How rithik-hyperloop69/ecommerce-order-management works
1. Project shape
- This repo is a single-binary C application: one source file (FINAL_PROJECT.c), one generated data file (orders.txt), and one compiled executable (FINAL_PROJECT.exe).
- There are no separate packages, services, or libraries visible in the repo; the architecture is intentionally monolithic.
2. Primary runtime
- The system runs as a terminal/console program on Windows, Linux, or macOS.
- It is interactive and menu-driven: the user drives all workflows through standard input/output.
3. Core subsystem: order management
- The main domain entity is an Order record with fields for ID, customer name, product, quantity, price, and status.
- The application centers on CRUD-like operations, but with no delete path: add, list, search, update, save, and load.
4. In-memory state
- Orders are held in a fixed-size in-memory array, limited to 100 records.
- This array is the authoritative working set during a session; all display/search/update operations read from it.
5. User interface boundary
- The console menu is the presentation layer.
- It collects user commands and record fields, then hands them to the order logic; there is no GUI or web/API layer.
6. Validation and business rules
- Input validation is part of the business logic layer, not just formatting.
- The repo enforces unique numeric IDs, alphabetic customer names, constrained product names, integer quantity, decimal price, and an allowed status set: Pending, Shipped, Delivered, Cancelled.
7. Search and update flow
- Search is ID-based and retrieves a matching order from the in-memory array.
- Update follows a locate-then-replace pattern: the ID selects the record, then the full record is re-entered and overwritten in memory.
8. Persistence boundary
- Persistence is file-based and uses orders.txt as a lightweight backing store.
- The file is pipe-delimited, which makes it easy for the program to parse and rewrite without a database.
9. Startup and shutdown data flow
- On startup, the program loads saved orders from orders.txt into memory.
- During the session, changes remain in memory until the user explicitly saves them; exit does not imply automatic persistence unless save/load behavior in the source does so before termination.
10. External dependencies and infrastructure
- There are no external services, databases, or network calls.
- The only infrastructure dependency is a local filesystem for reading and writing orders.txt, plus a C compiler/runtime for building and running the app.
11. Architectural style
- The repo follows a classic single-file procedural design: menu dispatch, validation, record manipulation, and file I/O are all colocated in one program.
- For diagramming, the important boundaries are: user terminal, in-memory order store, and local text file persistence.
Main entry points: FINAL_PROJECT.c Menu Flow · FINAL_PROJECT.exe Executable · orders.txt orders.txt
Components 11
Application
Single-binary console program
- Console Menu · Terminal-based command and prompt interface
FINAL_PROJECT.c - Menu Flow · Routes choices into add, list, search, update, save, and load actions
FINAL_PROJECT.c - Validation · Checks IDs, names, quantities, prices, and allowed status values
FINAL_PROJECT.c - Order Logic · Creates, searches, updates, and displays order records
FINAL_PROJECT.c - Order Array · Fixed-size in-memory working set of up to 100 orders
FINAL_PROJECT.c - Lookup · Finds an order by numeric ID before display or update
FINAL_PROJECT.c - Update Flow · Re-enters a record and overwrites the matching order in memory
FINAL_PROJECT.c - File I/O · Loads and saves pipe-delimited order data
FINAL_PROJECT.c
Other components
- User · Drives the program through the console menu
- orders.txt · Local text backing store for persisted orders
orders.txt - Executable · Compiled console program
FINAL_PROJECT.exe
Connections 13
- User → Console Menu: enters commands · Interactive session via standard input/output
- Console Menu → Menu Flow: routes choice · Menu selection is dispatched to a workflow
- Menu Flow → Validation: checks input · Collects and validates record fields
- Menu Flow → Order Logic: executes action · Invokes add, list, search, update, save, and load behavior
- Order Logic → Order Array: reads/writes · Operates on the in-memory order array
- Order Logic → Lookup: locates record · Search uses the order ID to find a matching entry
- Lookup → Order Array: scans array · Searches the fixed-size working set
- Order Logic → Update Flow: replaces record · Update rewrites the located order in memory
- Update Flow → Order Array: overwrites entry · Stores the revised record back into the array
- Menu Flow → File I/O: load/save · Triggers startup load and explicit save operations
- File I/O → orders.txt: reads/writes · Uses the local pipe-delimited text file
- File I/O → Order Array: syncs data · Loads orders into memory and writes memory back to disk
- Executable → Console Menu: runs · Compiled artifact launches the console application