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halobestie-clone/CLAUDE.md
ramadhan sjamsani b4efcf14c2 Phase 3 scaffold: chat engine (WebSocket, FCM, pricing, timer, extension, history) 
- Backend: WebSocket plugin, chat/pricing/timer/extension/closure/notification services
- Client app: ChatBloc, pricing dialog, chat screen with message status, extension/goodbye flow, history
- Mitra app: MitraChatBloc, ExtensionBloc, chat screen, extension accept/reject, history
- Control center: free trial, extension timeout, early end config toggles
- DB migration: chat_messages, session_closures, session_extensions, customer_transactions tables

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-07 23:58:11 +08:00

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Halo Bestie — Project Root

Mental health chat platform connecting clients (users seeking support) with trained mental health professionals (mitra). Paid service with optional trial period.

Folder Structure

Folder Purpose
requirement/ Requirement documents (phased)
backend/ Fastify.js API server
client_app/ Flutter app for clients (iOS + Android)
mitra_app/ Flutter app for professionals/mitra (iOS + Android)
control_center/ React + Vite SPA — internal management tool

Tech Stack

  • Backend: Fastify.js — single codebase, two listeners
    • Public (port 3000) → serves client_app and mitra_app
    • Internal (port 3001) → serves control_center only
  • Database: PostgreSQL (GCP Cloud SQL)
  • Auth: Firebase Auth — Google/Apple social login + phone OTP (native Flutter UI, no WebView)
  • Payment: Xendit
  • Mobile: Flutter (iOS + Android)
  • Control Center: React + Vite SPA
  • Infra: GCP — Cloud Run (backend), Cloud SQL (PostgreSQL), VPC private networking

Key Architectural Decisions

  • One backend serves both mobile apps — routes namespaced as /api/client/, /api/mitra/, /api/shared/
  • Control center is internal-only — never expose its API routes to the public internet; protected via Nginx allow/deny + VPN
  • Firebase Auth tokens are verified on Fastify via JWT — user data lives in PostgreSQL, linked by Firebase UID
  • Horizontal scaling (Cloud Run) handles load — do not split into microservices prematurely
  • Real-time features use WebSocket for chat + Valkey pub/sub as backend bus; FCM push for background notifications
  • Pairing uses blast-to-all-available-mitras with first-come-first-served acceptance

Current Progress

  • Phase 1 (Authentication) — fully scaffolded
    • Backend routes, services, DB migration + seed script
    • client_app: all auth screens (welcome, display name, register, OTP, force-register)
    • mitra_app: OTP-only login
    • control_center: email/password login, mitra management, user management, anonymity settings
    • Docs: requirement/phase1-plan.md, requirement/phase1-api-contract.md, requirement/client_app_mockup.html
  • Phase 2 (Mitra Online Status & Pairing) — fully scaffolded
    • Backend: Valkey pub/sub, mitra online/offline status + heartbeat + auto-offline, pairing service, session management, dashboard stats
    • client_app: "Mulai Curhat" CTA, searching/found/no-bestie/session-active screens, PairingBloc
    • mitra_app: online/offline toggle, heartbeat + lifecycle handling, incoming request notification, active sessions screen
    • control_center: dashboard (auto-refresh), max customers per mitra config, session management + reroute, mitra online logs
    • Docs: requirement/phase2.md, requirement/phase2-plan.md
  • Phase 3 (Chat Engine) — fully scaffolded
    • Backend: WebSocket plugin, chat message service, session timer (backend-authoritative), extension/closure services, FCM push notifications, pricing service (mock tiers + free trial)
    • client_app: ChatBloc (WebSocket), ChatOpeningBloc (pricing), SessionClosureBloc, chat screen with message status (sent/delivered/read), typing indicator, extension/goodbye flow, chat history + transcript screens, FCM setup
    • mitra_app: MitraChatBloc (WebSocket), ExtensionBloc, chat screen, extension accept/reject, goodbye flow, chat history + transcript screens, FCM setup
    • control_center: free trial config, extension timeout config, early end toggles (mitra/customer)
    • Docs: requirement/phase3.md, requirement/phase3-plan.md

Domain Concepts

  • Client — end user seeking mental health support
  • Mitra — trained mental health professional (partner)
  • Sessions are paid; Xendit handles payment and subscription/trial logic
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