Basic API request to DeepL

endolingual-macro/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "endolingual-macro"
+version = "0.1.0"
+edition = "2021"
+license = "MIT"
+description = "Procedural macros for endolingual"
+
+[lib]
+proc-macro = true
+
+[dependencies]
+proc-macro2 = "1.0"
+quote = "1.0"
+syn = { version = "2.0", features = ["full"] }
+reqwest = { version = "0.12.9", features = ["blocking", "json", "rustls-tls"], default-features = false }
+serde_json = "1.0"
+
+[dev-dependencies]
+endolingual = { path = "../endolingual", version = "0.1.0" }

endolingual-macro/src/lib.rs

@@ -0,0 +1,40 @@
+use proc_macro::TokenStream;
+use quote::quote;
+use syn::{parse_macro_input, LitStr};
+
+#[proc_macro]
+pub fn translate(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as LitStr);
+    let text = input.value();
+
+    let api_key =
+        std::env::var("DEEPL_API_KEY").expect("Environment variable `DEEPL_API_KEY` must be set");
+
+    let client = reqwest::blocking::Client::new();
+    let response = client
+        .post("https://api.deepl.com/v2/translate")
+        .header("Authorization", format!("DeepL-Auth-Key {}", api_key))
+        .header("Content-Type", "application/json")
+        .json(&serde_json::json!({
+            "text": [text],
+            "target_lang": "FR"
+        }))
+        .send()
+        .expect("Failed to send request to DeepL API");
+
+    let translation = response
+        .json::<serde_json::Value>()
+        .expect("Failed to parse DeepL API response");
+
+    let translated_text = translation["translations"][0]["text"]
+        .as_str()
+        .expect("Failed to extract translated text");
+
+    quote! {
+        TranslationSet {
+            en: #text,
+            fr: #translated_text,
+        }
+    }
+    .into()
+}