package meter

import (
	"context"
	"testing"

	"github.com/evcc-io/evcc/util"
	"github.com/stretchr/testify/require"
)

func TestBatteryCapacity(t *testing.T) {
	ctx := context.TODO()

	// static value
	{
		var cc batteryCapacityCtx
		require.NoError(t, util.DecodeOther(map[string]any{"capacity": 10}, &cc))
		g, err := cc.Decorator(ctx)
		require.NoError(t, err)
		require.NotNil(t, g)
		require.Equal(t, 10.0, g())
	}

	// zero value is treated as not configured
	{
		var cc batteryCapacityCtx
		require.NoError(t, util.DecodeOther(map[string]any{"capacity": 0}, &cc))
		g, err := cc.Decorator(ctx)
		require.NoError(t, err)
		require.Nil(t, g)
	}

	// unset is not configured
	{
		var cc batteryCapacityCtx
		g, err := cc.Decorator(ctx)
		require.NoError(t, err)
		require.Nil(t, g)
	}

	// float plugin
	{
		var cc batteryCapacityCtx
		require.NoError(t, util.DecodeOther(map[string]any{
			"capacity": map[string]any{
				"source": "const",
				"value":  "12.5",
			},
		}, &cc))
		g, err := cc.Decorator(ctx)
		require.NoError(t, err)
		require.NotNil(t, g)
		require.Equal(t, 12.5, g())
	}
}

func TestBatterySocLimits(t *testing.T) {
	other := map[string]any{
		"minsoc": 1,
		"maxsoc": 99,
	}

	expected := batterySocLimits{
		MinSoc: 1,
		MaxSoc: 99,
	}

	{
		var res batterySocLimits
		require.NoError(t, util.DecodeOther(other, &res))
		require.Equal(t, expected, res)
	}

	{
		var res struct {
			batterySocLimits `mapstructure:",squash"`
		}
		require.NoError(t, util.DecodeOther(other, &res))
		require.Equal(t, expected, res.batterySocLimits)
	}

	{
		var res struct {
			BatterySocLimits batterySocLimits `mapstructure:",squash"`
		}
		require.NoError(t, util.DecodeOther(other, &res))
		require.Equal(t, expected, res.BatterySocLimits)
	}

	{
		res := struct {
			batterySocLimits `mapstructure:",squash"`
		}{
			batterySocLimits: batterySocLimits{
				MinSoc: 20,
				MaxSoc: 95,
			},
		}
		require.NoError(t, util.DecodeOther(other, &res))
		require.Equal(t, expected, res.batterySocLimits)
	}

	{
		res := struct {
			pvMaxACPower     `mapstructure:",squash"`
			batterySocLimits `mapstructure:",squash"`
		}{
			batterySocLimits: batterySocLimits{
				MinSoc: 20,
				MaxSoc: 95,
			},
		}
		require.NoError(t, util.DecodeOther(other, &res))
		require.Equal(t, expected, res.batterySocLimits)
	}
}