package result

import (
	"context"
	"queryorchestration/internal/database"
	"queryorchestration/internal/database/repository"
	"queryorchestration/internal/query"
	resultprocessor "queryorchestration/internal/query/result/processor"
	jsonextractor "queryorchestration/internal/query/types/jsonExtractor"
	"queryorchestration/internal/serviceconfig"
	"testing"

	"github.com/google/uuid"
	"github.com/jackc/pgx/v5/pgtype"
	"github.com/pashagolub/pgxmock/v3"
	"github.com/stretchr/testify/assert"
)

func TestProcess(t *testing.T) {
	ctx := context.Background()

	pool, err := pgxmock.NewPool()
	if err != nil {
		t.Fatalf("failed to open pgxmock database: %v", err)
	}
	cfg := &serviceconfig.BaseConfig{}
	cfg.DBPool = pool
	cfg.DBQueries = repository.New(pool)

	svc := Service{
		cfg: cfg,
		svc: &Services{
			Query: query.New(cfg),
		},
	}

	qcfg := "{\"path\":\"examplekey\"}"
	query := &resultprocessor.Query{
		ID:               uuid.New(),
		Version:          2,
		RequiredQueryIDs: &[]uuid.UUID{uuid.New()},
		Config:           &qcfg,
	}
	params := Process{
		DocumentID:   uuid.New(),
		QueryID:      query.ID,
		QueryVersion: query.Version,
	}

	pool.ExpectQuery("name: GetQueryWithVersion :one").WithArgs(database.MustToDBUUID(query.ID), query.Version).WillReturnRows(
		pgxmock.NewRows([]string{"id", "type", "activeVersion", "latestVersion", "config", "requiredIds"}).
			AddRow(database.MustToDBUUID(query.ID), repository.QuerytypeJsonExtractor, query.Version, query.Version, []byte(*query.Config), database.MustToDBUUIDArray(*query.RequiredQueryIDs)),
	)
	pool.ExpectQuery("name: ListQueryRequirementValues :many").WithArgs(database.MustToDBUUID(params.DocumentID), database.MustToDBUUID(query.ID), query.Version).
		WillReturnRows(
			pgxmock.NewRows([]string{"queryId", "type", "value"}).
				AddRow(database.MustToDBUUID(query.ID), repository.QuerytypeContextFull, "{\"examplekey\":\"example_value\"}"),
		)
	pool.ExpectQuery("name: GetQueryConfig :one").WithArgs(database.MustToDBUUID(query.ID), query.Version).WillReturnRows(
		pgxmock.NewRows([]string{"id", "config"}).
			AddRow(pgtype.UUID{}, []byte(qcfg)),
	)

	val, err := svc.Process(ctx, &params)
	assert.NoError(t, err)
	assert.NotNil(t, val)
	assert.Equal(t, "example_value", val.GetStoreValue())
}

func TestListRequiredValue(t *testing.T) {
	ctx := context.Background()

	pool, err := pgxmock.NewPool()
	if err != nil {
		t.Fatalf("failed to open pgxmock database: %v", err)
	}
	cfg := &serviceconfig.BaseConfig{}
	cfg.DBPool = pool
	cfg.DBQueries = repository.New(pool)

	svc := Service{
		cfg: cfg,
	}

	pr, err := svc.listRequiredValues(ctx, nil, nil)
	assert.NoError(t, err)
	assert.Nil(t, pr)

	pr, err = svc.listRequiredValues(ctx, &Process{}, &resultprocessor.Query{})
	assert.NoError(t, err)
	assert.Nil(t, pr)

	pr, err = svc.listRequiredValues(ctx, &Process{},
		&resultprocessor.Query{
			RequiredQueryIDs: &[]uuid.UUID{},
		},
	)
	assert.NoError(t, err)
	assert.Nil(t, pr)

	query := &resultprocessor.Query{
		ID:               uuid.New(),
		Version:          2,
		RequiredQueryIDs: &[]uuid.UUID{uuid.New()},
	}
	params := Process{
		DocumentID:   uuid.New(),
		QueryID:      query.ID,
		QueryVersion: query.Version,
	}

	pool.ExpectQuery("name: ListQueryRequirementValues :many").WithArgs(database.MustToDBUUID(params.DocumentID), database.MustToDBUUID(query.ID), query.Version).
		WillReturnRows(
			pgxmock.NewRows([]string{"queryId", "type", "value"}).
				AddRow(database.MustToDBUUID((*query.RequiredQueryIDs)[0]), repository.QuerytypeJsonExtractor, "example_value"),
		)

	pr, err = svc.listRequiredValues(ctx, &params, query)
	assert.NoError(t, err)
	assert.ElementsMatch(t, []resultprocessor.Value{
		jsonextractor.NewResult("example_value"),
	}, *pr)
}

func TestGetProcessor(t *testing.T) {
	svc := Service{}

	pr, err := svc.getProcessor(resultprocessor.TypeJsonExtractor)
	assert.NoError(t, err)
	assert.NotNil(t, pr)

	pr, err = svc.getProcessor(resultprocessor.TypeContextFull)
	assert.NoError(t, err)
	assert.NotNil(t, pr)

	_, err = svc.getProcessor(resultprocessor.Type(-1))
	assert.Error(t, err)
}

func TestParseQueryRequirementValueArray(t *testing.T) {
	in := []*repository.ListQueryRequirementValuesRow{
		{
			Queryid: database.MustToDBUUID(uuid.New()),
			Value:   "example_value",
			Type:    repository.QuerytypeJsonExtractor,
		},
	}

	out, err := parseQueryRequirementValueArray(in)
	assert.NoError(t, err)
	assert.ElementsMatch(t, []resultprocessor.Value{
		jsonextractor.NewResult("example_value"),
	}, *out)
}