1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118

#![warn(bad_style)]
// #![warn(missing_docs)]
#![warn(unused)]
#![warn(unused_extern_crates)]
#![warn(unused_import_braces)]
#![warn(unused_qualifications)]
#![warn(unused_results)]

extern crate failure;
extern crate oauth_client as oauth;
#[macro_use]
extern crate serde_derive;
extern crate serde_json;

use oauth::Token;
use std::borrow::Cow;
use std::collections::HashMap;

type Result<T> = std::result::Result<T, failure::Error>;

mod api_twitter_oauth {
    pub const REQUEST_TOKEN: &'static str = "https://api.twitter.com/oauth/request_token";
    pub const AUTHORIZE: &'static str = "https://api.twitter.com/oauth/authorize";
    pub const ACCESS_TOKEN: &'static str = "https://api.twitter.com/oauth/access_token";
}

mod api_twitter_soft {
    pub const UPDATE_STATUS: &'static str = "https://api.twitter.com/1.1/statuses/update.json";
    pub const HOME_TIMELINE: &'static str = "https://api.twitter.com/1.1/statuses/home_timeline.\
                                             json";
}

#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct Tweet {
    pub created_at: String,
    pub text: String,
}

impl Tweet {
    pub fn parse_timeline(json_string: String) -> Result<Vec<Tweet>> {
        let conf = serde_json::from_str(&json_string)?;
        Ok(conf)
    }
}

fn split_query<'a>(query: &'a str) -> HashMap<Cow<'a, str>, Cow<'a, str>> {
    let mut param = HashMap::new();
    for q in query.split('&') {
        let mut s = q.splitn(2, '=');
        let k = s.next().unwrap();
        let v = s.next().unwrap();
        let _ = param.insert(k.into(), v.into());
    }
    param
}

pub fn get_request_token(consumer: &Token) -> Result<Token<'static>> {
    let bytes = oauth::get(api_twitter_oauth::REQUEST_TOKEN, consumer, None, None)?;
    let resp = String::from_utf8(bytes)?;
    let param = split_query(&resp);
    let token = Token::new(
        param.get("oauth_token").unwrap().to_string(),
        param.get("oauth_token_secret").unwrap().to_string(),
    );
    Ok(token)
}

pub fn get_authorize_url(request: &Token) -> String {
    format!(
        "{}?oauth_token={}",
        api_twitter_oauth::AUTHORIZE,
        request.key
    )
}

pub fn get_access_token(consumer: &Token, request: &Token, pin: &str) -> Result<Token<'static>> {
    let mut param = HashMap::new();
    let _ = param.insert("oauth_verifier".into(), pin.into());
    let bytes = oauth::get(
        api_twitter_oauth::ACCESS_TOKEN,
        consumer,
        Some(request),
        Some(&param),
    )?;
    let resp = String::from_utf8(bytes)?;
    let param = split_query(&resp);
    let token = Token::new(
        param.get("oauth_token").unwrap().to_string(),
        param.get("oauth_token_secret").unwrap().to_string(),
    );
    Ok(token)
}

/// function to update the status
/// This function takes as arguments the consumer key, the access key, and the status (obviously)
pub fn update_status(consumer: &Token, access: &Token, status: &str) -> Result<()> {
    let mut param = HashMap::new();
    let _ = param.insert("status".into(), status.into());
    let _ = oauth::post(
        api_twitter_soft::UPDATE_STATUS,
        consumer,
        Some(access),
        Some(&param),
    )?;
    Ok(())
}

pub fn get_last_tweets(consumer: &Token, access: &Token) -> Result<Vec<Tweet>> {
    let bytes = oauth::get(
        api_twitter_soft::HOME_TIMELINE,
        consumer,
        Some(access),
        None,
    )?;
    let last_tweets_json = String::from_utf8(bytes)?;
    let ts = Tweet::parse_timeline(last_tweets_json)?;
    Ok(ts)
}