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ticketsystem/README.md
schn33fuchs d1576ae8fa For real real
2026-05-22 15:14:16 +02:00

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# Ticketsystem
A ticket system with backend and frontend components.
## Components
- **[Backend]** - The server-side API and business logic
- **[Frontend]** - The client-side user interface
## Usage
### Prerequisite
> [!IMPORTANT]
> Before compiling the programm you have to install the rust toolchain.
> For a guide to do this, visit: <https://rust-lang.org/tools/install/>
A instance of a postgresql has to be accessible to the backend. Place the connection details in a .env file into the variable `DATABASE_URL`
To setup the tables you either can create them manually by following the sheme specified in `backend/migrations` or apply them with sqlx
To install sqlx run `cargo install sqlx` and then in the `backend` directory run `sqlx migrate run` to create the tables
### Environment
The .env file has to be in the root directory of the project or in the same directory as the executable
Keys:
`DATABASE_URL`: Specifying the url and connection details for the database
`TOKEN_SECRET`: The JWT token secret, can theoretically be anything but is more secure when generated with a tool, e.g: <https://jwtsecrets.com/>
`ORIGIN`: The origin of the frontend, used for CORS rules
`BACKEND_PORT`: The port which the backend should use to run on
### Backend
The backend can either be run via `cargo run --release` or `cargo build --release` using the correct target architecture, e.g. 'x86_64-unknown-linux-gnu',
the executable will be placed in the `target/release` directory and can then be run via any method
### Frontend
The HTML code for the frontend can be generated by using `trunk build`. The resulting files will end up in the `frontend/dist` directory and can be served over any webserver supporting wasm
> [!NOTE]
> To install trunk run `cargo install trunk`
> [!IMPORTANT]
> Requests from the frontend to /api/* have to be proxied to the Backend
> Example with nginx and frontend running at localhost:8000 and backend at localhost:9000 :
> ```nginx
> location /api/ {
> proxy_pass http://localhost:9000/api;
> }
> ```
## Diagrams
### Class Diagramm
```mermaid
classDiagram
direction RL
class backend_src_cookie_Error {
+status: &'static str
+message: String
}
class backend_src_TicketResponse {
+id: i32
+category: String
+betreff: String
+description: String
+room: i16
+status: String
+date: chrono::DateTime~chrono::Utc~
+user_id: i16
+user_first_name: String
+user_last_name: String
}
class backend_src_User {
+id: i16
+last_name: String
+first_name: String
+username: String
+is_admin: bool
+pwd: String
}
class backend_src_TicketCreateScheme {
+category: String
+betreff: String
+description: String
+room: i16
}
class backend_src_TicketUpdateScheme {
+status: String
}
class backend_src_UserUpdateScheme {
+id: i16
+first_name: String
+last_name: String
+username: String
+make_admin: bool
+new_pwd: String
}
class backend_src_UserCreateScheme {
+first_name: String
+last_name: String
+username: String
+is_admin: bool
+pwd: String
}
class backend_src_LoginScheme {
+username: String
+pwd: String
}
class backend_src_FilteredUser {
+id: i16
+first_name: String
+last_name: String
+username: String
+is_admin: bool
}
class backend_src_Claims {
+sub: String
+issued: usize
+expires: usize
}
class backend_src_AppState {
-db: PgPool
-env: backend_src_Env
}
class backend_src_Env {
+db_url: String
+token_secret: String
+origin: String
+backend_port: String
+load() backend_src_Env
}
class backend_target_debug_build_chrono-tz-56cec396bfb3cea1_out_FromStr {
+from_str(s:&str) Result~Self, Self::Err~
}
class backend_target_debug_build_chrono-tz-56cec396bfb3cea1_out_Tz {
+name() &'static str
}
class backend_target_debug_build_chrono-tz-56cec396bfb3cea1_out_Debug {
+fmt(f:&mut Formatter) fmt::Result
}
class backend_target_debug_build_chrono-tz-56cec396bfb3cea1_out_Display {
+fmt(f:&mut Formatter) fmt::Result
}
class backend_target_debug_build_chrono-tz-56cec396bfb3cea1_out_TimeSpans {
+timespans() FixedTimespanSet
}
class backend_target_debug_build_chrono-tz-261584f9cc573a32_out_FromStr {
