use actix_web::{web, HttpResponse};
use serde::Deserialize;

use shanty_db::queries;

use crate::error::ApiError;
use crate::state::AppState;

fn default_limit() -> u64 { 50 }

#[derive(Deserialize)]
pub struct SearchParams {
    q: Option<String>,
    #[serde(default = "default_limit")]
    limit: u64,
    #[serde(default)]
    offset: u64,
}

pub fn configure(cfg: &mut web::ServiceConfig) {
    cfg.service(
        web::resource("/tracks")
            .route(web::get().to(list_tracks)),
    )
    .service(
        web::resource("/tracks/{id}")
            .route(web::get().to(get_track)),
    );
}

async fn list_tracks(
    state: web::Data<AppState>,
    query: web::Query<SearchParams>,
) -> Result<HttpResponse, ApiError> {
    let tracks = if let Some(ref q) = query.q {
        queries::tracks::search(state.db.conn(), q).await?
    } else {
        queries::tracks::list(state.db.conn(), query.limit, query.offset).await?
    };
    Ok(HttpResponse::Ok().json(tracks))
}

async fn get_track(
    state: web::Data<AppState>,
    path: web::Path<i32>,
) -> Result<HttpResponse, ApiError> {
    let id = path.into_inner();
    let track = queries::tracks::get_by_id(state.db.conn(), id).await?;
    Ok(HttpResponse::Ok().json(track))
}