require('dotenv').config(); //require .env for stripe configurations
const moment = require('moment');
const stripe = require('./StripeApi');
const db = require('../models');
const helpers = require('../core/helpers');
const userModel = db.user;
const stripeSubscriptionModel = db.stripe_subscription;
const stripeSubscriptionLogModel = db.stripe_subscription_log;
const stripePlanModel = db.stripe_plan;
const stripeProductModel = db.stripe_product;
const stripePaymentModel = db.stripe_payment;
const stripeServiceModel = db.stripe_service;
const stripeCardModel = db.stripe_card;
const stripeInvoiceModel = db.stripe_invoice;
const stripeRefundModel = db.stripe_refund;
const stripeCouponModel = db.stripe_coupon;
const stripeCheckoutSessionModel = db.stripe_checkout_session;

module.exports = new Service();
function Service() {
  this.userID = null;
  this.roleID = null;
  this.currency = process.env.STRIPE_CURRENCY;
  this.prorate = process.env.STRIPE_PRORATE;
  this.forceCancel = process.env.STRIPE_FORCE_CANCEL;

  this.setUserId = function (userID) {
    this.userID = userID;
  };
  this.setRoleId = function (roleID) {
    this.roleID = roleID;
  };
  this.setCurrency = function (currency) {
    this.currency = currency;
  };
  this.setProrationType = function (prorate) {
    this.prorate = prorate;
  };
  this.setCancelType = function (forceCancel) {
    this.forceCancel = forceCancel;
  };

  this.subscribe = async function (subscriptionParams, plan) {
    var subscription = await stripe.createSubscription(subscriptionParams);
    //create model entry

    let subscriptionModelEntry = {
      stripe_id: subscription.id ?? '',
      cancel_at_period_end: subscription.cancel_at_period_end ?? null,
      current_period_start: moment(new Date(subscription.current_period_start * 1000)).format('YYYY-MM-DD') ?? null,
      current_period_end: moment(new Date(subscription.current_period_end * 1000)).format('YYYY-MM-DD') ?? null,
      user_id: this.userID ?? null,
      role_id: this.roleID ?? null,
      plan_id: plan.id ?? null,
      plan_stripe_id: subscription.plan.id ?? null,
      coupon_stripe_id: subscription.discount?.coupon?.id ?? '',
      customer_stripe_id: subscription.customer ?? '',
      collection_method: subscription.collection_method ?? '',
      interval: helpers.getMappingKey(stripeSubscriptionModel.interval_mapping, subscription.plan?.interval) ?? null,
      interval_count: subscription.plan.interval_count ?? '',
      trial_period_days: subscription.plan.trial_period_days ?? 0,
      trial_end: subscription.trial_end ? moment(new Date(subscription.trial_end * 1000)).format('YYYY-MM-DD') : null,
      trial_start: subscription.trial_start ? moment(new Date(subscription.subscriptiontrial_start * 1000)).format('YYYY-MM-DD') : null,
      status: helpers.getMappingKey(stripeSubscriptionModel.status_mapping, subscription.status) ?? null,
    };

    let subscriptionCreatedId = await stripeSubscriptionModel.insert(subscriptionModelEntry);
    if (!subscriptionCreatedId) {
      throw new Error('Subscription is not found.');
    }

    let subscriptionLogUpdated = await this.updateSubscriptionLogByUser(subscriptionCreatedId, subscription.status, plan);
    if (!subscriptionLogUpdated) {
      throw new Error('Error while editing subscription log');
    }
    return { localSubscriptionID: subscriptionCreatedId, subscription };
  };
  this.updateSubscriptionLogByUser = async function (subscriptionCreatedId, subscriptionCreatedStatus, plan) {
    let subscriptionLog = await stripeSubscriptionLogModel.getLast({ user_id: this.userID, role_id: this.roleID });

    if (!subscriptionLog) {
      let subscriptionLogModelEntry = {
        user_id: this.userID,
        role_id: this.roleID,
        plan_id: plan?.id ?? null,
        subscription_id: subscriptionCreatedId,
        type: plan?.type ?? null,
        status: subscriptionCreatedStatus == 'active' || subscriptionCreatedStatus == 'trialing' ? 1 : 0,
      };
      if (!(await stripeSubscriptionLogModel.insert(subscriptionLogModelEntry))) {
        throw new Error('Subscription log add not successfull');
      }
    } else {
      let subscriptionLogModelEntry = {
        plan_id: plan?.id ?? null,
        subscription_id: subscriptionCreatedId,
        type: plan?.type ?? null,
        status: subscriptionCreatedStatus == 'active' || subscriptionCreatedStatus == 'trialing' ? 1 : 0,
      };
      let editedLog = await stripeSubscriptionLogModel.edit(subscriptionLogModelEntry, subscriptionLog.id);
      if (!editedLog) {
        throw new Error('Subscription log edit not successfull');
      }
    }
    return true;
  };
  this.updateSubscriptionLogBySubscription = async function (subscription) {
    let localSubscription = await stripeSubscriptionModel.getLast({ stripe_id: subscription.id });
    if (!localSubscription) {
      throw new Error("Subscription Doesn't exist");
    }

