Update a purchase order using a custom field's unique value

//native

type Zoho = {

  token: string;

};

/**

 * Update a purchase order using a custom field's unique value

 * A custom field will have unique values if it's configured to not accept duplicate values.

 */

export async function main(

  auth: Zoho,

  organization_id: string | undefined,

  X_Unique_Identifier_Key: string,

  X_Unique_Identifier_Value: string,

  body: {

    vendor_id: string;

    currency_id?: string;

    contact_persons?: string[];

    purchaseorder_number?: string;

    gst_treatment?: string;

    tax_treatment?: {};

    gst_no?: string;

    source_of_supply?: string;

    destination_of_supply?: string;

    place_of_supply?: string;

    pricebook_id?: string;

    reference_number?: string;

    discount?: string;

    discount_account_id?: string;

    is_discount_before_tax?: false | true;

    billing_address_id?: number;

    crm_owner_id?: string;

    crm_custom_reference_id?: number;

    template_id?: string;

    date?: string;

    delivery_date?: string;

    due_date?: string;

    exchange_rate?: number;

    is_inclusive_tax?: false | true;

    notes?: string;

    notes_default?: string;

    terms?: string;

    terms_default?: string;

    ship_via?: string;

    delivery_org_address_id?: string;

    delivery_customer_id?: string;

    attention?: string;

    vat_treatment?: string;

    is_update_customer?: string;

    salesorder_id?: number;

    location_id?: string;

    line_items: {

      line_item_id?: string;

      item_id?: string;

      account_id?: string;

      name?: string;

      description?: string;

      unit?: string;

      location_id?: string;

      hsn_or_sac?: string;

      reverse_charge_tax_id?: string;

      rate?: number;

      quantity?: string;

      item_order?: number;

      tax_id?: string;

      tds_tax_id?: string;

      tax_treatment_code?: string;

      tax_exemption_code?: string;

      tax_exemption_id?: string;

      acquisition_vat_id?: string;

      reverse_charge_vat_id?: string;

      item_custom_fields?: { index?: number; value?: string }[];

      tags?: { tag_id?: number; tag_option_id?: number }[];

      project_id?: string;

    }[];

    custom_fields?: { customfield_id?: number; value?: string }[];

    documents?: { document_id?: number; file_name?: string }[];

  },

  X_Upsert?: string,

) {

  const url = new URL(`https://www.zohoapis.com/books/v3/purchaseorders`);

  for (const [k, v] of [["organization_id", organization_id]]) {

    if (v !== undefined && v !== "" && k !== undefined) {

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "PUT",

    headers: {

      "X-Unique-Identifier-Key": X_Unique_Identifier_Key,

      "X-Unique-Identifier-Value": X_Unique_Identifier_Value,

      ...(X_Upsert ? { "X-Upsert": X_Upsert } : {}),

      "Content-Type": "application/json",

      Authorization: "Zoho-oauthtoken " + auth.token,

    },

    body: JSON.stringify(body),

  });

  if (!response.ok) {

    const text = await response.text();

    throw new Error(`${response.status} ${text}`);

  }

  return await response.json();

}