export type SalesforceFieldMap = {
  account: {
    internetEligibility: string;
    customerNumber: string;
  };
  product: {
    // Core fields (all products)
    sku: string;
    portalCategory: string;
    portalCatalog: string;
    portalAccessible: string;
    itemClass: string;
    billingCycle: string;
    whmcsProductId: string;
    whmcsProductName: string;

    // Internet fields (simple)
    internetPlanTier: string; // Silver | Gold | Platinum
    internetOfferingType: string; // For eligibility filtering
    displayOrder: string; // For proper product ordering
    bundledAddon: string; // Lookup to bundled product
    isBundledAddon: string; // Checkbox for bundled products

    // SIM fields (unchanged)
    simDataSize: string;
    simPlanType: string;
    simHasFamilyDiscount: string;

    // VPN fields
    vpnRegion: string;
  };
  order: {
    // Core fields
    orderType: string;

    // Activation fields
    activationType: string;
    activationScheduledAt: string;
    activationStatus: string;

    // Internet fields (independent fields synced with OrderItems)
    internetPlanTier: string; // Silver | Gold | Platinum (syncs with OrderItems)
    installationType: string; // Single | 12-Month | 24-Month (syncs with OrderItems)
    weekendInstall: string; // Checkbox (syncs with OrderItems)
    accessMode: string; // IPoE-BYOR | IPoE-HGW | PPPoE (operator sets)
    hikariDenwa: string; // Checkbox - customer selected Hikari Denwa

    // VPN fields
    vpnRegion: string; // Customer selection (same product, different regions)

    // SIM fields
    simType: string; // eSIM | Physical SIM (customer selection)
    eid: string; // Customer input for eSIM
    simVoiceMail: string; // Checkbox - customer selected Voice Mail add-on
    simCallWaiting: string; // Checkbox - customer selected Call Waiting add-on

    // MNP fields
    mnp: {
      application: string;
      reservationNumber: string;
      expiryDate: string;
      phoneNumber: string;
      mvnoAccountNumber: string;
      portingDateOfBirth: string;
      portingFirstName: string;
      portingLastName: string;
      portingFirstNameKatakana: string;
      portingLastNameKatakana: string;
      portingGender: string;
    };

    // WHMCS integration
    whmcsOrderId: string;

    // Provisioning diagnostics
    lastErrorCode?: string;
    lastErrorMessage?: string;
    lastAttemptAt?: string;

    // Address fields
    addressChanged: string;

    // Billing address snapshot fields
    billing: {
      street: string;
      city: string;
      state: string;
      postalCode: string;
      country: string;
    };
  };
  orderItem: {
    billingCycle: string;
    whmcsServiceId: string;
  };
};

export function getSalesforceFieldMap(): SalesforceFieldMap {
  return {
    account: {
      internetEligibility:
        process.env.ACCOUNT_INTERNET_ELIGIBILITY_FIELD || "Internet_Eligibility__c",
      customerNumber: process.env.ACCOUNT_CUSTOMER_NUMBER_FIELD || "SF_Account_No__c",
    },
    product: {
      // Core fields (all products)
      sku: process.env.PRODUCT_SKU_FIELD || "StockKeepingUnit",
      portalCategory: process.env.PRODUCT_PORTAL_CATEGORY_FIELD || "Product2Categories1__c",
      portalCatalog: process.env.PRODUCT_PORTAL_CATALOG_FIELD || "Portal_Catalog__c",
      portalAccessible: process.env.PRODUCT_PORTAL_ACCESSIBLE_FIELD || "Portal_Accessible__c",
      itemClass: process.env.PRODUCT_ITEM_CLASS_FIELD || "Item_Class__c",
      billingCycle: process.env.PRODUCT_BILLING_CYCLE_FIELD || "Billing_Cycle__c",
      whmcsProductId: process.env.PRODUCT_WHMCS_PRODUCT_ID_FIELD || "WH_Product_ID__c",
      whmcsProductName: process.env.PRODUCT_WHMCS_PRODUCT_NAME_FIELD || "WH_Product_Name__c",