    let subscriptionLog = await stripeSubscriptionLogModel.getLast({ subscription_id: localSubscription.id });
    if (!subscriptionLog) {
      throw new Error("Subscription log Doesn't exist");
    }

    let plan = await stripePlanModel.getByFields({ stripe_id: subscription.plan.id });
    if (!plan) {
      throw new Error("Plan Doesn't exist");
    }
    let subscriptionLogModelEntry = {
      plan_id: plan.id ?? null,
      subscription_id: localSubscription.id,
      type: plan.type ?? null,
      status: subscription.status == 'active' || subscription.status == 'trialing' ? 1 : 0,
    };

    let editedLog = await stripeSubscriptionLogModel.edit(subscriptionLogModelEntry, subscriptionLog.id);
    if (!editedLog) {
      throw new Error('Error editing subscription log');
    }
    return true;
  };
  this.saveSubscriptionInvoice = async function (invoice) {};
  this.createRegularSubscription = async function (user, plan, card, coupon) {
    let subscriptionParams = {
      customer: user.stripe_id,
      items: [{ price: plan.stripe_id }],
      trial_from_plan: true,
      default_payment_method: card?.stripe_card_id ?? null,
      coupon: coupon?.stripe_id ?? null,
      proration_behavior: this.prorate == 'true' ? 'create_prorations' : 'none',
    };
    let { subscription } = await this.subscribe(subscriptionParams, plan);

    let retrieveParams = {
      invoiceId: subscription.latest_invoice,
      params: { expand: ['payment_intent'] },
    };
    let invoice = await stripe.retrieveInvoice(retrieveParams);
    let paymentIntent = invoice.payment_intent;

    let localInvoice = await stripeInvoiceModel.getByFields({ stripe_id: invoice.id });
    if (!localInvoice) {
      let invoiceModelEntry = {
        stripe_id: invoice.id,
        user_id: this.userID,
        role_id: this.roleID,
        billing_reason: invoice.billing_reason,
        subscription_stripe_id: invoice.subscription,
        customer_stripe_id: invoice.customer,
        charge_stripe_id: invoice.charge,
        collection_method: invoice.collection_method,
        currency: invoice.currency,
        invoice_url: invoice.hosted_invoice_url,
        invoice_pdf_url: invoice.invoice_pdf,
        payment_intent: invoice.payment_intent?.id ?? null,
        amount_due: helpers.convertFromCents(invoice.amount_due),
        amount_paid: helpers.convertFromCents(invoice.amount_paid),
        amount_total: helpers.convertFromCents(invoice.total),
        line_items: JSON.stringify(invoice.lines),
        payment_attempted: invoice.attempted == true ? 1 : 0,
        status: helpers.getMappingKey(stripeInvoiceModel.status_mapping, invoice.status),
        refunded: 0,
      };
      let createdInvoiceID = await stripeInvoiceModel.insert(invoiceModelEntry);
      if (!createdInvoiceID) {
        throw new Error('Internal Error: error creating invoice');
      }
    }

    if (subscription.status == 'incomplete' && invoice.status == 'open') {
      if (paymentIntent.status == 'requires_action') {
        let authLink = paymentIntent.next_action.use_stripe_sdk.stripe_js;
        throw { type: 'CardRequiresAction', message: 'Card requires confirmation', link: authLink };
      }
    }

    return subscription;
  };
  this.createLifetimeSubscription = async function (user, plan, card, coupon) {
    //create invoice, finalize and pay it.
    let lifetimePlanStripeObject = await stripe.retrievePrice({ priceId: plan.stripe_id, params: {} });
    let invoiceItemParams = {
      customer: user.stripe_id,
      price: plan.stripe_id,
      discounts: [{ coupon: coupon?.stripe_id }],
    };
    let invoiceItemCreated = await stripe.createInvoiceItem(invoiceItemParams);

    let invoiceParams = {
      customer: user.stripe_id,
      default_payment_method: card?.stripe_card_id ?? null,
    };
    let invoiceCreated = await stripe.createInvoice(invoiceParams);

    let invoicePaid = await stripe.payInvoice(invoiceCreated.id);

    let subscriptionModelEntry = {
      stripe_id: invoiceItemCreated.id ?? '',
      cancel_at_period_end: null,
      current_period_start: moment().format('YYYY-MM-DD') ?? null,
      current_period_end: null,
      user_id: this.userID ?? null,
      role_id: this.roleID ?? null,
      plan_id: plan?.id ?? null,
      coupon_stripe_id: invoiceItemCreated.discounts.length > 0 ? coupon?.stripe_id : '',
      customer_stripe_id: invoicePaid.customer ?? '',
      collection_method: invoicePaid.collection_method ?? '',
      interval: 4,
      interval_count: null,
      trial_period_days: 0,
      trial_end: null,
      trial_start: null,
      status: 4,
    };

    let subscriptionCreatedId = await stripeSubscriptionModel.insert(subscriptionModelEntry);
    if (!subscriptionCreatedId) {
      throw new Error('Subscription is not found.');
    }

    let subscriptionLogUpdated = await this.updateSubscriptionLogByUser(subscriptionCreatedId, 'active', plan);
    if (!subscriptionLogUpdated) {
      throw new Error('Error while editing subscription log');
    }

