Initial commit

src-tauri/Cargo.toml

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+[package]
+name = "bkbh"
+version = "0.1.0"
+description = "A Tauri App"
+authors = ["Bianca Fürstenau"]
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+# The `_lib` suffix may seem redundant but it is necessary
+# to make the lib name unique and wouldn't conflict with the bin name.
+# This seems to be only an issue on Windows, see https://github.com/rust-lang/cargo/issues/8519
+name = "bkbh_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+
+[dependencies]
+tauri = { version = "2", features = [] }
+tauri-plugin-opener = "2"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+rusqlite = {version = "^0.33", features = ["backup", "bundled"] }
+rand = {version = "^0.9"}
+chrono = {version = "^0.4"}
+tokio = {version = "^1.43"}

src-tauri/build.rs

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+fn main() {
+    tauri_build::build()
+}

src-tauri/src/lib.rs

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+use rusqlite::{Connection, ToSql, types::ToSqlOutput};
+use rand::prelude::*;
+use tokio::sync::Mutex;
+use tauri::{Manager, State};
+use chrono::offset::Utc;
+
+struct AppState {
+	db: Connection,
+	acc: i64,
+}
+
+#[derive(Clone, Copy)]
+enum Store {
+	Aldi,
+	Rewe,
+}
+
+impl TryFrom<&str> for Store {
+	type Error = ();
+
+	fn try_from(s: &str) -> Result<Self, Self::Error> {
+		match s {
+			"aldi" => Ok(Store::Aldi),
+			"rewe" => Ok(Store::Rewe),
+			_ => Err(()),
+		}
+	}
+}
+
+impl ToSql for Store {
+	fn to_sql(&self) -> rusqlite::Result<ToSqlOutput<'_>> {
+		match self {
+			Store::Aldi => 0.to_sql(),
+			Store::Rewe => 1.to_sql(),
+		}
+	}
+}
+
+// Learn more about Tauri commands at https://tauri.app/develop/calling-rust/
+#[tauri::command]
+async fn swap(store: &str, state: State<'_, Mutex<AppState>>) -> Result<(), ()> {
+	let state = state.lock().await;
+	let mut rng = rand::rng();
+	let store: Store = store.try_into()?;
+	state.db.execute(
+		"INSERT INTO swap VALUES (?1, ?2, ?3, ?4, ?5)",
+		(
+			rng.random::<i64>(),
+			store,
+			state.acc,
+			Utc::now().timestamp(),
+			false,
+		),
+	).map_err(|_| ())?;
+	Ok(())
+}
+
+#[tauri::command]
+async fn count(state: State<'_, Mutex<AppState>>) -> Result<String, ()> {
+	let state = state.lock().await;
+	let mut stmt = state.db.prepare("SELECT COUNT(*) FROM swap").unwrap();
+	let mut rows = stmt.query([]).unwrap();
+	let row = rows.next().unwrap().unwrap();
+	let cnt: u64 = row.get_unwrap(0);
+	Ok(cnt.to_string())
+}
+
+#[cfg_attr(mobile, tauri::mobile_entry_point)]
+pub fn run() {
+	let mut rng = rand::rng();
+	let db = Connection::open_in_memory().expect("Failed to create DB.");
+	let acc = rng.random::<i64>();
+	db.execute(
+		"CREATE TABLE swap (
+			rand INTEGER,
+			store INTEGER,
+			account INTEGER,
+			time INTEGER,
+			cancellation BOOL
+		)",
+		(),
+	).unwrap();
+	let state = AppState { db, acc };
+	tauri::Builder::default()
+		.setup(|app| {app.manage(Mutex::new(state)); Ok(())})
+		.plugin(tauri_plugin_opener::init())
+		.invoke_handler(tauri::generate_handler![swap, count])
+		.run(tauri::generate_context!())
+		.expect("error while running tauri application");
+}

src-tauri/src/main.rs

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+// Prevents additional console window on Windows in release, DO NOT REMOVE!!
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
+fn main() {
+    bkbh_lib::run()
+}

src-tauri/tauri.conf.json

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+{
+  "$schema": "https://schema.tauri.app/config/2",
+  "productName": "bkbh",
+  "version": "0.1.0",
+  "identifier": "de.mathebau.bkbh",
+  "build": {
+    "frontendDist": "../src"
+  },
+  "app": {
+    "withGlobalTauri": true,
+    "windows": [
+      {
+        "title": "bkbh",
+        "width": 800,
+        "height": 600
+      }
+    ],
+    "security": {
+      "csp": null
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": "all",
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ]
+  }
+}