About This Project

An internal tool for factoring companies to manage invoice portfolios—load operations, track maturities, calculate daily discounts, and collect payments without spreadsheets or manual math.

Key Features:

• Factoring operations CRUD – Register invoices with client, payer, face value, issue date, due date, and monthly rate. Auto-computes days, discount, advance, and expected gain.


• Client & payer directory – Manage cedentes (sellers) and pagadores (debtors) with RUC normalization, fuzzy search, and duplicate detection via PostgreSQL trigram indexes.


• Live dashboard – Stat cards for total portfolio, pending amount, expected profit, and overdue count. Timeline view of the next 7 days of maturities.


• Smart operations listing – Ordered by due date, overdue rows highlighted in red, cursor-based pagination, and filter by status, date range, client, or payer.


• One-click collection – Mark invoices as collected with a single button; idempotent SQL guards prevent double-collection; revert supported for corrections.


• Interest report – Date-range interest earned report with summary stat cards, top-5 client breakdown, and streaming Excel export with styled headers and frozen panes.


• Secure attachments – Upload PDF, JPEG, PNG, or WebP files (magic-byte verified, 10 MiB cap) linked to operations with server-authed download and orphan janitor cleanup.


• Auth with no public signup – Better Auth email+password login; users created exclusively via admin CLI. Cookie-based sessions with Origin-check CSRF.


• Spanish-first UX – All copy in español rioplatense (es-AR), USD currency formatting, and editorial typography with Fraunces serif + Geist sans.


• Responsive & accessible – Mobile-first layout with shadcn/ui primitives, keyboard navigation, loading skeletons, and print-friendly detail pages.

Tech Stack:

• Frontend: Next.js 16 (App Router), React 19, Tailwind CSS 4, shadcn/ui (Radix primitives), Fraunces + Geist fonts


• Backend: Next.js Server Actions, PostgreSQL view for derived fields, decimal.js for exact money math (HALF_UP)


• Database: PostgreSQL 16 (clients, payers, operations, attachments, sessions, accounts)


• Auth: Better Auth, argon2id password hashing, cookie sessions, Origin-check CSRF middleware


• Validation: Zod schemas (zMoney, zPercent, zDate) + React Hook Form


• ORM & Migrations: Drizzle ORM + Drizzle Kit


• Excel Export: ExcelJS streaming WorkbookWriter


• Testing: Playwright e2e (happy-path), unit tests for factoring math and identity normalization


• Infra: Docker Compose (multi-stage Dockerfile), nginx reverse proxy, Cloudflare TLS, nightly pg_dump backups, predeploy grep gate

Goal:
Ship a reliable, self-contained factoring operations system that a single operator can run end-to-end—load invoices, track maturities, collect payments, and generate reports—with zero external dependencies beyond PostgreSQL and a browser.