chore: Move sharing_sites into video_configuration app

- https://github.com/openedx/edx-platform/issues/37456

openedx/core/djangoapps/video_config/sharing_sites.py

@@ -0,0 +1,115 @@
+"""
+Defines the sharing sites for different social media platforms
+"""
+from collections import namedtuple
+from django.conf import settings
+from django.utils.translation import gettext_lazy as _
+from urllib.parse import urlencode
+
+SharingSiteConfig = namedtuple(
+    'SharingSiteConfig',
+    [
+        'name',
+        'fa_icon_name',
+        'url_param_name',
+        'base_share_url',
+        'additional_site_params'
+    ],
+    defaults=[{}]
+)
+
+TWITTER = SharingSiteConfig(
+    name='twitter',
+    fa_icon_name='fa-twitter-square',
+    url_param_name='url',
+    base_share_url='https://twitter.com/intent/tweet',
+)
+
+FACEBOOK = SharingSiteConfig(
+    name='facebook',
+    fa_icon_name='fa-facebook-square',
+    url_param_name='u',
+    base_share_url='https://www.facebook.com/sharer/sharer.php'
+)
+
+LINKEDIN = SharingSiteConfig(
+    name='linkedin',
+    fa_icon_name='fa-linkedin-square',
+    url_param_name='url',
+    base_share_url='https://www.linkedin.com/sharing/share-offsite/'
+)
+
+ALL_SHARING_SITES = [
+    TWITTER,
+    FACEBOOK,
+    LINKEDIN,
+]
+
+
+def sharing_sites_info_for_video(video_public_url, organization=None):
+    """
+    Returns a list of dicts, each containing the name, fa_icon_name, and sharing_url
+    """
+    result = []
+    for sharing_site_config in ALL_SHARING_SITES:
+        sharing_site_info = {
+            'name': sharing_site_config.name,
+            'fa_icon_name': sharing_site_config.fa_icon_name,
+            'sharing_url': sharing_url(
+                video_public_url,
+                sharing_site_config,
+                organization=organization
+            ),
+        }
+        result.append(sharing_site_info)
+    return result
+
+
+def get_share_text(social_account_handle, organization_name):
+    """
+    Generate the text we will pre-populate when sharing a post to social media.
+
+    NOTE: Most of the time, we will have all info of these, but have provided
+    reasonable fallbacks in case some are missing.
+    """
+    if social_account_handle and organization_name:
+        return _(
+            "Here's a fun clip from a class I'm taking on {social_account_handle} from {organization_name}.\n\n"
+        ).format(
+            social_account_handle=social_account_handle,
+            organization_name=organization_name,
+        )
+    elif social_account_handle:
+        return _(
+            "Here's a fun clip from a class I'm taking on {social_account_handle}.\n\n"
+        ).format(social_account_handle=social_account_handle)
+    elif organization_name:
+        return _(
+            "Here's a fun clip from a class I'm taking from {organization_name}.\n\n"
+        ).format(organization_name=organization_name)
+    else:
+        return _(
+            "Here's a fun clip from a class I'm taking on {platform_name}.\n\n"
+        ).format(platform_name=settings.PLATFORM_NAME)
+
+
+def sharing_url(video_public_url, sharing_site_config, organization=None):
+    """
+    Returns the sharing url with the appropriate parameters
+    """
+    share_params = {
+        'utm_source': sharing_site_config.name,
+        'utm_medium': 'social',
+        'utm_campaign': 'social-share-exp',
+        sharing_site_config.url_param_name: video_public_url
+    }
+
+    # Special handling for Twitter, pre-populate share text
+    if sharing_site_config.name == "twitter":
+        twitter_handle = settings.PLATFORM_TWITTER_ACCOUNT
+        org_name = organization['name'] if organization else None
+        share_params.update({"text": get_share_text(twitter_handle, org_name)})
+    else:
+        share_params.update(sharing_site_config.additional_site_params)
+
+    return sharing_site_config.base_share_url + '?' + urlencode(share_params)