Merge pull request #2 from Eledio/feature/obtainPDFInvoice

Obtain PDF version of the invoice

docs/source/conf.py

@@ -4,31 +4,31 @@
 # https://www.sphinx-doc.org/en/master/usage/configuration.html
 import os
 import sys
-sys.path.insert(0, os.path.abspath('../..'))
+
+sys.path.insert(0, os.path.abspath("../.."))
 
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
 
-project = 'SuperFaktura API client'
-copyright = '2025, Richard Kubíček, Eledio s.r.o.'
-author = 'Richard Kubíček'
+project = "SuperFaktura API client"
+copyright = "2025, Richard Kubíček, Eledio s.r.o."
+author = "Richard Kubíček"
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
 
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.napoleon',
-    'sphinx.ext.autosummary',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.napoleon",
+    "sphinx.ext.autosummary",
 ]
 
-templates_path = ['_templates']
+templates_path = ["_templates"]
 exclude_patterns = []
 
 
-
 # -- Options for HTML output -------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
 
-html_theme = 'sphinx_rtd_theme'
-html_static_path = ['_static']
+html_theme = "sphinx_rtd_theme"
+html_static_path = ["_static"]

docs/source/examples.rst

@@ -0,0 +1,19 @@
+Examples of SuperFaktura API client usage
+====================
+
+
+Add Invoice
+---------------------------------
+
+.. automodule:: examples.add_invoice
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
+Get country list
+------------------------------------
+
+.. automodule:: examples.get_country_list
+   :members:
+   :undoc-members:
+   :show-inheritance:

docs/source/index.rst

@@ -6,3 +6,4 @@ Welcome to SuperFaktura Client's documentation
 
    superfaktura
    installation
+   examples

examples/add_invoice.py

@@ -0,0 +1,87 @@
+"""
+Main script to add an invoice and save it as a PDF using the SuperFaktura API.
+
+This script demonstrates how to create an invoice with multiple items,
+retrieve the invoice as a PDF, and save the PDF to a file.
+
+Usage:
+    Run this script directly to create and save an invoice PDF.
+
+Dependencies:
+    - superfaktura.bank_account.BankAccount
+    - superfaktura.client_contacts.ClientContactModel
+    - superfaktura.enumerations.currency.Currencies
+    - superfaktura.enumerations.language.Language
+    - superfaktura.invoice.Invoice
+    - superfaktura.invoice.InvoiceModel
+    - superfaktura.invoice.InvoiceType
+    - superfaktura.invoice.InvoiceItem
+    - superfaktura.invoice.InvoiceSettings
+    - superfaktura.utils.data_types.Date
+"""
+
+from superfaktura.bank_account import BankAccount, NoDefaultBankAccountException
+from superfaktura.client_contacts import ClientContactModel
+from superfaktura.enumerations.currency import Currencies
+from superfaktura.enumerations.language import Language
+from superfaktura.invoice import (
+    Invoice,
+    InvoiceModel,
+    InvoiceType,
+    InvoiceItem,
+    InvoiceSettings,
+)
+from superfaktura.utils.data_types import Date
+
+
+def main():
+    """
+    Main function to add Invoice and save it as a pdf using the SuperFaktura API.
+    """
+    invoice = Invoice()
+    bank = BankAccount()
+    try:
+        # Get default bank account
+        bank_account = bank.default().as_dict()
+    except NoDefaultBankAccountException as e:
+        print(f"Error getting default bank account: {e}")
+        bank_account = {}
+    resp = invoice.add(
+        invoice_model=InvoiceModel(
+            type=InvoiceType.INVOICE,
+            name="My First Invoice",
+            due=Date("2025-04-01"),
+            invoice_currency=Currencies.EUR,
+            header_comment="We invoice you for services",
+            bank_accounts=[bank_account],
+        ),
+        items=[
+            InvoiceItem(
+                name="Website Development", unit_price=1000.0, quantity=1, tax=20
+            ),
+            InvoiceItem(
+                name="Hosting Service (1 year)", unit_price=500.0, quantity=1, tax=20
+            ),
+        ],
+        contact=ClientContactModel(
+            name="John Doe",
+            email="john.doe@examle.com",
+            phone="+1 555-1234",
+            address="123 Main Street, New York",
+            ico="987654321",
+            update=True,
+            country_id=225,
+        ),
+        invoice_settings=InvoiceSettings(language=Language.English),
+    )
+
+    try:
+        with open("invoice.pdf", "wb") as f:
+            invoice.get_pdf(invoice=resp, descriptor=f, language=Language.English)
+        print("Invoice saved to 'invoice.pdf'")
+    except Exception as e:
+        print(f"Error generating or saving invoice as PDF: {e}")
+
+
+if __name__ == "__main__":
+    main()

