package plugin

import (
	"github.com/zclconf/go-cty/cty"

	commonv1 "code.icb4dc0.de/buildr/api/generated/common/v1"
)

func unwrap(val cty.Value) *commonv1.ModuleSpec_Value {
	switch {
	case val.Type().Equals(cty.String):
		return &commonv1.ModuleSpec_Value{
			Type: commonv1.ModuleSpec_ValueTypeSingle,
			SingleValue: &commonv1.ModuleSpec_Value_StringValue{
				StringValue: val.AsString(),
			},
		}

	case val.Type().Equals(cty.Bool):
		return &commonv1.ModuleSpec_Value{
			Type: commonv1.ModuleSpec_ValueTypeSingle,
			SingleValue: &commonv1.ModuleSpec_Value_BoolValue{
				BoolValue: val.True(),
			},
		}
	case val.Type().Equals(cty.Number):
		f, _ := val.AsBigFloat().Float64()
		return &commonv1.ModuleSpec_Value{
			Type: commonv1.ModuleSpec_ValueTypeSingle,
			SingleValue: &commonv1.ModuleSpec_Value_DoubleValue{
				DoubleValue: f,
			},
		}
	case val.Type().IsTupleType():
		//nolint:gocritic // eventually, there will be more cases
		switch {
		case val.Type().TupleElementTypes()[0].Equals(cty.String):
			specVal := &commonv1.ModuleSpec_Value{
				Type: commonv1.ModuleSpec_ValueTypeStringSlice,
			}
			for _, v := range val.AsValueSlice() {
				specVal.StringValues = append(specVal.StringValues, v.AsString())
			}
			return specVal
		}
	case val.Type().IsMapType():
		valueMap := val.AsValueMap()
		specVal := &commonv1.ModuleSpec_Value{
			Type:         commonv1.ModuleSpec_ValueTypeMap,
			ComplexValue: make(map[string]*commonv1.ModuleSpec_Value, len(valueMap)),
		}
		//nolint:gocritic // eventually, there will be more cases
		switch {
		case val.Type().MapElementType().Equals(cty.String):
			for k, v := range valueMap {
				specVal.ComplexValue[k] = &commonv1.ModuleSpec_Value{
					Type: commonv1.ModuleSpec_ValueTypeSingle,
					SingleValue: &commonv1.ModuleSpec_Value_StringValue{
						StringValue: v.AsString(),
					},
				}
			}
		}
		return specVal
	case val.Type().IsObjectType():
		valueMap := val.AsValueMap()
		specVal := &commonv1.ModuleSpec_Value{
			Type:         commonv1.ModuleSpec_ValueTypeObject,
			ComplexValue: make(map[string]*commonv1.ModuleSpec_Value, len(valueMap)),
		}

		for k, v := range valueMap {
			specVal.ComplexValue[k] = unwrap(v)
		}
		return specVal
	default:
		panic("none primitive values are not supported right now")
	}

	return nil
}