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- wiki/README.md: Wiki system guide with page templates and conventions - wiki/architecture.md: Dealix architecture wiki page - deployment-checklist.md: Enhanced with full pre-deploy, deploy, post-deploy, rollback procedures https://claude.ai/code/session_01LsnvBa7HwF5hs99VZbgLGj
165 lines
8.3 KiB
Markdown
165 lines
8.3 KiB
Markdown
# Dealix System Architecture (بنية نظام ديلكس)
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**Type**: architecture
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**Summary**: Multi-tenant AI CRM built on FastAPI + Next.js + PostgreSQL + Redis + Celery with Arabic-first UX and PDPL compliance.
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**Summary_AR**: نظام إدارة علاقات عملاء ذكي متعدد المستأجرين مبني على FastAPI و Next.js و PostgreSQL مع واجهة عربية أولاً والتوافق مع نظام حماية البيانات.
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**Key Facts**:
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- Backend: FastAPI 0.115.6 on Python 3.12, async everywhere (asyncpg, async SQLAlchemy)
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- Frontend: Next.js 15 with App Router, TypeScript 5.7, RTL-first layout
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- Database: PostgreSQL 16 with tenant_id isolation on every table; Alembic migrations
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- Cache/Queue: Redis 7 for caching + Celery 5.x task broker with 4 workers + Celery Beat scheduler
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- AI Engine: Groq (primary) with OpenAI fallback; Arabic NLP, lead scoring, conversation intelligence
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- Compliance: PDPL-native — consent checked before every outbound message; SAR 5M penalty per violation
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- Multi-agent system: Manus-style orchestrator with 8 specialized roles and event-to-agent routing
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**Provenance**: AGENTS.md, CLAUDE.md, memory/architecture/system-overview.md, docker-compose.yml
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**Confidence**: high
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**Related Pages**: [glossary](./glossary.md), [system-overview](../architecture/system-overview.md)
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**Last Updated**: 2026-04-11
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**Stale**: false
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---
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## High-Level Architecture
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```
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┌──────────────────────────┐
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│ Nginx Reverse Proxy │
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└─────────┬────────┬─────────┘
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│ │
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┌─────────────┘ └──────────────┐
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▼ ▼
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┌──────────────────┐ ┌──────────────────┐
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│ Next.js Frontend │ │ FastAPI Backend │
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│ (Port 3000) │ │ (Port 8000) │
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│ - Dashboard │ │ - API v1 │
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│ - Landing Page │ │ - Services Layer │
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│ - Auth Flows │ │ - AI Engine │
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│ - Pipeline View │ │ - Agent System │
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│ - RTL / Arabic │ │ - Integrations │
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└──────────────────┘ └────────┬───────────┘
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│
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┌─────────────┼──────────────┐
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▼ ▼ ▼
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┌───────────┐ ┌───────────┐ ┌────────────┐
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│ PostgreSQL │ │ Redis │ │ Celery │
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│ 16 │ │ 7 │ │ Workers │
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│ (asyncpg) │ │ (cache + │ │ (4) + │
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│ │ │ broker) │ │ Beat │
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└───────────┘ └───────────┘ └────────────┘
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```
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## Backend Layers
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### API Layer (`backend/app/api/v1/`)
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RESTful endpoints versioned under `/api/v1/`. JWT authentication via python-jose. All endpoints require tenant context.
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Key route groups:
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- **Auth**: registration, login, token refresh, password reset
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- **Leads**: CRUD, scoring, bulk import, assignment
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- **Deals**: pipeline management, stage transitions, forecasting
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- **Inbox**: unified WhatsApp + Email + SMS conversation view
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- **Sequences**: automated outreach cadences
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- **Compliance**: PDPL consent management, data subject rights
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- **Proposals / CPQ**: configure-price-quote with Arabic PDF generation
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### Services Layer (`backend/app/services/`)
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Business logic is isolated from API routes. Each service is a class with async methods.
