/*!
 * @license
 * Copyright © 2005-2024 Hyland Software, Inc. and its affiliates. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { Injectable } from '@angular/core';
import { Observable, from } from 'rxjs';
import { AlfrescoApiService, GroupModel } from '@alfresco/adf-core';
import { map } from 'rxjs/operators';
import { TaskActionsApi, UsersApi, ActivitiGroupsApi, UserProfileApi, UserRepresentation, LightUserRepresentation } from '@alfresco/js-api';

@Injectable({
    providedIn: 'root'
})
export class PeopleProcessService {
    private _taskActionsApi: TaskActionsApi;
    get taskActionsApi(): TaskActionsApi {
        this._taskActionsApi = this._taskActionsApi ?? new TaskActionsApi(this.apiService.getInstance());
        return this._taskActionsApi;
    }

    private _userApi: UsersApi;
    get userApi(): UsersApi {
        this._userApi = this._userApi ?? new UsersApi(this.apiService.getInstance());
        return this._userApi;
    }

    private _groupsApi: ActivitiGroupsApi;
    get groupsApi(): ActivitiGroupsApi {
        this._groupsApi = this._groupsApi ?? new ActivitiGroupsApi(this.apiService.getInstance());
        return this._groupsApi;
    }

    private _profileApi: UserProfileApi;
    get profileApi(): UserProfileApi {
        this._profileApi = this._profileApi ?? new UserProfileApi(this.apiService.getInstance());
        return this._profileApi;
    }

    constructor(private apiService: AlfrescoApiService) {}

    /**
     * Gets information about the current user.
     *
     * @returns User information object
     */
    getCurrentUserInfo(): Observable<UserRepresentation> {
        return from(this.profileApi.getProfile());
    }

    /**
     * Gets the current user's profile image as a URL.
     *
     * @returns URL string
     */
    getCurrentUserProfileImage(): string {
        return this.profileApi.getProfilePictureUrl();
    }

    /**
     * Gets a list of groups in a workflow.
     *
     * @param filter Filter to select specific groups
     * @param groupId Group ID for the search
     * @returns Array of groups
     */
    getWorkflowGroups(filter: string, groupId?: string): Observable<GroupModel[]> {
        const option: any = { filter };
        if (groupId) {
            option.groupId = groupId;
        }
        return from(this.groupsApi.getGroups(option)).pipe(map((response: any) => response.data || []));
    }

    /**
     * Gets information about users across all tasks.
     *
     * @param taskId ID of the task
     * @param searchWord Filter text to search for
     * @param groupId group id
     * @returns Array of user information objects
     */
    getWorkflowUsers(taskId?: string, searchWord?: string, groupId?: number): Observable<LightUserRepresentation[]> {
        const option = { excludeTaskId: taskId, filter: searchWord, groupId };

        return from(this.userApi.getUsers(option)).pipe(map((response) => response.data || []));
    }
    /**
     * Gets the profile picture URL for the specified user.
     *
     * @param userId The target user
     * @returns Profile picture URL
     */
    getUserImage(userId: string): string {
        return this.userApi.getUserProfilePictureUrl(userId);
    }

    /**
     * Sets a user to be involved with a task.
     *
     * @param taskId ID of the target task
     * @param idToInvolve ID of the user to involve
     * @returns Empty response when the update completes
     */
    involveUserWithTask(taskId: string, idToInvolve: string): Observable<LightUserRepresentation[]> {
        return from(this.taskActionsApi.involveUser(taskId, { userId: idToInvolve }));
    }

    /**
     * Removes a user who is currently involved with a task.
     *
     * @param taskId ID of the target task
     * @param idToRemove ID of the user to remove
     * @returns Empty response when the update completes
     */
    removeInvolvedUser(taskId: string, idToRemove: string): Observable<LightUserRepresentation[]> {
        return from(this.taskActionsApi.removeInvolvedUser(taskId, { userId: idToRemove }));
    }
}