juri 0.3.5

http service
Documentation 
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use crate::{request::HTTPMethod, routing::match_route_path, JuriPlugin, Request, Response};
use regex::Regex;
use std::{collections::HashMap, path::PathBuf};

pub struct StaticFilePlugin {
    re_urls: Vec<String>,
    dirs: Vec<PathBuf>,
}

impl StaticFilePlugin {
    pub fn new(urls: Vec<String>, dirs: Vec<PathBuf>) -> Self {
        let mut re_urls = vec![];
        for url in urls.iter() {
            re_urls.push(format!("{}{}", url, r"/(.+)"));
        }
        StaticFilePlugin { re_urls, dirs }
    }

    fn find_file_path(&self, url_path: &String) -> Option<PathBuf> {
        for dir in self.dirs.iter() {
            if let Some(path) = dir.to_str() {
                let file_path = PathBuf::from(format!("{}/{}", path, url_path));
                if file_path.exists() && file_path.is_file() {
                    return Some(file_path);
                }
            }
        }
        None
    }
}

impl JuriPlugin for StaticFilePlugin {
    fn request(&self, request: &mut Request) -> Option<Response> {
        if request.method == HTTPMethod::GET {
            for re in self.re_urls.iter() {
                if let Some(params_map) = match_route_path(
                    re.to_string(),
                    vec!["url_path".to_string()],
                    request.path.clone(),
                ) {
                    if let Some(url_path) = params_map.get("url_path") {
                        if let Some(file_path) = self.find_file_path(url_path) {
                            let mut headers = HashMap::new();
                            let re = Regex::new(r"\.(.*?)$").unwrap();
                            if let Some(caps) = re.captures(&url_path) {
                                if let Some(extension) = caps.get(1) {
                                    if let Some(content_type) =
                                        extension_to_mime(extension.as_str())
                                    {
                                        headers.insert(
                                            "Content-Type".to_string(),
                                            content_type.to_string(),
                                        );
                                    }
                                }
                            }

                            return Some(Response {
                                status_code: 200,
                                headers,
                                body: crate::ResponseBody::Path(file_path),
                            });
                        }
                    }
                }
            }
        }

        None
    }

    fn response(&self, _request: &Request, _response: &mut Response) {}
}

fn extension_to_mime(extension: &str) -> Option<&str> {
    match extension {
        "txt" => Some("text/plain"),
        "html" => Some("text/html"),
        "css" => Some("text/css"),
        "js" => Some("text/javascript"),
        
        "png" => Some("image/png"),
        "jpg" => Some("image/jpeg"),
        "gif" => Some("image/gif"),
        "svg" => Some("image/svg+xml"),
        _ => None,
    }
}

#[test]
fn test_file_path() {
    let path = PathBuf::from("/aa/");
    println!("{:#?}", path.to_str());

    let path = path.join("bb/cc.js");
    println!("{:#?}", path.to_str());
}