feat: a bunch of things

src/nnid/person_exists.rs

@@ -0,0 +1,58 @@
+use rocket::{get, State};
+use sqlx::Row;
+use crate::error::{Error, Errors};
+use crate::Pool;
+use crate::xml::Xml;
+
+#[get("/v1/api/people/<username>")]
+pub async fn person_exists(database: &State<Pool>, username: &str) -> Result<(), Errors<'static>>{
+    let database = database.inner();
+
+    let exists: bool = sqlx::query_as!(
+        bool,
+        "SELECT EXISTS(SELECT 1 FROM users.users WHERE username = ? )",
+        username
+    ).fetch_one(database)
+        .await
+        .unwrap_or(true);
+
+    if exists {
+        Err(
+            Errors{
+                error: &[
+                    Error{
+                        code: "0100",
+                        message: "Account ID already exists"
+                    }
+                ],
+            }
+        )
+    } else {
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod test{
+    use crate::error::{Error, Errors};
+    use crate::xml::serialize_with_version;
+
+    #[test]
+    fn test(){
+        let val = Errors{
+            error: &[
+                Error{
+                    code: "0100",
+                    message: "Account ID already exists"
+                }
+            ],
+        };
+
+        let enc = serialize_with_version(&val).unwrap();
+
+        assert_eq!(
+            enc.as_ref(),
+            "<?xml version=\"1.0\"?><errors><error><code>0100</code><message>Account ID already exists</message></error></errors>"
+        )
+    }
+}