use actix_web::{get, web, HttpResponse, Scope};

use fedimovies_config::Config;
use fedimovies_models::{
    database::{get_database_client, DbPool},
    instances::queries::{get_peer_count, get_peers},
    posts::queries::get_local_post_count,
    users::queries::get_user_count,
};

use crate::mastodon_api::errors::MastodonError;

use super::types::InstanceInfo;

/// https://docs.joinmastodon.org/methods/instance/#v1
#[get("")]
async fn instance_view(
    config: web::Data<Config>,
    db_pool: web::Data<DbPool>,
) -> Result<HttpResponse, MastodonError> {
    let db_client = &**get_database_client(&db_pool).await?;
    let user_count = get_user_count(db_client).await?;
    let post_count = get_local_post_count(db_client).await?;
    let peer_count = get_peer_count(db_client).await?;
    let instance = InstanceInfo::create(config.as_ref(), user_count, post_count, peer_count);
    Ok(HttpResponse::Ok().json(instance))
}

#[get("/peers")]
async fn instance_peers_view(db_pool: web::Data<DbPool>) -> Result<HttpResponse, MastodonError> {
    let db_client = &**get_database_client(&db_pool).await?;
    let peers = get_peers(db_client).await?;
    Ok(HttpResponse::Ok().json(peers))
}

pub fn instance_api_scope() -> Scope {
    web::scope("/api/v1/instance")
        .service(instance_view)
        .service(instance_peers_view)
}