diff --git a/src/cgg_data_source.rs b/src/cgg_data_source.rs
new file mode 100644
index 0000000..4a36b53
--- /dev/null
+++ b/src/cgg_data_source.rs
@@ -0,0 +1,90 @@
+extern crate indexmap;
+extern crate lazy_static;
+extern crate log;
+extern crate regex;
+extern crate reqwest;
+extern crate select;
+extern crate serde;
+extern crate serde_json;
+extern crate simple_logger;
+extern crate winreg;
+
+use indexmap::IndexMap;
+use regex::Regex;
+use select::document::Document;
+use select::predicate::{Class, Name};
+use serde_json::Value;
+
+use data_source::DataSource;
+
+pub struct CGGDataSource;
+impl DataSource for CGGDataSource {
+    fn get_champs_with_positions_and_patch(
+        client: &reqwest::Client,
+    ) -> (IndexMap<String, Vec<String>>, String) {
+        let page = client
+            .get("https://champion.gg")
+            .send()
+            .unwrap()
+            .text()
+            .unwrap();
+        let document = Document::from(&*page);
+
+        let patch = document
+            .find(Class("analysis-holder"))
+            .next()
+            .unwrap()
+            .find(Name("strong"))
+            .next()
+            .unwrap()
+            .text();
+
+        let mut champions = IndexMap::new();
+        for node in document.find(Class("champ-height")) {
+            let id = node
+                .find(Class("home-champion"))
+                .next()
+                .unwrap()
+                .attr("class")
+                .unwrap()
+                .split(' ')
+                .last()
+                .unwrap()
+                .to_string();
+            let positions = node
+                .find(Name("a"))
+                .skip(1)
+                .map(|x| {
+                    x.attr("href")
+                        .unwrap()
+                        .split('/')
+                        .last()
+                        .unwrap()
+                        .to_string()
+                })
+                .collect();
+            champions.insert(id, positions);
+        }
+
+        (champions, patch)
+    }
+
+    fn get_champ_data(id: &str, position: &str, client: &reqwest::Client) -> Option<Value> {
+        let mut req = client
+            .get(&format!(
+                "https://champion.gg/champion/{}/{}?league=",
+                id, position
+            ))
+            .send()
+            .unwrap();
+        if req.status().is_success() {
+            lazy_static! {
+                static ref RE: Regex =
+                    Regex::new(r"(?m)^\s+matchupData\.championData = (.*)$").unwrap();
+            }
+            serde_json::from_str(&RE.captures(&req.text().unwrap())?[1]).unwrap()
+        } else {
+            None
+        }
+    }
+}
diff --git a/src/data_source.rs b/src/data_source.rs
new file mode 100644
index 0000000..e63dc8c
--- /dev/null
+++ b/src/data_source.rs
@@ -0,0 +1,135 @@
+extern crate indexmap;
+extern crate lazy_static;
+extern crate log;
+extern crate regex;
+extern crate reqwest;
+extern crate select;
+extern crate serde;
+extern crate serde_json;
+extern crate simple_logger;
+extern crate winreg;
+
+use indexmap::IndexMap;
+use serde_json::Value;
+use std::fs;
+use std::path::PathBuf;
+
+#[derive(Serialize, Deserialize)]
+struct ItemSet {
+    title: String,
+    #[serde(rename = "type")]
+    type_: String,
+    map: String,
+    mode: String,
+    priority: bool,
+    sortrank: u32,
+    blocks: Vec<Value>,
+}
+
+const CONSUMABLES: [u32; 9] = [2003, 2004, 2055, 2031, 2032, 2033, 2138, 2140, 2139];
+const TRINKETS: [u32; 3] = [3340, 3364, 3363];
+const ITEM_TYPES: &'static [(&str, [&str; 2]); 4] = &[
+    ("Most Frequent Starters", ["firstItems", "mostGames"]),
+    (
+        "Highest Win % Starters",
+        ["firstItems", "highestWinPercent"],
+    ),
+    ("Most Frequent Core Build", ["items", "mostGames"]),
+    ("Highest Win % Core Build", ["items", "highestWinPercent"]),
+];
+
+pub trait DataSource {
+    fn get_champs_with_positions_and_patch(
+        client: &reqwest::Client,
+    ) -> (IndexMap<String, Vec<String>>, String);
+    fn get_champ_data(id: &str, position: &str, client: &reqwest::Client) -> Option<Value>;
+
+    fn make_item_set(data: &Value, label: &str) -> Value {
+        json!({
+        "items": data["items"].as_array().unwrap().iter().map(|x| json!({"id": x["id"].as_str(), "count": 1})).collect::<Vec<Value>>(),
+        "type": format!("{} ({:.2}% - {} games)", label, data["winPercent"].as_f64().unwrap() * 100., data["games"].as_u64().unwrap())
+    })
+    }
+
+    fn make_item_set_from_list(list: &Vec<u32>, label: &str, key: &str, data: &Value) -> Value {
+        let mut key_order = String::new();
+        if !data["skills"].get("skillInfo").is_none() {
+            key_order = data["skills"][key]["order"]
+                .as_array()
+                .unwrap()
+                .iter()
+                .map(|x| {
+                    data["skills"]["skillInfo"].as_array().unwrap()
+                        [x.as_str().unwrap().parse::<usize>().unwrap() - 1]["key"]
+                        .as_str()
+                        .unwrap()
+                })
+                .collect::<Vec<&str>>()
+                .join(".");
+        }
+        json!({
+        "items": list.iter().map(|x| json!({"id": x.to_string(), "count": 1})).collect::<Vec<Value>>(),
+        "type": format!("{} {}", label, key_order)
+    })
+    }
+    fn write_item_set(
+        id: &str,
+        name: &str,
+        pos: &str,
+        ver: &str,
+        path: &PathBuf,
+        client: &reqwest::Client,
+    ) {
+        info!("Retrieving data for {} at {}", name, pos);
+        let data = Self::get_champ_data(id, pos, client);
+
+        match data {
+            Some(data) => {
+                let mut item_set = ItemSet {
+                    title: format!(
+                        "CGG {} {} - {:.2}%",
+                        pos,
+                        ver,
+                        data["stats"]["winRate"].as_f64().unwrap() * 100.
+                    ),
+                    type_: "custom".to_string(),
+                    map: "any".to_string(),
+                    mode: "any".to_string(),
+                    priority: false,
+                    sortrank: 0,
+                    blocks: vec![],
+                };
+
+                for (label, path) in ITEM_TYPES.iter() {
+                    if !data[&path[0]].get(&path[1]).is_none() {
+                        item_set
+                            .blocks
+                            .push(Self::make_item_set(&data[&path[0]][&path[1]], label));
+                    }
+                }
+
+                item_set.blocks.push(Self::make_item_set_from_list(
+                    &CONSUMABLES.to_vec(),
+                    "Consumables | Frequent:",
+                    "mostGames",
+                    &data,
+                ));
+                item_set.blocks.push(Self::make_item_set_from_list(
+                    &TRINKETS.to_vec(),
+                    "Trinkets | Wins:",
+                    "highestWinPercent",
+                    &data,
+                ));
+
+                info!("Writing item set for {} at {}", name, pos);
+                fs::write(
+                    path.join(format!("CGG_{}_{}.json", id, pos)),
+                    serde_json::to_string_pretty(&item_set).unwrap(),
+                ).unwrap();
+            }
+            None => {
+                error!("Can't get data for {} at {}", id, pos);
+            }
+        }
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index 034430a..3bb6b84 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,12 +14,13 @@ extern crate lazy_static;
 extern crate indexmap;
 extern crate winreg;
 
