//-- ----------------------------------------------------------------
//-- Author : Almir Lima  / iSoft Sistemas                         --
//-- Date: 19 jan 2019                                             --
//-- Decode the request HTTP 1.1, and result a Struct Request      --
//-- Decodifica a requisição HTTP 1.1, e devolve a Struct Request  --
//-- ----------------------------------------------------------------

///--------------------------------------------------------------------------------------------
///----  Decode HTTP REQUEST and converte in Http_Request Struct
///--------------------------------------------------------------------------------------------

#[derive(Debug)]
pub struct HttpRequest {
    pub verb: String,
    pub app: String,
    pub res: String,
    pub method: String,
    pub qry: Vec<String>,
    pub data: String,
}

impl HttpRequest {
  
  pub fn new( req_http: &str ) -> Option<HttpRequest>{
        
     let mut e_data = req_http.split("\r\n\r\n"); // Split Data and Head of Http request
     let head = e_data.next()?;
     let data = e_data.next()?;

     let mut parts = head.split(" "); // Split verb and uri 
     let verb = parts.next()?;
     let uri = parts.next()?;

     let mut parts = uri.split("?"); // Split query of uri
     let path = parts.next()?;
     let query = parts.next()?;

     let mut parts = path.split("/"); // split path of uri 
     let _ = parts.next()?;
     let app = parts.next()?; // Aplication
     let res = parts.next()?; // Resource
     let method = parts.next()?; // method 
      
     let qry = query.split("&").map( str::to_string ).collect(); // create a array of query
        
     // return Some if ok or None case have a error
     Some( 
          HttpRequest{
                        verb: verb.to_string(),
                        app: app.to_string(),
                        res: res.to_string(),
                        method: method.to_string(),
                        qry,
                        data: data.to_string(),
          }
     )
  }
}