package queryqueue

import (
	"context"
	"queryorchestration/internal/collector"
	"queryorchestration/internal/database"
	"queryorchestration/internal/database/repository"
	queryprocessor "queryorchestration/internal/queryProcessor"
	"queryorchestration/internal/result"
	"testing"

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

func TestGetUnsyncedQueries(t *testing.T) {
	queryOne := &queryprocessor.Query{
		ID:      uuid.New(),
		Version: int32(1),
	}
	svc := Queue{
		collectorQueries: []*queryprocessor.Query{
			queryOne,
		},
		results: []*result.Result{
			{ID: uuid.New(), QueryID: queryOne.ID, QueryVersion: queryOne.Version},
		},
	}

	svc.getUnsyncedQueries()
	assert.EqualExportedValues(t, []*queryprocessor.Query(nil), svc.unsyncedQueue)

	svc.results = []*result.Result{}
	svc.unsyncedQueue = []*queryprocessor.Query{}

	svc.getUnsyncedQueries()
	assert.EqualExportedValues(t, []*queryprocessor.Query{queryOne}, svc.unsyncedQueue)
}

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

	pool, err := pgxmock.NewPool()
	if err != nil {
		t.Fatalf("failed to open pgxmock database: %v", err)
	}
	queries := repository.New(pool)
	db := &database.Connection{
		Queries: queries,
		Pool:    pool,
	}

	svc := Queue{
		db: db,
		collector: &collector.Collector{
			ID: uuid.New(),
		},
	}
	dbCollectorID := database.MustToDBUUID(svc.collector.ID)

	collectorQueries := []*queryprocessor.Query{
		{ID: uuid.New(), Type: queryprocessor.TypeContextFull, RequiredQueryIDs: []uuid.UUID{}, Version: int32(1)},
	}

	rows := pgxmock.NewRows([]string{"collectorId", "queryId", "type", "queryVersion", "requiredIds"})
	for _, q := range collectorQueries {
		dbID := database.MustToDBUUID(q.ID)
		dbReqIDs := database.MustToDBUUIDArray(q.RequiredQueryIDs)
		ty, err := queryprocessor.ToDBNullQueryType(q.Type)
		assert.Nil(t, err)
		rows = rows.
			AddRow(dbCollectorID, dbID, ty, pgtype.Int4{Int32: int32(q.Version), Valid: true}, dbReqIDs)
	}

	pool.ExpectQuery("name: GetCollectorQueries :many").WithArgs(dbCollectorID).WillReturnRows(rows)

	err = svc.getCollectorQueries(ctx)
	assert.Nil(t, err)
	assert.EqualExportedValues(t, collectorQueries, svc.collectorQueries)
}

func TestIsQuerySynced(t *testing.T) {
	query := &queryprocessor.Query{
		ID:      uuid.New(),
		Version: int32(1),
	}
	svc := Queue{
		results: []*result.Result{
			{QueryID: query.ID, QueryVersion: query.Version},
		},
	}

	isSynced := svc.isQuerySynced(query)
	assert.True(t, isSynced)
}

func TestIsQuerySyncedNoResult(t *testing.T) {
	query := &queryprocessor.Query{
		ID:      uuid.New(),
		Version: int32(1),
	}
	svc := Queue{
		results: []*result.Result{},
	}

	isSynced := svc.isQuerySynced(query)
	assert.False(t, isSynced)
}

func TestIsQuerySyncedOldResult(t *testing.T) {
	query := &queryprocessor.Query{
		ID:      uuid.New(),
		Version: int32(1),
	}
	svc := Queue{
		results: []*result.Result{
			{QueryID: query.ID, QueryVersion: query.Version - 1},
		},
	}

	isSynced := svc.isQuerySynced(query)
	assert.False(t, isSynced)
}

func TestIsQuerySyncedNewResult(t *testing.T) {
	query := &queryprocessor.Query{
		ID:      uuid.New(),
		Version: int32(1),
	}
	svc := Queue{
		results: []*result.Result{
			{QueryID: query.ID, QueryVersion: query.Version + 1},
		},
	}

	isSynced := svc.isQuerySynced(query)
	assert.False(t, isSynced)
}