+mod cgg_data_source;
+mod data_source;
+
+use cgg_data_source::CGGDataSource;
+use data_source::DataSource;
 use indexmap::IndexMap;
-use regex::Regex;
 use reqwest::header::{Headers, UserAgent};
-use select::document::Document;
-use select::predicate::{Class, Name};
-use serde_json::Value;
 use std::io::{Error, ErrorKind};
 use std::path::PathBuf;
 use std::{fs, thread, time};
@@ -41,32 +42,9 @@ struct ChampInfo {
     name: String,
 }
 
-#[derive(Serialize, Deserialize)]
-struct ItemSet {
-    title: String,
-    #[serde(rename = "type")]
-    type_: String,
-    map: String,
-    mode: String,
-    priority: bool,
-    sortrank: u32,
-    blocks: Vec<Value>,
-}
-
 const USER_AGENT: &str =
     "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0";
 const LOL_CHAMPS_DIR: &str = ".\\champs";
-const CONSUMABLES: [u32; 9] = [2003, 2004, 2055, 2031, 2032, 2033, 2138, 2140, 2139];
-const TRINKETS: [u32; 3] = [3340, 3364, 3363];
-const ITEM_TYPES: &'static [(&str, [&str; 2]); 4] = &[
-    ("Most Frequent Starters", ["firstItems", "mostGames"]),
-    (
-        "Highest Win % Starters",
-        ["firstItems", "highestWinPercent"],
-    ),
-    ("Most Frequent Core Build", ["items", "mostGames"]),
-    ("Highest Win % Core Build", ["items", "highestWinPercent"]),
-];
 
 fn main() {
     simple_logger::init_with_level(log::Level::Info).unwrap();
@@ -107,7 +85,7 @@ fn main() {
         .unwrap();
     info!("LoL numbers of champs: {}", champion.data.len());
 
-    let (champs, patch) = get_champs_with_positions_and_patch(&client);
+    let (champs, patch) = CGGDataSource::get_champs_with_positions_and_patch(&client);
 
     info!("CGG version: {}", patch);
     info!("CGG numbers of champs: {}", champs.len());
@@ -117,7 +95,7 @@ fn main() {
             let path = lol_champs_dir.join(&id).join("Recommended");
             fs::create_dir_all(&path).unwrap();
             for pos in positions {
-                write_item_set(
+                CGGDataSource::write_item_set(
                     &id,
                     &champion.data.get(id).unwrap().name,
                     &pos,
@@ -133,152 +111,6 @@ fn main() {
     }
 }
 
