feat: Tauri commands — encode/export/history CRUD

gui/src/lib.rs

@@ -1,6 +1,106 @@
+use qr_core::qr::{QrCode, QrConfig, VersionMode};
+use qr_core::version::EcLevel;
+use serde::{Deserialize, Serialize};
+use std::sync::Mutex;
+
+/// QR 编码响应
+#[derive(Debug, Serialize, Clone)]
+struct QrResponse {
+    svg: String,
+    version: u8,
+    size: u8,
+    mask: u8,
+}
+
+/// 历史记录条目
+#[derive(Debug, Serialize, Deserialize, Clone)]
+struct HistoryEntry {
+    id: String,
+    mode: String,
+    content: String,
+    timestamp: u64,
+}
+
+/// 应用状态
+struct AppState {
+    history: Mutex<Vec<HistoryEntry>>,
+}
+
+/// 编码 QR 码，返回 SVG + 元信息
 #[tauri::command]
-fn greet(name: &str) -> String {
-    format!("你好, {}! QRGen GUI 已就绪。", name)
+fn encode_qr(text: String, level: String, margin: u8) -> Result<QrResponse, String> {
+    let ec_level = match level.to_uppercase().as_str() {
+        "L" => EcLevel::L,
+        "M" => EcLevel::M,
+        "Q" => EcLevel::Q,
+        "H" => EcLevel::H,
+        _ => return Err(format!("无效纠错级别: {}", level)),
+    };
+
+    let config = QrConfig {
+        level: ec_level,
+        version: VersionMode::Auto,
+        margin,
+    };
+
+    let qr = QrCode::encode(&text, config).map_err(|e| format!("编码失败: {}", e))?;
+
+    let svg = qr.to_svg();
+
+    Ok(QrResponse {
+        svg,
+        version: qr.version.0,
+        size: qr.size(),
+        mask: qr.mask,
+    })
+}
+
+/// 导出 PNG bytes
+#[tauri::command]
+fn export_png(text: String, level: String, margin: u8, module_size: u8) -> Result<Vec<u8>, String> {
+    let ec_level = match level.to_uppercase().as_str() {
+        "L" => EcLevel::L,
+        "M" => EcLevel::M,
+        "Q" => EcLevel::Q,
+        "H" => EcLevel::H,
+        _ => return Err(format!("无效纠错级别: {}", level)),
+    };
+
+    let config = QrConfig {
+        level: ec_level,
+        version: VersionMode::Auto,
+        margin,
+    };
+
+    let qr = QrCode::encode(&text, config).map_err(|e| format!("编码失败: {}", e))?;
+
+    Ok(qr.to_png_bytes(module_size))
+}
+
+/// 保存历史记录条目
+#[tauri::command]
+fn save_history(state: tauri::State<AppState>, entry: HistoryEntry) -> Result<(), String> {
+    let mut history = state.history.lock().map_err(|e| e.to_string())?;
+    history.push(entry);
+    if history.len() > 50 {
+        history.remove(0);
+    }
+    Ok(())
+}
+
+/// 加载全部历史记录
+#[tauri::command]
+fn load_history(state: tauri::State<AppState>) -> Result<Vec<HistoryEntry>, String> {
+    let history = state.history.lock().map_err(|e| e.to_string())?;
+    Ok(history.clone())
+}
+
+/// 清空历史记录
+#[tauri::command]
+fn clear_history(state: tauri::State<AppState>) -> Result<(), String> {
+    let mut history = state.history.lock().map_err(|e| e.to_string())?;
+    history.clear();
+    Ok(())
 }
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
@@ -9,7 +109,16 @@ pub fn run() {
         .plugin(tauri_plugin_store::Builder::new().build())
         .plugin(tauri_plugin_dialog::init())
         .plugin(tauri_plugin_clipboard_manager::init())
-        .invoke_handler(tauri::generate_handler![greet])
+        .manage(AppState {
+            history: Mutex::new(Vec::new()),
+        })
+        .invoke_handler(tauri::generate_handler![
+            encode_qr,
+            export_png,
+            save_history,
+            load_history,
+            clear_history,
+        ])
         .run(tauri::generate_context!())
         .expect("启动 QRGen GUI 失败");
 }