package httpapi

import (
	"context"
	"strings"
	"testing"

	"github.com/jackc/pgx/v5/pgxpool"
)

func requireDedicatedIntegrationTestDatabase(t *testing.T, ctx context.Context, pool *pgxpool.Pool) {
	t.Helper()
	var databaseName string
	if err := pool.QueryRow(ctx, `SELECT current_database()`).Scan(&databaseName); err != nil {
		t.Fatalf("read integration test database name: %v", err)
	}
	if !isDedicatedIntegrationTestDatabase(databaseName) {
		t.Fatalf(
			"AI_GATEWAY_TEST_DATABASE_URL must reference a dedicated test database; refusing to use %q",
			databaseName,
		)
	}
}

func isDedicatedIntegrationTestDatabase(databaseName string) bool {
	normalized := strings.ToLower(strings.TrimSpace(databaseName))
	return normalized == "test" ||
		strings.HasPrefix(normalized, "test_") ||
		strings.HasSuffix(normalized, "_test") ||
		strings.Contains(normalized, "_test_")
}

func TestDedicatedIntegrationTestDatabaseName(t *testing.T) {
	t.Parallel()
	for _, testCase := range []struct {
		name     string
		database string
		allowed  bool
	}{
		{name: "documented local test database", database: "easyai_ai_gateway_test_codex", allowed: true},
		{name: "test prefix", database: "test_gateway", allowed: true},
		{name: "test suffix", database: "gateway_test", allowed: true},
		{name: "production database", database: "easyai_ai_gateway", allowed: false},
		{name: "similar production name", database: "gateway_contest", allowed: false},
	} {
		testCase := testCase
		t.Run(testCase.name, func(t *testing.T) {
			t.Parallel()
			if got := isDedicatedIntegrationTestDatabase(testCase.database); got != testCase.allowed {
				t.Fatalf("isDedicatedIntegrationTestDatabase(%q) = %v, want %v", testCase.database, got, testCase.allowed)
			}
		})
	}
}