add server to monorepo.

packages/server/src/services/Subscription/MailMessages.ts

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+import { Service } from "typedi";
+
+@Service()
+export default class SubscriptionMailMessages {
+  /**
+   * 
+   * @param phoneNumber 
+   * @param remainingDays 
+   */
+  public async sendRemainingSubscriptionPeriod(phoneNumber: string, remainingDays: number) {
+    const message: string = `
+      Your remaining subscription is ${remainingDays} days,
+      please renew your subscription before expire.
+    `;
+    this.smsClient.sendMessage(phoneNumber, message);
+  }
+
+  /**
+   * 
+   * @param phoneNumber 
+   * @param remainingDays 
+   */
+  public async sendRemainingTrialPeriod(phoneNumber: string, remainingDays: number) {
+    const message: string = `
+      Your remaining free trial is ${remainingDays} days,
+      please subscription before ends, if you have any quation to contact us.`;
+
+    this.smsClient.sendMessage(phoneNumber, message);
+  }
+}

packages/server/src/services/Subscription/SMSMessages.ts

@@ -0,0 +1,40 @@
+import { Service, Inject } from 'typedi';
+import SMSClient from '@/services/SMSClient';
+
+@Service()
+export default class SubscriptionSMSMessages {
+  @Inject('SMSClient')
+  smsClient: SMSClient;
+
+  /**
+   * Send remaining subscription period SMS message.
+   * @param {string} phoneNumber -
+   * @param {number} remainingDays -
+   */
+  public async sendRemainingSubscriptionPeriod(
+    phoneNumber: string,
+    remainingDays: number
+  ): Promise<void> {
+    const message: string = `
+      Your remaining subscription is ${remainingDays} days,
+      please renew your subscription before expire.
+    `;
+    this.smsClient.sendMessage(phoneNumber, message);
+  }
+
+  /**
+   * Send remaining trial period SMS message.
+   * @param {string} phoneNumber -
+   * @param {number} remainingDays -
+   */
+  public async sendRemainingTrialPeriod(
+    phoneNumber: string,
+    remainingDays: number
+  ): Promise<void> {
+    const message: string = `
+      Your remaining free trial is ${remainingDays} days,
+      please subscription before ends, if you have any quation to contact us.`;
+
+    this.smsClient.sendMessage(phoneNumber, message);
+  }
+}

packages/server/src/services/Subscription/Subscription.ts

@@ -0,0 +1,80 @@
+import { Inject } from 'typedi';
+import { Tenant, Plan } from '@/system/models';
+import { IPaymentContext } from '@/interfaces';
+import { NotAllowedChangeSubscriptionPlan } from '@/exceptions';
+
+export default class Subscription<PaymentModel> {
+  paymentContext: IPaymentContext | null;
+
+  @Inject('logger')
+  logger: any;
+
+  /**
+   * Constructor method.
+   * @param {IPaymentContext}
+   */
+  constructor(payment?: IPaymentContext) {
+    this.paymentContext = payment;
+  }
+
+  /**
+   * Give the tenant a new subscription.
+   * @param {Tenant} tenant
+   * @param {Plan} plan
+   * @param {string} invoiceInterval
+   * @param {number} invoicePeriod
+   * @param {string} subscriptionSlug
+   */
+  protected async newSubscribtion(
+    tenant,
+    plan,
+    invoiceInterval: string,
+    invoicePeriod: number,
+    subscriptionSlug: string = 'main'
+  ) {
+    const subscription = await tenant
+      .$relatedQuery('subscriptions')
+      .modify('subscriptionBySlug', subscriptionSlug)
+      .first();
+
+    // No allowed to re-new the the subscription while the subscription is active.
+    if (subscription && subscription.active()) {
+      throw new NotAllowedChangeSubscriptionPlan();
+
+      // In case there is already subscription associated to the given tenant renew it.
+    } else if (subscription && subscription.inactive()) {
+      await subscription.renew(invoiceInterval, invoicePeriod);
+
+      // No stored past tenant subscriptions create new one.
+    } else {
+      await tenant.newSubscription(
+        plan.id,
+        invoiceInterval,
+        invoicePeriod,
+        subscriptionSlug
+      );
+    }
+  }
+
+  /**
+   * Subscripe to the given plan.
+   * @param {Plan} plan
+   * @throws {NotAllowedChangeSubscriptionPlan}
+   */
+  public async subscribe(
+    tenant: Tenant,
+    plan: Plan,
+    paymentModel?: PaymentModel,
+    subscriptionSlug: string = 'main'
+  ) {
+    await this.paymentContext.makePayment(paymentModel, plan);
+
+    return this.newSubscribtion(
+      tenant,
+      plan,
+      plan.invoiceInterval,
+      plan.invoicePeriod,
+      subscriptionSlug
+    );
+  }
+}