    return subscriptionCreatedId;
  };
  let calculateFullPeriod = function (interval, interval_count = 1) {
    let totalNumberOfDays = stripePlanModel.interval_days_mapping()[interval] * interval_count;
    let cancelAtEpoch = moment().add(totalNumberOfDays, 'days').unix();
    return cancelAtEpoch;
  };
  this.createTrialSubscription = async function (user, plan, card, coupon) {
    let trialPlanFullPeriod = calculateFullPeriod(plan.interval, plan.interval_count);
    let subscriptionParams = {
      customer: user.stripe_id,
      items: [{ price: plan.stripe_id }],
      trial_from_plan: true,
      default_payment_method: card?.stripe_card_id ?? null,
      coupon: coupon?.stripe_id ?? null,
      cancel_at: trialPlanFullPeriod,
      proration_behavior: this.prorate == 'true' ? 'create_prorations' : 'none',
    };
    // return await this.subscribe(subscriptionParams, plan);
    let { subscription } = await this.subscribe(subscriptionParams, plan);

    let retrieveParams = {
      invoiceId: subscription.latest_invoice,
      params: { expand: ['payment_intent'] },
    };
    let invoice = await stripe.retrieveInvoice(retrieveParams);
    let paymentIntent = invoice.payment_intent;

    let localInvoice = await stripeInvoiceModel.getByFields({ stripe_id: invoice.id });
    if (!localInvoice) {
      let invoiceModelEntry = {
        stripe_id: invoice.id,
        user_id: this.userID,
        role_id: this.roleID,
        billing_reason: invoice.billing_reason,
        subscription_stripe_id: invoice.subscription,
        customer_stripe_id: invoice.customer,
        charge_stripe_id: invoice.charge,
        collection_method: invoice.collection_method,
        currency: invoice.currency,
        invoice_url: invoice.hosted_invoice_url,
        invoice_pdf_url: invoice.invoice_pdf,
        payment_intent: invoice.payment_intent?.id ?? null,
        amount_due: helpers.convertFromCents(invoice.amount_due),
        amount_paid: helpers.convertFromCents(invoice.amount_paid),
        amount_total: helpers.convertFromCents(invoice.total),
        line_items: JSON.stringify(invoice.lines),
        payment_attempted: invoice.attempted == true ? 1 : 0,
        status: helpers.getMappingKey(stripeInvoiceModel.status_mapping, invoice.status),
        refunded: 0,
      };
      let createdInvoiceID = await stripeInvoiceModel.insert(invoiceModelEntry);
      if (!createdInvoiceID) {
        throw new Error('Internal Error: error creating invoice');
      }
    }

    if (subscription.status == 'incomplete' && invoice.status == 'open') {
      if (paymentIntent.status == 'requires_action') {
        let authLink = paymentIntent.next_action.use_stripe_sdk.stripe_js;
        throw { type: 'CardRequiresAction', message: 'Card requires confirmation', link: authLink };
      }
    }
    return subscription;
  };
  this.updateSubscription = async function (activeSubscription, user, fromPlan, newPlan, card, coupon) {
    let subscriptionStripeId = activeSubscription.stripe_id;

    let fromRegularToRegular = fromPlan.type == 0 && newPlan.type == 0 ? true : false;
    let fromTrialToRegular = (fromPlan.type == 3 || fromPlan.type == 4) && newPlan.type == 0 ? true : false;
    let fromRegularToTrial = fromPlan.type == 0 && (newPlan.type == 3 || newPlan.type == 4) ? true : false;
    let fromAnyToLifetime = newPlan.type == 1 || newPlan.type == 2 ? true : false;
    let fromLifetimeToAny = fromPlan.type == 1 || fromPlan.type == 2 ? true : false;

    if (fromRegularToTrial || fromTrialToRegular || fromRegularToRegular) {
      let subscription = await stripe.retrieveSubscription({ subscriptionId: subscriptionStripeId, params: {} });
      let updateParams = {
        default_payment_method: card?.stripe_card_id,
        cancel_at: '',
        items: [
          {
            id: subscription.items.data[0].id,
            price: newPlan.stripe_id,
          },
        ],
        coupon: coupon?.stripe_id ?? null,
        proration_behavior: 'create_prorations',
        payment_behavior: 'error_if_incomplete',
        // trial_from_plan: true,
      };
      if (fromRegularToTrial) {
        let trialPlanFullPeriod = calculateFullPeriod(newPlan.interval, newPlan.interval_count);
        updateParams.cancel_at = trialPlanFullPeriod;
      }
      let newSubscription = await stripe.updateSubscription({ subscriptionId: subscriptionStripeId, params: updateParams });

