1 files changed, 59 insertions, 0 deletions
diff --git a/spider_server/src/response.rs b/spider_server/src/response.rs
new file mode 100644
index 0000000..fe1df78
--- /dev/null
+++ b/spider_server/src/response.rs
@@ -0,0 +1,59 @@
+use std::collections::HashMap;
+use std::fmt;
+
+use crate::http_status::get_status_text;
+
+pub struct Response {
+    code: u16,
+    headers: HashMap<String, String>,
+    body: Vec<u8>,
+}
+
+// TODO(andrew): add more constructors for different content types.
+impl Response {
+    pub fn html(html: String, status_code: u16) -> Response {
+        let mut headers = HashMap::new();
+        headers.insert( String::from("Content-Type")
+                      , String::from("text/html") );
+
+        return Response {
+            code: status_code,
+            headers: headers,
+            body: html.as_bytes().to_vec(),
+        };
+    }
+
+    pub fn format<'a>(&self) -> Vec<u8> {
+        // FIXME(andrew): is undefined status code an error that should
+        // be handled here?
+        let status_text = match get_status_text(self.code) {
+            Some(text) => text,
+            None => String::from("UNDEFINED")
+        };
+
+        let mut data = Vec::new();
+
+        let first_line = format!("HTTP/1.1 {} {}", self.code, status_text);
+        let headers = format_headers(&self.headers);
+        let head = format!("{}\r\n{}\r\n", first_line, headers);
+
+        data.extend_from_slice(head.as_bytes());
+        data.extend_from_slice(&self.body);
+        return data;
+    }
+}
+
+impl fmt::Display for Response {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        return write!(f, "Response({})", self.code);
+    }
+}
+
+fn format_headers(headers: &HashMap<String, String>) -> String {
+    let mut result = String::new();
+    for (key, value) in headers.iter() {
+        let line = format!("{}: {}\r\n", key, value);
+        result.push_str(&line);
+    }
+    return result;
+}