aziz00legend/Cambiale-Lettre-de-Change-Management-Print-System

A full-stack enterprise application for managing and printing Lettres de Change (Bills of Exchange) — financial instruments used in Tunisian banking and commercial operations. # 📄 Cambiale — Lettre de Change Management & Print System A full-stack enterprise application for managing and printing **Lettres de Change** (Bills of Exchange) — financial instruments used in Tunisian banking and commercial operations. --- ## 📌 Overview This system digitizes and automates the complete lifecycle of a Lettre de Change: from issuing and managing bank/subsidiary/account structures, to creating cambiale records with full relational data, previewing them overlaid on the official PDF template, and triggering a tracked one-time print. --- ## 🧩 Features ### 🏦 Bank Hierarchy Management - Full CRUD for **Banks**, **Subsidiary Banks**, and **Comptes (Accounts)** - Hierarchical drill-down: Bank → Subsidiary → Compte, navigated via full-screen sidebars - Code-immutability enforcement on edit (bank codes and subsidiary codes are locked after creation) - **RIB validation** with modulo-97 checksum verification during compte creation ### 👥 Beneficiary Management - Manage drawer / pay-to-order-of pairs used on cambiale documents - Live search/filter across all beneficiaries ### 📋 Cambiale Management - Create cambiales with: amount, operation date, protestable flag, creation location (Tunisian governorate), donor account, and beneficiary - Full detail view with collapsible panels: Bank Info, Subsidiary Info, Beneficiary Info, Donor Info - Soft-delete protection: printed cambiales cannot be deleted - Governorate-aware autocomplete for creation location ### 🖨️ PDF Generation & Print - **Preview mode**: loads the official *Lettre de Change* PDF template and overlays all dynamic fields (RIB, names, dates, amounts, locations) using `pdf-lib` — no server round-trip - **Print mode**: generates a data-only PDF and sends it to the browser print dialog - **Amount in letters** field auto-populated by the backend - Print tracking: once printed, the cambiale is marked `isPrinted = true`, locking further prints and deletion - Zoom and page navigation controls in the PDF …