      let newSubscriptionModelEntry = {
        cancel_at_period_end: newSubscription.cancel_at_period_end ?? null,
        current_period_start: moment(new Date(newSubscription.current_period_start * 1000)).format('YYYY-MM-DD') ?? null,
        current_period_end: moment(new Date(newSubscription.current_period_end * 1000)).format('YYYY-MM-DD') ?? null,
        plan_id: newPlan?.id ?? null,
        coupon_stripe_id: newSubscription.discount?.coupon?.id ?? '',
        interval: helpers.getMappingKey(stripeSubscriptionModel.interval_mapping, newSubscription.plan?.interval) ?? 0,
        interval_count: newSubscription.plan?.interval_count ?? '',
        trial_period_days: newSubscription.plan?.trial_period_days ?? 0,
        trial_end: newSubscription.trial_end ? moment(new Date(newSubscription.trial_end * 1000)).format('YYYY-MM-DD') : null,
        trial_start: newSubscription.trial_start ? moment(new Date(newSubscription.subscriptiontrial_start * 1000)).format('YYYY-MM-DD') : null,
        status: helpers.getMappingKey(stripeSubscriptionModel.status_mapping, newSubscription.status) ?? null,
      };

      let subscriptionCreatedId = await stripeSubscriptionModel.edit(newSubscriptionModelEntry, activeSubscription.id);
      if (!subscriptionCreatedId) {
        throw new Error('Subscription is not found.');
      }

      let subscriptionLogUpdated = await this.updateSubscriptionLogByUser(activeSubscription.id, newSubscription.status, newPlan);
      if (!subscriptionLogUpdated) {
        throw new Error('Error while editing subscription log');
      }
      return subscriptionCreatedId;
    } else if (fromAnyToLifetime) {
      await this.cancelRegularSubscription(activeSubscription);
      await this.createLifetimeSubscription(user, newPlan, card, coupon);
    } else if (fromLifetimeToAny) {
      await this.cancelLifetimeSubscription(activeSubscription);
      if (newPlan.type == 0) {
        await this.createRegularSubscription(user, newPlan, card, coupon);
      } else if (newPlan.type == 1 || newPlan.type == 2) {
        await this.createLifetimeSubscription(user, newPlan, card, coupon);
      } else if (newPlan.type == 3 || newPlan.type == 4) {
        await this.createTrialSubscription(user, newPlan, card, coupon);
      }
    }
  };

  this.cancelRegularSubscription = async function (subscription) {
    var cancellationParams = {
      subscriptionId: subscription.stripe_id,
      params: {
        invoice_now: true,
        prorate: this.prorate == 'true' ? true : false,
      },
    };
    let subscriptionCanceled = await stripe.cancelSubscription(cancellationParams);

    let newStatus = helpers.getMappingKey(stripeSubscriptionModel.status_mapping, subscriptionCanceled.status);
    await stripeSubscriptionModel.edit({ status: newStatus }, subscription.id);

    let subscriptionLog = await stripeSubscriptionLogModel.getByFields({ subscription_id: parseInt(subscription.id), status: 1 });
    if (!subscriptionLog) {
      throw new Error("Internal Error: Couldn't find relative active subscription log");
    }
    let subscriptionLogEdited = await stripeSubscriptionLogModel.edit({ status: 0 }, subscriptionLog.id);
    if (!subscriptionLogEdited) {
      throw new Error("Internal Error: Couldn't Edit subscription log");
    }
  };
  this.suspendRegularSubscription = async function (subscription) {
    let updateParams = {
      subscriptionId: subscription.stripe_id,
      params: {
        cancel_at_period_end: true,
      },
    };
    await stripe.updateSubscription(updateParams);
    if (!(await stripeSubscriptionModel.edit({ cancel_at_period_end: 1 }, subscription.id))) {
      throw new Error('Internal Error: Error suspending subscription');
    }
  };
  this.suspendLifetimeSubscription = async function (subscription) {
    if (!(await stripeSubscriptionModel.edit({ cancel_at_period_end: 1 }, subscription.id))) {
      throw new Error('Internal Error: Error suspending subscription');
    }
  };

  this.cancelLifetimeSubscription = async function (subscription) {
    //TODO check if we refund on this or not
    //we could make a fixed refund amount
    //right now we just cancel it locally and refund is never as it is a onetime product thing.
    let subscriptionEdited = await stripeSubscriptionModel.edit({ status: 5 }, parseInt(subscription.id));
    if (!subscriptionEdited) {
      throw new Error("Couldn't edit subscription");
    }
    let subscriptionLog = await stripeSubscriptionLogModel.getByFields({ subscription_id: parseInt(subscription.id), status: 1 });
    if (!subscriptionLog) {
      throw new Error("Couldn't find relative active subscription log");
    }
    let subscriptionLogEdited = await stripeSubscriptionLogModel.edit({ status: 0 }, subscriptionLog.id);
    if (!subscriptionLogEdited) {
      throw new Error("Couldn't Edit subscription log");
    }
    return true;
  };
  this.createCustomerWithoutCard = async function (params) {
    let createdCustomer = await stripe.createCustomer(params);

    let userModelEntry = {
      stripe_id: createdCustomer.id,
    };

    let modelEditedUser = await userModel.edit(userModelEntry, this.userID);
    if (!modelEditedUser) {
      throw new Error('Internal error: Error editing user stripe id');
    }
    return modelEditedUser;
  };
  this.createCustomer = async function (params) {
    let createdCustomer = await stripe.createCustomer(params);
    let userModelEntry = {
      stripe_id: createdCustomer.id,
    };
    let editedUserModel = await userModel.edit(userModelEntry, this.userID);
    if (!editedUserModel) {
      throw new Error('Error editing user stripe id');
    }

