Accounting Suite (Enterprise Edition)

🔰 Week 1 – Foundation & Core Setup

Day 1: Project Initialization

Create solution:

• Accounting.API (ASP.NET 10 Web API)

• Accounting.UI (Blazor Hybrid)

• Accounting.Domain, Accounting.Infrastructure

• Configure base architecture (Clean/Onion pattern).

• Setup Git & GitHub.

Day 2: Database Design

• Draw ER diagram (Company, Customer, Vendor, Item, Invoice, Expense, Payment, Tax, Role, User, Audit).
• Configure SQL Server + EF Core Code-First.
• Run first migration & seed Roles + Admin user.

Day 3: Authentication & Roles

• JWT-based login & refresh token.
• Role claims: Admin, Accountant, Sales, Auditor.
• Build middleware for Role authorization.

Day 4: Masters Module – Company & Tax

• CRUD APIs for: Company (single record), Tax Rates, Number Series.
• Validation for effective dates & usage rules.

Day 5: Masters Module – Customers & Vendors

• CRUD + Archive/Inactive logic.
• Audit trail on every create/update/delete.

Day 6: Items/Services Master

• CRUD for Items (Name, HSN/SAC, default Tax, Unit, Type).

• Auto tax binding on invoice line add.
  Day 7: Blazor Hybrid UI Setup

• Blazor layout with sidebar navigation.

• Authentication integration (JWT token storage).

• Dashboard placeholder.

💼 Week 2 – Invoice & Income (Core Accounting)
Day 8: Invoice Draft API

• Draft create/edit: customer, date, lines, tax logic (IGST/CGST/SGST).
• Round-off & grand total calculation service.

Day 9: Invoice Issue Flow

• Lock number/date via Number Series service.
• Generate PDF using QuestPDF.
• Store PDF path + status = “Issued”.

Day 10: Email & PDF Delivery

• Configure SMTP (Gmail/Outlook).
• Auto-email issued invoices with HTML template.
• Store send log table.

Day 11: Receipt (Income) Module

• API: record receipt, link to invoice, update balance.
• Handle Partially Paid/Paid logic.
• Add proof attachment option.

Day 12: Income Register & Reports

• List receipts with filters (customer/date/mode).
• Dashboard cards: Total Income, Pending Balance.

Day 13: Cancellation & Clone

• Cancel issued invoice (keep number/date, reverse ledger).
• Clone existing invoice to new draft.

Day 14: Testing & Blog #1

• Postman test all Income/Invoice APIs.

• Publish Dev.to: “Week 1-2 – Building Core Accounting Engine in .NET 10 + Blazor”.
  💰 Week 3 – Expenses, Vendors, and Recurring AMC
  Day 15: Expense (Bill) Module

• Create Draft → Approve → Paid flow.

• Expense lines with optional GST.

• Attach vendor bills (PDF/JPG).

Day 16: Vendor Payment

• Link expense, record payment (amount/mode/date).
• Reduce payable; update Expense status.

Day 17: Recurring (AMC) Plan Setup

• Plan creation: Customer, Start Date, Frequency, Base Amount, Escalation %.
• Next Invoice Date auto-calculate.

Day 18: Recurring Engine

• Background service (Hosted Service) checks daily for due plans.
• Auto-create draft invoices.
• Notify accountant via email.

Day 19: Report Generation

• GST Summary, Income vs Expense, Ageing (AR/AP).
• Data aggregation queries.
• Export CSV/XLSX.

Day 20: Ledger & Balances

• Unified Ledger table (Customer AR / Vendor AP).
• Update automatically from Invoice, Receipt, Expense, Payment.

Day 21: Testing & Blog #2

• Validate totals, taxes, rounding.

• Publish Dev.to: “Week 3 – Building Smart Recurring & Expense Automation in .NET 10 ERP”.
  ⚙️ Week 4 – Audit, Attachments, Security & Optimization
  Day 22: Attachments & Audit Module

• Generic attachment service (entityId + type + path).

• Audit trail: who/when/what for create/update/delete/issue.

Day 23: Validation & Error Flow

• FluentValidation for DTOs.
• Friendly error responses (field-level).

Day 24: Month Close & Lock Mechanism

• Add period lock: prevent edits/deletes after month close.
• Show warning messages for locked data.

Day 25: Performance & Caching

• Add in-memory caching for master data (Tax, Company).
• Optimize EF Core queries, use projection DTOs.

Day 26: Security & Concurrency

• RowVersion concurrency control.
• CORS, XSS, CSRF protection.

Day 27: UI Enhancement

Blazor pages:

• Dashboard (cards + charts)
• Invoice list/detail
• Expense list/detail
• Reports (interactive charts)

Day 28: Unit Tests & Logging

• xUnit for key services (Invoice, Receipt).
• Serilog setup (File + DB sink).

Day 29: Deployment

• Host API (IIS/Azure).
• Deploy Blazor Hybrid as Windows App.

Day 29: Deployment

Host API (IIS/Azure).

Deploy Blazor Hybrid as Windows App.

Configure environment variables (connection strings, mail).

Day 30: Final QA & Publication

• End-to-end testing across flows.
• Verify audit, PDF, email.
• Write Dev.to Final Blog:

“💼 Building a Full Accounting Suite in .NET 10 + Blazor Hybrid – 30 Days, 30 Modules”

Push final code & docs to GitHub.

📦 Deliverables

✅ Full Source Code (.NET 10 + Blazor Hybrid + SQL)
✅ Postman Collection
✅ Sample PDFs (Invoice, Receipt)
✅ ER Diagram + Flowchart
✅ Dev.to Blog Series (Week 1–4)
✅ Documentation (API + Setup Guide)

Configure environment variables (connection strings, mail).

Day 30: Final QA & Publication

End-to-end testing across flows.

Verify audit, PDF, email.

Write Dev.to Final Blog:

“💼 Building a Full Accounting Suite in .NET 10 + Blazor Hybrid – 30 Days, 30 Modules”

Push final code & docs to GitHub.

📦 Deliverables

✅ Full Source Code (.NET 10 + Blazor Hybrid + SQL)
✅ Postman Collection
✅ Sample PDFs (Invoice, Receipt)
✅ ER Diagram + Flowchart
✅ Dev.to Blog Series (Week 1–4)
✅ Documentation (API + Setup Guide)