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use reqwest::Url;
use reqwest::blocking::multipart;

use crate::{Result, FhttpError, Response, Request, RequestResponseHandlerExt};
use crate::request::body::{Body, File};
use crate::request::has_body::HasBody;

pub struct Client;

impl Client {
    pub fn new() -> Self {
        Client {}
    }

    pub fn exec(
        &self,
        request: Request
    ) -> Result<Response> {
        let client = reqwest::blocking::Client::new();
        let url = request.url()?;
        let url = Url::parse(url)
            .map_err(|_| FhttpError::new(format!("Invalid URL: '{}'", url)))?;
        let req_body = request.body()?;
        let req_builder = client
            .request(request.method()?, url)
            .headers(request.headers()?);

        let req_builder = match req_body {
            Body::Plain(body) => req_builder.body(body.into_owned()),
            Body::Files(files) => {
                let mut multipart = multipart::Form::new();
                for File { name, path } in files {
                    multipart = multipart.file(name, path.clone())
                        .map_err(|_| FhttpError::new(format!("Error opening file {}", path.to_str().unwrap())))?;
                }
                req_builder.multipart(multipart)
            },
        };

        let response = req_builder.send()?;
        let status = response.status();
        let headers = response.headers().clone();
        let text = response.text().unwrap();

        let body = match status.is_success() {
            true => match request.response_handler()? {
                Some(handler) => {
                    handler.process_body(&text)?
                },
                None => text
            },
            false => text,
        };

        Ok(
            Response::new(
                status,
                headers,
                body
            )
        )
    }
}