examples/get_country_list.py

@@ -0,0 +1,18 @@
+"""
+This script retrieves and prints the list of countries using the SuperFaktura API.
+"""
+
+from pprint import pprint
+
+from superfaktura.utils.country import country_list
+
+
+def main():
+    """
+    Main function to retrieve and print the list of countries using the SuperFaktura API.
+    """
+    pprint(country_list())
+
+
+if __name__ == "__main__":
+    main()

ruff.toml

@@ -0,0 +1,5 @@
+[lint]
+ignore = [
+    # Use a single `if` statement instead of nested `if` statements
+    "SIM102",
+]

setup.py

@@ -1,15 +1,12 @@
 from setuptools import setup, find_namespace_packages
 
 setup(
-    name='superfaktura_client',
-    version='0.1.0',
+    name="superfaktura_client",
+    version="0.1.0",
     packages=find_namespace_packages(),
-    url='https://github.com/eledio-helpers/superfaktura-client',
-    license='GNU GPLv3',
-    author='Richard Kubíček',
-    author_email='kubicekr@eledio.com',
-    install_requires=[
-        "requests",
-        "python-dotenv"
-    ],
+    url="https://github.com/eledio-helpers/superfaktura-client",
+    license="MIT",
+    author="Richard Kubíček",
+    author_email="kubicekr@eledio.com",
+    install_requires=["requests", "python-dotenv"],
 )

superfaktura/bank_account.py

@@ -15,20 +15,16 @@ Functions:
     - (none)
 
 Usage:
-    import superfaktura.bank_account
-
-    # Create an instance of BankAccount
-    bank = superfaktura.bank_account.BankAccount()
-
-    # Retrieve a list of bank accounts
-    accounts = bank.list()
-
-    # Get the default bank account
-    default_account = bank.default()
-
-    # Create or update a bank account
-    data = {"account": "1234567890", "bank_code": "1234567890", "default": True}
-    bank.post(data)
+    >>> import superfaktura.bank_account
+    >>> # Create an instance of BankAccount
+    >>> bank = superfaktura.bank_account.BankAccount()
+    >>> # Retrieve a list of bank accounts
+    >>> accounts = bank.list()
+    >>> # Get the default bank account
+    >>> default_account = bank.default()
+    >>> # Create or update a bank account
+    >>> data = {"account": "1234567890", "bank_code": "1234567890", "default": True}
+    >>> bank.post(data)
 """
 
 from dataclasses import dataclass, asdict
@@ -83,11 +79,11 @@ class BankAccount(SuperFakturaAPI):
         - post: Creates or updates a bank account.
 
     Usage:
-        bank = BankAccount()
-        accounts = bank.list()
-        default_account = bank.default()
-        data = {"account": "1234567890", "bank_code": "1234567890", "default": True}
-        bank.post(data)
+        >>> bank = BankAccount()
+        >>> accounts = bank.list()
+        >>> default_account = bank.default()
+        >>> data = {"account": "1234567890", "bank_code": "1234567890", "default": True}
+        >>> bank.post(data)
     """
 
     def __init__(self):

superfaktura/enumerations/language.py

@@ -0,0 +1,54 @@
+"""
+Language Enumeration.
+
+This module provides an enumeration of languages that can be used in the SuperFaktura API.
+
+Classes:
+    - Language: Enumeration of languages.
+
+Usage:
+    from superfaktura.enumerations.language import Language
+    language = Language.Czech
+"""
+
+
+class Language:
+    """
+    Language Enumeration.
+
+    This enumeration represents the different languages that can be used in the SuperFaktura API.
+
+    Values:
+        - Czech: Czech
+        - German: German
+        - English: English
+        - Croatian: Croatian
+        - Hungarian: Hungarian
+        - Italian: Italian
+        - Dutch: Dutch
+        - Polish: Polish
+        - Romanian: Romanian
+        - Russian: Russian
+        - Slovak: Slovak
+        - Slovene: Slovene
+        - Spanish: Spanish
+        - Ukrainian: Ukrainian
+
+    Usage:
+        language = Language.Czech
+    """
+
+    Czech = "cze"
+    German = "deu"
+    English = "eng"
+    Croatian = "hrv"
+    Hungarian = "hun"
+    Italian = "ita"
+    Dutch = "nld"
+    Polish = "pol"
+    Romanian = "rom"
+    Russian = "rus"
+    Slovak = "slo"
+    Slovene = "slv"
+    Spanish = "spa"
+    Ukrainian = "ukr"

superfaktura/invoice.py

@@ -16,49 +16,45 @@ Functions:
     - (none)
 
