kevinveenbirkenbach/computer-playbook
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computer-playbook/roles/sys-front-inj-javascript/README.md
Kevin Veen-Birkenbach 231fd567b3 feat(frontend): rename inj roles to sys-front-*, add sys-svc-cdn, cache-busting lookup 
Introduce sys-svc-cdn (cdn_paths/cdn_urls/cdn_dirs) and ensure CDN directories + latest symlink.

Rename sys-srv-web-inj-* → sys-front-inj-*; update includes/templates; serve shared/per-app CSS & JS via CDN.

Add lookup_plugins/local_mtime_qs.py for mtime-based cache busting; split CSS into default.css/bootstrap.css + optional per-app style.css.

CSP: use style-src-elem; drop unsafe-inline for styles. Services: fix SYS_SERVICE_ALL_ENABLED bool and controlled flush.

BREAKING CHANGE: role names changed; replace includes and references accordingly.

Conversation: https://chatgpt.com/share/68b55494-9ec4-800f-b559-44707029141d
2025-09-01 10:10:23 +02:00

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🌐 Global JavaScript Injector for Nginx

Description

This Ansible role injects a custom JavaScript snippet into all HTML responses served by Nginx. It leverages Nginx’s sub_filter to seamlessly insert your application-specific script just before the closing </head> tag, ensuring that your code runs on every page load—perfect for global feature flags, analytics, or UI enhancements.

Features

  • One-line Script Injection
    Collapses your JavaScript into a single line and injects it via sub_filter for minimal footprint and maximal compatibility.

  • Easy CSP Integration
    Automatically computes and appends a CSP hash entry for your script, so you can lock down Content Security Policy without lifting a finger.

  • Conditional Activation
    Activates only when you enable the javascript feature for a given application, keeping your server blocks clean and performant.

  • Debug Mode
    Supports an MODE_DEBUG flag that appends optional console.log statements for easier troubleshooting in staging or development.

Author

Developed by Kevin Veen-Birkenbach Consulting & Coaching Solutions — veen.world

Happy automating! 🎉