ERP/README.md

# Procurement Stack v1.3 — Dockerized (PostgreSQL + FastAPI + React + MinIO)

Self-contained ship package: everything needed to run the stack is in this
folder — no external files or sibling folders required.

| Service | Container | Tech | Exposed port |
|---|---|---|---|
| **postgres** | `procurement-postgres` | PostgreSQL 18 | `5433` |
| **minio** | `procurement-minio` | MinIO object storage (S3-compatible) | `9000` (API), `9001` (console) |
| **casdoor** | `procurement-casdoor` | Casdoor (OIDC identity provider) | `8080` |
| **api** | `procurement-api` | FastAPI + SQLAlchemy (asyncpg) | `8000` |
| **frontend** | `procurement-frontend` | React 19 + Vite, served by nginx | `3000` |

```
Browser ──► frontend :3000 (nginx SPA)
                │
                └── /api/* proxy ──► api :8000 (FastAPI, /api/v1)
                                          │
                                          ├── postgres :5432 (procurement DB)
                                          ├── minio :9000 (invoice/proforma files, bucket `procurement-files`)
                                          └── casdoor :8000 (OIDC — login for the inventory panel)
```

---

## 📁 Layout

```text
v1.3/
├── docker-compose.yml        ← all paths are relative to this folder
├── start.ps1                 ← PowerShell helper (build + start + status)
├── mc.cmd                    ← MinIO Client helper (inspect the bucket)
├── README.md
├── sql/
│   └── migration.sql         ← DB schema v2.6 (auto-runs on first boot)
├── docs/                     ← ERDs + migration plan
│   ├── erd.txt               (v2.4 — old procurement schema)
│   ├── new erd.txt           (v2.5 — material → supplier → category)
│   ├── NewERD.txt            (v2.6 — integrated procurement + inventory)
│   └── material-supplier-category-migration-plan.md
├── backend/                  ← build context of the `api` service
│   ├── Dockerfile
│   ├── requirements.txt
│   ├── .dockerignore
│   ├── app/                  (source code — procurement + inventory + auth)
│   └── tools/                (smoke-test + seed scripts, copied into the image)
└── frontend/                 ← build context of the `frontend` service
    ├── Dockerfile
    ├── nginx.conf
    ├── .dockerignore
    ├── .env.example          (copy to .env if you need a custom API base URL)
    ├── index.html
    ├── package.json
    ├── package-lock.json
    ├── tsconfig*.json
    ├── vite.config.ts
    ├── public/
    └── src/
        └── pages/
            ├── Dashboard/    (procurement office)
            ├── Wizard/       (add new offer)
            ├── Suppliers/    (suppliers & topics)
            ├── Projects/     (projects)
            ├── Units/        (unit conversions)
            └── Inventory/    (warehouse management panel — React port)
```

---

## 🔐 Login

The whole system is behind a login page (`/login`):

- **مدیر پروژه (PM)** → lands in the inventory panel (their project) — can record
  stock changes, manage the project's warehouses and confirm arrivals («کالاهای در راه»).
- **مدیر تدارکات / ادمین** (the same person) → lands in the procurement office — can manage
  quotes, suppliers, projects, and in the inventory panel: dashboard, daily control,
  «کالاهای در راه» (receiving included) and «سازمان‌دهی» (users, PMs, warehouses).
  The «انبارها» and «تغییر موجودی» sections are PM-only.

Until Casdoor is fully seeded, use «ورود آزمایشی (توسعه)» on the login page
(role + project). Casdoor (org `inventory`, app `inventory-app`) is the planned
production identity source.

---

## Prerequisites (target machine)

- **Docker Desktop** (Windows) or Docker Engine + Compose plugin (Linux/macOS)
- ~3–4 GB free disk for images (`postgres:18`, `python:3.13-slim`, `node:22-alpine`, `nginx:alpine`, `minio/minio`, `minio/mc`)
- Internet access on first build (image + `npm ci` downloads)

---

## Start the whole stack

```powershell
cd <this-folder>
docker compose up -d --build
```

First run downloads base images and builds the frontend (takes a few minutes).
Subsequent runs: `docker compose up -d`.

Wait until all services are up:

```powershell
docker compose ps
```

All should show `Up` (postgres also `(healthy)`).

---

## Verify

| What | Where |
|---|---|
| Frontend UI | http://localhost:3000 |
| API docs (Swagger) | http://localhost:8000/docs |
| API health | http://localhost:8000/health → `{"status":"ok","service":"procurement-api"}` |
| MinIO console | http://localhost:9001 (user/pass `minioadmin`/`minioadmin`) |
| Database | `localhost:5433`, db `procurement`, user/pass `postgres`/`postgres` |

Quick end-to-end check (frontend proxy → API → DB):

```powershell
curl http://localhost:3000/api/v1/quotes?expand=supplier,project,line_items,termsheets,events,decision,receipt
```

---

## MinIO (object storage for invoice / proforma files)

| Item | Value |
|---|---|
| S3 API endpoint | `localhost:9000` (from the API container: `minio:9000`) |
| Web console | http://localhost:9001 |
| Root user / password | `minioadmin` / `minioadmin` (dev — change for production) |
| Bucket | `procurement-files` (created automatically by the `minio-init` container) |
| Object key layout | `{quote_id}/{kind}/{attachment_id}` where kind = `invoice` \| `proforma` |

File **bytes** live in MinIO; the `quote_attachments` table holds the metadata.

Ad-hoc bucket inspection from the host (see `mc.cmd`):

```powershell
.\mc.cmd ls --recursive
```

---

## Database credentials / connection

```text
Host:     localhost
Port:     5433
Database: procurement
Username: postgres
Password: postgres
```

```powershell
docker exec -it procurement-postgres psql -U postgres -d procurement
```

---

## Common operations

```powershell
docker compose logs -f api          # see logs
docker compose down                 # stop (keep data)
docker compose up -d --build        # rebuild after code changes
docker compose down -v              # ⚠️ full reset — wipes DB + MinIO volumes
```

---

## Known behavior

- The backend has **no authentication** (dev placeholder) — do not expose to the public internet.
- Schema runs automatically ONLY on the first boot of an empty `postgres_data` volume
  (see `docker-entrypoint-initdb.d`); the API also runs `CREATE TABLE IF NOT EXISTS`
  for the units-dashboard tables and `quote_attachments` at startup.
- Invoice upload requires an `accepted`/`arrived` quote; proforma has no restriction.
- The supplier detail page (`/suppliers/:id`) shows the purchase history with
  invoice/proforma download links from MinIO.
- If builds fail with disk-full errors: `docker system prune -a`, then rebuild.
- If the frontend shows «اتصال به سرور برقرار نشد» → the api container is not
  reachable; check `docker compose ps` and `docker compose logs api`.