+from_str(s:&str) Result~Self, Self::Err~
}
class backend_target_debug_build_chrono-tz-261584f9cc573a32_out_Tz {
+name() &'static str
}
class backend_target_debug_build_chrono-tz-261584f9cc573a32_out_Debug {
+fmt(f:&mut Formatter) fmt::Result
}
class backend_target_debug_build_chrono-tz-261584f9cc573a32_out_Display {
+fmt(f:&mut Formatter) fmt::Result
}
class backend_target_debug_build_chrono-tz-261584f9cc573a32_out_TimeSpans {
+timespans() FixedTimespanSet
}
class frontend_src_pages_TicketCreateScheme {
+category: String
+betreff: String
+description: String
+room: i16
}
class frontend_src_pages_TicketUpdateScheme {
+status: String
}
class frontend_src_pages_Ticket {
+id: i32
+category: String
+betreff: String
+description: String
+room: i16
+status: String
+date: chrono::DateTime~chrono::Utc~
+user_id: i16
+user_first_name: String
+user_last_name: String
}
class frontend_src_pages_TicketProps {
+id: i32
}
class frontend_src_pages_ActiveUser {
+id: Option~i16~
+is_admin: bool
}
class frontend_src_pages_ApiError {
-message: String
-_status: String
}
class frontend_src_pages_SidebarExpandState {
+ticket_open: bool
+users_open: bool
}
class frontend_src_pages_Default {
+default() Self
}
class frontend_src_pages_SidebarState {
+expand: frontend_src_pages_SidebarExpandState
+set_tickets_open: Callback~bool~
+toggle_tickets: Callback~()~
+set_users_open: Callback~bool~
+toggle_users: Callback~()~
+new(expand:frontend_src_pages_SidebarExpandState, set_tickets_open:Callback~bool~, toggle_tickets:Callback~()~, set_users_open:Callback~bool~, toggle_users:Callback~()~) Self
}
class frontend_src_pages_SidebarProps {
+children: Children
}
class frontend_src_pages_TicketPartial {
-date: DateTime~Utc~
-room: i16
-user_id: i16
}
class frontend_src_pages_UserPartial {
-id: i16
-first_name: String
-last_name: String
}
class frontend_src_pages_RoomTotalsProps {
-tickets: Vec~frontend_src_pages_TicketPartial~
}
class frontend_src_pages_UserTotalProps {
-users: Vec~frontend_src_pages_UserPartial~
-tickets: Vec~frontend_src_pages_TicketPartial~
}
class frontend_src_pages_AdminSetupScheme {
+first_name: String
+last_name: String
+username: String
+pwd: String
}
class frontend_src_pages_UserCreateScheme {
+first_name: String
+last_name: String
+username: String
+is_admin: bool
+pwd: String
}
class frontend_src_pages_LoginScheme {
+username: String
+pwd: String
}
class frontend_src_pages_UserUpdateScheme {
+id: i16
+first_name: String
+last_name: String
+username: String
+make_admin: bool
+new_pwd: String
}
class frontend_src_pages_FilteredUser {
+id: i16
+first_name: String
+last_name: String
+username: String
+is_admin: bool
}
class frontend_src_pages_UserProps {
+id: i16
}
class frontend_src_pages_ApiError {
-message: String
-_status: String
}
class frontend_src_AuthState {
+is_authenticated: Option~bool~
+is_admin: Option~bool~
}
class frontend_src_ProtectedRouteProps {
+children: Children
+admin_page: bool
}
class frontend_src_SidebarShellProps {
+children: Children
}
class frontend_src_AdminCheckWrapperProps {
+children: Children
}
backend_src_AppState --> backend_src_Env
backend_src_Env ..> backend_src_Env
frontend_src_pages_SidebarState --> frontend_src_pages_SidebarExpandState
frontend_src_pages_RoomTotalsProps --> frontend_src_pages_TicketPartial
frontend_src_pages_UserTotalProps --> frontend_src_pages_UserPartial
frontend_src_pages_UserTotalProps --> frontend_src_pages_TicketPartial
```
### Sequence Diagrams
#### 1. System Initialization & Administrator Setup
```mermaid
sequenceDiagram
autonumber
actor Admin as Initial Administrator
participant FE as Frontend (Yew)
participant BE as Backend (Axum)
participant DB@{"type": "database", "alias": "Database"}
Note over Admin, DB: System Initialization Flow
FE->>BE: GET /api/check-admin
BE->>DB: SELECT COUNT(*) FROM users WHERE is_admin = true
DB-->>BE: 0 (No admin found)
BE-->>FE: HTTP 200 OK {"exists": false}
FE-->>Admin: Render Admin Setup Page
Admin->>FE: Input username, password, first/last name
FE->>BE: POST /api/setup-admin {username, pwd, ...}
Note over BE: Hash password using Argon2
BE->>DB: INSERT INTO users (username, pwd, is_admin, ...)
