proposal-system/README.md

# Proposal System

Internal proposal management platform for Sea Haven Industries. Dispatchers submit proposal requests, AI generates draft line items from historical data via Bedrock RAG, admins review and approve in a pricing workspace, and the system produces branded PDFs for delivery.

## Architecture Overview

Monorepo with five primary services:

- **.NET 8 API** -- Clean Architecture REST API hosted on Lambda behind API Gateway
- **React 19 Web** -- MUI v7 admin/dispatcher workspace served via CloudFront + S3
- **React Native Mobile** -- iOS-first field app for dispatchers (offline-capable)
- **Python Lambdas** -- PDF extraction, PDF generation, library ingestion, AI suggestions
- **CDK Infrastructure** -- Three TypeScript stacks managing all AWS resources

## Repository Structure

```
proposal-system/
├── api/            .NET 8 Web API (Lambda-hosted, EF Core + PostgreSQL)
├── web/            React 19 + MUI v7 + Vite frontend
├── mobile/         React Native 0.79 iOS app
├── lambdas/        Python 3.12 processing functions (arm64)
├── infra/          CDK TypeScript (3 stacks)
├── shared/         TypeScript API contracts (shared between web + mobile)
├── scripts/        Post-deploy and utility scripts
├── .github/        CI/CD workflows
└── docker-compose.yml
```

## Tech Stack

| Component | Technologies |
|---|---|
| API | .NET 8, ASP.NET Core, EF Core + Npgsql, FluentValidation, Cognito JWT, Amazon.Lambda.AspNetCoreServer |
| Web | React 19, TypeScript, MUI v7, Vite, Redux Toolkit, TanStack Query, axios |
| Mobile | React Native CLI 0.79, React 19, React Native Paper, React Navigation, react-native-app-auth (PKCE), Keychain, offline draft queue |
| Lambdas | Python 3.12, arm64, pdfplumber, reportlab, httpx, boto3 |
| Infrastructure | CDK TypeScript (aws-cdk-lib 2.253.1) |
| AI/RAG | Bedrock Knowledge Base (Titan Embeddings v2), OpenSearch Serverless, Claude via Bedrock Runtime |
| Auth | Cognito User Pool + Google OAuth IdP (groups: dispatchers, admins, sysadmins) |

## AWS Resources

All resources are in **us-east-1** (account 328440206208). CDK stacks are defined but not yet deployed to AWS.

| CDK Stack | Key Resources |
|---|---|
| `proposal-system-foundation` | RDS PostgreSQL 15 (t4g.small), S3 buckets, SQS queue + DLQ, Cognito user pool, Secrets Manager |
| `proposal-system-compute` | API Gateway HTTP API, .NET 8 API Lambda, Python Lambdas (pdf-extract, pdf-generate, library-ingest, suggestions), Bedrock KB |
| `proposal-system-frontend` | CloudFront distribution (S3 OAC) |

| Resource Type | Names |
|---|---|
| S3 Buckets | `proposal-system-uploads`, `proposal-system-generated`, `proposal-system-library`, `seahaven-ios-certificates` |
| SQS | `proposal-system-jobs` + `proposal-system-jobs-dlq` (message body filtering by jobType) |
| Secrets | `proposal-system/db-credentials`, `proposal-system/internal-api-key` |

## Local Development

### Prerequisites

- .NET 8 SDK
- Node.js 24+
- Python 3.12
- PostgreSQL 16 (via docker-compose or native)

### Database

```bash
docker compose up -d    # starts PostgreSQL on port 5432
# database: proposalsystem, password: localdev
```

### API

```bash
cd api
dotnet restore
dotnet run --project src/ProposalSystem.Api
# runs on http://localhost:5000
```

In development mode (`DevMode=true` in appsettings.Development.json):
- JWT auth uses a local symmetric HMAC key (no Cognito required)
- S3 service returns fake presigned URLs
- SQS publisher logs messages without sending

### Web Frontend

```bash
cd web
npm install
npm run dev
# runs on http://localhost:5173, proxies /api to localhost:5000
```

When `VITE_COGNITO_CLIENT_ID` is not set, the login screen shows role-selector buttons for local development.

### Infrastructure

```bash
cd infra
npm install
npx cdk synth
```

## CI/CD

### CI (on pull request to main)

Five parallel jobs calling org reusable workflows:

| Job | Workflow | What it checks |
|---|---|---|
| .NET Build & Test | `ci-dotnet.yaml` | Restore, build, test the API solution |
| Web Frontend Check | `ci-typescript-cdk.yaml` | TypeScript typecheck for web |
| Mobile Typecheck | `ci-typescript-cdk.yaml` | TypeScript typecheck for mobile |
| Python Lint | `ci-python-sam.yaml` | ruff check + format on lambdas/ |
| CDK Synth | `ci-typescript-cdk.yaml` | Synthesize CDK stacks (includes .NET publish) |

### Deploy (on push to main)

Calls `cd-cdk.yaml` reusable workflow:
1. Publishes .NET 8 API and Python Lambdas
2. Runs `cdk deploy --all`
3. Executes `scripts/post-deploy.sh` (builds web, syncs to S3, invalidates CloudFront)

Deploy uses OIDC role `githubdeploy-proposal-system`. Concurrency group prevents parallel deploys.

### Mobile Deploy (currently disabled)

Workflow: `deploy-mobile.yaml` -- triggered by `workflow_dispatch` only (manual).

To activate for release, change the trigger to push on main with path filter `mobile/**`.

## Mobile iOS

The iOS app uses **Fastlane** with **match** for code signing. Certificates and profiles are stored in the `seahaven-ios-certificates` S3 bucket (versioning enabled, public access blocked).

Build and upload to TestFlight is handled by the `cd-mobile-ios.yaml` reusable workflow. Required secrets:

| Secret | Purpose |
|---|---|
| `AWS_DEPLOY_ROLE_ARN` | OIDC role for match S3 access |
| `MATCH_PASSWORD` | Decryption passphrase for signing assets |
| `ASC_KEY_ID` | App Store Connect API key ID |
| `ASC_ISSUER_ID` | App Store Connect issuer |
| `ASC_KEY_CONTENT` | App Store Connect API key (base64) |

To activate automatic deploys, update `deploy-mobile.yaml` trigger from `workflow_dispatch` to:

```yaml
on:
  push:
    branches: [main]
    paths: ["mobile/**"]
```

## Data Flow

1. Dispatcher submits proposal request (web or mobile)
2. API creates proposal record, publishes SQS message
3. If vendor PDF attached: `pdf-extract` Lambda parses and structures data
4. Suggestions Lambda queries Bedrock KB for similar proposals, generates line items via Claude
5. Admin reviews/edits line items in pricing workspace
6. On approval: `pdf-generate` Lambda creates branded PDF
7. On send: `library-ingest` Lambda adds approved proposal to KB for future matching