finally auto-generating the offered IDs

src/db/doll.rs

@@ -18,6 +18,22 @@ pub async fn get(mut db: DollTagsDb, ident: i64) -> sqlx::Result<Option<DollProf
 	.fetch_optional(&mut **db).await
 }
 
+pub async fn check_ids(mut db: DollTagsDb, idents: &Vec<i64>) -> sqlx::Result<Vec<i64>> {
+	let idents_sql_input = idents.iter().map(|_| "?").collect::<Vec<&str>>().join(", ");
+
+	let sql = format!(
+		r#"select id from doll_profiles where id in ({})"#,
+		idents_sql_input
+	);
+	let mut query = sqlx::query_scalar(&sql);
+
+	for ident in idents {
+		query = query.bind(ident);
+	}
+
+	query.fetch_all(&mut **db).await
+}
+
 pub async fn create(mut db: DollTagsDb, doll: CreateDollProfile<'_>) -> sqlx::Result<i64> {
 	sqlx::query!(
 		r#"

src/main.rs

@@ -2,9 +2,10 @@
 extern crate rocket;
 use std::collections::HashMap;
 
-use db::doll;
+use db::doll::{self, check_ids};
 use db::schema::{CreateDollProfile, DollTags, DollTagsDb};
 use regex::Regex;
+use rng::generate_ids;
 use rocket::form::Form;
 use rocket::fs::{relative, FileServer};
 use rocket::response::Redirect;
@@ -37,8 +38,18 @@ fn index() -> Template {
 }
 
 #[get("/register")]
-fn show_register() -> Template {
-	Template::render("register", context! {})
+async fn show_register(db: DollTagsDb) -> Template {
+	let mut ids_bundle = generate_ids();
+	let occupied_ids = check_ids(db, &ids_bundle).await.expect("fuck");
+	ids_bundle.retain(|&id| !occupied_ids.contains(&id));
+	let ids = ids_bundle.iter().take(5).collect::<Vec<&i64>>();
+
+	Template::render(
+		"register",
+		context! {
+			ids
+		},
+	)
 }
 
 // TODO: Validation

templates/register.html.tera

@@ -34,11 +34,9 @@
 					<p>Or pick one of those pre-generated ones</p>
 
 					<div id="pregen_ids">
-						<button type="button">720-812</button>
-						<button type="button">423-158</button>
-						<button type="button">863-633</button>
-						<button type="button">139-317</button>
-						<button type="button">848-339</button>
+						{% for id in ids %}
+						<button type="button">{{id | pretty_id}}</button>
+						{% endfor %}
 					</div>
 				</div>
 			</div>