      // Internet fields (simple)
      internetPlanTier: process.env.PRODUCT_INTERNET_PLAN_TIER_FIELD || "Internet_Plan_Tier__c",
      internetOfferingType:
        process.env.PRODUCT_INTERNET_OFFERING_TYPE_FIELD || "Internet_Offering_Type__c",
      displayOrder: process.env.PRODUCT_DISPLAY_ORDER_FIELD || "Catalog_Order__c",
      bundledAddon: process.env.PRODUCT_BUNDLED_ADDON_FIELD || "Bundled_Addon__c",
      isBundledAddon: process.env.PRODUCT_IS_BUNDLED_ADDON_FIELD || "Is_Bundled_Addon__c",

      // SIM fields (unchanged)
      simDataSize: process.env.PRODUCT_SIM_DATA_SIZE_FIELD || "SIM_Data_Size__c",
      simPlanType: process.env.PRODUCT_SIM_PLAN_TYPE_FIELD || "SIM_Plan_Type__c",
      simHasFamilyDiscount:
        process.env.PRODUCT_SIM_HAS_FAMILY_DISCOUNT_FIELD || "SIM_Has_Family_Discount__c",

      // VPN fields
      vpnRegion: process.env.PRODUCT_VPN_REGION_FIELD || "VPN_Region__c",
    },
    order: {
      // Core fields
      orderType: process.env.ORDER_TYPE_FIELD || "Type",

      // Activation fields
      activationType: process.env.ORDER_ACTIVATION_TYPE_FIELD || "Activation_Type__c",
      activationScheduledAt:
        process.env.ORDER_ACTIVATION_SCHEDULED_AT_FIELD || "Activation_Scheduled_At__c",
      activationStatus: process.env.ORDER_ACTIVATION_STATUS_FIELD || "Activation_Status__c",

      // Internet fields (independent fields synced with OrderItems)
      internetPlanTier: process.env.ORDER_INTERNET_PLAN_TIER_FIELD || "Internet_Plan_Tier__c",

      installationType: process.env.ORDER_INSTALLATION_TYPE_FIELD || "Installment_Plan__c",
      weekendInstall: process.env.ORDER_WEEKEND_INSTALL_FIELD || "Weekend_Install__c",
      accessMode: process.env.ORDER_ACCESS_MODE_FIELD || "Access_Mode__c",
      hikariDenwa: process.env.ORDER_HIKARI_DENWA_FIELD || "Hikari_Denwa__c",

      // VPN fields
      vpnRegion: process.env.ORDER_VPN_REGION_FIELD || "VPN_Region__c",

      // SIM fields
      simType: process.env.ORDER_SIM_TYPE_FIELD || "SIM_Type__c",
      eid: process.env.ORDER_EID_FIELD || "EID__c",
      simVoiceMail: process.env.ORDER_SIM_VOICE_MAIL_FIELD || "SIM_Voice_Mail__c",
      simCallWaiting: process.env.ORDER_SIM_CALL_WAITING_FIELD || "SIM_Call_Waiting__c",

      // MNP fields
      mnp: {
        application: process.env.ORDER_MNP_APPLICATION_FIELD || "MNP_Application__c",
        reservationNumber: process.env.ORDER_MNP_RESERVATION_FIELD || "MNP_Reservation_Number__c",
        expiryDate: process.env.ORDER_MNP_EXPIRY_FIELD || "MNP_Expiry_Date__c",
        phoneNumber: process.env.ORDER_MNP_PHONE_FIELD || "MNP_Phone_Number__c",
        mvnoAccountNumber: process.env.ORDER_MVNO_ACCOUNT_NUMBER_FIELD || "MVNO_Account_Number__c",
        portingDateOfBirth: process.env.ORDER_PORTING_DOB_FIELD || "Porting_DateOfBirth__c",
        portingFirstName: process.env.ORDER_PORTING_FIRST_NAME_FIELD || "Porting_FirstName__c",
        portingLastName: process.env.ORDER_PORTING_LAST_NAME_FIELD || "Porting_LastName__c",
        portingFirstNameKatakana:
          process.env.ORDER_PORTING_FIRST_NAME_KATAKANA_FIELD || "Porting_FirstName_Katakana__c",
        portingLastNameKatakana:
          process.env.ORDER_PORTING_LAST_NAME_KATAKANA_FIELD || "Porting_LastName_Katakana__c",
        portingGender: process.env.ORDER_PORTING_GENDER_FIELD || "Porting_Gender__c",
      },

