=== C3 Cloudfront Cache Controller ===
Contributors: amimotoami,hideokamoto,megumithemes,wokamoto,miyauchi,hnle,bartoszgadomski,jepser,johnbillion,pacifika
Donate link: http://wp-kyoto.net/
Tags: AWS,CDN,CloudFront
Requires at least: 4.9.0
Tested up to: 6.9.1
Stable tag: 7.3.2
License: GPLv3 or later
License URI: http://www.gnu.org/licenses/gpl-3.0.html

This is simple plugin that clear all cloudfront cache if you publish posts.

== Description ==

This is simple plugin that clear all cloudfront cache if you publish posts.
You can easy use CloudFront in front of WordPress.

== Fixtures ==

* wp_is_mobile()
Check device viewer type by CloudFront header.
Now supports `HTTP_CLOUDFRONT_IS_MOBILE_VIEWER` and `HTTP_CLOUDFRONT_IS_TABLET_VIEWER`.

* preview url
In preview page, plugin add `post_date` query to avoid CloudFront cache.
And set `wordpress_loginuser_last_visit` cookie for avoid CloudFront cache too.

The `wordpress_loginuser_last_visit` cookie will be removed if user sign out.

= Invalidation(Clear Cache) Page URL =
This plugin send following page url to CloudFront Invalidation API.

- TOP page URL
- Published Post Page URL
- Category Archive Page URL

== Installation ==

1. Activate the plugin through the 'Plugins' menu in WordPress
2. Create IAM user to attach valid IAM Policy for AWS CloudFront
3. Configure the plugin settings from wp-admin

== AWS IAM Policy Example ==

`
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": [
                "cloudfront:GetDistribution",
                "cloudfront:ListInvalidations",
                "cloudfront:GetStreamingDistribution",
                "cloudfront:GetDistributionConfig",
                "cloudfront:GetInvalidation",
                "cloudfront:CreateInvalidation"
            ],
            "Effect": "Allow",
            "Resource": "*"
        }
    ]
}
`

**Note:** The `cloudfront:GetInvalidation` permission is required for viewing detailed invalidation information. If this permission is not granted, the detail view feature will be disabled gracefully without affecting other plugin functionality.

## Adding your configuration through env vars

The plugin can be configured by defining the following variables:

- `AWS_ACCESS_KEY_ID`
- `AWS_SECRET_ACCESS_KEY`
- `C3_DISTRIBUTION_ID`

You can put these variables like the code into the wp-config.php

`php
define( 'AWS_ACCESS_KEY_ID', '' );
define( 'AWS_SECRET_ACCESS_KEY', '' );
define( 'C3_DISTRIBUTION_ID', '' );
`

== Cookie ==
This plugin set a Cookie named `wordpress_loginuser_last_visit` to the user.
It prevents CDN caching when the user is previewing his posts or contents.
Once logging out from Dashboard, plugin removes this cookie from user.

== Frequently Asked Questions ==

= When it send invalidation request？ =

If post published,this plugin post invalidation request to CloudFront.

= Custom Implementation =

This plugin now uses a custom AWS CloudFront implementation instead of the official AWS SDK to reduce dependencies and improve performance.

== Changelog ==

= 7.3.2 =
* [Fix]
  - Exclude `.cursor` and `.github` from WordPress.org distribution package to prevent packaging conflicts
* [Maintenance]
  - Improve release workflow settings for WordPress.org asset/readme sync stability
  - Update release documentation for branch strategy and version consistency checks

= 7.3.1 =
* [Fix]
  - Improved cache invalidation handling for posts transitioning between published and draft states, ensuring proper cache clearing during state changes
  - Enhanced URL detection for more reliable CloudFront invalidation across different URL formats
* [Improvements]
  - Extended support for WordPress subdirectory installations to ensure proper cache path handling

= 7.2.0 =
* [Feature] Add 3 new path adjustment hooks for more granular invalidation control:
  - `c3_invalidation_post_batch_home_path` - Customize home path for single post invalidation
  - `c3_invalidation_posts_batch_home_path` - Customize home path for multiple posts invalidation
  - `c3_invalidation_manual_batch_all_path` - Customize path for manual "clear all" operations
* [Enhancement] Update Hooks.php to support variable arguments in apply_filters method
* [Compatibility] Maintain full backward compatibility with existing c3_invalidation_items filter

== 7.1.0 ==
* [Feature] Add invalidation detail view with modal popup showing invalidation paths, caller reference, and status
* [Fix] Fix invalid path returned for post type without archive page

== 7.0.1 ==
* [Update] Improved AWS API call processing for better security and PHP 8.x compatibility

== 7.0.0 ==
* [Breaking Change] Remove AWS SDK dependency and implement custom HTTP CloudFront API client
* [Update] Add comprehensive invalidation logging with c3_log_invalidation_list filter
* [Update] Add configurable CloudFront region and HTTP timeout settings

== 6.1.6 ==
* [Fix] Fixed PHP 8 syntax errors by adding nullable type hints
* [Fix] Fixed deprecation warnings about creation of dynamic properties in Invalidation_Service.php
* [Fix] Fixed deprecation warnings about creation of dynamic properties in Cron_Service.php
* [Fix] Fixed PHP 7.4 syntax errors in test files

== 6.1.5 ==
* [Fix] Changed to install the AWS SDK using composer instead of aws.phar.

