# zainbaig313/automatedinvoicesystem architecture

> Architecture diagram of the GitHub repository zainbaig313/automatedinvoicesystem, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-12). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/zainbaig313/automatedinvoicesystem
- Repository: https://github.com/zainbaig313/automatedinvoicesystem

## Overview

InvoiceFlow is an invoice-management API: an account owner manages clients and invoices, sends invoices to customers, and tracks payment proofs through review. Customers can access invoices through public payment links; the application also generates invoice PDFs and monthly reports, sends email reminders, and supports user authentication. The graph highlights controllers, service responsibilities, persistence, and scheduled/email integrations. The README is empty, so capabilities and connections are based on the source index and sampled code; unverified HTTP entry points are shown as dashed.

Main entry points: [`Data/ApplicationDbContext.cs`](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Data/ApplicationDbContext.cs) (Application database), [`Services/InvoiceService.cs`](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/InvoiceService.cs) (Invoice processing), [`Services/EmailService.cs`](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/EmailService.cs) (Invoice email), [`Controllers/PublicInvoiceController.cs`](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/PublicInvoiceController.cs) (Public invoice API)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_api["API surface"]
  node_client_api["Client API"]
  node_invoice_api["Invoice API"]
  node_public_api["Public invoice API"]
  node_proof_api["Payment proof API"]
  node_user_api["User API<br/>[UserController.cs]"]
  node_auth_base["User identity helper"]
end

subgraph group_services["Application services"]
  node_client_service["Client management<br/>[ClientService.cs]"]
  node_invoice_service["Invoice processing<br/>[InvoiceService.cs]"]
  node_proof_service["Proof review"]
  node_user_service["User accounts<br/>[UserService.cs]"]
  node_jwt_service["JWT handling<br/>[JwtService.cs]"]
end

subgraph group_domain["Domain and persistence"]
  node_domain_models["Business entities"]
  node_database[("Application database")]
end

subgraph group_operations["Background and integrations"]
  node_email_service["Invoice email<br/>[EmailService.cs]"]
  node_reminder_job["Reminder scheduler<br/>[ReminderJob.cs]"]
end

node_owner(("Account owner"))
node_customer(("Invoice customer"))
node_smtp["SMTP server"]
node_sql_server[("SQL Server")]

node_owner -.->|"manages clients"| node_client_api
node_owner -.->|"manages invoices"| node_invoice_api
node_customer -.->|"views invoice"| node_public_api
node_customer -.->|"submits proof"| node_proof_api
node_client_api -->|"delegates to"| node_client_service
node_invoice_api -->|"delegates to"| node_invoice_service
node_public_api -->|"requests invoice"| node_invoice_service
node_public_api -->|"handles proof"| node_proof_service
node_proof_api -->|"delegates to"| node_proof_service
node_user_api -->|"delegates to"| node_user_service
node_client_service -->|"reads and writes"| node_database
node_invoice_service -->|"reads and writes"| node_database
node_proof_service -->|"reads and writes"| node_database
node_user_service -->|"reads and writes"| node_database
node_user_service -->|"uses tokens"| node_jwt_service
node_invoice_service -->|"sends invoice"| node_email_service
node_email_service -->|"sends email"| node_smtp
node_email_service -->|"generates PDF"| node_invoice_service
node_reminder_job -->|"queries invoices"| node_database
node_reminder_job -->|"sends reminders"| node_email_service
node_database -->|"persists data"| node_sql_server