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Core services:
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- `ai/` — Arabic NLP (intent, sentiment, entity extraction), lead scoring (0-100), conversation intelligence
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- `pdpl/` — Consent manager, data rights handler, audit trail
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- `cpq/` — Configure-Price-Quote with SAR currency handling
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- `agents/` — Multi-agent orchestrator, 8 specialized roles, event routing, executor with retry
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- `sequence_engine.py` — Automated multi-step outreach with channel rotation
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- `model_router.py` — Task-specific LLM model selection across providers
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- `security_gate.py` — Runtime security verification, PDPL enforcement
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- `tool_verification.py` — Agent action audit trail (intent vs claim vs execution)
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### Integration Layer (`backend/app/integrations/`)
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Adapters for external services:
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- **WhatsApp**: UltraMsg API (primary Saudi channel, 85% penetration)
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- **Email**: SMTP with template rendering
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- **SMS**: Twilio / local Saudi provider
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- **Payments**: Stripe with SAR support
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- **Tax**: ZATCA e-invoicing compliance
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### Worker Layer (`backend/app/workers/`)
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Celery tasks for async processing:
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- Lead scoring recalculation
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- Sequence step execution
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- Email/WhatsApp delivery
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- Analytics aggregation
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- Scheduled reports
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## Frontend Architecture
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- **Framework**: Next.js 15 with App Router
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- **Language**: TypeScript 5.7 in strict mode
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- **Styling**: Tailwind CSS 3.4 with RTL-first layout (`dir="rtl"`)
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- **Fonts**: IBM Plex Sans Arabic (primary), Tajawal (secondary)
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- **Components**: Functional components with hooks
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- **State**: Server components by default, client where interactivity needed
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## Data Architecture
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### Multi-Tenant Isolation
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Every table includes a `tenant_id` column. All queries are scoped by tenant at the ORM level. Cross-tenant access is a Class C forbidden action.
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### Key Models
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- **Lead**: Contact with scoring, source tracking, assignment
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- **Deal**: Pipeline stage, value (SAR), probability, close date
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- **Company**: Organization with enrichment data
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- **Sequence**: Multi-step outreach cadence
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- **Consent**: PDPL consent record with purpose, channel, expiry (12 months)
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- **Meeting**: Scheduled interactions with intelligence extraction
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### Database Conventions
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- All money fields use `Numeric` type (never Float)
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- Soft-delete before hard-delete
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- Alembic for all migrations
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- Timezone: Asia/Riyadh (UTC+3)
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- Currency: SAR default
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## AI Architecture
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### LLM Provider Chain
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1. **Groq** (llama-3.1-70b): Fast classification, Arabic NLP
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2. **Claude**: Sales copy, proposals, complex reasoning
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3. **Gemini**: Research, analysis
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4. **DeepSeek**: Code generation
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5. **OpenAI GPT-4o-mini**: Fallback
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### Agent System
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Manus-style orchestrator with specialized agents:
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- Lead Qualifier, Deal Advisor, Meeting Prep, Sequence Optimizer
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- Content Generator, Analytics Reporter, Compliance Checker, Escalation Handler
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Event-to-agent routing via `router.py`. Executor handles retry logic and escalation to human.
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## Security & Compliance
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### PDPL (نظام حماية البيانات الشخصية)
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- Consent required before any outbound message
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- Consent tracks: purpose, channel, timestamp, expiry
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- Data subject rights: access, correction, deletion
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- Full audit trail for consent changes
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- Auto-expire after 12 months
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- Penalty: up to SAR 5,000,000 per violation
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### Authentication
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- JWT tokens via python-jose
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- Role-based access: owner, admin, manager, sales_rep, viewer
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- Tenant-scoped permissions
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### Policy Classes
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- **Class A** (Auto-allowed): Reading, testing, documentation, analysis
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- **Class B** (Approval required): Migrations, messaging, payments, deployments
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- **Class C** (Forbidden): Secret exfiltration, cross-tenant access, ungoverned bulk messaging
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## Deployment
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- **Containerized**: Docker Compose for all services
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- **Reverse proxy**: Nginx
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- **CI/CD**: GitHub Actions (feature branch → PR → review → staging → canary 10% → production)
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- **Monitoring**: Health checks, error tracking, performance metrics
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