package result

import (
	"context"
	"queryorchestration/internal/database"
	"queryorchestration/internal/database/repository"
	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,
	}

	qcfg := "{\"path\":\"examplekey\"}"
	params := Process{
		DocumentID:      uuid.New(),
		MinCleanVersion: 1,
		MinTextVersion:  3,
		Query: &resultprocessor.Query{
			ID:      uuid.New(),
			Version: 2,
			Config:  &qcfg,
			RequiredQueryIDs: &[]uuid.UUID{
				uuid.New(),
			},
		},
	}

	pool.ExpectQuery("name: ListQueryRequirementValues :many").WithArgs(database.MustToDBUUID(params.Query.ID), params.Query.Version, database.MustToDBUUID(params.DocumentID), params.MinCleanVersion, params.MinTextVersion).
		WillReturnRows(
			pgxmock.NewRows([]string{"queryId", "value", "type"}).
				AddRow(database.MustToDBUUID((*params.Query.RequiredQueryIDs)[0]), "{\"examplekey\":\"example_value\"}", repository.QuerytypeContextFull),
		)
	pool.ExpectQuery("name: GetQueryConfig :one").WithArgs(database.MustToDBUUID(params.Query.ID), params.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)
	assert.NoError(t, err)
	assert.Nil(t, pr)

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

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

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

	params := Process{
		DocumentID:      uuid.New(),
		MinCleanVersion: 1,
		MinTextVersion:  3,
		Query: &resultprocessor.Query{
			ID:      uuid.New(),
			Version: 2,
			RequiredQueryIDs: &[]uuid.UUID{
				uuid.New(),
			},
		},
	}

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

	pr, err = svc.listRequiredValues(ctx, &params)
	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)
}