### Problem
Currently, the attachment button visibility in the widget uses both the
SDK's `enableFileUpload` flag AND the inbox's attachment settings with
an AND condition. This creates an issue for users who want to control
attachments solely through inbox settings, since the SDK flag defaults
to `true` even when not explicitly provided.
**Before:**
- SDK not set → `enableFileUpload: true` (default) + inbox setting =
attachment shown only if both true
- SDK set to false → `enableFileUpload: false` + inbox setting =
attachment always hidden
- SDK set to true → `enableFileUpload: true` + inbox setting =
attachment shown only if both true
This meant users couldn't rely solely on inbox settings when the SDK
flag wasn't explicitly provided.
### Solution
Changed the logic to prioritize explicit SDK configuration when
provided, and fall back to inbox settings when not provided:
**After:**
- SDK not set → `enableFileUpload: undefined` → use inbox setting only
- SDK set to false → `enableFileUpload: false` → hide attachment (SDK
controls)
- SDK set to true → `enableFileUpload: true` → show attachment (SDK
controls)
---------
Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
# Pull Request Template
## Description
**This PR includes:**
* Refactored two legacy mixins (`availability.js`,
`nextAvailability.js`) into a Vue 3 composable (`useAvailability`),
helper module and component based rendering logic.
* Fixed an issue where the widget wouldn't load if business hours were
enabled but all days were unchecked.
* Fixed translation issue
[[#11280](https://github.com/chatwoot/chatwoot/issues/11280)](https://github.com/chatwoot/chatwoot/issues/11280).
* Reduced code complexity and size.
* Added test coverage for both the composable and helper functions.
## Type of change
- [x] Bug fix (non-breaking change which fixes an issue)
## How Has This Been Tested?
### Loom video
https://www.loom.com/share/2bc3ed694b4349419505e275d14d0b98?sid=22d585e4-0dc7-4242-bcb6-e3edc16e3aee
### Story
<img width="995" height="442" alt="image"
src="https://github.com/user-attachments/assets/d6340738-07db-41d5-86fa-a8ecf734cc70"
/>
## Checklist:
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules
Fixes https://github.com/chatwoot/chatwoot/issues/12012
---------
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Pranav <pranav@chatwoot.com>
Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>
# Pull Request Template
## Description
Replaces the messageMixin with the new useMessage composable
Fixes
https://linear.app/chatwoot/issue/CW-3475/rewrite-messagemixin-mixin-to-a-composable
## Type of change
Please delete options that are not relevant.
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality not to work as expected)
- [ ] This change requires a documentation update
