[ADD] product_images: add a tutorial

This will help users to get automatically images for their products.

task-2558054

Author: chevalierv

content/applications/sales/sales/products_prices/products.rst

@@ -9,3 +9,4 @@ Manage your products
 
    products/import
    products/variants
+   products/product_images

content/applications/sales/sales/products_prices/products/product_images.rst

@@ -0,0 +1,131 @@
+===================================================
+Automatically get product images with Google Images
+===================================================
+
+The product images are very useful in Odoo, for example, to quickly find a product or check if you 
+scanned the right one, but it can be a bit painful to set up especially if you have a lot of 
+products. **Google Custom Search** allows finding images automatically for your product, based on 
+their barcode, keeping your focus on what matters in your business.
+
+.. _product_images/configuration:
+
+Configuration
+=============
+
+This functionnality requires configuration both on Google and on Odoo.
+
+With a free Google account, you can get up to 100 free images per day. If you need a higher rate, 
+you'll have to upgrade to a billing account.
+
+.. _product_images/google-api-dashboard:
+
+Google API dashboard
+--------------------
+
+#. Go to the `Google Cloud Platform API & Services <https://console.developers.google.com/>`_ page
+   to generate Google Custom Search API credentials. Log in with your Google account.
+
+#. Select or create an API project to store the credentials. Give it an explicit name 
+   (e.g. Odoo Images).
+
+#. In the credentials section, click on **Create Credentials** and select **API Keys**.
+
+   .. image:: product_images/gcp-api-services.png
+      :align: center
+      :alt: API & Services page on Google Cloud Platform
+
+#. Save your **API Key**. You'll need it for the next step in Odoo!
+
+#. Use the search bar to look for **Google Custom Search API** and select it.
+
+   .. image:: product_images/gcp-search.png
+      :align: center
+      :alt: Search bar containing "Custom Search API" on Google Cloud Platform
+
+#. Enable the API.
+
+   .. image:: product_images/gcp-custom-search-api.png
+      :align: center
+      :alt: "Custom Search API" tile with Enable button highlighted on Google Cloud Platform
+
+.. _product_images/google-pse-dashboard:
+
+Google Programmable Search dashboard
+------------------------------------
+
+#. Go to `Google Programmable Search Engine <https://programmablesearchengine.google.com/>`_ and
+   click on **Get Started**. Log in with your Google account.
+
+   .. image:: product_images/google-pse.png
+      :align: center
+      :alt: Google Programmable Search Engine page with the **Get Started** button on the up-right
+            of the page
+
+#. Fill the language and the name of the search engine. Give it an explicit name
+   (e.g. Odoo Images).
+
+   .. note::
+      Google doesn't allow to create a search engine without having entered at least one specific
+      site to search on. You can put any website (e.g. www.google.com) for this step, we will
+      remove it later.
+
+#. Validate the form by clicking on **Create**. Then, go to the edition mode of the search engine
+   that you created (either by clicking on **Control Panel** on the confirmation page or by
+   clicking on the name of your Search Engine on the Home page).
+
+#. In the **basics** tab, make sure to enable **Image search**, **SafeSearch** and 
+   **Search the entire web**.
+
+   .. note::
+      Once **Search the entire web** is enabled, you can safely delete the site that you put at the 
+      previous step.
+
+#. Save your **Search Engine Id**. You’ll need it for the next step in Odoo!
+
+.. _product_images/setup-in-odoo:
+
+Odoo
+----
+
+#. Go to :menuselection:`Settings --> General Settings --> Integrations`,
+   activate **Google Images** and save.
+
+#. Go back to :menuselection:`Settings --> General Settings--> Integrations`, enter your **API Key**
+   and **Search Engine ID** in **Google Images** settings and save again.
+
+.. _product_images/get-product-images:
+
+Automatically get your product images in Odoo
+=============================================
+
+The action to automatically get your product images in Odoo appears in any Products or Product
+Variants list view. Here is a step-by-step guide from the Inventory app.
+
+#. Go to the Products menu (:menuselection:`Products --> Products` or :menuselection:`Products --> 
+   Product Variants`) from any application that uses products like Inventory or Sales.
+
+#. On the list view, select the products that needs an image.
+
+   .. important::
+      Only the 10,000 first selected products or product variants will be processed.
+
+   .. note::
+      - Only the products or product variants with a barcode and without an image will be processed.
+      - If you select a product that has one or more variants from the Products view, each variant
+        matching the previous criteria will be processed.
+
+#. In the action menu, select **Get Pictures from Google Images** and validate by clicking on 
+   **Get picture**.
+
+#. You should see your images appearing incrementally.
+
+   .. note::
+      - Only the 10 first images are fetched immediatly. If you selected more than 10, the rest will
+        be fetched as a background job.
+      - The background job process about 100 images in a minute. If you reach the quota authorized
+        by Google (either with a free or a paid plan), the background job will put itself on hold
+        for 24 hours and continue where it stopped the day before. 
+
+.. seealso::
+   - `Create, modify, or close your Google Cloud Billing account
+     <https://cloud.google.com/billing/docs/how-to/manage-billing-account>`_

content/applications/sales/sales/products_prices/products/product_images/gcp-api-services.png

@@ -284,6 +284,8 @@ purchase/replenishment/multicompany/setup.rst applications/general/multi_compani
 
 # Redirections introduced in 15.0 :
 
+applications/general/product_images.rst applications/sales/sales/products_prices/products/product_images.rst  # fix a wrong target hard-coded in Odoo
+
 sales/crm/optimize/outlook_extension.rst productivity/mail_plugins/outlook.rst
 
 developer/reference/addons.rst                                   developer/reference/backend.rst