Looking to build simple independent chat application module (single page like truelancers workstream chat window) which we will connect to existing application.

Requirement:

• Use latest Laravel/ Lumen framework & VueJs
• responsive
• Use Pusher to send message(Preferred) / Or you can suggest any other api integration
• Both existing & new app will share same DB
• Create unique chat id link with expiry & message count limit 
• 1-on-1 Chat who has access to that link 
• support sending images
• Existing app will create new chat id, add users and redirect to new chat app
• Once link expired or remaining message count =0 , block chatting
• No unauthorised access
• Share session between apps. 
• link back to main website.
• detect both user online/offline. Show profile name pic.
• if one user offline send email. Might be from main app. (Webhook?)
• independent deployment. No access to main app. Need to share script/logic need to add/configure in main app