packages/server/src/services/Subscription/SubscriptionPeriod.ts

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+import moment from 'moment';
+
+export default class SubscriptionPeriod {
+  start: Date;
+  end: Date;
+  interval: string;
+  count: number;
+
+  /**
+   * Constructor method.
+   * @param {string} interval -
+   * @param {number} count -
+   * @param {Date} start -
+   */
+  constructor(interval: string = 'month', count: number, start?: Date) {
+    this.interval = interval;
+    this.count = count;
+    this.start = start;
+
+    if (!start) {
+      this.start = moment().toDate();
+    }
+    this.end = moment(start).add(count, interval).toDate();
+  }
+
+  getStartDate() {
+    return this.start;
+  }
+
+  getEndDate() {
+    return this.end;
+  }
+
+  getInterval() {
+    return this.interval;
+  }
+
+  getIntervalCount() {
+    return this.interval;
+  }
+}

packages/server/src/services/Subscription/SubscriptionService.ts

@@ -0,0 +1,69 @@
+import { Service, Inject } from 'typedi';
+import { Plan, PlanSubscription, Tenant } from '@/system/models';
+import Subscription from '@/services/Subscription/Subscription';
+import LicensePaymentMethod from '@/services/Payment/LicensePaymentMethod';
+import PaymentContext from '@/services/Payment';
+import SubscriptionSMSMessages from '@/services/Subscription/SMSMessages';
+import SubscriptionMailMessages from '@/services/Subscription/MailMessages';
+import { ILicensePaymentModel } from '@/interfaces';
+import SubscriptionViaLicense from './SubscriptionViaLicense';
+
+@Service()
+export default class SubscriptionService {
+  @Inject()
+  smsMessages: SubscriptionSMSMessages;
+
+  @Inject()
+  mailMessages: SubscriptionMailMessages;
+
+  @Inject('logger')
+  logger: any;
+
+  @Inject('repositories')
+  sysRepositories: any;
+
+  /**
+   * Handles the payment process via license code and than subscribe to
+   * the given tenant.
+   * @param {number} tenantId
+   * @param {String} planSlug
+   * @param {string} licenseCode
+   * @return {Promise}
+   */
+  public async subscriptionViaLicense(
+    tenantId: number,
+    planSlug: string,
+    paymentModel: ILicensePaymentModel,
+    subscriptionSlug: string = 'main'
+  ) {
+    // Retrieve plan details.
+    const plan = await Plan.query().findOne('slug', planSlug);
+
+    // Retrieve tenant details.
+    const tenant = await Tenant.query().findById(tenantId);
+
+    // License payment method.
+    const paymentViaLicense = new LicensePaymentMethod();
+
+    // Payment context.
+    const paymentContext = new PaymentContext(paymentViaLicense);
+
+    // Subscription.
+    const subscription = new SubscriptionViaLicense(paymentContext);
+
+    // Subscribe.
+    await subscription.subscribe(tenant, plan, paymentModel, subscriptionSlug);
+  }
+
+  /**
+   * Retrieve all subscription of the given tenant.
+   * @param {number} tenantId
+   */
+  public async getSubscriptions(tenantId: number) {
+    const subscriptions = await PlanSubscription.query().where(
+      'tenant_id',
+      tenantId
+    );
+    return subscriptions;
+  }
+}

packages/server/src/services/Subscription/SubscriptionViaLicense.ts

@@ -0,0 +1,54 @@
+import { License, Tenant, Plan } from '@/system/models';
+import Subscription from './Subscription';
+import { PaymentModel } from '@/interfaces';
+
+export default class SubscriptionViaLicense extends Subscription<PaymentModel> {
+  /**
+   * Subscripe to the given plan.
+   * @param {Plan} plan
+   * @throws {NotAllowedChangeSubscriptionPlan}
+   */
+  public async subscribe(
+    tenant: Tenant,
+    plan: Plan,
+    paymentModel?: PaymentModel,
+    subscriptionSlug: string = 'main'
+  ): Promise<void> {
+    await this.paymentContext.makePayment(paymentModel, plan);
+
+    return this.newSubscriptionFromLicense(
+      tenant,
+      plan,
+      paymentModel.licenseCode,
+      subscriptionSlug
+    );
+  }
+
+  /**
+   * New subscription from the given license.
+   * @param {Tanant} tenant 
+   * @param {Plab} plan 
+   * @param {string} licenseCode 
+   * @param {string} subscriptionSlug 
+   * @returns {Promise<void>}
+   */
+  private async newSubscriptionFromLicense(
+    tenant,
+    plan,
+    licenseCode: string,
+    subscriptionSlug: string = 'main'
+  ): Promise<void> {
+    // License information.
+    const licenseInfo = await License.query().findOne(
+      'licenseCode',
+      licenseCode
+    );
+    return this.newSubscribtion(
+      tenant,
+      plan,
+      licenseInfo.periodInterval,
+      licenseInfo.licensePeriod,
+      subscriptionSlug
+    );
+  }
+}