use crate::{
    app::AppState,
    error::AppResult,
    models::profile::{level_for_xp, XP_THRESHOLDS},
    services::profile as profile_svc,
};
use axum::{extract::State, Json};
use serde_json::{json, Value};

pub async fn get_profile(State(state): State<AppState>) -> AppResult<Json<Value>> {
    let profile = profile_svc::get_active_profile(&state.pool).await?;
    let computed_level = level_for_xp(profile.xp);

    let next_level = computed_level + 1;
    let xp_for_next = if next_level as usize <= XP_THRESHOLDS.len() {
        XP_THRESHOLDS[next_level as usize - 1]
    } else {
        let overflow_base = XP_THRESHOLDS.last().copied().unwrap_or(0);
        let levels_past = next_level - XP_THRESHOLDS.len() as i64;
        overflow_base + levels_past * 2500
    };
    let xp_to_next = (xp_for_next - profile.xp).max(0);

    Ok(Json(json!({
        "id": profile.id,
        "username": profile.username,
        "level": computed_level,
        "xp": profile.xp,
        "xp_to_next_level": xp_to_next,
        "xp_for_next_level": xp_for_next,
        "created_at": profile.created_at,
        "updated_at": profile.updated_at,
    })))
}