DB-->>BE: Success
BE-->>FE: HTTP 200 OK {"status": "success"}
FE-->>Admin: Redirect to Login Page
```
#### 2. User Authentication Flow (Login)
```mermaid
sequenceDiagram
autonumber
actor User
participant FE as Frontend (Yew)
participant BE as Backend (Axum)
participant DB as Database@{"type": "database"}
Note over User, DB: Authentication & Cookie Session Setup
User->>FE: Enter username & password
FE->>BE: POST /api/login {username, pwd}
BE->>DB: SELECT * FROM users WHERE username = $1
DB-->>BE: Return user record with password hash
Note over BE: Verify password using Argon2
alt Password Valid
Note over BE: Generate JWT token containing claims (sub: user_id)
Note over BE: Build HttpOnly, Secure, Lax cookie 'token'
BE-->>FE: HTTP 200 OK {"status": "success", "token": "...", "user": {...}}
Note over BE,FE: Header: Set-Cookie: token=...#59; Path=/#59; HttpOnly#59; SameSite=Lax
Note over FE: Save auth state to global context
FE-->>User: Redirect to Dashboard / Home
else Password Invalid
BE-->>FE: HTTP 400 Bad Request {"status": "error", "message": "Invalid password"}
FE-->>User: Display error message
end
```
#### 3. Ticket Lifecycle Flow
```mermaid
sequenceDiagram
autonumber
actor User as Authenticated User
actor Admin as Administrator
participant FE as Frontend (Yew)
participant BE as Backend (Axum)
participant DB as Database@{"type": "database"}
Note over User, DB: Ticket Creation Flow (Protected Route)
User->>FE: Fill out ticket form & submit
FE->>BE: POST /api/tickets/create {category, betreff, description, room} (Includes 'token' cookie)
Note over BE: validate_token middleware decodes & verifies JWT
BE->>DB: INSERT INTO tickets (category, description, betreff, room, user_id)
DB-->>BE: Success
BE-->>FE: HTTP 200 OK {"status": "success"}
FE-->>User: Clear form & display success notification
Note over Admin, DB: Ticket Review & Resolution (Admin Only Route)
Admin->>FE: View Ticket Board
FE->>BE: GET /api/tickets (Includes 'token' cookie)
Note over BE: validate_token middleware checks JWT
BE->>DB: SELECT tickets JOIN users ...
DB-->>BE: Return list of tickets
BE-->>FE: HTTP 200 OK [tickets]
FE-->>Admin: Render Ticket List
Admin->>FE: Click "Resolve" on ticket
FE->>BE: PATCH /api/tickets/{id} {"status": "Resolved"} (Includes 'token' cookie)
Note over BE: validate_admin middleware verifies token & checks is_admin = true
BE->>DB: UPDATE tickets SET status = $1 WHERE id = $2
DB-->>BE: Success
BE-->>FE: HTTP 200 OK {"status": "success"}
FE-->>Admin: Update ticket status in UI
```
## Usage of AI
Github Copilot CLI was used with the model Claude Haiku 4.5 to generate most of the documentation
Google Antigravity generated the Sequence Diagrams
### Prompt
Generate comments for cargo doc describing the indivilual components and create links to relevant structs, functions etc.
Generate a sequence diagramm in @[README.md] behind the class diagramms
### Output
The comments with `///` or `//!`
I've gone over most of it and modified it to my needs and opinions
The sequence Diagrams above
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