 Usage:
-    import superfaktura.invoice
-
-    # Create an instance of Invoice
-    invoice = superfaktura.invoice.Invoice()
-
-    # Create an invoice
-    invoice.add(
-        invoice=superfaktura.invoice.InvoiceModel(
-            type=superfaktura.invoice.InvoiceType.PROFORMA,
-            name="Invoice 3",
-            due=superfaktura.invoice.Date("2025-02-01"),
-            invoice_currency=superfaktura.invoice.Currencies.CZK,
+    >>> import superfaktura.invoice
+    >>> # Create an instance of Invoice
+    >>> invoice = superfaktura.invoice.Invoice()
+    >>> # Create an invoice
+    >>> invoice.add(
+        invoice_model=InvoiceModel(
+            type=InvoiceType.INVOICE,
+            name="My First Invoice",
+            due=Date("2025-04-01"),
+            invoice_currency=Currencies.EUR,
             header_comment="We invoice you for services",
             bank_accounts=[bank.default().as_dict()],
         ),
         items=[
-            superfaktura.invoice.InvoiceItem(name="Services", unit_price=100, quantity=1,
-                                            unit="ks", tax=21),
-            superfaktura.invoice.InvoiceItem(name="SIM card", unit_price=50, quantity=1,
-                                            tax=21, unit="ks"),
-            superfaktura.invoice.InvoiceItem(
-                name="SIM card 2", unit_price=75, quantity=1, tax=21, unit="ks"
+            InvoiceItem(
+                name="Website Development", unit_price=1000.0, quantity=1, tax=20
+            ),
+            InvoiceItem(
+                name="Hosting Service (1 year)", unit_price=500.0, quantity=1, tax=20
             ),
         ],
-        contact=superfaktura.client_contacts.ClientContactModel(
-            name="Richard Kubíček",
-            email="kubicekr@eledio.com",
-            phone="+420 123 456 789",
-            address="Jaroslava Foglara 861/1",
-            ico="123",
+        contact=ClientContactModel(
+            name="John Doe",
+            email="john.doe@examle.com",
+            phone="+1 555-1234",
+            address="123 Main Street, New York",
+            ico="987654321",
             update=True,
-            country_id=57,
+            country_id=225,
         ),
     )
 """
 
 from dataclasses import dataclass, asdict
-from typing import Optional, List
+from typing import Optional, List, IO
 import json
 
-from superfaktura.bank_account import BankAccount
 from superfaktura.client_contacts import ClientContactModel
-from superfaktura.enumerations.currency import Currencies
+from superfaktura.enumerations.language import Language
 from superfaktura.superfaktura_api import SuperFakturaAPI
 from superfaktura.utils.data_types import Date, DateEncoder
 
@@ -147,8 +143,51 @@ class InvoiceItem:
         return data
 
 
+@dataclass
+class InvoiceRespModel:
+    """
+    This dataclass represents the response model for an invoice in the SuperFaktura API.
+
+    Attributes:
+        - error (int): The error code.
+        - error_message (str): The error message.
+        - invoice_id (Optional[int]): The ID of the invoice.
+        - invoice_token (Optional[str]): The token of the invoice.
+    """
+
+    error: int
+    error_message: str
+    invoice_id: Optional[int] = None
+    invoice_token: Optional[str] = None
+
+
+@dataclass
+class InvoiceSettings:
+    """
+    This dataclass represents the settings for an invoice in the SuperFaktura API.
+    """
+
+    language: Optional[str] = None
+    bysquare: Optional[bool] = None
+    callback_payment: Optional[str] = None
+    online_payment: Optional[bool] = None
+    payment_info: Optional[bool] = None
+    paypal: Optional[bool] = None
+    show_prices: Optional[bool] = None
+    signature: Optional[bool] = None
+    summary_bg_color: Optional[str] = None
+
+    def as_dict(self) -> dict:
+        """Returns a dictionary representation of the InvoiceSettings."""
+        data = asdict(self)
+        for key in list(data.keys()):
+            if data[key] is None:
+                del data[key]
+        return data
+
+
 class InvoiceType:
-    """ "
+    """
     Invoice Type Enumeration.
 