      // WHMCS integration
      whmcsOrderId: process.env.ORDER_WHMCS_ORDER_ID_FIELD || "WHMCS_Order_ID__c",

      // Diagnostics (optional fields) — single source of truth: Activation_* fields
      lastErrorCode: process.env.ORDER_ACTIVATION_ERROR_CODE_FIELD || "Activation_Error_Code__c",
      lastErrorMessage:
        process.env.ORDER_ACTIVATION_ERROR_MESSAGE_FIELD || "Activation_Error_Message__c",
      lastAttemptAt: process.env.ORDER_ACTIVATION_LAST_ATTEMPT_AT_FIELD || "ActivatedDate",

      // Address fields
      addressChanged: process.env.ORDER_ADDRESS_CHANGED_FIELD || "Address_Changed__c",

      // Billing address snapshot fields — single source of truth: Billing* fields on Order
      billing: {
        street: process.env.ORDER_BILLING_STREET_FIELD || "BillingStreet",
        city: process.env.ORDER_BILLING_CITY_FIELD || "BillingCity",
        state: process.env.ORDER_BILLING_STATE_FIELD || "BillingState",
        postalCode: process.env.ORDER_BILLING_POSTAL_CODE_FIELD || "BillingPostalCode",
        country: process.env.ORDER_BILLING_COUNTRY_FIELD || "BillingCountry",
      },
    },
    orderItem: {
      billingCycle: process.env.ORDER_ITEM_BILLING_CYCLE_FIELD || "Billing_Cycle__c",
      whmcsServiceId: process.env.ORDER_ITEM_WHMCS_SERVICE_ID_FIELD || "WHMCS_Service_ID__c",
    },
  };
}

// Helper functions for commonly used field combinations
export function getProductQueryFields(): string {
  const fields = getSalesforceFieldMap();
  return [
    "Id",
    "Name",
    fields.product.sku,
    fields.product.portalCategory,
    fields.product.portalCatalog,
    fields.product.portalAccessible,
    fields.product.itemClass,
    fields.product.billingCycle,
    fields.product.whmcsProductId,
    fields.product.whmcsProductName,
    fields.product.internetPlanTier,
    fields.product.internetOfferingType,
    fields.product.displayOrder,
    fields.product.bundledAddon,
    fields.product.isBundledAddon,

    fields.product.simDataSize,
    fields.product.simPlanType,
    fields.product.simHasFamilyDiscount,
  ].join(", ");
}

export function getOrderQueryFields(): string {
  const fields = getSalesforceFieldMap();
  return [
    "Id",
    "AccountId",
    "Status",
    "EffectiveDate",
    fields.order.orderType,
    fields.order.activationType,
    fields.order.activationScheduledAt,
    fields.order.activationStatus,
    fields.order.lastErrorCode,
    fields.order.lastErrorMessage,
    fields.order.lastAttemptAt,
    // Internet fields
    fields.order.internetPlanTier,
    fields.order.installationType,
    fields.order.weekendInstall,
    fields.order.accessMode,
    fields.order.hikariDenwa,
    // VPN fields
    fields.order.vpnRegion,
    // SIM fields
    fields.order.simType,
    fields.order.simVoiceMail,
    fields.order.simCallWaiting,

    fields.order.eid,
    fields.order.whmcsOrderId,
  ].join(", ");
}

// Build a nested select list for PricebookEntry.Product2.* fields used in OrderItem queries
export function getOrderItemProduct2Select(additional: string[] = []): string {
  const fields = getSalesforceFieldMap();
  const base = [
    "Id",
    "Name",
    fields.product.sku,
    fields.product.whmcsProductId,
    fields.product.itemClass,
    fields.product.billingCycle,
  ];
  const all = [...base, ...additional];
  return all.map(f => `PricebookEntry.Product2.${f}`).join(", ");
}