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

use crate::{Sauce, SauceItem, SauceResult, SauceError};
use async_trait::async_trait;
use reqwest::{header, Client};
use serde::{Deserialize};
use std::collections::HashMap;

const BASE_URL: &str = "https://saucenao.com/search.php?db=999&output_type=2&testmode=1&numres=16&url={url}&api_key={api_key}";

/// The SauceNao source.
/// Requires an API key to function.
#[derive(Debug)]
pub struct SauceNao {
    api_key: Option<String>,
}

#[async_trait]
impl Sauce for SauceNao {
    async fn build_url(&self, url: &str) -> Result<String, SauceError> {
        let api_key = self.get_api_key();

        if api_key.is_none() {
            return Err(SauceError::GenericStr("API_KEY is None"));
        }
        let api_key = api_key.clone().unwrap();

        let mut vars = HashMap::new();
        vars.insert("url".to_string(), urlencoding::encode(&url));
        vars.insert("api_key".to_string(), api_key);

        let fmt =
            strfmt::strfmt(BASE_URL, &vars)?;

        return Ok(fmt);
    }

    async fn check_sauce(&self, original_url: String) -> Result<SauceResult, SauceError> {
        let url = self.build_url(&original_url).await?;

        let cli = Client::new();
        let head = cli
            .head(&original_url)
            .send()
            .await?;

        let content_type = head.headers().get(header::CONTENT_TYPE);
        if let Some(content_type) = content_type {
            let content_type = content_type.to_str()?;
            if !content_type.contains("image") {
                return Err(SauceError::LinkIsNotImage);
            }
        }

        let resp = cli
            .get(&url)
            .header(header::ACCEPT_ENCODING, "utf-8")
            .send()
            .await?;

        let res = resp
            .json::<ApiResult>()
            .await?;

        let mut result = SauceResult {
            original_url: original_url.to_string(),
            ..Default::default()
        };

        for x in res.results {
            if let Some(links) = x.data.ext_urls {
                let item = SauceItem {
                    similarity: x
                        .header
                        .similarity
                        .parse::<f64>()?,
                    link: links[0].clone(),
                };
                result.items.push(item);
            }
        }

        Ok(result)
    }
}

impl SauceNao {
    /// Creates a new SauceNao source, with a [None] api key.
    pub fn new() -> Self {
        SauceNao { api_key: None }
    }

    /// Sets the api key to a given [String].
    pub fn set_api_key(&mut self, api_key: String) {
        self.api_key = Some(api_key)
    }

    fn get_api_key(&self) -> &Option<String> {
        &self.api_key
    }
}

impl Default for SauceNao {
    fn default() -> Self {
        Self::new()
    }
}

#[derive(Debug, Deserialize, PartialOrd, PartialEq, Clone, Default)]
struct ApiResult {
    pub header: ApiHeader,
    pub results: Vec<ApiResultItem>,
}

#[derive(Debug, Deserialize, PartialOrd, PartialEq, Clone, Default)]
struct ApiHeader {
    pub status: i64,
    pub results_requested: i64,
}

#[derive(Debug, Deserialize, PartialOrd, PartialEq, Clone, Default)]
struct ApiResultItem {
    pub header: ApiResultItemHeader,
    pub data: ApiResultItemData,
}

#[derive(Debug, Deserialize, PartialOrd, PartialEq, Clone, Default)]
struct ApiResultItemHeader {
    pub similarity: String,
}

#[derive(Debug, Deserialize, PartialOrd, PartialEq, Clone, Default)]
struct ApiResultItemData {
    pub ext_urls: Option<Vec<String>>,
}