     This enumeration represents the different types of invoices that can be created.
@@ -175,31 +214,32 @@ class Invoice(SuperFakturaAPI):
         - update: Updates an existing invoice.
 
     Usage:
-        invoice = Invoice()
-        invoice.add(
-            invoice=InvoiceModel(
-                type=InvoiceType.PROFORMA,
-                name="Invoice 3",
-                due=Date("2025-02-01"),
-                invoice_currency=Currencies.CZK,
+        >>> invoice = Invoice()
+        >>> invoice.add(
+            invoice_model=InvoiceModel(
+                type=InvoiceType.INVOICE,
+                name="My First Invoice",
+                due=Date("2025-04-01"),
+                invoice_currency=Currencies.EUR,
                 header_comment="We invoice you for services",
                 bank_accounts=[bank.default().as_dict()],
             ),
             items=[
-                InvoiceItem(name="Services", unit_price=100, quantity=1, unit="ks", tax=21),
-                InvoiceItem(name="SIM card", unit_price=50, quantity=1, tax=21, unit="ks"),
                 InvoiceItem(
-                    name="SIM card 2", unit_price=75, quantity=1, tax=21, unit="ks"
+                    name="Website Development", unit_price=1000.0, quantity=1, tax=20
+                ),
+                InvoiceItem(
+                    name="Hosting Service (1 year)", unit_price=500.0, quantity=1, tax=20
                 ),
             ],
             contact=ClientContactModel(
-                name="Richard Kubíček",
-                email="kubicekr@eledio.com",
-                phone="+420 123 456 789",
-                address="Jaroslava Foglara 861/1",
-                ico="123",
+                name="John Doe",
+                email="john.doe@example.com",
+                phone="+1 555-1234",
+                address="123 Main Street, New York",
+                ico="987654321",
                 update=True,
-                country_id=57,
+                country_id=225,
             ),
         )
     """
@@ -212,44 +252,53 @@ class Invoice(SuperFakturaAPI):
         invoice_model: InvoiceModel,
         items: List[InvoiceItem],
         contact: ClientContactModel,
-    ):
-        """Creates a new invoice."""
+        invoice_settings: Optional[InvoiceSettings] = None,
+    ) -> InvoiceRespModel:
+        """
+        Adds a new invoice.
+
+        Args:
+            invoice_model (InvoiceModel): The invoice model.
+            items (List[InvoiceItem]): List of invoice items.
+            contact (ClientContactModel): The client contact model.
+            invoice_settings (Optional[InvoiceSettings]): The invoice settings.
+
+        Returns:
+            InvoiceRespModel: The response model for the invoice.
+        """
         data = {
             "Invoice": invoice_model.as_dict(),
             "InvoiceItem": [item.as_dict() for item in items],
             "Client": contact.as_dict(),
+            "InvoiceSetting": invoice_settings.as_dict() if invoice_settings else {},
         }
         url = "invoices/create"
         resp = self.post(endpoint=url, data=json.dumps(data, cls=DateEncoder))
-        return resp
+        invoice_resp = InvoiceRespModel(
+            error=resp["error"], error_message=resp["error_message"]
+        )
+        if "data" in resp:
+            if "Invoice" in resp["data"]:
+                invoice_resp.invoice_id = int(resp["data"]["Invoice"]["id"])
+                invoice_resp.invoice_token = resp["data"]["Invoice"]["token"]
+        return invoice_resp
 
+    def get_pdf(
+        self,
+        invoice: InvoiceRespModel,
+        descriptor: IO[bytes],
+        language: str = Language.Czech,
+    ) -> None:
+        """
+        Retrieves the PDF of the invoice.
 