    let customerCardParams = {
      customerId: createdCustomer.id,
      cardId: createdCustomer.default_source,
    };
    let card = await stripe.retrieveCard(customerCardParams);

    if (card) {
      cardModelEntry = {
        card_last: card.last4 ?? '',
        card_brand: card.brand ?? '',
        card_exp_month: card.exp_month ?? '',
        exp_year: card.exp_year ?? '',
        card_name: createdCustomer.metadata.card_name ?? '',
        stripe_card_customer: card.customer,
        stripe_card_id: card.id,
        is_default: createdCustomer.metadata.is_default,
        user_id: this.userID ?? null,
        role_id: this.roleID ?? null,
      };
      var modelCreatedCard = await stripeCardModel.insert(cardModelEntry);
      if (!modelCreatedCard) {
        throw new Error('Internal error: Error adding card');
      }
    }
    return modelCreatedCard;
  };

  this.adminCreateProductPrice = async function (productStripeId, productLocalId, price) {
    let priceArgs = {
      unit_amount: helpers.convertToCents(price),
      currency: this.currency,
      product: productStripeId,
    };
    let priceCreated = await stripe.createPrice(priceArgs);

    let productModelEditEntry = {
      price,
      price_stripe_id: priceCreated.id,
    };
    let modelEditedProduct = await stripeProductModel.edit(productModelEditEntry, productLocalId);
    if (!modelEditedProduct) {
      throw new Error('Internal Error: error setting price');
    }
    return priceCreated;
  };

  this._createStripeService = async function (params) {
    let serviceParams = {
      name: params.name,
      description: params.description,
      url: params.url,
      images: params.image ? [params.image] : [],
      active: parseInt(params.status) === 1 ? true : false,
    };

    return await stripe.createProduct(serviceParams);
  };
  this._createStripeProduct = async function (params) {
    let productParams = {
      name: params.name,
      active: parseInt(params.status) === 1 ? true : false,
      images: params.images ? [params.images] : [],
      description: params.description,
      shippable: parseInt(params.shippable) === 1 ? true : false,
      unit_label: params.unit_label,
      statement_descriptor: params.statement_descriptor,
    };

    return await stripe.createProduct(productParams);
  };

  /**
   * [adminCreateProduct                allows an admin to create a physical, digital goods or services]
   * @param  {object}   params          [object that contain needed parameters to create a said product or service]
   * @param  {strine}   type            [string that represents the type of the product]
   * @return {object}                   [product or service stripe id as well as product or service local id and if a product it also returns the price object stripe id]
   */
  this.adminCreateProduct = async function (params, type) {
    if (!params.name) {
      throw new Error('Must provide a name for your product');
    }
    if (!type) {
      throw new Error('Must provide a type for your product');
    }
    if (type === 'PRODUCT') {
      var createdStripeProduct = await this._createStripeProduct(params);
      let productModelEntry = {
        stripe_id: createdStripeProduct.id,
        name: createdStripeProduct.name,
        status: createdStripeProduct.active === true ? 1 : 0,
        description: createdStripeProduct.description ?? '',
        images: createdStripeProduct.images?.length > 0 ? createdStripeProduct.images[0] : '',
        shippable: createdStripeProduct.shippable ?? 0,
        unit_label: createdStripeProduct.unit_label ?? '',
        statement_descriptor: createdStripeProduct.statement_descriptor ?? '',
      };

      let modelCreatedServiceId = await stripeProductModel.insert(productModelEntry);
      let product = await stripeProductModel.getByPK(modelCreatedServiceId);

      return {
        productStripeId: product.stripe_id,
        productLocalId: product.id,
      };
    } else if (type === 'SERVICE') {
      var createdStripeService = await this._createStripeService(params);

      let serviceModelEntry = {
        name: createdStripeService.name,
        stripe_id: createdStripeService.id,
        status: createdStripeService.active === true ? 1 : 0,
        image: createdStripeService.images.length > 0 ? createdStripeService.images[0] : '',
        url: createdStripeService.url ?? '',
        description: createdStripeService.description ?? '',
      };
      let modelCreatedServiceId = await stripeServiceModel.insert(serviceModelEntry);
      let service = await stripeServiceModel.getByPK(modelCreatedServiceId);

      return {
        serviceStripeId: service.stripe_id,
        serviceLocalId: service.id,
      };
    }

    throw new Error('Missing plan type parameter.');
  };
  this.reactivateRegularSubscription = async function (subscription) {
    let updateParams = {
      subscriptionId: subscription.stripe_id,
      params: {
        cancel_at_period_end: false,
      },
    };
    await stripe.updateSubscription(updateParams);
    if (!(await stripeSubscriptionModel.edit({ cancel_at_period_end: 0 }, subscription.id))) {
      throw new Error('Internal Error: Error reactivating subscription');
    }
  };
  this.reactivateLifetimeSubscription = async function (subscription) {
    if (!(await stripeSubscriptionModel.edit({ cancel_at_period_end: 0 }, subscription.id))) {
      throw new Error('Internal Error: Error reactivating subscription');
    }
  };
  /**
   * [adminUpdateService                allows an admin to update certain field of a service]
   * @param  {object}   params          [object that contain parameters to be edited]
   * @param  {integer}  serviceId       [integer that represents service local primary key (id) in database]
   * @return {object}                   [return updated service object]
   */
  this.adminUpdateService = async function (params, serviceId) {
    let service = await stripeServiceModel.getByPK(serviceId);

