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use std::marker::PhantomData;
use std::iter::Iterator;
use std::fmt;
use serde::{json, Deserialize};
use hyper::method::Method;
use response::{self, RawPagedResponse, NamedResponse, NotArray};
use request::{BaseRequest, DoRequest};
use request::PagedRequest;
pub struct RequestBuilder<'t, T> {
pub auth: &'t str,
pub method: Method,
pub url: String,
pub resp_t: PhantomData<*const T>,
pub body: Option<String>
}
impl<'t, T> RequestBuilder<'t, T> {
pub fn with_auth(auth: &'t str) -> RequestBuilder<'t, T> {
RequestBuilder {
auth: auth,
method: Method::Get,
url: String::new(),
resp_t: PhantomData,
body: None
}
}
pub fn new<S>(auth: &'t str, url: S)
-> RequestBuilder<'t, T>
where S: Into<String> {
RequestBuilder {
auth: auth,
method: Method::Get,
url: url.into(),
resp_t: PhantomData,
body: None
}
}
}
impl<'t, T> fmt::Display for RequestBuilder<'t, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "method: {}\n\
content-type: application/json\n\
authorization: Bearer {}\n\
url: {}\n\
body: {}\n",
self.method,
self.auth,
if !self.url.is_empty() { self.url.clone() } else { "None".to_owned() },
if let Some(ref bdy) = self.body { format!("{}", bdy) } else { "None".to_owned() } )
}
}
impl<'t, T> BaseRequest for RequestBuilder<'t, T> {
fn auth(&self) -> &str {
self.auth
}
fn url(&self) -> &str {
&self.url[..]
}
fn method(&self) -> Method {
self.method.clone()
}
fn body(&self) -> Option<String> {
self.body.clone()
}
}
impl<'t, I> PagedRequest for RequestBuilder<'t, Vec<I>>
where I: Deserialize + NamedResponse + NotArray {
type Item = I;
fn retrieve_single_page(&self, url: String) -> Result<RawPagedResponse<I>, String> {
debug!("Inside retrieve_single_page() with url: {}", &url[..]);
if url.is_empty() {
debug!("No url provided");
return Err("No URL provided".to_owned())
}
let mut rb: RequestBuilder<'t, Vec<I>> = RequestBuilder::with_auth(self.auth);
rb.url = url.clone();
match rb.retrieve_json() {
Ok(ref s) => {
let mut name = <I as NamedResponse>::name().into_owned();
name.push('s');
let re = regex!(&format!("\"{}\"", name));
let json_str = &re.replace(&s[..], "\"collection\"");
match json::from_str::<response::RawPagedResponse<I>>(json_str) {
Ok(val) => {
return Ok(val)
},
Err(e) => {
debug!("Error getting objects: {}", e.to_string());
return Err(e.to_string())
}
}
},
Err(e) => {
debug!("Error getting json: {}", e.to_string());
return Err(e.to_string())
}
}
}
}
impl<'t, I> DoRequest<Vec<I>> for RequestBuilder<'t, Vec<I>>
where I: Deserialize + NamedResponse + NotArray {
#[cfg_attr(not(feature = "debug"), allow(unused_variables))]
fn retrieve(&self) -> Result<Vec<I>, String> {
debug!("Inside retrieve() for paged request");
debug!("Getting json...");
match self.retrieve_json() {
Ok(ref s) => {
debug!("Sucess");
let mut name = <I as NamedResponse>::name().into_owned();
name.push('s');
debug!("Replacing {} with collection", &name[..]);
let re = regex!(&format!("\"{}\"", name));
let res = &re.replace(&s[..], "\"collection\"");
debug!("Getting object from json string");
match json::from_str::<response::RawPagedResponse<I>>(res) {
Ok(mut val) => {
debug!("Sucess");
let mut regs = vec![];
regs.append(&mut val.collection);
let mut url = if val.links.pages.is_some() && val.links.pages.clone().unwrap().next.is_some() {
val.links.pages.clone().unwrap().next.clone().unwrap()
} else {
String::new()
};
debug!("Next page URL: {}", &url[..]);
while let Ok(mut page) = self.retrieve_single_page(url.clone()) {
regs.append(&mut page.collection);
url = if page.links.pages.is_some() && page.links.pages.clone().unwrap().next.is_some() {
page.links.pages.clone().unwrap().next.clone().unwrap()
} else {
String::new()
};
debug!("Next page URL: {}", &url[..]);
}
Ok(regs)
},
Err(e) => {
debug!("Error getting object: {}", e.to_string());
return self.retrieve_obj(name)
}
}
},
Err(e) => {
debug!("Error getting json: {}", e.to_string());
Err(e.to_string())
}
}
}
}
impl<'t> DoRequest<response::HeaderOnly> for RequestBuilder<'t, response::HeaderOnly> {
fn retrieve(&self) -> Result<response::HeaderOnly, String> {
self.retrieve_header()
}
}