use axum::{Json, extract::State, http::HeaderMap};
use koucha::db::User as DbUser;
use reqwest::StatusCode;
use serde::{Serialize, Deserialize};

use crate::{
  AppState, routes::{ApiError, ApiResult, ApiResponse}, types::User
};

#[derive(Deserialize)]
pub struct Input { }
#[derive(Serialize, Deserialize)]
pub struct Output {
  users: Vec<User>,
}

pub async fn handler(
  headers: HeaderMap,
  State(state): State<AppState>,
  Json(_body): Json<Input>,
) -> ApiResult<Output> {
  let dbusers = DbUser::get_all(state.adapter.get_pool())
    .await.map_err(|_e| {
      // TODO: Logging
      ApiError { 
        status: StatusCode::INTERNAL_SERVER_ERROR,
        error: "InternalError",
        message: "Error getting all users from DB.".to_string(),
      }
    })?;

  let users: Vec<User> = dbusers.iter().map(|u| User {
    name: u.name().to_string(),
  }).collect();

  Ok(ApiResponse(StatusCode::OK, Output { users }))
}