package db_test

import (
	"context"
	"strings"
	"testing"

	"github.com/Masterminds/semver"
	"github.com/go-flucky/flucky/pkg/config"
	"github.com/go-flucky/flucky/pkg/storage/db"
	"github.com/go-flucky/flucky/pkg/types"
	"github.com/go-flucky/flucky/test/goldenfiles"
	"github.com/stretchr/testify/require"
)

type test struct {
	Name string
	Test func(*testing.T)
}

var (
	database db.Database

	postgresContainerImage string = "docker.io/postgres/postgres"

	postgresSettings = &config.DatabaseSettings{
		Vendor:   config.VendorPostgreSQL,
		Host:     "localhost",
		Port:     "5432",
		User:     "postgres",
		Password: "postgres",
		Database: "postgres",
	}

	goldenDevicesFilePath        string = "test/goldenfiles/json/goldenDevices.json"
	goldenSensorsFilePath        string = "test/goldenfiles/json/goldenSensors.json"
	goldenMeasuredValuesFilePath string = "test/goldenfiles/json/goldenMeasuredValuesUncompressedRounded.json"
	goldenPressuresFilePath      string = "test/goldenfiles/json/goldenPressuresUncompressedRounded.json"
	goldenHumiditiesFilePath     string = "test/goldenfiles/json/goldenHumiditiesUncompressedRounded.json"
	goldenTemperaturesFilePath   string = "test/goldenfiles/json/goldenTemperaturesUncompressedRounded.json"

	goldenDevices        []*types.Device
	goldenSensors        []*types.Sensor
	goldenMeasuredValues []*types.MeasuredValue
	goldenPressures      []*types.MeasuredValue
	goldenHumidites      []*types.MeasuredValue
	goldenTemperatures   []*types.MeasuredValue
)

func load(t *testing.T) {
	require := require.New(t)

	d, err := goldenfiles.GetGoldenDevices(goldenDevicesFilePath)
	require.NoError(err)
	goldenDevices = d

	s, err := goldenfiles.GetGoldenSensors(goldenSensorsFilePath)
	require.NoError(err)
	goldenSensors = s

	hum, err := goldenfiles.GetGoldenMeasuredValues(goldenHumiditiesFilePath)
	require.NoError(err)
	goldenHumidites = hum

	mv, err := goldenfiles.GetGoldenMeasuredValues(goldenMeasuredValuesFilePath)
	require.NoError(err)
	goldenMeasuredValues = mv

	pres, err := goldenfiles.GetGoldenMeasuredValues(goldenPressuresFilePath)
	require.NoError(err)
	goldenPressures = pres

	temp, err := goldenfiles.GetGoldenMeasuredValues(goldenTemperaturesFilePath)
	require.NoError(err)
	goldenTemperatures = temp

}

func TestPostgres(t *testing.T) {
	require := require.New(t)

	load(t)

	db, err := db.New(postgresSettings)
	database = db
	require.Nil(err)

	tests := []*test{
		&test{
			Name: "schema",
			Test: testSchemaCreate,
		},
		&test{
			Name: "insertDevices",
			Test: testInsertDevices,
		},
		&test{
			Name: "insertSensors",
			Test: testInsertSensors,
		},
		&test{
			Name: "insertHumidity",
			Test: testInsertHumidity,
		},
		&test{
			Name: "insertPressure",
			Test: testInsertPressure,
		},
		&test{
			Name: "insertTemperatures",
			Test: testInsertTemperatures,
		},
		&test{
			Name: "deleteHumidities",
			Test: testDeleteHumidity,
		},
		&test{
			Name: "deletePressures",
			Test: testDeletePressures,
		},
		&test{
			Name: "deleteTemperatures",
			Test: testDeleteTemperatures,
		},
		&test{
			Name: "insertMeasuredValues",
			Test: testInsertMeasuredValues,
		},
		&test{
			Name: "deleteMeasuredValues",
			Test: testDeleteMeasuredValues,
		},
		&test{
			Name: "deleteSensors",
			Test: testDeleteSensors,
		},
		&test{
			Name: "deleteDevices",
			Test: testDeleteDevices,
		},
	}

	for _, test := range tests {
		t.Run(test.Name, test.Test)
	}
}

func testSchemaCreate(t *testing.T) {
	require := require.New(t)

	homePath := "pkg/storage/db/sql/psql/schema"
	sqlAssetFiles, err := db.AssetDir(homePath)
	require.NoError(err)

	ctx := context.Background()
	for _, sqlAssetFile := range sqlAssetFiles {
		fromVersion, err := semver.NewVersion(strings.ReplaceAll(sqlAssetFile, ".sql", ""))
		require.NoError(err)
		err = database.Schema(ctx, fromVersion)
		require.NoError(err)
	}
}