    await stripe.updateProduct({ productId: service.stripe_id, params });
    let updateParams = {
      name: params.name,
      status: params.active ? 1 : 0,
    };
    let updatedService = await stripeServiceModel.edit(updateParams, serviceId);
    if (!updatedService) {
      throw new Error('Internal Error: Error editing service');
    }
    return updatedService;
  };
  /**
   * [adminUpdateProduct                allows an admin to update certain field of a product]
   * @param  {object}   params          [object that contain parameters to be edited]
   * @param  {integer}  productId       [integer that represents product local primary key (id) in database]
   * @return {object}                   [return updated product object]
   */
  this.adminUpdateProduct = async function (params, productId) {
    let product = await stripeProductModel.getByPK(productId);

    await stripe.updateProduct({ productId: product.stripe_id, params });
    let updateParams = {
      name: params.name,
      status: params.active ? 1 : 0,
    };
    let updatedProduct = await stripeProductModel.edit(updateParams, productId);
    if (!updatedProduct) {
      throw new Error('Internal Error: Error editing product');
    }
    return updatedProduct;
  };
  /**
   * [adminCreateRegularPlan       allows an admin to create subscription plan through admin portal]
   * @param  {object}   params      [object that contain plan parameters]
   * @param  {integer}  planType        [integer that represent plan type in relative to stripe plans table] @see /models/stripe_plans.js type_mapping()
   * @param  {integer}  localProductId  [integer that represent product id in relative to stripe products table]
   * @return {integer}                  [the id of the created plan in database]
   */
  this.adminCreateRegularPlan = async function (params, planType, localServiceId) {
    if (!params.interval) {
      throw new Error('Must have a recurring parameter with interval value set');
    }
    if (!params.nickname) {
      throw new Error('Must have a display name');
    }
    if (!localServiceId) {
      throw new Error('Must provide system product id');
    }
    if (planType === null || undefined) {
      throw new Error('Must provide plan type');
    }

    let service = await stripeServiceModel.getByPK(localServiceId);

    let stripePlanCreated = await this._createStripeRegularPlan(params, service);

    let planModelEntry = {
      nickname: stripePlanCreated.nickname,
      stripe_id: stripePlanCreated.id,
      stripe_product_id: stripePlanCreated.product,
      amount: stripePlanCreated.unit_amount / 100,
      interval: helpers.getMappingKey(stripePlanModel.interval_mapping, stripePlanCreated.recurring.interval),
      interval_count: stripePlanCreated.recurring.interval_count,
      trial_period_days: stripePlanCreated.recurring.trial_period_days ?? 0,
      service_id: localServiceId,
      status: stripePlanCreated.active === true ? 1 : 0,
      type: parseInt(planType),
    };

    let modelCreatedPlan = await stripePlanModel.insert(planModelEntry);

    if (!modelCreatedPlan) {
      throw new Error('Internal error: error creating plan');
    }
    return modelCreatedPlan;
  };

  this._createStripeRegularPlan = async function (params, service) {
    let stripeSubscriptionPlanParams = {
      nickname: params.nickname,
      currency: this.currency,
      unit_amount: helpers.convertToCents(params.amount),
      product: service.stripe_id,
      recurring: {
        interval: stripePlanModel.interval_mapping()[params.interval],
        interval_count: params.interval_count,
        trial_period_days: params.trial_period_days,
      },
      active: parseInt(params.status) === 1 ? true : false,
    };
    return await stripe.createPrice(stripeSubscriptionPlanParams);
  };
  this._createStripeLifetimePlan = async function (params, service) {
    //stripe doesn't have lifetime plans
    //how it works is a price is created with no recurring parameter as a single time product
    //which acts and dealt with internally within our system as a lifetime plan.
    let stripeSubscriptionPlanParams = {
      nickname: params.nickname,
      currency: this.currency,
      unit_amount: helpers.convertToCents(params.amount),
      product: service.stripe_id,
      active: parseInt(params.status) === 1 ? true : false,
    };
    return await stripe.createPrice(stripeSubscriptionPlanParams);
  };
  this._createStripeTrialOnlyPlan = async function (params, service) {
    let trialOnlyPlanParams = {
      nickname: params.nickname,
      currency: this.currency,
      unit_amount: helpers.convertToCents(params.amount),
      recurring: {
        interval: stripePlanModel.interval_mapping()[params.interval],
        interval_count: params.interval_count,
      },
      product: service.stripe_id,
      active: parseInt(params.status) === 1 ? true : false,
    };
    return await stripe.createPrice(trialOnlyPlanParams);
  };
  this._deactivateStripeLifetimePlan = async function (planStripeId) {
    //stripe doesn't allow deleting a price. will be set to unactive instead
    return await stripe.updatePrice({ priceId: planStripeId, params: { active: false } });
  };

