Perses finale (#558)

* Move v2 routes to v2 module

* Remove v1 routes and make it run

* Make config declaration consistent, add v3 module

* Readd API v1 msgs

* Fix imports

src/routes/v2/statistics.rs

@@ -0,0 +1,88 @@
+use crate::routes::ApiError;
+use actix_web::{get, web, HttpResponse};
+use serde_json::json;
+use sqlx::PgPool;
+
+pub fn config(cfg: &mut web::ServiceConfig) {
+    cfg.service(get_stats);
+}
+
+#[get("statistics")]
+pub async fn get_stats(
+    pool: web::Data<PgPool>,
+) -> Result<HttpResponse, ApiError> {
+    let projects = sqlx::query!(
+        "
+        SELECT COUNT(id)
+        FROM mods
+        WHERE status = ANY($1)
+        ",
+        &*crate::models::projects::ProjectStatus::iterator()
+            .filter(|x| x.is_searchable())
+            .map(|x| x.to_string())
+            .collect::<Vec<String>>(),
+    )
+    .fetch_one(&**pool)
+    .await?;
+
+    let versions = sqlx::query!(
+        "
+        SELECT COUNT(v.id)
+        FROM versions v
+        INNER JOIN mods m on v.mod_id = m.id AND m.status = ANY($1)
+        WHERE v.status = ANY($2)
+        ",
+        &*crate::models::projects::ProjectStatus::iterator()
+            .filter(|x| x.is_searchable())
+            .map(|x| x.to_string())
+            .collect::<Vec<String>>(),
+        &*crate::models::projects::VersionStatus::iterator()
+            .filter(|x| x.is_listed())
+            .map(|x| x.to_string())
+            .collect::<Vec<String>>(),
+    )
+    .fetch_one(&**pool)
+    .await?;
+
+    let authors = sqlx::query!(
+        "
+        SELECT COUNT(DISTINCT u.id)
+        FROM users u
+        INNER JOIN team_members tm on u.id = tm.user_id AND tm.accepted = TRUE
+        INNER JOIN mods m on tm.team_id = m.team_id AND m.status = ANY($1)
+        ",
+        &*crate::models::projects::ProjectStatus::iterator()
+            .filter(|x| x.is_searchable())
+            .map(|x| x.to_string())
+            .collect::<Vec<String>>(),
+    )
+    .fetch_one(&**pool)
+    .await?;
+
+    let files = sqlx::query!(
+        "
+        SELECT COUNT(f.id) FROM files f
+        INNER JOIN versions v on f.version_id = v.id AND v.status = ANY($2)
+        INNER JOIN mods m on v.mod_id = m.id AND m.status = ANY($1)
+        ",
+        &*crate::models::projects::ProjectStatus::iterator()
+            .filter(|x| x.is_searchable())
+            .map(|x| x.to_string())
+            .collect::<Vec<String>>(),
+        &*crate::models::projects::VersionStatus::iterator()
+            .filter(|x| x.is_listed())
+            .map(|x| x.to_string())
+            .collect::<Vec<String>>(),
+    )
+    .fetch_one(&**pool)
+    .await?;
+
+    let json = json!({
+        "projects": projects.count,
+        "versions": versions.count,
+        "authors": authors.count,
+        "files": files.count,
+    });
+
+    Ok(HttpResponse::Ok().json(json))
+}