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//! # Malaga HTTP Utils
//! 
//! `malaga_http_utils` is a small library to handler request and response objects
//! 
//! # Example:
//! ```
//! #[macro_use]
//! extern crate serde_derive;
//! 
//! extern crate serde_json;
//! extern crate serde;
//! extern crate bincode;
//! extern crate malaga_http_utils;
//! 
//! use malaga_http_utils::{HttpObj, utils::*};
//! use std::str;
//! 
//! impl HttpObj for TestReq {
//!    fn serialize_to_struct(req: &[u8]) -> Self {
//!        let req_string = str::from_utf8(req).unwrap();
//!        let ser_req: TestReq = serde_json::from_str(req_string).unwrap();
//!        
//!        ser_req
//!    }
//! 
//!     fn serialize_to_binary(req: TestReq) -> Vec<u8> {
//!         let ser_req: Vec<u8> = bincode::serialize(&req).unwrap();
//! 
//!         ser_req
//!     } 
//! }
//! 
//! #[derive(Serialize, Deserialize, Debug, PartialEq)]
//!     struct TestHeader {
//!         #[serde(rename = "Content-Type")]
//!         content_type: String,
//!         #[serde(rename = "Authorization")]
//!         pub authorization: String,
//!     }
//! 
//! #[derive(Serialize, Deserialize, Debug, PartialEq)]
//! struct Body {
//!     user: String,
//! }
//! 
//! #[derive(Serialize, Deserialize, Debug, PartialEq)]
//! struct TestReq {
//!     headers: TestHeader,
//!     method: Methods,
//!     body: Body,
//! }
//! 
//! fn main() {
//!     let resq = b"{
//!        \"headers\": {
//!            \"Content-Type\": \"application/json\",
//!            \"Authorization\": \"Basis 1ddmcdd\"
//!        },
//!        \"method\": \"POST\",
//!        \"body\": {
//!            \"user\":\"test\"
//!        }
//!    }";
//!
//!    let resq_struct_ser: TestReq = TestReq::serialize_to_struct(resq);
//!    let resq_binary_ser: Vec<u8> = TestReq::serialize_to_binary(resq_struct_ser);
//!    let req_string: TestReq = bincode::deserialize(&resq_binary_ser[..]).unwrap();
//! 
//!    assert_eq!(req_string, TestReq{
//!        headers: TestHeader {
//!            content_type: String::from("application/json"),
//!            authorization: String::from("Basis 1ddmcdd"),
//!        },
//!        method: Methods::POST,
//!        body: Body {
//!            user: String::from("test")
//!        }
//!    });
//! }
//! ```

#[macro_use]
extern crate serde_derive;

extern crate serde_json;
extern crate serde;
extern crate bincode;

pub mod utils;

/// trait to serialize http objects to binary or struct
pub trait HttpObj {
    fn serialize_to_struct(http_bin: &[u8]) -> Self;
    fn serialize_to_binary(http_obj: Self) -> Vec<u8>;
}

#[cfg(test)]
mod tests {
    use super::*;
    use std::str;

    impl HttpObj for TestReq {
        fn serialize_to_struct(req: &[u8]) -> Self {
            let req_string = str::from_utf8(req).unwrap();
            let ser_req: TestReq = serde_json::from_str(req_string).unwrap();
            
            ser_req
        }

        fn serialize_to_binary(req: TestReq) -> Vec<u8> {
            let ser_req: Vec<u8> = bincode::serialize(&req).unwrap();

            ser_req
        } 
    }

    #[derive(Serialize, Deserialize, Debug, PartialEq)]
        struct TestHeader {
            #[serde(rename = "Content-Type")]
            content_type: String,
            #[serde(rename = "Authorization")]
            pub authorization: String,
        }

    #[derive(Serialize, Deserialize, Debug, PartialEq)]
    struct Body {
        user: String,
    }

    #[derive(Serialize, Deserialize, Debug, PartialEq)]
    struct TestReq {
        headers: TestHeader,
        method: utils::Methods,
        body: Body,
    }

    #[test]
    fn it_should_serialize_to_strcut() {

        let resq = b"{
            \"headers\": {
                \"Content-Type\": \"application/json\",
                \"Authorization\": \"Basis 1ddmcdd\"
            },
            \"method\": \"POST\",
            \"body\": {
                \"user\":\"test\"
            }
        }";

        let resq_serialized: TestReq = TestReq::serialize_to_struct(resq);
        let method = utils::get_method(resq_serialized.method);

        assert_eq!(resq_serialized.body.user, "test");
        assert_eq!(method, "POST");
    }

    #[test]
    fn it_should_serializa_to_binary() {
        let resq = b"{
            \"headers\": {
                \"Content-Type\": \"application/json\",
                \"Authorization\": \"Basis 1ddmcdd\"
            },
            \"method\": \"POST\",
            \"body\": {
                \"user\":\"test\"
            }
        }";

        let resq_struct_ser: TestReq = TestReq::serialize_to_struct(resq);

        let resq_binary_ser: Vec<u8> = TestReq::serialize_to_binary(resq_struct_ser);

        let req_string: TestReq = bincode::deserialize(&resq_binary_ser[..]).unwrap();
        
        
        assert_eq!(req_string, TestReq{
            headers: TestHeader {
                content_type: String::from("application/json"),
                authorization: String::from("Basis 1ddmcdd"),
            },
            method: utils::Methods::POST,
            body: Body {
                user: String::from("test")
            }
        });
    }
}