := struct {
		Name int
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Name": {
				Type: rpcv1.ModuleSpec_ValueTypeSingle,
				SingleValue: &rpcv1.ModuleSpec_Value_StringValue{
					StringValue: "Ted",
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err == nil {
		t.Errorf("Expected error")
	} else {
		t.Log(err.Error())
	}
}

func TestUnmarshal_String_Slice_Success(t *testing.T) {
	target := struct {
		Names []string
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Names": {
				Type:         rpcv1.ModuleSpec_ValueTypeStringSlice,
				StringValues: []string{"Ted"},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if len(target.Names) < 1 {
		t.Errorf("Expected Names to have at least one element")
	} else if target.Names[0] != "Ted" {
		t.Errorf("Expected Names[0] to be 'Ted'")
	}
}

func TestUnmarshal_String_Slice_Err(t *testing.T) {
	target := struct {
		Names []int
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Names": {
				Type:         rpcv1.ModuleSpec_ValueTypeStringSlice,
				StringValues: []string{"Ted"},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err == nil {
		t.Errorf("Expected error")
	} else {
		t.Log(err.Error())
	}
}

func TestUnmarshal_Int_Success(t *testing.T) {
	target := struct {
		Age int
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Age": {
				Type: rpcv1.ModuleSpec_ValueTypeSingle,
				SingleValue: &rpcv1.ModuleSpec_Value_IntValue{
					IntValue: 42,
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if target.Age != 42 {
		t.Errorf("Expected Age to be 42")
	}
}

func TestUnmarshal_Int_Err(t *testing.T) {
	target := struct {
		Age string
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Age": {
				Type: rpcv1.ModuleSpec_ValueTypeSingle,
				SingleValue: &rpcv1.ModuleSpec_Value_IntValue{
					IntValue: 42,
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err == nil {
		t.Errorf("Expected error")
	} else {
		t.Log(err.Error())
	}
}

func TestUnmarshal_Int_Slice_Success(t *testing.T) {
	target := struct {
		Ages []int
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Ages": {
				Type:      rpcv1.ModuleSpec_ValueTypeIntSlice,
				IntValues: []int64{42},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if len(target.Ages) < 1 {
		t.Errorf("Expected Ages to have at least one element")
	} else if target.Ages[0] != 42 {
		t.Errorf("Expected Ages[0] to be 42")
	}
}

func TestUnmarshal_Int_Slice_Err(t *testing.T) {
	target := struct {
		Ages []string
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Ages": {
				Type:      rpcv1.ModuleSpec_ValueTypeIntSlice,
				IntValues: []int64{42},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err == nil {
		t.Errorf("Expected error")
	} else {
		t.Log(err.Error())
	}
}

func TestUnmarshal_Double_Success(t *testing.T) {
	target := struct {
		Pi float64
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Pi": {
				Type: rpcv1.ModuleSpec_ValueTypeSingle,
				SingleValue: &rpcv1.ModuleSpec_Value_DoubleValue{
					DoubleValue: 3.14,
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if target.Pi-3.14 > 0.0000001 {
		t.Errorf("Expected Pi to be 3.14")
	}
}

func TestUnmarshal_Double_Err(t *testing.T) {
	target := struct {
		Pi string
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Pi": {
				Type: rpcv1.ModuleSpec_ValueTypeSingle,
				SingleValue: &rpcv1.ModuleSpec_Value_DoubleValue{
					DoubleValue: 3.14,
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err == nil {
		t.Errorf("Expected error")
	} else {
		t.Log(err.Error())
	}
}

func TestUnmarshal_Double_Slice_Success(t *testing.T) {
	target := struct {
		Pis []float64
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Pis": {
				Type:         rpcv1.ModuleSpec_ValueTypeDoubleSlice,
				DoubleValues: []float64{3.14},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if len(target.Pis) < 1 {
		t.Errorf("Expected Pis to have at least one element")
	} else if target.Pis[0]-3.14 > 0.0000001 {
		t.Errorf("Expected Pis[0] to be 3.14")
	}
}

func TestUnmarshal_Double_Slice_Err(t *testing.T) {
	target := struct {
		Pis []string
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Pis": {
				Type:         rpcv1.ModuleSpec_ValueTypeDoubleSlice,
				DoubleValues: []float64{3.14},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err == nil {
		t.Errorf("Expected error")
	} else {
		t.Log(err.Error())
	}
}

func TestUnmarshal_NestedStruct_Success(t *testing.T) {
	target := struct {
		Address struct {
			City string
		}
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Address": {
				Type: rpcv1.ModuleSpec_ValueTypeObject,
				ComplexValue: map[string]*rpcv1.ModuleSpec_Value{
					"City": {
						Type: rpcv1.ModuleSpec_ValueTypeSingle,
						SingleValue: &rpcv1.ModuleSpec_Value_StringValue{
							StringValue: "New York",
						},
					},
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if target.Address.City != "New York" {
		t.Errorf("Expected City to be 'New York'")
	}
}

func TestUnmarshal_NestedStructPointer_Success(t *testing.T) {
	target := struct {
		Address *struct {
			City string
		}
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Address": {
				Type: rpcv1.ModuleSpec_ValueTypeObject,
				ComplexValue: map[string]*rpcv1.ModuleSpec_Value{
					"City": {
						Type: rpcv1.ModuleSpec_ValueTypeSingle,
						SingleValue: &rpcv1.ModuleSpec_Value_StringValue{
							StringValue: "New York",
						},
					},
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if target.Address.City != "New York" {
		t.Errorf("Expected City to be 'New York'")
	}
}

func TestUnmarshal_Map_Success(t *testing.T) {
	target := struct {
		Values map[string]string
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"Values": {
				Type: rpcv1.ModuleSpec_ValueTypeMap,
				ComplexValue: map[string]*rpcv1.ModuleSpec_Value{
					"City": {
						Type: rpcv1.ModuleSpec_ValueTypeSingle,
						SingleValue: &rpcv1.ModuleSpec_Value_StringValue{
							StringValue: "New York",
						},
					},
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if target.Values["City"] != "New York" {
		t.Errorf("Expected City to be 'New York'")
	}
}

func TestUnmarshal_NestedMap_Success(t *testing.T) {
	target := struct {
		City struct {
			Labels map[string]string
		}
	}{}

	spec := &rpcv1.ModuleSpec{
		Values: map[string]*rpcv1.ModuleSpec_Value{
			"City": {
				Type: rpcv1.ModuleSpec_ValueTypeObject,
				ComplexValue: map[string]*rpcv1.ModuleSpec_Value{
					"Labels": {
						Type: rpcv1.ModuleSpec_ValueTypeMap,
						ComplexValue: map[string]*rpcv1.ModuleSpec_Value{
							"Region": {
								Type: rpcv1.ModuleSpec_ValueTypeSingle,
								SingleValue: &rpcv1.ModuleSpec_Value_StringValue{
									StringValue: "west",
								},
							},
						},
					},
				},
			},
		},
	}

	if err := protocol.Unmarshal(spec, &target); err != nil {
		t.Errorf("Failed to unmarshal: %v", err)
	}

	if target.City.Labels["Region"] != "west" {
		t.Errorf("Expected 'Region' to be 'west'")
	}
}