import { Repository } from 'typeorm';
import { AuditLog, AuditAction } from '../entities/audit-log.entity';
import { ActivityLog, ActivityType } from '../entities/activity-log.entity';
import { QueryAuditLogsDto } from '../dto/query-audit.dto';
import { QueryActivityLogsDto } from '../dto/query-activity.dto';
import { CreateActivityLogDto } from '../dto/create-activity.dto';
export interface CreateAuditLogParams {
    tenant_id: string;
    user_id?: string;
    action: AuditAction;
    entity_type: string;
    entity_id?: string;
    old_values?: Record<string, any>;
    new_values?: Record<string, any>;
    ip_address?: string;
    user_agent?: string;
    endpoint?: string;
    http_method?: string;
    response_status?: number;
    duration_ms?: number;
    description?: string;
    metadata?: Record<string, any>;
}
export interface PaginatedResult<T> {
    data: T[];
    total: number;
    page: number;
    limit: number;
    totalPages: number;
}
export declare class AuditService {
    private readonly auditLogRepository;
    private readonly activityLogRepository;
    constructor(auditLogRepository: Repository<AuditLog>, activityLogRepository: Repository<ActivityLog>);
    createAuditLog(params: CreateAuditLogParams): Promise<AuditLog>;
    queryAuditLogs(tenantId: string, query: QueryAuditLogsDto): Promise<PaginatedResult<AuditLog>>;
    getAuditLogById(tenantId: string, id: string): Promise<AuditLog | null>;
    getEntityAuditHistory(tenantId: string, entityType: string, entityId: string): Promise<AuditLog[]>;
    createActivityLog(tenantId: string, userId: string, dto: CreateActivityLogDto, context?: {
        ip_address?: string;
        user_agent?: string;
        session_id?: string;
    }): Promise<ActivityLog>;
    queryActivityLogs(tenantId: string, query: QueryActivityLogsDto): Promise<PaginatedResult<ActivityLog>>;
    getUserActivitySummary(tenantId: string, userId: string, days?: number): Promise<{
        activity_type: ActivityType;
        count: number;
    }[]>;
    getAuditStats(tenantId: string, days?: number): Promise<{
        total_actions: number;
        actions_by_type: {
            action: AuditAction;
            count: number;
        }[];
        top_users: {
            user_id: string;
            count: number;
        }[];
    }>;
    private detectChangedFields;
}