use teloxide::prelude::*;
use chrono::Local;
use std::ops::Add;
use std::cmp::Ordering::Equal;
use std::str;
use crate::telegram_utils::*;
mod database;

fn change_day(last_day: &str) -> bool{
    last_day.cmp(&Local::now().add(chrono::TimeDelta::hours(2)).format("%Y-%m-%d").to_string()) != Equal
}

fn check_pole(group_id: &str) -> bool {
    let data: database::DatabasePole = database::DatabasePole::get_database();
    let slast_pole = match data.last_pole(group_id) {
        Ok(s) => s,
        Err(_e) => return true,
    };
    change_day(&slast_pole)
}

fn do_pole(group_id: &str, user_id: &str, user_name: &str){
    let data: database::DatabasePole = database::DatabasePole::get_database();
    data.write_points(group_id, user_id, user_name, &Local::now().format("%Y-%m-%d").to_string(),Rewards::POLE as i64);
}

fn do_plata(group_id: &str, user_id: &str, user_name: &str){
    let data: database::DatabasePole = database::DatabasePole::get_database();
    data.write_points(group_id, user_id, user_name, &Local::now().format("%Y-%m-%d").to_string(),Rewards::PLATA as i64);
}

fn do_fail(group_id: &str, user_id: &str, user_name: &str){
    let data: database::DatabasePole = database::DatabasePole::get_database();
    data.write_points(group_id, user_id, user_name, &Local::now().format("%Y-%m-%d").to_string(),Rewards::FAIL as i64);
}

fn check_user_points(msg: &teloxide::prelude::Message, rw: Rewards) -> bool{
    let data: database::DatabasePole = database::DatabasePole::get_database();
    let ret = data.check_user_pole(&msg.chat.id.to_string(),
        &msg.from().unwrap().id.to_string(),
        &Local::now().format("%Y-%m-%d").to_string());
    check_group_points(msg, rw) && (ret == 0)
}

enum Rewards {
    POLE = 3,
    PLATA = 2,
    FAIL = 1,
}

fn check_group_points(msg: &teloxide::prelude::Message, rw: Rewards) -> bool {
    let data: database::DatabasePole = database::DatabasePole::get_database();
    let ret = data.check_group_points(&msg.chat.id.to_string(),
        &Local::now().format("%Y-%m-%d").to_string());
    match rw {
        Rewards::PLATA => ret == (Rewards::POLE as i64),
        Rewards::FAIL => ret == (Rewards::PLATA as i64 + Rewards::POLE as i64),
        _=> false,
    }
}

pub async fn exe_pole(
    msg: Message,
    bot: Bot,
) -> anyhow::Result<()>{
    let text_lower = match msg.text(){
        Some(t) => t.to_lowercase(),
        None => return Ok(()),
    };
    if pole_conditions(msg.clone()){
        do_pole(&msg.chat.id.to_string(),
            &*msg.from().unwrap().id.to_string(),
            &get_alias(&msg));
        bot.send_message(msg.chat.id, format!("{} ha hecho la pole",get_alias(&msg))).await?;
    } else if plata_conditions(msg.clone()) {
        do_plata(&msg.chat.id.to_string(),
        &*msg.from().unwrap().id.to_string(),
        &get_alias(&msg));
        bot.send_message(msg.chat.id, format!("{} ha hecho la plata", get_alias(&msg))).await?;
    } else if bronce_conditions(msg.clone()) {
        do_fail(&msg.chat.id.to_string(),
        &*msg.from().unwrap().id.to_string(),
        &get_alias(&msg));
        bot.send_message(msg.chat.id, format!("{} buen fail", get_alias(&msg))).await?;
    }
    return Ok(());
}

fn pole_conditions(msg: Message) -> bool{
    let text_lower = match msg.text(){
        Some(t) => t.to_lowercase(),
        None => return false,
    };
    if text_lower.contains("pole") || text_lower.contains("oro") {
        if check_pole(&msg.chat.id.to_string()) {
            return true;
        }
    }
    false
}

fn plata_conditions(msg: Message) -> bool{
    let text_lower = match msg.text(){
        Some(t) => t.to_lowercase(),
        None => return false,
    };
    if text_lower.contains("plata") || text_lower.contains("subpole") {
        if check_user_points(&msg, Rewards::PLATA)  {
            return true;
        }
    }
    false
}

fn bronce_conditions(msg: Message) -> bool{
    let text_lower = match msg.text(){
        Some(t) => t.to_lowercase(),
        None => return false,
    };
    if text_lower.contains("fail") || text_lower.contains("bronce") {
        if check_user_points(&msg, Rewards::FAIL) {
            return true;
        }
    }
    false
}

pub fn get_top(msg: Message, bot: Bot) -> <Bot as Requester>::SendMessage{
    let db = database::DatabasePole::get_database();
    let top = db.get_top_users(&msg.chat.id.0.to_string());
    let mut repl = String::new();
    for u in top {
        repl.push_str(&(u.1 + ": " + &u.0.to_string() + " puntos\n"));
    }
    bot.send_message(msg.chat.id, format!("{}", repl))
}

#[cfg(test)]
#[test]
fn compare_dates(){
    assert_eq!(false, change_day("2020-01-01"));
    assert_eq!(true, change_day("3025-01-01"));
}