blowup 1.0.0

All tools related to improving my movie-watching experience.
Documentation 
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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149

use crate::error::SearchError;
use serde::Deserialize;

#[derive(Debug, Clone)]
pub struct MovieResult {
    pub title: String,
    pub year: u32,
    pub quality: String,
    pub magnet: Option<String>,
    pub torrent_url: Option<String>,
    pub seeds: u32,
}

pub async fn search_yify(query: &str, year: Option<u32>) -> Result<Vec<MovieResult>, SearchError> {
    let client = reqwest::Client::new();
    match search_via_api(&client, query, year).await {
        Ok(results) if !results.is_empty() => Ok(results),
        Ok(_) => Err(SearchError::NoResults(query.to_string())),
        Err(_) => Err(SearchError::NoResults(query.to_string())),
    }
}

async fn search_via_api(
    client: &reqwest::Client,
    query: &str,
    year: Option<u32>,
) -> Result<Vec<MovieResult>, SearchError> {
    let mut params = vec![
        ("query_term", query.to_string()),
        ("sort_by", "seeds".to_string()),
        ("order_by", "desc".to_string()),
    ];
    if let Some(y) = year {
        params.push(("year", y.to_string()));
    }

    let resp = client
        .get("https://yts.torrentbay.st/api/v2/list_movies.json")
        .query(&params)
        .header("User-Agent", "blowup/0.1")
        .send()
        .await?;

    let body: YtsResponse = resp.json().await?;
    parse_yts_response(body)
}

#[derive(Deserialize)]
struct YtsResponse {
    data: YtsData,
}

#[derive(Deserialize)]
struct YtsData {
    #[serde(default)]
    movies: Vec<YtsMovie>,
}

#[derive(Deserialize)]
struct YtsMovie {
    title: String,
    year: u32,
    torrents: Vec<YtsTorrent>,
}

#[derive(Deserialize)]
struct YtsTorrent {
    quality: String,
    #[serde(rename = "url")]
    url: String,
    seeds: u32,
    #[serde(default)]
    magnet_url: Option<String>,
}

fn parse_yts_response(resp: YtsResponse) -> Result<Vec<MovieResult>, SearchError> {
    let mut results: Vec<MovieResult> = resp
        .data
        .movies
        .into_iter()
        .flat_map(|movie| {
            let title = movie.title.clone();
            let year = movie.year;
            movie.torrents.into_iter().map(move |t| MovieResult {
                title: title.clone(),
                year,
                quality: t.quality,
                magnet: t.magnet_url,
                torrent_url: Some(t.url),
                seeds: t.seeds,
            })
        })
        .collect();

    results.sort_by(|a, b| {
        quality_rank(&b.quality)
            .cmp(&quality_rank(&a.quality))
            .then(b.seeds.cmp(&a.seeds))
    });

    Ok(results)
}

fn quality_rank(q: &str) -> u8 {
    match q {
        "2160p" => 4,
        "1080p" => 3,
        "720p" => 2,
        _ => 1,
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use serde_json::json;

    fn make_yts_response(movies: serde_json::Value) -> YtsResponse {
        serde_json::from_value(json!({"data": {"movies": movies}})).unwrap()
    }

    #[test]
    fn parse_single_movie() {
        let resp = make_yts_response(json!([{
            "title": "Blow-Up",
            "year": 1966,
            "torrents": [
                {"quality": "1080p", "url": "http://x.com/a.torrent", "seeds": 100},
                {"quality": "720p",  "url": "http://x.com/b.torrent", "seeds": 200}
            ]
        }]));
        let results = parse_yts_response(resp).unwrap();
        assert_eq!(results.len(), 2);
        assert_eq!(results[0].quality, "1080p");
    }

    #[test]
    fn quality_rank_order() {
        assert!(quality_rank("1080p") > quality_rank("720p"));
        assert!(quality_rank("2160p") > quality_rank("1080p"));
    }

    #[test]
    fn empty_movies_returns_empty_vec() {
        let resp = make_yts_response(json!([]));
        let results = parse_yts_response(resp).unwrap();
        assert!(results.is_empty());
    }
}