  this.adminCreateLifetimePlan = async function (params, planType, localServiceId) {
    if (!params.nickname) {
      throw new Error('Must have a display name');
    }
    if (!localServiceId) {
      throw new Error('Must provide system product id');
    }
    if (planType === null || undefined) {
      throw new Error('Must provide plan type');
    }
    if (parseInt(params.interval) !== 4) {
      throw new Error('Interval must be "forever".');
    }

    let service = await stripeServiceModel.getByPK(localServiceId);
    let stripePlanCreated = await this._createStripeLifetimePlan(params, service);

    let planModelEntry = {
      stripe_product_id: stripePlanCreated.product ?? '',
      stripe_id: stripePlanCreated.id ?? '',
      amount: stripePlanCreated.unit_amount / 100,
      interval: 4,
      interval_count: null,
      trial_period_days: null,
      nickname: stripePlanCreated.nickname ?? '',
      service_id: localServiceId,
      status: stripePlanCreated.active === true ? 1 : 0,
      type: parseInt(planType),
    };

    let modelCreatedPlan = await stripePlanModel.insert(planModelEntry);
    if (!modelCreatedPlan) {
      throw new Error('Internal error: error creating plan');
    }

    return modelCreatedPlan;
  };

  this.adminCreateTrialPlan = async function (params, planType, localServiceId) {
    if (!params.interval) {
      throw new Error('Must have a recurring parameter with interval value set');
    }
    if (!params.nickname) {
      throw new Error('Must have a display name');
    }
    if (!localServiceId) {
      throw new Error('Must provide system product id');
    }
    if (planType === null || undefined) {
      throw new Error('Must provide plan type');
    }

    let service = await stripeServiceModel.getByPK(localServiceId);
    let priceCreated = await this._createStripeTrialOnlyPlan(params, service);

    let planModelEntry = {
      stripe_product_id: priceCreated.product,
      stripe_id: priceCreated.id,
      amount: priceCreated.unit_amount / 100,
      interval: helpers.getMappingKey(stripePlanModel.interval_mapping, priceCreated.recurring.interval),
      interval_count: priceCreated.recurring.interval_count,
      trial_period_days: priceCreated.recurring.trial_period_days ?? 0,
      nickname: priceCreated.nickname,
      service_id: localServiceId,
      status: priceCreated.active ? 1 : 0,
      type: parseInt(planType),
    };
    let modelCreatedPlan = await stripePlanModel.insert(planModelEntry);
    if (!modelCreatedPlan) {
      throw new Error('Internal error: error creating plan');
    }
    return modelCreatedPlan;
  };

  this.adminEditPlan = async function (params, price) {
    await stripe.updatePrice({ priceId: price.stripe_id, params });
    let updateParams = {
      nickname: params.nickname,
      status: params.active ? 1 : 0,
    };
    let updatedPrice = await stripePlanModel.edit(updateParams, price.id);
    if (!updatedPrice) {
      throw new Error('Internal error: error editing plan');
    }
    return true;
  };
  this.adminCancelSubscription = async function (subscriptionId) {
    let subscriptionToCancel = await stripeSubscriptionModel.getByPK(subscriptionId);
    let subscriptionLog = await stripeSubscriptionLogModel.getByFields({ subscription_id: subscriptionId });
    let subscriptionPlan = await stripePlanModel.getByPK(subscriptionToCancel.plan_id);
    if (!subscriptionToCancel || !subscriptionPlan) {
      throw new Error('No subscription or plan of that id');
    }
    let subscirptionType = subscriptionPlan.type;

    switch (subscirptionType) {
      case 0:
      case 3:
      case 4:
        let cancelSubscriptionParams = {
          subscriptionId: subscriptionToCancel.stripe_id,
          params: {
            prorate: this.prorate == 'true' ? true : false,
            invoice_now: true,
          },
        };
        let subscriptionCanceled = await stripe.cancelSubscription(cancelSubscriptionParams);
        let localCancellationParams = {
          status: helpers.getMappingKey(stripeSubscriptionModel.status_mapping, subscriptionCanceled.status),
        };
        await stripeSubscriptionModel.edit(localCancellationParams, subscriptionId);
        await stripeSubscriptionLogModel.edit({ status: 0 }, subscriptionLog.id);
        return subscriptionCanceled;
      case 1:
      case 2:
        await stripeSubscriptionModel.edit({ status: 5 }, subscriptionId);
        await stripeSubscriptionLogModel.edit({ status: 0 }, subscriptionLog.id);
      default:
        throw new Error('Something wrong');
    }
    return true;
  };
  this.userAddCard = async function (cardParams) {
    let createdCard = await stripe.createCard(cardParams);