click node_client_api "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/ClientController.cs"
click node_invoice_api "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/InvoiceController.cs"
click node_public_api "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/PublicInvoiceController.cs"
click node_proof_api "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/PaymentProofController.cs"
click node_user_api "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/UserController.cs"
click node_auth_base "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/AuthorizedControllerBase.cs"
click node_client_service "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/ClientService.cs"
click node_invoice_service "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/InvoiceService.cs"
click node_proof_service "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/PaymentProofService.cs"
click node_user_service "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/UserService.cs"
click node_jwt_service "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/JwtService.cs"
click node_email_service "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/EmailService.cs"
click node_reminder_job "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/ReminderJob.cs"
click node_domain_models "https://github.com/zainbaig313/automatedinvoicesystem/tree/main/Models/Entities"
click node_database "https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Data/ApplicationDbContext.cs"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_client_api,node_invoice_api,node_public_api,node_proof_api,node_user_api,node_auth_base toneBlue
class node_client_service,node_invoice_service,node_proof_service,node_user_service,node_jwt_service,node_sql_server toneAmber
class node_domain_models,node_database,node_smtp toneMint
class node_email_service,node_reminder_job toneRose
class node_owner,node_customer toneIndigo
```

## Components

### API surface

- [Client API](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/ClientController.cs): `Controllers/ClientController.cs`
- [Invoice API](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/InvoiceController.cs): `Controllers/InvoiceController.cs`
- [Public invoice API](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/PublicInvoiceController.cs): `Controllers/PublicInvoiceController.cs`
- [Payment proof API](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/PaymentProofController.cs): `Controllers/PaymentProofController.cs`
- [User API](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/UserController.cs): `Controllers/UserController.cs`
- [User identity helper](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Controllers/AuthorizedControllerBase.cs): `Controllers/AuthorizedControllerBase.cs`

### Application services

- [Client management](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/ClientService.cs): `Services/ClientService.cs`
- [Invoice processing](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/InvoiceService.cs): `Services/InvoiceService.cs`
- [Proof review](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/PaymentProofService.cs): `Services/PaymentProofService.cs`
- [User accounts](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/UserService.cs): `Services/UserService.cs`
- [JWT handling](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/JwtService.cs): `Services/JwtService.cs`

### Domain and persistence

- [Business entities](https://github.com/zainbaig313/automatedinvoicesystem/tree/main/Models/Entities): `Models/Entities`
- [Application database](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Data/ApplicationDbContext.cs): `Data/ApplicationDbContext.cs`

### Background and integrations

- [Invoice email](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/EmailService.cs): `Services/EmailService.cs`
- [Reminder scheduler](https://github.com/zainbaig313/automatedinvoicesystem/blob/main/Services/ReminderJob.cs): `Services/ReminderJob.cs`

### Other components

- **Account owner**
- **Invoice customer**
- **SMTP server**
- **SQL Server**

## Connections

- Account owner → Client API: manages clients
- Account owner → Invoice API: manages invoices
- Invoice customer → Public invoice API: views invoice
- Invoice customer → Payment proof API: submits proof
- Client API → Client management: delegates to (evidence: `Controllers/ClientController.cs`)
- Invoice API → Invoice processing: delegates to (evidence: `Controllers/InvoiceController.cs`)
- Public invoice API → Invoice processing: requests invoice (evidence: `Controllers/PublicInvoiceController.cs`)
- Public invoice API → Proof review: handles proof (evidence: `Controllers/PublicInvoiceController.cs`)
- Payment proof API → Proof review: delegates to (evidence: `Controllers/PaymentProofController.cs`)
- User API → User accounts: delegates to (evidence: `Controllers/UserController.cs`)
- Client management → Application database: reads and writes (evidence: `Services/ClientService.cs`)
- Invoice processing → Application database: reads and writes (evidence: `Services/InvoiceService.cs`)
- Proof review → Application database: reads and writes (evidence: `Services/PaymentProofService.cs`)
- User accounts → Application database: reads and writes (evidence: `Services/UserService.cs`)
- User accounts → JWT handling: uses tokens (evidence: `Services/UserService.cs`)
- Invoice processing → Invoice email: sends invoice (evidence: `Services/InvoiceService.cs`)
- Invoice email → SMTP server: sends email (evidence: `Services/EmailService.cs`)
- Invoice email → Invoice processing: generates PDF (evidence: `Services/EmailService.cs`)
- Reminder scheduler → Application database: queries invoices (evidence: `Services/ReminderJob.cs`)
- Reminder scheduler → Invoice email: sends reminders (evidence: `Services/ReminderJob.cs`)
- Application database → SQL Server: persists data