Flesh out api and add tests

.gitignore

@@ -1 +1,2 @@
 /target
+.env

Cargo.lock

@@ -107,6 +107,7 @@ dependencies = [
  "serde",
  "serde_json",
  "thiserror",
+ "tokio",
  "url",
 ]
 
@@ -1093,9 +1094,21 @@ dependencies = [
  "mio",
  "pin-project-lite",
  "socket2",
+ "tokio-macros",
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "tokio-macros"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tokio-native-tls"
 version = "0.3.1"

Cargo.toml

@@ -10,4 +10,5 @@ reqwest = { version = "0.12.15", features = ["json"] }
 serde = { version = "1.0.219", features = ["derive"] }
 serde_json = "1.0.140"
 thiserror = "2.0.12"
+tokio = { version = "1.44.2", features = ["macros", "rt"] }
 url = "2.5.4"

src/lib.rs

@@ -1,6 +1,9 @@
 use crate::models::Response;
+use crate::models::eta::{EtaRequest, EtaResp};
+use crate::models::follow::{FollowRequest, FollowResp};
 use crate::models::route::{RouteRequest, RouteResp};
 use reqwest::{Client, Url};
+use serde::{Deserialize, Serialize};
 use thiserror::Error;
 
 pub mod models;
@@ -32,18 +35,19 @@ impl CTAClient {
         }
     }
 
-    pub async fn fetch_route(&mut self, route: &str) -> Result<RouteResp, Error> {
-        let req = RouteRequest {
-            rt: route.to_string(),
-            key: self.key.clone(),
-        };
+    pub async fn make_request<T: Serialize, V: for<'a> Deserialize<'a>>(
+        &mut self,
+        endpoint: &str,
+        req: T,
+    ) -> Result<V, Error> {
+        let url = self.url.join(endpoint)?;
 
-        let url = self.url.join("ttpositions.aspx")?;
-        let resp: Response<RouteResp> = self
+        let resp: Response<V> = self
             .client
             .get(url)
             .query(&req)
             .query(&[("outputType", "JSON")])
+            .query(&[("key", &self.key)])
             .send()
             .await?
             .json()
@@ -51,4 +55,62 @@ impl CTAClient {
 
         Ok(resp.ctatt)
     }
+
+    pub async fn fetch_route(&mut self, route: &str) -> Result<RouteResp, Error> {
+        let req = RouteRequest {
+            rt: route.to_string(),
+        };
+
+        self.make_request("ttpositions.aspx", req).await
+    }
+
+    pub async fn fetch_eta(&mut self, eta_request: EtaRequest) -> Result<EtaResp, Error> {
+        self.make_request("ttarrivals.aspx", eta_request).await
+    }
+
+    pub async fn fetch_train_schedule(&mut self, run_number: u32) -> Result<FollowResp, Error> {
+        self.make_request("ttfollow.aspx", FollowRequest { run_number })
+            .await
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::CTAClient;
+    use crate::models::eta::EtaRequest;
+
+    pub fn client() -> CTAClient {
+        let token = std::env::var("CTA_TOKEN").expect("Missing CTA_TOKEN");
+
+        CTAClient::new(token)
+    }
+
+    #[tokio::test]
+    pub async fn test_fetch_eta() {
+        let mut client = client();
+
+        let _eta = client
+            .fetch_eta(EtaRequest {
+                mapid: None,
+                stpid: Some(30111),
+                max: Some(1),
+                rt: None,
+            })
+            .await
+            .unwrap();
+    }
+
+    #[tokio::test]
+    pub async fn test_fetch_route() {
+        let mut client = client();
+
+        let _eta = client.fetch_route("blue").await.unwrap();
+    }
+
+    #[tokio::test]
+    pub async fn test_fetch_train_schedule() {
+        let mut client = client();
+
+        let _train = client.fetch_train_schedule(109).await.unwrap();
+    }
 }

src/models/eta.rs

@@ -0,0 +1,50 @@
+use crate::models::Ctatt;
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Debug)]
+pub struct EtaRequest {
+    pub mapid: Option<u32>,
+    pub stpid: Option<u32>,
+    pub max: Option<u32>,
+    pub rt: Option<String>,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct EtaResp {
+    #[serde(flatten)]
+    pub header: Ctatt,
+    pub eta: Vec<Eta>,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct Eta {
+    #[serde(rename = "staId")]
+    pub sta_id: String,
+    #[serde(rename = "stpId")]
+    pub stp_id: String,
+    #[serde(rename = "staNm")]
+    pub sta_nm: String,
+    #[serde(rename = "stpDe")]
+    pub stp_de: String,
+    pub rn: String,
+    pub rt: String,
+    #[serde(rename = "destSt")]
+    pub dest_st: String,
+    #[serde(rename = "destNm")]
+    pub tr_dr: String,
+    pub prdt: String,
+    #[serde(rename = "arrT")]
+    pub arr_t: String,
+    #[serde(rename = "isApp")]
+    pub is_app: String,
+    #[serde(rename = "isSch")]
+    pub is_sch: String,
+    #[serde(rename = "isDly")]
+    pub is_dly: String,
+    #[serde(rename = "isFlt")]
+    pub is_flt: String,
+    pub flags: Option<String>,
+    pub lat: String,
+    pub lon: String,
+    pub heading: String,
+}

src/models/follow.rs

@@ -0,0 +1,53 @@
+use crate::models::Ctatt;
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Debug)]
+pub struct FollowRequest {
+    #[serde(rename = "runnumber")]
+    pub run_number: u32,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct Position {
+    pub lat: String,
+    pub lon: String,
+    pub heading: String,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct ScheduledStop {
+    #[serde(rename = "staId")]
+    pub sta_id: String,
+    #[serde(rename = "stpId")]
+    pub stp_id: String,
+    #[serde(rename = "staNm")]
+    pub sta_nm: String,
+    #[serde(rename = "stpDe")]
+    pub stp_de: String,
+    pub rn: String,
+    pub rt: String,
+    #[serde(rename = "destSt")]
+    pub dest_st: String,
+    #[serde(rename = "destNm")]
+    pub tr_dr: String,
+    pub prdt: String,
+    #[serde(rename = "arrT")]
+    pub arr_t: String,
+    #[serde(rename = "isApp")]
+    pub is_app: String,
+    #[serde(rename = "isSch")]
+    pub is_sch: String,
+    #[serde(rename = "isDly")]
+    pub is_dly: String,
+    #[serde(rename = "isFlt")]
+    pub is_flt: String,
+    pub flags: Option<String>,
+}
+
+#[derive(Deserialize, Debug)]
+pub struct FollowResp {
+    #[serde(flatten)]
+    pub header: Ctatt,
+    pub position: Position,
+    pub eta: Vec<ScheduledStop>,
+}

src/models/mod.rs

@@ -1,3 +1,5 @@
+pub mod eta;
+pub mod follow;
 pub mod route;
 pub mod train;
 

src/models/route.rs

@@ -5,7 +5,6 @@ use serde::{Deserialize, Serialize};
 #[derive(Serialize, Debug)]
 pub struct RouteRequest {
     pub rt: String,
-    pub key: String,
 }
 
 #[derive(Deserialize, Debug)]