use skynet_discord_bot::{db_init, get_config, Accounts, Config, DataBase};
use std::{process, sync::Arc};

use serde::Deserialize;
use serenity::{
  async_trait,
  client::{Context, EventHandler},
  model::{
    gateway::{GatewayIntents, Ready},
    id::GuildId,
  },
  Client,
};
use sqlx::{Pool, Sqlite};

use tokio::sync::RwLock;

#[tokio::main]
async fn main() {
  let config = get_config();
  let db = match db_init(&config).await {
    Ok(x) => x,
    Err(_) => return,
  };

  // Intents are a bitflag, bitwise operations can be used to dictate which intents to use
  let intents = GatewayIntents::GUILDS | GatewayIntents::GUILD_MESSAGES | GatewayIntents::MESSAGE_CONTENT | GatewayIntents::GUILD_MEMBERS;
  // Build our client.
  let mut client = Client::builder(&config.discord_token, intents)
    .event_handler(Handler {})
    .await
    .expect("Error creating client");

  {
    let mut data = client.data.write().await;

    data.insert::<Config>(Arc::new(RwLock::new(config)));
    data.insert::<DataBase>(Arc::new(RwLock::new(db)));
  }

  // Finally, start a single shard, and start listening to events.
  //
  // Shards will automatically attempt to reconnect, and will perform
  // exponential backoff until it reconnects.
  if let Err(why) = client.start().await {
    println!("Client error: {:?}", why);
  }
}

struct Handler;
#[async_trait]
impl EventHandler for Handler {
  async fn ready(&self, ctx: Context, ready: Ready) {
    println!("{} is connected!", ready.user.name);

    fetch_accounts(&ctx).await;

    process::exit(0);
  }
}

#[derive(Debug, Deserialize)]
pub struct DiscordResult {
  discord: String,
  wolves_id: String,
}
async fn fetch_accounts(ctx: &Context) {
  let config_lock = {
    let data_read = ctx.data.read().await;
    data_read.get::<Config>().expect("Expected Config in TypeMap.").clone()
  };
  let config = config_lock.read().await;

  let db_lock = {
    let data_read = ctx.data.read().await;
    data_read.get::<DataBase>().expect("Expected Config in TypeMap.").clone()
  };

  let db = db_lock.read().await;

  // handle wolves api here

  // get from skynet for the compsoc server only
  let url = format!("{}/ldap/discord?auth={}", &config.ldap_api, &config.auth);
  if let Ok(result) = surf::get(url).recv_json::<Vec<DiscordResult>>().await {
    for user in result {
      add_users_skynet(&db, &config.skynet_server, &user).await;
    }
  }
}

pub async fn add_users_skynet(db: &Pool<Sqlite>, server: &GuildId, user: &DiscordResult) {
  match sqlx::query_as::<_, Accounts>(
    "
      UPDATE accounts
      SET discord = ?
      WHERE server = ? AND  wolves_id = ?
    ",
  )
  .bind(&user.discord)
  .bind(*server.as_u64() as i64)
  .bind(&user.wolves_id)
  .fetch_optional(db)
  .await
  {
    Ok(_) => {}
    Err(e) => {
      println!("Failure to insert into {}  {:?}", server.as_u64(), user);
      println!("{:?}", e);
    }
  }
}