curl implementation

src/curl.rs

@@ -1,11 +1,58 @@
+use std::io::Read;
 use std::string::String;
 use std::collections::HashMap;
-use curl::easy::List;
+use curl::easy::{Easy, List};
+
+pub fn request(auth: HashMap<String, String>) -> u32 {
+    let url = auth.get("ha_url").expect("[ERROR] Failed to read the URL").as_str();
+    
+    // escape character for { is {{ and for } is }}
+    let entity_id = auth.get("light_entity_id").expect("[ERROR] Failed to read the entity id").as_str();
+    let body = format!("{{\"entity_id\": {entity_id}}}");
+    let mut data = body.as_bytes();
+    
+    let token = auth.get("access_token").expect("[ERROR] Failed to read the token").as_str();
+    let auth = format!("Authorization: Bearer {}", &token[1..token.len()-1]);
     
-pub fn curl_request(auth: HashMap<String, String>) {
-    // add token
-    let token: String = String::from("Authorization: Bearer ");
     let mut list = List::new();
-    // fixme
-    list.append(token.as_str()).unwrap();
+    list.append(&auth).unwrap();
+    list.append("Content-Type: application/json").unwrap();
+    
+    let mut request = Easy::new();
+    // proper error handling
+    
+    request.url(&url[1..url.len()-1]).unwrap_or_else(|e| {
+        panic!("[ERROR] Failed to set the URL for the CURL request:\n{e}");
+    });
+    
+    request.post(true).unwrap_or_else(|e| {
+        panic!("[ERROR] Failed to set the CURL request as POST:\n{e}");
+    });
+    
+    request.http_headers(list).unwrap_or_else(|e| {
+        panic!("[ERROR] Failed to apply HTTP headers:\n{e}");
+    });
+    request.post_field_size(data.len() as u64).unwrap_or_else(|e| {
+        panic!("[ERROR] Failed to set the POST field size for CURL request:\n{e}");
+    });
+
+    let mut transfer = request.transfer();
+    
+    transfer.read_function(|buf| {
+        Ok(data.read(buf).unwrap_or(0))
+    }).unwrap_or_else(|e| {
+        panic!("[ERROR] Failed to read the data:\n{e}");
+    });
+    
+    transfer.perform().unwrap_or_else(|e| {
+        panic!("[ERROR] Failed to perform the CURL request:\n{e}");
+    });
+    
+    // drop transfer so we can access request.response_code below
+    drop(transfer);
+
+    match request.response_code() { 
+        Ok(t) => t,
+        Err(e) => panic!("[ERROR] Failed to retrieve the response code:\n{e}"),
+    }
 }

src/json.rs

@@ -31,7 +31,7 @@ pub fn get_json(path: &Path) -> HashMap<String, String> {
 
 fn read_file(path: &Path) -> String {
     let read_result = File::open(path);
-    let mut result= String::new();
+    let mut result = String::new();
 
     match read_result {
         Ok(mut t) => {
@@ -45,7 +45,7 @@ fn read_file(path: &Path) -> String {
         },
         Err(err) => match err.kind() {
             ErrorKind::NotFound => {
-                println!("[ERROR] The file '{}' does not exist", path.display());
+                eprintln!("[ERROR] The file '{}' does not exist", path.display());
                 exit(1);
             },
             _ => panic!("[ERROR] Unexpected error, closing ..."),

src/main.rs

@@ -1,6 +1,7 @@
 use std::path::Path;
 mod json;
 mod curl;
+mod serial;
 
 fn main() {
     let data_file = Path::new("data.json");
@@ -8,6 +9,7 @@ fn main() {
     // some loop for getting data from arduino
     
     // send curl request
-    let res = curl::curl_request(data);
+    let res = curl::request(data);
+    println!("Response code: {res}\n");
 }
 

src/serial.rs

@@ -0,0 +1,3 @@
+fn get_port() {}
+
+fn read_messages() {}