docs(docs): Update the docs and requirements base on newest changes

docs/source/getting_started/admin.rst

@@ -6,7 +6,7 @@ The admin layer customizes the Django admin interface to manage invoices efficie
 Managing Invoices
 -----------------
 
-In the Django admin interface, you can manage various aspects of invoices, including creating, editing, and deleting them.
+In the Django admin interface, you can manage various aspects of invoices, including creating, editing, deleting, and downloading them as PDFs.
 
 Viewing Invoices
 ----------------
@@ -38,7 +38,6 @@ To create a new invoice:
 
 4. Select design elements like logo, background, signature, and stamp.
 
-
 5. Choose a template for the invoice. The system comes with three pre-defined templates, but you can create your own custom templates as well.
 
 .. image:: ../../_static/4.png
@@ -47,7 +46,7 @@ To create a new invoice:
 6. After saving the invoice, you can add custom columns to include additional details like delivery date or warranty period.
 
 .. image:: ../../_static/5.png
-   :alt: Adding a custom columns
+   :alt: Adding a Custom Column
 
 .. note::
    Custom columns can only be added after the invoice has been created.
@@ -68,22 +67,28 @@ To show the details of an existing invoice:
 
 .. image:: ../../_static/7.png
    :alt: Showing the Selected Invoice
-   
+
 .. image:: ../../_static/8.png
    :alt: Print the Selected Invoice
 
 Exporting Invoices
 ------------------
 
-The Django admin interface also allows you to export invoices as HTML files bundled in a ZIP archive.
+The Django admin interface allows you to export invoices as HTML files bundled in a ZIP archive, or as PDFs.
+
+Downloading Selected Invoices as PDF
+------------------------------------
 
 1. Select one or more invoices from the list.
-2. Choose the `Download selected report as ZIP file` action from the dropdown menu.
+2. Choose the `Download selected invoices as PDF` action from the dropdown menu.
 
 .. image:: ../../_static/9.png
-   :alt: Exporting Invoices
+   :alt: Exporting Invoices as PDF
 
-3. The ZIP file will include the invoice(s) and any associated static files like logos or signatures.
+3. The system will generate the selected invoices in PDF format and download them to your local machine.
 
 .. image:: ../../_static/10.png
-   :alt: Downloaded ZIP File
+   :alt: Exporting Invoices as ZIP
+
+.. note::
+   If you select more than file it will convert the pdf to zip

docs/source/getting_started/models.rst

@@ -11,72 +11,63 @@ The `Invoice` model represents an invoice in the system, capturing essential det
 Fields
 ^^^^^^
 
-- `invoice_date`: The date when the invoice was created.
-- `customer_name`: The name of the customer.
-- `customer_email`: The email of the customer.
-- `status`: The current status of the invoice (e.g., Paid, Unpaid).
-- `notes`: Additional notes regarding the invoice.
-- `category`: The category associated with this invoice.
-- `due_date`: The date by which the invoice should be paid.
-- `logo`: The logo displayed on the invoice.
-- `signature`: The signature image for the invoice.
-- `stamp`: The stamp image for the invoice.
-- `template_choice`: The template used for rendering the invoice.
-
-InvoiceCategory
----------------
-
-The `InvoiceCategory` model represents categories that can be associated with invoices, helping to organize and classify them.
-
-Fields
-^^^^^^
-
-- `title`: The title of the category.
-- `description`: A description of the category.
-
-InvoiceItem
+- **invoice_date**: The date when the invoice was created.
+- **customer_name**: The name of the customer.
+- **customer_email**: The email of the customer.
+- **status**: The current status of the invoice (e.g., Paid, Unpaid).
+- **notes**: Additional notes regarding the invoice.
+- **category**: JSONField that allows storing various categories in a dynamic format, such as Terms & Conditions or additional notes.
+- **due_date**: The date by which the invoice should be paid.
+- **logo**: An image field representing the company logo on the invoice.
+- **signature**: The signature image for the invoice.
+- **stamp**: The stamp image for the invoice.
+- **tracking_code**: Enter the first 3-4 characters of the tracking code. The full code will be auto-generated as <prefix> + <date> + <random number>.
+- **template_choice**: Specifies the template used for rendering the invoice.
+- **contacts**: JSONField that stores the contact details (e.g., email, phone number) of the customer in a flexible format.
+
+Item
 -----------
 
-The `InvoiceItem` model represents individual items within an invoice, detailing the products or services provided.
+The `Item` model represents individual items within an invoice, detailing the products or services provided.
 
