Hi Lukas,

Using Milestone 2.5.2 to track the draft pull request progress (Targeting April 11, 2022).

2.5.2

• Add Add Shortcodes for Maintenance Mode and User Status john-lang-86/lj-maintenance-mode#15 shortcodes for dynamic page content. (Thanks to @john-lang-86)
  1. Add [ljmm_is_maintenance_mode_enabled] Show this content only when maintenance mode is enabled [/ljmm_is_maintenance_mode_enabled] shortcode.
  2. Add [ljmm_is_maintenance_mode_disabled] Show this content only when maintenance mode is disabled [/ljmm_is_maintenance_mode_disabled] shortcode.
  3. Add [ljmm_is_user_logged_in] Show this content only when the user is logged in to the website [/ljmm_is_user_logged_in] shortcode.
  4. Add [ljmm_is_user_logged_out] Show this content only when the user is logged out of the website, they are a public user [/ljmm_is_user_logged_out] shortcode.
• Add Add New Language Translations 2.5.2 john-lang-86/lj-maintenance-mode#6 to expand the supported languages. (Thanks to @john-lang-86)
  1. Updated source code to be primarily human native language, removing the technology aspects (like %s) from the translatable phrases. This technique significantly improved the online translation success; while intentionally leaving 1 %s in the translation string list as a 'canary in the coal mine' test to see how well the translator handled it.
  2. Using 'PoEdit Pro' application and the DeepL/Google online ML translators. Keeping languages that had a > 98% online translation success, as anything less would be a disappointing user expectation and experience.
  3. As-at 28 Mar 2022, 145 locales (language_region combinations) have been translated. The full journey from RTFM to commit has been documented.
     • Focus on WordPress installation statistics, in descending ranked order; then
     • Focus on WordPress up-to-date translations, which indicates an active community.
     • Focus on Stripe Payment Processor supported languages.
• Resolves review feedback about Twenty Twenty-Two theme compatability as part of 'Alternative to get_header hook/action' solution. (Thanks to @john-lang-86)
• Update screenshot-4.png for the new settings page options in 2.5.2, and add screenshot-10.png
• Update README.md and readme.txt files.

2.5.1.1

• Fix Allowed URIs (Contains) - Trailing Slashes john-lang-86/lj-maintenance-mode#1 to improve trailing slash comparisons. (Thanks to @john-lang-86)
• Fix Allow Home ('/') in Options List john-lang-86/lj-maintenance-mode#13 to allow a strict comparison for the site home page. (Thanks to @john-lang-86)
• Improved helpful messages to advanced setting options. (Thanks to @john-lang-86)

2.5.1

• Added Autoptimize message. (Thanks to @john-lang-86)
• Added "maintenance.min.login.css" feature. When detected in theme directory, this CSS file will be loaded in the standard login page to show users that maintenance mode is active. (Thanks to @john-lang-86)
  1. Added filter "ljmm_css_login_filename".
  2. Added filter "ljmm_css_login_url".
• Resolve BackUpBuddy compatibility #37 by adding 6 "Allowed" setting lists; match one on a list and maintenance mode lets the request proceed. (Thanks to @john-lang-86)
  1. Added "Allowed IPs (Contains)" setting, where $_SERVER[REMOTE_ADDR] matching requests will by-pass maintenance mode page.
  2. Added "Allowed URIs (Strict)" setting, where $_SERVER[REQUEST_URI] matching requests will by-pass maintenance mode page.
  3. Added "Allowed URIs (Contains)" setting, where $_SERVER[REQUEST_URI] matching requests will by-pass maintenance mode page.
  4. Added "Allowed Query Strings (Contains)" setting, where $_SERVER[QUERY_STRING] matching requests will by-pass maintenance mode page.
  5. Added "Allowed Referers (Contains)" setting, where $_SERVER[HTTP_REFERER] matching requests will by-pass maintenance mode page.
  6. Added "Allowed User Agents (Contains)" setting, where $_SERVER[HTTP_USER_AGENT] matching requests will by-pass maintenance mode page.
• Resolve Maintenance hook #43 by switching from 'get_header' to 'wp_loaded' hook/action. (Thanks to @john-lang-86)
  1. Always allow '/wp-login.php' URI access requests.
  2. Always allow 'action=enter_recovery_mode&rm_token=' query string access requests.
• Fix Admin is logged in not detected when instalation is in subfolder #44 by always allowing access when "current_user_can('administrator')" check passes. (Thanks to @john-lang-86)
• Resolve 2 suggestions to your awesome plugin! #47 by adding 2 DIVs to maintenance mode page (wrapper and content); for more flexible CSS options. (Thanks to @john-lang-86)
• Add helpful messages to advanced setting options. (Thanks to @john-lang-86)

2.5

• Added WP Rocket message. (Thanks to @john-lang-86)
• Added "maintenance.min.frontend.css" feature. When detected in theme directory, this CSS file will be loaded in the frontend to show logged in users that maintenance mode is active. (Thanks to @john-lang-86)
  1. Added filter "ljmm_css_frontend_filename".
  2. Added filter "ljmm_css_frontend_url".
• Commit contains unit tested (functional) core for 'an exception allow list for non-logged in access to resources' for REMOTE_ADDR, REQUEST_URI (Strict Match), REQUEST_URI (Contains/Sloppy Match) and HTTP_REFERER; but still needs a settings page implementation. (Thanks to @john-lang-86)
• Acknowledgment: Language translations for new strings in the settings page in 2.5 are missing.

Screenshots

Version lifted to be v2.5.2

Added messages for WP Rocket (Cacher) and Autoptimize (Cacher).

Always by-pass maintenance mode page when current_user_can('administrator').

Add 2 extra DIV tags to maintenance mode page.

Add 6 new 'Allowed to by-pass the Maintenance Mode' list settings for specific request conditions.

Now checks for 'frontend' and 'login' CSS files in the theme folder.

Samples used in Unit Testing

• Sample maintenance mode page using maintenance.min.css in theme directory.

  • maintenance.min.css-sample-www-dataprofessionals-com-au-(2022-01-09).txt
  • maintenance-mode-content-sample-www-dataprofessionals-com-au-(2022-01-09) 2.txt

• Sample login page using maintenance.min.login.css in theme directory; letting user know that maintenance mode is active (the light orange background behind the logo).

  • maintenance.min.login.css-sample-www-dataprofessionals-com-au-(2022-01-09).txt

• Sample frontend page using maintenance.min.frontend.css in theme directory; letting logged in users know that maintenance mode is still active while they navigate around the site (the light orange background of all pages title row).

  • maintenance.min.frontend.css-sample-www-dataprofessionals-com-au-(2022-01-09).txt

• Sample usage of the four new shortcodes, used on a custom member registration page.

  • WordPress edit mode of the member registration page; see the shortcodes in action.
  

  • Member registration page when maintenance mode is disabled.
    

  • Member registration page when maintenance mode is enabled and logged-out.
    

  • Member registration page when maintenance mode is enabled and logged-in.

  

Hope this helps.

Kind regards,
John.