use axum::{extract::State, Json};
use serde_json::{json, Value};

use crate::{app::AppState, error::AppResult, services::settings as settings_svc};

fn defaults(settings: &std::collections::HashMap<String, String>) -> Value {
    json!({
        "difficulty": settings.get("difficulty").cloned().unwrap_or_else(|| "beginner".into()),
        "preferred_formation": settings.get("preferred_formation").cloned().unwrap_or_else(|| "4-4-2".into()),
    })
}

pub async fn get_settings(State(state): State<AppState>) -> AppResult<Json<Value>> {
    let settings = settings_svc::get_all(&state.pool).await?;
    Ok(Json(defaults(&settings)))
}

pub async fn put_settings(
    State(state): State<AppState>,
    Json(req): Json<Value>,
) -> AppResult<Json<Value>> {
    if let Some(difficulty) = req.get("difficulty").and_then(|v| v.as_str()) {
        settings_svc::upsert(&state.pool, "difficulty", difficulty).await?;
    }
    if let Some(formation) = req.get("preferred_formation").and_then(|v| v.as_str()) {
        settings_svc::upsert(&state.pool, "preferred_formation", formation).await?;
    }
    let settings = settings_svc::get_all(&state.pool).await?;
    Ok(Json(defaults(&settings)))
}