Add support for configuring site url when not using GitHub Pages.

Signed-off-by: tison <[email protected]>

README.md

@@ -43,9 +43,11 @@ You will need to create the following secret. Use the credentials generated in t
 |--------------|------------------------------------------------------|
 |zuliprc       | The file content of the zuliprc obtained from step 2 |
 
-### Step 4 - Enable GitHub Pages
+### Step 4 - Enable GitHub Pages or set up base URL
 
-Go to `https://github.com/<username>/<repo-name>/settings/pages`, select `main` (or a branch of your choosing), and `/` as the folder. Save the changes.
+Go to `https://github.com/<username>/<repo-name>/settings/pages`, select `main` (or a branch of your choosing), and `/` as the folder. Save the changes. The base URL of the generated site will be resolved to GitHub Pages, i.e., `https://<username>.github.io/<repo-name>` or the configured custom domain name.
+
+Alternatively, you can configure the `base_url` option to populate the base URL. This option could be useful in situation when you are not using GitHub Pages.
 
 ### Step 5 - Configure the streams you want to index
 
@@ -137,6 +139,7 @@ warned that the repository size may explode.
 
 Finally, verify that everything is working as expected. You can track the status of the action by visiting `https://github.com/<github-username>/<repo-name>/actions`. Once the initial run is completed, you should be able to visit the archive by opening the link provided at the end of the action run log. The link will generally be of the form `<github-username>.github.io/<repo-name>`, or `<your-personal-domain>/<repo-name>` if you have configured your own personal domain to point to GitHub pages.
 
+If you configure `base_url` option, you can track the status of the action by visiting the URL instead.
 
 ## Running zulip-archive without GitHub actions
 

action.yml

@@ -30,6 +30,9 @@ inputs:
   zuliprc:
     description: 'zuliprc of the Zulip bot'
     required: true
+  site_url:
+    description: 'Base URL for the site. If not configured, this action will try to resolve the base URL as GH pages.'
+    required: false
 runs:
   using: 'docker'
   image: 'Dockerfile'

entrypoint.sh

@@ -9,6 +9,7 @@ delete_history=$5
 archive_branch=$6
 github_personal_access_token=$7
 zuliprc=$INPUT_ZULIPRC
+site_url=$INPUT_SITE_URL
 
 github_personal_access_token=${github_personal_access_token:-NOT_SET}
 
@@ -48,17 +49,22 @@ pip3 install -r requirements.txt
 # crudini is not available as an Alpine pkg, so we install via pip.
 pip3 install crudini
 
-# Uses GitHub pages API
-# https://docs.github.com/en/rest/pages
-auth_header="Authorization: Bearer ${github_token}"
-accept_header="Accept: application/vnd.github+json"
-version_header="X-GitHub-Api-Version: 2022-11-28"
-page_api_url="https://api.github.com/repos/${GITHUB_REPOSITORY}/pages"
-
-print_site_url_code="import sys, json; print(json.load(sys.stdin)['html_url'])"
-# Get the GitHub pages URL
-github_pages_url_with_trailing_slash=$(curl -L -H "$accept_header" -H "$auth_header" -H "$version_header" "$page_api_url" | python3 -c "${print_site_url_code}")
-github_pages_url=${github_pages_url_with_trailing_slash%/}
+if [ -z "$site_url" ]; then
+    echo "Setting up site URL from GitHub pages API"
+    # Uses GitHub pages API
+    # https://docs.github.com/en/rest/pages
+    auth_header="Authorization: Bearer ${github_token}"
+    accept_header="Accept: application/vnd.github+json"
+    version_header="X-GitHub-Api-Version: 2022-11-28"
+    page_api_url="https://api.github.com/repos/${GITHUB_REPOSITORY}/pages"
+
+    print_site_url_code="import sys, json; print(json.load(sys.stdin)['html_url'])"
+    # Get the GitHub pages URL
+    github_pages_url_with_trailing_slash=$(curl -L -H "$accept_header" -H "$auth_header" -H "$version_header" "$page_api_url" | python3 -c "${print_site_url_code}")
+    site_url=${github_pages_url_with_trailing_slash%/}
+else
+    site_url=${site_url%/}
+fi
 
 cp default_settings.py settings.py
 cp $streams_config_file_path .
@@ -74,11 +80,11 @@ else
 fi
 
 export PROD_ARCHIVE=true
-export SITE_URL=$github_pages_url
+export SITE_URL=$site_url
 export HTML_DIRECTORY=$html_dir_path
 export JSON_DIRECTORY=$json_dir_path
 export HTML_ROOT=""
-export ZULIP_ICON_URL="${github_pages_url}/assets/img/zulip.svg"
+export ZULIP_ICON_URL="${site_url}/assets/img/zulip.svg"
 
 if [ ! -d $json_dir_path ]; then
     mkdir -p $json_dir_path