Decouple core Yaak logic from Tauri (#354)

crates-tauri/yaak-tauri-utils/src/api_client.rs

@@ -0,0 +1,24 @@
+use crate::error::Result;
+use reqwest::Client;
+use std::time::Duration;
+use tauri::http::{HeaderMap, HeaderValue};
+use tauri::{AppHandle, Runtime};
+use yaak_common::platform::{get_ua_arch, get_ua_platform};
+
+pub fn yaak_api_client<R: Runtime>(app_handle: &AppHandle<R>) -> Result<Client> {
+    let platform = get_ua_platform();
+    let version = app_handle.package_info().version.clone();
+    let arch = get_ua_arch();
+    let ua = format!("Yaak/{version} ({platform}; {arch})");
+    let mut default_headers = HeaderMap::new();
+    default_headers.insert("Accept", HeaderValue::from_str("application/json").unwrap());
+
+    let client = reqwest::ClientBuilder::new()
+        .timeout(Duration::from_secs(20))
+        .default_headers(default_headers)
+        .gzip(true)
+        .user_agent(ua)
+        .build()?;
+
+    Ok(client)
+}