-fn get_champs_with_positions_and_patch(
-    client: &reqwest::Client,
-) -> (IndexMap<String, Vec<String>>, String) {
-    let page = client
-        .get("https://champion.gg")
-        .send()
-        .unwrap()
-        .text()
-        .unwrap();
-    let document = Document::from(&*page);
-
-    let patch = document
-        .find(Class("analysis-holder"))
-        .next()
-        .unwrap()
-        .find(Name("strong"))
-        .next()
-        .unwrap()
-        .text();
-
-    let mut champions = IndexMap::new();
-    for node in document.find(Class("champ-height")) {
-        let id = node
-            .find(Class("home-champion"))
-            .next()
-            .unwrap()
-            .attr("class")
-            .unwrap()
-            .split(' ')
-            .last()
-            .unwrap()
-            .to_string();
-        let positions = node
-            .find(Name("a"))
-            .skip(1)
-            .map(|x| {
-                x.attr("href")
-                    .unwrap()
-                    .split('/')
-                    .last()
-                    .unwrap()
-                    .to_string()
-            })
-            .collect();
-        champions.insert(id, positions);
-    }
-
-    (champions, patch)
-}
-
-fn get_champ_data(id: &str, position: &str, client: &reqwest::Client) -> Option<Value> {
-    let mut req = client
-        .get(&format!(
-            "https://champion.gg/champion/{}/{}?league=",
-            id, position
-        ))
-        .send()
-        .unwrap();
-    if req.status().is_success() {
-        lazy_static! {
-            static ref RE: Regex =
-                Regex::new(r"(?m)^\s+matchupData\.championData = (.*)$").unwrap();
-        }
-        serde_json::from_str(&RE.captures(&req.text().unwrap())?[1]).unwrap()
-    } else {
-        None
-    }
-}
-
-fn make_item_set(data: &Value, label: &str) -> Value {
-    json!({
-        "items": data["items"].as_array().unwrap().iter().map(|x| json!({"id": x["id"].as_str(), "count": 1})).collect::<Vec<Value>>(),
-        "type": format!("{} ({:.2}% - {} games)", label, data["winPercent"].as_f64().unwrap() * 100., data["games"].as_u64().unwrap())
-    })
-}
-
-fn make_item_set_from_list(list: &Vec<u32>, label: &str, key: &str, data: &Value) -> Value {
-    json!({
-        "items": list.iter().map(|x| json!({"id": x.to_string(), "count": 1})).collect::<Vec<Value>>(),
-        "type": format!("{} {}", label, data["skills"][key]["order"].as_array().unwrap().iter()
-                    .map(|x| data["skills"]["skillInfo"].as_array().unwrap()[x.as_str().unwrap().parse::<usize>().unwrap()-1]["key"].as_str().unwrap())
-                    .collect::<Vec<&str>>().join("."))
-    })
-}
-
-fn write_item_set(
-    id: &str,
-    name: &str,
-    pos: &str,
-    ver: &str,
-    path: &PathBuf,
-    client: &reqwest::Client,
-) {
-    info!("Retrieving data for {} at {}", name, pos);
-    let data = get_champ_data(id, pos, client);
-
-    match data {
-        Some(data) => {
-            let mut item_set = ItemSet {
-                title: format!(
-                    "CGG {} {} - {:.2}%",
-                    pos,
-                    ver,
-                    data["stats"]["winRate"].as_f64().unwrap() * 100.
-                ),
-                type_: "custom".to_string(),
-                map: "any".to_string(),
-                mode: "any".to_string(),
-                priority: false,
-                sortrank: 0,
-                blocks: vec![],
-            };
-
-            for (label, path) in ITEM_TYPES.iter() {
-                if !data[&path[0]].get(&path[1]).is_none() {
-                    item_set
-                        .blocks
-                        .push(make_item_set(&data[&path[0]][&path[1]], label));
-                }
-            }
-
-            item_set.blocks.push(make_item_set_from_list(
-                &CONSUMABLES.to_vec(),
-                "Consumables | Frequent:",
-                "mostGames",
-                &data,
-            ));
-            item_set.blocks.push(make_item_set_from_list(
-                &TRINKETS.to_vec(),
-                "Trinkets | Wins:",
-                "highestWinPercent",
-                &data,
-            ));
-
-            info!("Writing item set for {} at {}", name, pos);
-            fs::write(
-                path.join(format!("CGG_{}_{}.json", id, pos)),
-                serde_json::to_string_pretty(&item_set).unwrap(),
-            ).unwrap();
-        }
-        None => {
-            error!("Can't get data for {} at {}", id, pos);
-        }
-    }
-}
-
 fn lol_champ_dir() -> Result<PathBuf, Error> {
     let hklm = RegKey::predef(winreg::enums::HKEY_LOCAL_MACHINE);
     let node = hklm.open_subkey(r"SOFTWARE\WOW6432Node\Riot Games\RADS");