 Fields
 ^^^^^^
 
-- `description`: Description of the item.
-- `quantity`: The quantity of the item.
-- `unit_price`: The price per unit of the item.
-- `total_price`: The total price for this item (calculated as quantity * unit price).
-- `invoice`: The invoice associated with this item.
+- **description**: Description of the item.
+- **quantity**: The quantity of the item.
+- **unit_price**: The price per unit of the item.
+- **total_price**: The total price for this item (calculated as quantity * unit price).
+- **invoice**: A ForeignKey linking the item to its associated invoice.
 
-InvoiceColumn
+Column
 -------------
 
-The `InvoiceColumn` model represents custom columns that can be added to individual items in an invoice.
+The `Column` model represents custom columns that can be added to individual items in an invoice.
 
 Fields
 ^^^^^^
 
-- `priority`: The priority associated with each custom column.
-- `column_name`: The name of the custom column (e.g., 'Delivery Date', 'Warranty Period').
-- `value`: The value for the custom column in the specific invoice.
-- `invoice`: The invoice associated with this custom column.
-- `item`: The item associated with this custom column.
+- **priority**: The display priority for this column.
+- **column_name**: The name of the custom column (e.g., 'Delivery Date', 'Warranty Period').
+- **value**: The value for the custom column in the specific invoice.
+- **invoice**: The invoice associated with this custom column.
+- **item**: The item associated with this custom column.
 
 Expense
-------------
+-------
 
-The `Expense` model represents the total amount for an invoice, including calculations for tax, discounts, and the final total.
+The `Expense` model represents calculations for subtotals, taxes, discounts, and totals for an invoice.
 
 Fields
 ^^^^^^
 
-- `subtotal`: The sum of all item totals.
-- `tax_percentage`: The tax percentage applied to the invoice.
-- `discount_percentage`: The discount percentage applied to the invoice.
-- `tax_amount`: The calculated tax amount.
-- `discount_amount`: The calculated discount amount.
-- `total_amount`: The final total after applying tax and discount.
-- `invoice`: The invoice associated with this total.
+- **subtotal**: The sum of all item totals.
+- **tax_percentage**: The tax percentage applied to the invoice.
+- **tax_amount**: The calculated tax amount.
+- **discount_percentage**: The discount percentage applied to the invoice.
+- **discount_amount**: The calculated discount amount.
+- **total_amount**: The final total after applying tax and discount.
+- **invoice**: A ForeignKey linking the expense to its associated invoice.
 
 Admin Integration
 -----------------
@@ -86,32 +77,21 @@ To integrate these models into the Django admin interface, register them in the
 .. code-block:: python
 
     from django.contrib import admin
-    from sage_invoice.models import (
-        Invoice,
-        InvoiceCategory,
-        InvoiceItem,
-        InvoiceColumn,
-        Expense,
-    )
+    from sage_invoice.models import Invoice, Item, Column, Expense
 
 
     @admin.register(Invoice)
     class InvoiceAdmin(admin.ModelAdmin):
         list_display = ["title", "invoice_date", "customer_name", "status"]
 
 
-    @admin.register(InvoiceCategory)
-    class InvoiceCategoryAdmin(admin.ModelAdmin):
-        list_display = ["title", "description"]
-
-
-    @admin.register(InvoiceItem)
-    class InvoiceItemAdmin(admin.ModelAdmin):
+    @admin.register(Item)
+    class ItemAdmin(admin.ModelAdmin):
         list_display = ["description", "quantity", "unit_price", "total_price"]
 
 
-    @admin.register(InvoiceColumn)
-    class InvoiceColumnAdmin(admin.ModelAdmin):
+    @admin.register(Column)
+    class ColumnAdmin(admin.ModelAdmin):
         list_display = ["column_name", "priority", "value"]