-if __name__ == "__main__":
-    invoice = Invoice()
-    bank = BankAccount()
-    invoice.add(
-        invoice_model=InvoiceModel(
-            type=InvoiceType.PROFORMA,
-            name="Invoice 3",
-            due=Date("2025-02-01"),
-            invoice_currency=Currencies.CZK,
-            header_comment="We invoice you for services",
-            bank_accounts=[bank.default().as_dict()],
-        ),
-        items=[
-            InvoiceItem(name="Services", unit_price=100, quantity=1, unit="ks", tax=21),
-            InvoiceItem(name="SIM card", unit_price=50, quantity=1, tax=21, unit="ks"),
-            InvoiceItem(
-                name="SIM card 2", unit_price=75, quantity=1, tax=21, unit="ks"
-            ),
-        ],
-        contact=ClientContactModel(
-            name="Richard Kubíček",
-            email="kubicekr@eledio.com",
-            phone="+420 123 456 789",
-            address="Jaroslava Foglara 861/1",
-            ico="123",
-            update=True,
-            country_id=57,
-        ),
-    )
+        Args:
+            invoice (InvoiceRespModel): The response model for the invoice.
+            descriptor (IO[bytes]): The descriptor to write the PDF data to.
+            language (str): The language for the PDF.
+
+        Returns:
+            None
+        """
+        url = f"{language}/invoices/pdf/{invoice.invoice_id}/token:{invoice.invoice_token}"
+        self.download(url, descriptor)

superfaktura/superfaktura_api.py

@@ -14,20 +14,17 @@ Functions:
     - post: Creates or updates data in the SuperFaktura API.
 
 Usage:
-    import superfaktura.superfaktura_api
-
-    # Create an instance of SuperFakturaAPI
-    api = superfaktura.superfaktura_api.SuperFakturaAPI()
-
-    # Retrieve data from the SuperFaktura API
-    data = api.get('endpoint')
-
-    # Create or update data in the SuperFaktura API
-    api.post('endpoint', data)
+    >>> import superfaktura.superfaktura_api
+    >>> # Create an instance of SuperFakturaAPI
+    >>> api = superfaktura.superfaktura_api.SuperFakturaAPI()
+    >>> # Retrieve data from the SuperFaktura API
+    >>> incoming_data = api.get('endpoint')
+    >>> # Create or update data in the SuperFaktura API
+    >>> api.post('endpoint', outgoing_data)
 """
 
 import os
-from typing import Dict
+from typing import Dict, IO
 
 import requests
 from dotenv import load_dotenv  # type: ignore
@@ -90,11 +87,56 @@ class SuperFakturaAPI:
         url = f"{self._api_url}/{endpoint}"
         req = requests.get(url=url, headers=self._auth_header, timeout=timeout)
         if req.status_code == 200:
-            return req.json()
+            try:
+                return req.json()
+            except requests.exceptions.JSONDecodeError as e:
+                raise SuperFakturaAPIException(
+                    f"Unable to decode response as JSON; {req.content!r}; {e}"
+                ) from e
         raise SuperFakturaAPIException(
-            f"Get status code: {req.status_code}; {req.json()}"
+            f"Get status code: {req.status_code}; {req.content!r}"
         )
 
+    def download(self, endpoint: str, descriptor: IO[bytes], timeout: int = 5) -> None:
+        """
+        Download data stream from the SuperFaktura API.
+
+        Download data stream from the specified endpoint in the SuperFaktura API.
+
+        Args:
+            endpoint (str): The API endpoint to retrieve data from (e.g. 'invoices', 'clients',
+                            etc.).
+            descriptor (IO[bytes]): The descriptor to write the data stream to.
+            timeout (int, optional): The timeout for the API request in seconds. Defaults to 5.
+
+        Returns:
+            None
+
+        Raises:
+            SuperFakturaAPIException: If the API request fails or returns an error.
+
+        Examples:
+            >>> api = SuperFakturaAPI()
+            >>> with open("data.pdf", "wb") as f:
+            >>>     api.download("some/endpoint", descriptor=f)
+
+        Notes:
+            The available endpoints can be found in the SuperFaktura API documentation.
+        """
+        url = f"{self._api_url}/{endpoint}"
+        req = requests.get(url=url, headers=self._auth_header, timeout=timeout)
+        if req.status_code == 200:
+            if descriptor.writable():
+                descriptor.write(req.content)
+            else:
+                raise SuperFakturaAPIException(
+                    f"Descriptor {descriptor} is not writable"
+                )
+        else:
+            raise SuperFakturaAPIException(
+                f"Download status code: {req.status_code}; {req.content!r}"
+            )
+
     def post(self, endpoint: str, data: str, timeout: int = 5) -> Dict:
         """
         Creates or updates data in the SuperFaktura API.