import {
    Component,
    EventEmitter,
    Input,
    OnInit,
    Output,
} from '@angular/core';

import { ToasterService } from 'angular2-toaster';
import { Angulartics2 } from 'angulartics2';

import { ApiService } from 'jslib/abstractions/api.service';
import { I18nService } from 'jslib/abstractions/i18n.service';

import { PolicyType } from 'jslib/enums/policyType';

import { PolicyRequest } from 'jslib/models/request/policyRequest';

import { PolicyResponse } from 'jslib/models/response/policyResponse';

@Component({
    selector: 'app-policy-edit',
    templateUrl: 'policy-edit.component.html',
})
export class PolicyEditComponent implements OnInit {
    @Input() name: string;
    @Input() description: string;
    @Input() type: PolicyType;
    @Input() organizationId: string;
    @Input() policiesEnabledMap: Map<PolicyType, boolean> = new Map<PolicyType, boolean>();
    @Output() onSavedPolicy = new EventEmitter();

    policyType = PolicyType;
    loading = true;
    enabled = false;
    formPromise: Promise<any>;
    passwordScores: any[];
    defaultTypes: any[];

    // Master password

    masterPassMinComplexity?: number = null;
    masterPassMinLength?: number;
    masterPassRequireUpper?: number;
    masterPassRequireLower?: number;
    masterPassRequireNumbers?: number;
    masterPassRequireSpecial?: number;

    // Password generator

    passGenDefaultType?: string;
    passGenMinLength?: number;
    passGenUseUpper?: boolean;
    passGenUseLower?: boolean;
    passGenUseNumbers?: boolean;
    passGenUseSpecial?: boolean;
    passGenMinNumbers?: number;
    passGenMinSpecial?: number;
    passGenMinNumberWords?: number;
    passGenCapitalize?: boolean;
    passGenIncludeNumber?: boolean;

    private policy: PolicyResponse;

    constructor(private apiService: ApiService, private i18nService: I18nService,
        private analytics: Angulartics2, private toasterService: ToasterService) {
        this.passwordScores = [
            { name: '-- ' + i18nService.t('select') + ' --', value: null },
            { name: i18nService.t('weak') + ' (0)', value: 0 },
            { name: i18nService.t('weak') + ' (1)', value: 1 },
            { name: i18nService.t('weak') + ' (2)', value: 2 },
            { name: i18nService.t('good') + ' (3)', value: 3 },
            { name: i18nService.t('strong') + ' (4)', value: 4 },
        ];
        this.defaultTypes = [
            { name: i18nService.t('userPreference'), value: null },
            { name: i18nService.t('password'), value: 'password' },
            { name: i18nService.t('passphrase'), value: 'passphrase' },
        ];
    }

    async ngOnInit() {
        await this.load();
        this.loading = false;
    }

    async load() {
        try {
            this.policy = await this.apiService.getPolicy(this.organizationId, this.type);

            if (this.policy != null) {
                this.enabled = this.policy.enabled;
                if (this.policy.data != null) {
                    switch (this.type) {
                        case PolicyType.PasswordGenerator:
                            this.passGenDefaultType = this.policy.data.defaultType;
                            this.passGenMinLength = this.policy.data.minLength;
                            this.passGenUseUpper = this.policy.data.useUpper;
                            this.passGenUseLower = this.policy.data.useLower;
                            this.passGenUseNumbers = this.policy.data.useNumbers;
                            this.passGenUseSpecial = this.policy.data.useSpecial;
                            this.passGenMinNumbers = this.policy.data.minNumbers;
                            this.passGenMinSpecial = this.policy.data.minSpecial;
                            this.passGenMinNumberWords = this.policy.data.minNumberWords;
                            this.passGenCapitalize = this.policy.data.capitalize;
                            this.passGenIncludeNumber = this.policy.data.includeNumber;
                            break;
                        case PolicyType.MasterPassword:
                            this.masterPassMinComplexity = this.policy.data.minComplexity;
                            this.masterPassMinLength = this.policy.data.minLength;
                            this.masterPassRequireUpper = this.policy.data.requireUpper;
                            this.masterPassRequireLower = this.policy.data.requireLower;
                            this.masterPassRequireNumbers = this.policy.data.requireNumbers;
                            this.masterPassRequireSpecial = this.policy.data.requireSpecial;
                            break;
                        default:
                            break;
                    }
                }
            }
        } catch (e) {
            if (e.statusCode === 404) {
                this.enabled = false;
            } else {
                throw e;
            }
        }
    }

    async submit() {
        if (this.preValidate()) {
            const request = new PolicyRequest();
            request.enabled = this.enabled;
            request.type = this.type;
            request.data = null;
            switch (this.type) {
                case PolicyType.PasswordGenerator:
                    request.data = {
                        defaultType: this.passGenDefaultType,
                        minLength: this.passGenMinLength || null,
                        useUpper: this.passGenUseUpper,
                        useLower: this.passGenUseLower,
                        useNumbers: this.passGenUseNumbers,
                        useSpecial: this.passGenUseSpecial,
                        minNumbers: this.passGenMinNumbers || null,
                        minSpecial: this.passGenMinSpecial || null,
                        minNumberWords: this.passGenMinNumberWords || null,
                        capitalize: this.passGenCapitalize,
                        includeNumber: this.passGenIncludeNumber,
                    };
                    break;
                case PolicyType.MasterPassword:
                    request.data = {
                        minComplexity: this.masterPassMinComplexity || null,
                        minLength: this.masterPassMinLength || null,
                        requireUpper: this.masterPassRequireUpper,
                        requireLower: this.masterPassRequireLower,
                        requireNumbers: this.masterPassRequireNumbers,
                        requireSpecial: this.masterPassRequireSpecial,
                    };
                    break;
                default:
                    break;
            }
            try {
                this.formPromise = this.apiService.putPolicy(this.organizationId, this.type, request);
                await this.formPromise;
                this.analytics.eventTrack.next({ action: 'Edited Policy' });
                this.toasterService.popAsync('success', null, this.i18nService.t('editedPolicyId', this.name));
                this.onSavedPolicy.emit();
            } catch { }
        }
    }

    private preValidate(): boolean {
        switch (this.type) {
            case PolicyType.RequireSso:
                if (!this.enabled) { // Don't need prevalidation checks if submitting to disable
                    return true;
                }
                // Have OnlyOrg policy enabled?
                if (!(this.policiesEnabledMap.has(PolicyType.OnlyOrg)
                    && this.policiesEnabledMap.get(PolicyType.OnlyOrg))) {
                    this.toasterService.popAsync('error', null, this.i18nService.t('requireSsoPolicyReqError'));
                    return false;
                }
                return true;

            default:
                return true;
        }
    }
}