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computer-playbook/roles/sys-front-inj-javascript
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Kevin Veen-Birkenbach c835ca8f2c refactor(front-injection): stabilize run_once flow and explicit web-service loading 
- sys-front-inj-all: load web-svc-cdn and web-svc-logout once; reinitialize inj_enabled after services; move run_once block to top; reorder injections.
- sys-front-inj-css: move run_once call into 01_core; fix app_style_present default; simplify main.
- sys-front-inj-desktop/js/matomo: deactivate per-role run_once blocks; keep utils/run_once where appropriate.
- sys-front-inj-logout: switch to files/logout.js + copy; update head_sub mtime lookup; mark set_fact tasks unchanged.
- sys-svc-cdn: inline former 01_core tasks into main; ensure shared/vendor dirs and set run_once in guarded block; remove 01_core.yml.

Rationale: prevent cascading 'false_condition: run_once_sys_svc_cdn is not defined' skips by setting run-once facts only after the necessary tasks and avoiding parent-scope guards; improves determinism and handler flushing.

Conversation: https://chatgpt.com/share/68ecfaa5-94a0-800f-b1b6-2b969074651f
2025-10-13 15:12:23 +02:00
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refactor(front-injection): stabilize run_once flow and explicit web-service loading
2025-10-13 15:12:23 +02:00
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README.md
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README.md

🌐 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! 🎉