== 6.1.4 ==
* [Update] Support post_type_archive_link

== 6.1.3 ==
* [Fix] Lost filter c3_invalidation_items From v6.0.0

== 6.1.2 ==
* [Fix] php version compare issue

== 6.1.1 ==
* [Fix] Plugin deactivation issue

== 6.1.0 ==
* [Update] Flush cache by post_ids

== 6.0.0 ==
* [Breaking Change] Re-write entire code
* [Update] Add `c3_log_cron_invalidation_task` filter to show cron job Logs
* [Update] Add `c3_aws_sdk_path` filter to change or remove bundled AWS SDK path

== 5.5.1 ==
* [Update] Replace the top level menu with a Settings submenu

= 5.5.0 =
* [Update] Can use defined variables for AWS Credentials

= 5.4.2 =
* [Bug fix] Set cookie path in preview page

= 5.4.1 =
* [Bug fix] Undefined Paths index in invalidation query cron event

= 5.4.0 =
* [Update] Update preview fix plugin

= 5.3.4 =
* [Bug fix] Small bug fix

= 5.3.3 =
* [Change SDK] replace sdk

= 5.3.2 =
* [Bug fix] Use EC2 role if using as AMIMOTO Managed hosting

= 5.3.1 =
* [Add filter] Can select AWS SDK version by filter

= 5.3.0 =
* [Update SDK] Use AWS SDK v3 when you using php 5.6 or later

= 5.2.1 =
* [For AMIMOTO Managed] bug fix to run by WP-CLI

= 5.2.0 =
* [Add filter] We can disable to register wp-cron that retry request invalidation.
* [Readme] Update readme to see IAM Policy example.

= 5.1.0 =
* [Update preview fixture] Set cookie to avoid CloudFront cache if user sign in
* [Update preview fixture] Unset cookie for avoide CloudFront cache if user sign out

= 5.0.0 =
* Support CloudFront viewer params on `wp_is_mobile()`.(4.9.0 or later)

= 4.4.0 =
* Fix small bug
* Add some feature for AMIMOTO Managed hosting user


= 4.3.1 =
* Fix cron interval
* add filters `'c3_invalidation_interval`, `c3_invalidation_cron_interval`, `c3_invalidation_item_limits`.
* update default invalidation interval & items.

= 4.3.0 =
* Schedule cron event if you published many post at the same time

= 4.2.1 =
* Fix 'c3_credential' filter position

= 4.2.0 =
* Support AMIMOT Dashboard

= 4.1.0 =
* Show Invalidation Logs

= 4.0.3 =
* Auto Deploy by Travis

= 4.0.2 =
* Add WP-CLI param check ( wp c3 flush)
* change transient_key

= 4.0.1 =
* Bug fix ( conflict Nephila Clavata )

= 4.0.0 =
* Support AWS SDK Version3
* Remove action hook -> 'c3_add_setting_before'
  use 'c3_after_title' filter hook instead.
* Remove action hook -> 'c3_add_setting_after'
  use 'c3_after_auth_form' filter hook instead.

= 3.0.0 =
* Include CF Preview Fix plugin
* Rename

= 2.4.3 =
* Fix Catch Exception BUG

= 2.4.2 =
* Fix CLI BUG

= 2.4.1 =
* Fix CLI BUG

= 2.4.0 =
* Add WP-CLI Command ( Update Settings )

= 2.3.0 =
* Add WP-CLI Command

= 2.2.2 =
* Force Invalidation

= 2.2.1 =
* Fix Typo

= 2.2.0 =
* Add Filter for using EC2 Instance Role.
* Translationable in t.w.org

= 2.1.1 =
* Fix too many invalidation url error.

= 2.1.0 =
* Add hook to customize invalidation URL
* support new invalidation url, terms.
* Manualy invalidation button added

= 2.0.2 =
* Change AWS SDK
* code refactoring by wokamoto
* Invalidation URL

= 2.0.1 =
* Change AWS SDK
* code refactoring by wokamoto
* Invalidation URL

= 1.0 =
* Initial released.

== Upgrade Notice ==

== 6.1.0 ==
* [Fix] Plugin deactivation issue