export interface SystemLog {
    id?: number;
    level: 'info' | 'warn' | 'error' | 'debug';
    message: string;
    source: string;
    module?: string;
    user_id?: number;
    username?: string;
    ip_address?: string;
    details?: string;
    created_at?: Date;
}
export declare class SystemLogModel {
    static getAll(limit?: number, offset?: number): Promise<SystemLog[]>;
    static getById(id: number): Promise<SystemLog | null>;
    static getByLevel(level: string, limit?: number, offset?: number): Promise<SystemLog[]>;
    static getBySource(source: string, limit?: number, offset?: number): Promise<SystemLog[]>;
    static getByModule(module: string, limit?: number, offset?: number): Promise<SystemLog[]>;
    static getByTimeRange(startTime: Date, endTime: Date, limit?: number, offset?: number): Promise<SystemLog[]>;
    static getCount(): Promise<number>;
    static getLevelStats(startTime?: Date, endTime?: Date): Promise<any[]>;
    static getSourceStats(startTime?: Date, endTime?: Date): Promise<any[]>;
    static getDailyStats(days?: number): Promise<any[]>;
    static create(systemLog: Omit<SystemLog, 'id' | 'created_at'>): Promise<SystemLog>;
    static search(searchTerm: string, limit?: number, offset?: number): Promise<SystemLog[]>;
    static getSearchCount(searchTerm: string): Promise<number>;
    static cleanup(daysToKeep?: number): Promise<number>;
    static getRecent(limit?: number): Promise<SystemLog[]>;
    static getByUserId(userId: number, limit?: number, offset?: number): Promise<SystemLog[]>;
    static getByUsername(username: string, limit?: number, offset?: number): Promise<SystemLog[]>;
    static getFullStats(): Promise<any>;
    static getCountByMultipleConditions(conditions: {
        [key: string]: any;
    }, startTime?: Date, endTime?: Date, fuzzyFields?: string[]): Promise<number>;
    static getByMultipleConditions(conditions: {
        [key: string]: any;
    }, startTime?: Date, endTime?: Date, limit?: number, offset?: number, fuzzyFields?: string[]): Promise<SystemLog[]>;
    static getCountByTimeRange(startTime: Date, endTime: Date): Promise<number>;
    static getCountByLevel(level: string): Promise<number>;
    static getCountBySource(source: string): Promise<number>;
    static getCountByModule(module: string): Promise<number>;
    static getCountByUserId(userId: number): Promise<number>;
    static getCountByUsername(username: string): Promise<number>;
}
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