/*!
 * @license
 * Copyright 2016 Alfresco Software, Ltd.
 *
 * 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 { LogService } from '../../services/log.service';
import { AlfrescoApiService } from '../../services/alfresco-api.service';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { FormModel } from '../components/widgets/core/form.model';
import 'rxjs/add/observable/fromPromise';

@Injectable()
export class EcmModelService {

    public static MODEL_NAMESPACE: string = 'activitiForms';
    public static MODEL_NAME: string = 'activitiFormsModel';
    public static TYPE_MODEL: string = 'cm:folder';

    constructor(private apiService: AlfrescoApiService,
                private logService: LogService) {
    }

    public createEcmTypeForActivitiForm(formName: string, form: FormModel): Observable<any> {
        return Observable.create(observer => {
            this.searchActivitiEcmModel().subscribe(
                model => {
                    if (!model) {
                        this.createActivitiEcmModel(formName, form).subscribe(typeForm => {
                            observer.next(typeForm);
                            observer.complete();
                        });
                    } else {
                        this.saveFomType(formName, form).subscribe(typeForm => {
                            observer.next(typeForm);
                            observer.complete();
                        });
                    }
                },
                err => this.handleError(err)
            );
        });

    }

    searchActivitiEcmModel() {
        return this.getEcmModels().map(function (ecmModels: any) {
            return ecmModels.list.entries.find(model => model.entry.name === EcmModelService.MODEL_NAME);
        });
    }

    createActivitiEcmModel(formName: string, form: FormModel): Observable<any> {
        return Observable.create(observer => {
            this.createEcmModel(EcmModelService.MODEL_NAME, EcmModelService.MODEL_NAMESPACE).subscribe(
                model => {
                    this.logService.info('model created', model);
                    this.activeEcmModel(EcmModelService.MODEL_NAME).subscribe(
                        modelActive => {
                            this.logService.info('model active', modelActive);
                            this.createEcmTypeWithProperties(formName, form).subscribe(typeCreated => {
                                observer.next(typeCreated);
                                observer.complete();
                            });
                        },
                        err => this.handleError(err)
                    );
                },
                err => this.handleError(err)
            );
        });
    }

    saveFomType(formName: string, form: FormModel): Observable<any> {
        return Observable.create(observer => {
            this.searchEcmType(formName, EcmModelService.MODEL_NAME).subscribe(
                ecmType => {
                    this.logService.info('custom types', ecmType);
                    if (!ecmType) {
                        this.createEcmTypeWithProperties(formName, form).subscribe(typeCreated => {
                            observer.next(typeCreated);
                            observer.complete();
                        });
                    } else {
                        observer.next(ecmType);
                        observer.complete();
                    }
                },
                err => this.handleError(err)
            );
        });
    }

    public createEcmTypeWithProperties(formName: string, form: FormModel): Observable<any> {
        return Observable.create(observer => {
            this.createEcmType(formName, EcmModelService.MODEL_NAME, EcmModelService.TYPE_MODEL).subscribe(
                typeCreated => {
                    this.logService.info('type Created', typeCreated);
                    this.addPropertyToAType(EcmModelService.MODEL_NAME, formName, form).subscribe(
                        properyAdded => {
                            this.logService.info('property Added', properyAdded);
                            observer.next(typeCreated);
                            observer.complete();
                        },
                        err => this.handleError(err));
                },
                err => this.handleError(err));
        });
    }

    public searchEcmType(typeName: string, modelName: string): Observable<any> {
        return this.getEcmType(modelName).map(function (customTypes: any) {
            return customTypes.list.entries.find(type => type.entry.prefixedName === typeName || type.entry.title === typeName);
        });
    }

    public activeEcmModel(modelName: string): Observable<any> {
        return Observable.fromPromise(this.apiService.getInstance().core.customModelApi.activateCustomModel(modelName))
            .map(this.toJson)
            .catch(err => this.handleError(err));
    }

    public createEcmModel(modelName: string, nameSpace: string): Observable<any> {
        return Observable.fromPromise(this.apiService.getInstance().core.customModelApi.createCustomModel('DRAFT', '', modelName, modelName, nameSpace))
            .map(this.toJson)
            .catch(err => this.handleError(err));
    }

    public getEcmModels(): Observable<any> {
        return Observable.fromPromise(this.apiService.getInstance().core.customModelApi.getAllCustomModel())
            .map(this.toJson)
            .catch(err => this.handleError(err));
    }

    public getEcmType(modelName: string): Observable<any> {
        return Observable.fromPromise(this.apiService.getInstance().core.customModelApi.getAllCustomType(modelName))
            .map(this.toJson)
            .catch(err => this.handleError(err));
    }

    public createEcmType(typeName: string, modelName: string, parentType: string): Observable<any> {
        let name = this.cleanNameType(typeName);

        return Observable.fromPromise(this.apiService.getInstance().core.customModelApi.createCustomType(modelName, name, parentType, typeName, ''))
            .map(this.toJson)
            .catch(err => this.handleError(err));
    }

    public addPropertyToAType(modelName: string, typeName: string, formFields: any) {
        let name = this.cleanNameType(typeName);

        let properties = [];
        if (formFields && formFields.values) {
            for (let key in formFields.values) {
                if (key) {
                    properties.push({
                        name: key,
                        title: key,
                        description: key,
                        dataType: 'd:text',
                        multiValued: false,
                        mandatory: false,
                        mandatoryEnforced: false
                    });
                }
            }
        }

        return Observable.fromPromise(this.apiService.getInstance().core.customModelApi.addPropertyToType(modelName, name, properties))
            .map(this.toJson)
            .catch(err => this.handleError(err));

    }

    cleanNameType(name: string): string {
        let cleanName = name;
        if (name.indexOf(':') !== -1) {
            cleanName = name.split(':')[1];
        }
        return cleanName.replace(/[^a-zA-Z ]/g, '');
    }

    toJson(res: any) {
        if (res) {
            return res || {};
        }
        return {};
    }

    handleError(err: any): any {
        this.logService.error(err);
    }
}