import { Observable } from 'rxjs';
import { Actor, ErrorResponse, Form, Paged, Task, Workflow } from 'verben-workflow-ui/src/lib/models';
import { HttpWebRequestService } from 'verben-workflow-ui/src/lib/services';
import * as i0 from "@angular/core";
export declare class TasksService {
    private httpService;
    constructor(httpService: HttpWebRequestService);
    /**
     * Get tasks with pagination and sorting
     * @param skip Number of records to skip
     * @param limit Number of records to take
     * @param sortParam Sort parameter
     * @param sortOrder Sort order ('asc' or 'desc')
     * @returns Promise containing the tasks
     */
    getTasks(skip: number, limit: number, sortParam: string, sortOrder: string): Promise<Paged<Task> | ErrorResponse>;
    /**
     * Get tasks with additional parameter, pagination and sorting
     * @param param Search parameter
     * @param skip Number of records to skip
     * @param limit Number of records to take
     * @param sortParam Sort parameter
     * @param sortOrder Sort order ('asc' or 'desc')
     * @returns Promise containing the filtered tasks
     */
    getTaskWithParam(param: string, skip: number, limit: number, sortParam: string, sortOrder: string): Promise<Paged<Task> | ErrorResponse>;
    /**
     * Save multiple tasks
     * @param requests Array of tasks to save
     * @returns Promise containing the save operation result
     */
    saveTasks(requests: Task[]): Promise<any | ErrorResponse>;
    /**
     * Approve or reject multiple tasks
     * @param requests Array of tasks to save
     * @param isApproval True for approval, false for decline
     * @returns Promise containing the save operation result
     */
    processTasks(requests: Task[], isApproval: boolean): Promise<any | ErrorResponse>;
    /**
     * Delete multiple tasks
     * @param requestIds Array of request IDs to delete
     * @returns Observable containing the delete operation result
     */
    deleteTasks(requestIds: string[]): Observable<any | ErrorResponse>;
    getWorkflows(): Promise<Paged<Workflow> | ErrorResponse>;
    getFormWithParam(param: string): Promise<Paged<Form> | ErrorResponse>;
    followTask(actorId: string, task: Task): Promise<Task | ErrorResponse>;
    unFollowTask(taskId: string, actorId: string): Promise<void | ErrorResponse>;
    reAssign(task: Task, comment: string, toUser?: string, fromUser?: string): Promise<Task | ErrorResponse>;
    getNextActors(taskCode: string, stageCode?: string, forCurrentStage?: boolean): Promise<Actor[] | ErrorResponse>;
    pickTask(task: Task, comment: string, recipient?: string, targetStage?: string): Promise<Task | ErrorResponse>;
    unPickTask(targetStage: string, task: Task, comment: string, recipient?: string): Promise<Task | ErrorResponse>;
    getPossibleTasksForUser(user: string, skip: number, limit: number, sortParam: string, sortOrder: string): Promise<Paged<Task> | ErrorResponse>;
    static ɵfac: i0.ɵɵFactoryDeclaration<TasksService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<TasksService>;
}