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    extern crate json;
    extern crate reqwest;
    extern crate tokio;
    use chrono::{DateTime, Local};
    use std::fmt;

    #[derive(Debug)]
    pub enum Error {
        JsonParseError,
        HttpGetError,
    }

    #[derive(Clone)]
    pub struct RaPost {
        id: String,
        datetime: DateTime<Local>,
        title: String,
        text: Option<String>,
        json: json::JsonValue,
        pinned: bool,
    }

    impl fmt::Debug for RaPost {
        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
            f.debug_struct("RaPost")
                .field("id", &self.id)
                .field("datetime", &self.datetime)
                .field("title", &self.title)
                .field("text", &self.text)
                .finish()
        }
    }

    impl RaPost {
        pub fn new(id: &str, title: &str, json: &json::JsonValue, pinned: bool) -> Self {
            Self {
                id: id.to_string(),
                title: title.to_string(),
                datetime: Local::now(), // Temp
                text: Some(String::from("")),
                json: json.clone(),
                pinned,
            }
        }
        pub fn parse(post: &json::JsonValue) -> Result<RaPost, json::Error> {
            Ok(RaPost::new(
                json::stringify(post["name"].clone()).as_str(),
                json::stringify(post["title"].clone()).as_str(),
                post,
                post["pinned"].as_bool().unwrap(),
            ))
        }
    }

    #[derive(Debug)]
    pub struct RaSub {
        pub name: String,
        pub posts: Vec<RaPost>,
        after: Option<String>,
    }

    impl RaSub {
        pub fn pinned_posts(&self) -> Option<Vec<RaPost>> {
            let mut pinned_posts: Vec<RaPost> = Vec::new();
            for post in &self.posts {
                if post.pinned {
                    pinned_posts.push(post.clone());
                }
            }
            if pinned_posts.is_empty() {
                return None;
            } else {
                return Some(pinned_posts);
            }
        }
    }

    #[derive(Debug)]
    pub struct RaprClient {
        oauth: Option<String>,
        rwclient: reqwest::Client,
    }

    impl RaprClient {
        pub fn new() -> Self {
            Self {
                oauth: None,
                rwclient: reqwest::Client::new(),
            }
        }
        pub fn subreddit(name: &str) -> RaSub {
            RaSub {
                name: String::from(name),
                posts: Vec::new(),
                after: None,
            }
        }
        pub async fn fetch(&self, count: u32, sub: &mut RaSub) -> Result<Vec<RaPost>, Error> {
            let url = match self.oauth {
                None => format!("https://reddit.com/r/{}.json", sub.name),
                Some(_) => format!("https://oauth.reddit.com/r/{}.json", sub.name),
            };

            let res = match &sub.after {
                None => self
                    .rwclient
                    .get(url)
                    .query(&[("limit", count)])
                    .send()
                    .await
                    .unwrap(),
                Some(after) => self
                    .rwclient
                    .get(url)
                    .query(&[("limit", count.to_string()), ("after", after.to_string())])
                    .send()
                    .await
                    .unwrap(),
            };

            let mut parsed = json::parse(res.text().await.unwrap().as_str()).unwrap();

            let raw_posts: Vec<json::JsonValue> = match parsed["data"]["children"].take() {
                json::JsonValue::Array(arr) => arr,
                _ => return Err(Error::JsonParseError),
            };

            let mut parsed_posts: Vec<RaPost> = Vec::new();

            for post in raw_posts {
                parsed_posts.push(RaPost::parse(&post["data"]).unwrap());
            }
            if parsed["data"]["after"].is_string() {
                sub.after = Some(parsed["data"]["after"].to_string());
            }
            sub.posts.append(&mut parsed_posts);
            Ok(parsed_posts)
        }
    }