func testInsertDevices(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.InsertDevices(ctx, goldenDevices)
	require.NoError(err)
	for _, goldenDevice := range goldenDevices {
		testDevice, err := database.SelectDeviceByID(ctx, goldenDevice.DeviceID)
		require.NoError(err)
		goldenfiles.CompareMeasuredValues(t, goldenDevice, testDevice)
	}
}

func testInsertSensors(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.InsertSensors(ctx, goldenSensors)
	require.NoError(err)
	for _, goldenSensor := range goldenSensors {
		testSensor, err := database.SelectSensorByID(ctx, goldenSensor.SensorID)
		require.NoError(err)
		goldenfiles.CompareMeasuredValues(t, goldenSensor, testSensor)
	}
}

func testInsertHumidity(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.InsertMeasuredValues(ctx, goldenHumidites)
	require.NoError(err)
	for _, goldenHumidity := range goldenHumidites {
		testHumidity, err := database.SelectHumidityByID(ctx, goldenHumidity.ID)
		require.NoError(err)
		goldenfiles.CompareMeasuredValues(t, []*types.MeasuredValue{testHumidity}, []*types.MeasuredValue{testHumidity})
	}
}

func testInsertMeasuredValues(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.InsertMeasuredValues(ctx, goldenMeasuredValues)
	require.NoError(err)
	for _, goldenMeasuredValue := range goldenMeasuredValues {
		testMeasuredValue, err := database.SelectMeasuredValuesByIDAndType(ctx, goldenMeasuredValue.ID, goldenMeasuredValue.ValueType)
		require.NoError(err)
		goldenfiles.CompareMeasuredValues(t, []*types.MeasuredValue{goldenMeasuredValue}, []*types.MeasuredValue{testMeasuredValue})
	}
}

func testInsertPressure(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.InsertMeasuredValues(ctx, goldenPressures)
	require.NoError(err)
	for _, goldenPressure := range goldenPressures {
		testPressure, err := database.SelectPressureByID(ctx, goldenPressure.ID)
		require.NoError(err)
		goldenfiles.CompareMeasuredValues(t, []*types.MeasuredValue{testPressure}, []*types.MeasuredValue{testPressure})
	}
}

func testInsertTemperatures(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.InsertMeasuredValues(ctx, goldenTemperatures)
	require.NoError(err)
	for _, goldenTemperature := range goldenTemperatures {
		testTemperature, err := database.SelectTemperatureByID(ctx, goldenTemperature.ID)
		require.NoError(err)
		goldenfiles.CompareMeasuredValues(t, []*types.MeasuredValue{goldenTemperature}, []*types.MeasuredValue{testTemperature})
	}
}

func testDeleteDevices(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.DeleteDevices(ctx, goldenDevices)
	require.NoError(err)
	for _, goldenDevice := range goldenDevices {
		_, err := database.SelectDeviceByID(ctx, goldenDevice.DeviceID)
		require.Error(err)
	}
}

func testDeleteSensors(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.DeleteSensors(ctx, goldenSensors)
	require.NoError(err)
	for _, goldenSensor := range goldenSensors {
		_, err := database.SelectDeviceByID(ctx, goldenSensor.SensorID)
		require.Error(err)
	}
}

func testDeleteHumidity(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.DeleteMeasuredValues(ctx, goldenHumidites)
	require.NoError(err)
	for _, goldenHumidity := range goldenHumidites {
		_, err := database.SelectHumidityByID(ctx, goldenHumidity.ID)
		require.Error(err)
	}
}

func testDeleteMeasuredValues(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.DeleteMeasuredValues(ctx, goldenMeasuredValues)
	require.NoError(err)
	for _, goldenMeasuredValue := range goldenMeasuredValues {
		_, err := database.SelectPressureByID(ctx, goldenMeasuredValue.ID)
		require.Error(err)
	}
}

func testDeletePressures(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.DeleteMeasuredValues(ctx, goldenPressures)
	require.NoError(err)
	for _, goldenPressure := range goldenPressures {
		_, err := database.SelectPressureByID(ctx, goldenPressure.ID)
		require.Error(err)
	}
}

func testDeleteTemperatures(t *testing.T) {
	require := require.New(t)
	ctx := context.Background()
	err := database.DeleteMeasuredValues(ctx, goldenTemperatures)
	require.NoError(err)
	for _, goldenTemperature := range goldenTemperatures {
		_, err := database.SelectTemperatureByID(ctx, goldenTemperature.ID)
		require.Error(err)
	}
}