    if (createdCard) {
      if (createdCard.metadata.is_default == '1') {
        let customerUpdateParams = {
          customerId: createdCard.customer,
          params: { default_source: createdCard.id },
        };
        await stripe.updateCustomer(customerUpdateParams);
        let defaultCards = await stripeCardModel.getAll({ is_default: 1 });
        if (defaultCards.length > 0) {
          defaultCards.forEach(async (card) => {
            await stripeCardModel.edit({ is_default: 0 }, card.id);
          });
        }
      }
      cardModelEntry = {
        card_last: createdCard.last4 ?? '',
        card_brand: createdCard.brand ?? '',
        card_exp_month: createdCard.exp_month ?? '',
        exp_year: createdCard.exp_year ?? '',
        card_name: createdCard.metadata.card_name ?? '',
        stripe_card_customer: createdCard.customer,
        stripe_card_id: createdCard.id,
        is_default: createdCard.metadata.is_default,
        user_id: this.userID ?? null,
        role_id: this.roleID ?? null,
      };
      var modelCreatedCard = await stripeCardModel.insert(cardModelEntry);
      if (!modelCreatedCard) {
        throw new Error('Internal error: Error adding card');
      }
    }
    return modelCreatedCard;
  };
  this.adminCreateCoupon = async function (params) {
    helpers.checkFor({ name: params.name, duration: params.duration, usage_limit: params.usage_limit, amount: params.amount, amount_type: params.amount_type });

    let couponStripeParams = {
      name: params.name,
      duration: stripeCouponModel.duration_mapping()[params.duration].toLowerCase(),
      max_redemptions: params.usage_limit,
      metadata: {
        slug: params.slug,
      },
    };
    switch (params.amount_type) {
      case '0': {
        if (params.amount > 100) {
          throw new Error("Percentage can't be over 100");
        }
        couponStripeParams['percent_off'] = params.amount;
        break;
      }
      case '1': {
        couponStripeParams['amount_off'] = helpers.convertToCents(params.amount);
        couponStripeParams['currency'] = this.currency;
        break;
      }
    }
    const coupon = await stripe.createCoupon(couponStripeParams);

    let couponModelEntry = {
      stripe_id: coupon.id,
      name: coupon.name,
      slug: coupon.metadata.slug,
      duration: helpers.getMappingKey(stripeCouponModel.duration_mapping, coupon.duration),
      usage_limit: coupon.max_redemptions,
      amount: coupon.percent_off ?? helpers.convertFromCents(coupon.amount_off),
      amount_type: coupon.percent_off ? 0 : 1,
      current_usage_limit: coupon.max_redemptions,
      status: helpers.getMappingKey(stripeCouponModel.status_mapping, 'active'),
    };
    let localCoupon = await stripeCouponModel.insert(couponModelEntry);
    if (!localCoupon) {
      throw new Error('Internal error: Error adding coupon');
    }
    return localCoupon;
  };
  this.createSession = async function (params) {
    let productID = params.product_id;

    let user = await userModel.getByPK(this.userID);
    let price = await stripeProductModel.getByPK(productID);
    params = {
      success_url: `${process.env.BASE_URL}/member/checkout/item/completed`,
      cancel_url: `${process.env.BASE_URL}/member/checkout/item/cancelled`,
      payment_method_types: ['card'],
      mode: 'payment',
      line_items: [{ price: price.price_stripe_id, quantity: 1 }],
      customer: user.stripe_id,
      payment_intent_data: {
        setup_future_usage: 'on_session',
      },
    };
    let session = await stripe.createSession(params);

    let sessionModelEntry = {
      object: session.object,
      stripe_id: session.id,
      amount_total: helpers.convertFromCents(session.amount_total),
      payment_intent: session.payment_intent,
      payment_method_types: JSON.stringify(session.payment_method_types),
      currency: session.currency,
      user_id: this.userID,
      role_id: this.roleID,
      status: helpers.getMappingKey(stripeCheckoutSessionModel.status_mapping, session.payment_status),
    };

    let createdLocalSession = await stripeCheckoutSessionModel.insert(sessionModelEntry);
    if (!createdLocalSession) {
      throw new Error('Internal error: Error creating session');
    }
    return session;
  };
  this.refundInvoice = async function (invoiceID) {
    let localInvoice = await stripeInvoiceModel.getByPK(invoiceID);

    let localPayment = await stripePaymentModel.getByFields({ stripe_id: localInvoice.charge_stripe_id });

    let params = {
      charge: localInvoice.charge_stripe_id,
      amount: helpers.convertToCents(localInvoice.amount_paid),
    };
    let refunded = await stripe.createRefund(params);
    let refundModelEntry = {
      stripe_id: refunded.id,
      stripe_invoice_id: localInvoice.stripe_id,
      charge_stripe_id: refunded.charge,
      payment_intent: refunded.payment_intent,
      amount: helpers.convertFromCents(refunded.amount),
      balance_transaction: refunded.balance_transaction,
      reason: refunded.reason ?? '',
      status: helpers.getMappingKey(stripeRefundModel.status_mapping, refunded.status),
      receipt_number: refunded.receipt_number,
    };
    let createdRefund = await stripeRefundModel.insert(refundModelEntry);
    if (!createdRefund) {
      throw new Error('Internal error: Error creating refund');
    }

    let yesIndex = helpers.getMappingKey(stripeInvoiceModel.refunded_mapping, 'Yes');

    let editedInvoice = await stripeInvoiceModel.edit({ refunded: yesIndex }, localInvoice.id);
    if (!editedInvoice) {
      throw new Error('Internal error: Error editing invoice');
    }

    let editedPayment = await stripePaymentModel.edit({ refunded: yesIndex }, localPayment.id);
    if (!editedPayment) {
      throw new Error('Internal error: Error editing payment');
    }

    return;
  };
}