1 files changed, 29 insertions, 0 deletions
diff --git a/src/orly.rs b/src/orly.rs
index cd8b645..0e34e5c 100644
--- a/src/orly.rs
+++ b/src/orly.rs
@@ -1,8 +1,16 @@
 use crate::http_client::HttpClient;
 use anyhow::{bail, Result};
+use serde::Deserialize;
 
 pub const PROFILE_URL: &str = "https://learning.oreilly.com/profile/";
 
+/// Minimal subset of the book that we care about.
+#[derive(Debug, Deserialize)]
+pub struct BookInfo {
+    pub title: String,
+    pub web_url: String,
+}
+
 /// Check whether cookies keep us logged in by fetching the profile page.
 /// Returns:
 /// - Ok(true)  => HTTP 200 (assume logged in)
@@ -20,3 +28,24 @@ pub async fn check_login(client: &HttpClient) -> Result<bool> {
         bail!("Profile request returned unexpected status {}", status)
     }
 }
+
+/// Build the v1 API URL for the book.
+pub fn book_api_url(bookid: &str) -> String {
+    format!("https://learning.oreilly.com/api/v1/book/{bookid}")
+}
+
+/// Fetch book metadata from the website.
+pub async fn fetch_book_info(client: &HttpClient, bookid: &str) -> Result<BookInfo> {
+    let url = book_api_url(bookid);
+    let res = client.client().get(url).send().await?;
+    let status = res.status();
+
+    if status == 200 {
+        let info = res.json::<BookInfo>().await?;
+        return Ok(info);
+    }
+    if status == 404 {
+        bail!("Book not found (HTTP 404). Please double-check the book ID provided")
+    }
+    bail!("Got status: {}", status)
+}