#!/usr/bin/env perl

use v5.30.0;

use strict;
use warnings;

use Data::Dumper;
use JSON;

use Mojo::URL;

use DoctorKarma::Config;
use DoctorKarma::Telegram;
use DoctorKarma::Logger;
use DoctorKarma::DB;

use DoctorKarma::DAO::User;
use DoctorKarma::Model::User;

my $config = DoctorKarma::Config->new;
my $logger = DoctorKarma::Logger->new;
my $telegram =
  DoctorKarma::Telegram->new( telegram_token => $config->telegram_token );
my $db = DoctorKarma::DB->dbh;

while (1) {
    my $updates = $telegram->get_updates;
    for my $update ( $updates->@* ) {
        my $message = $update->{message};
        if ( defined $message ) {
            proccess_new_message($message);
        }
    }
}

sub proccess_new_message {
    my $message          = shift;
    my $reply_to_message = $message->{reply_to_message};

    update_user($message);
    if ( defined $message->{text} ) {
        process_message_with_text($message);
    }
}

sub process_message_with_text {
    my $message = shift;

    my $text             = $message->{text};
    my $username         = $message->{from}{username};
    my $user_id          = $message->{from}{id};
    my $first_name       = $message->{from}{first_name};
    my $reply_to_message = $message->{reply_to_message};

    my $log_username = defined $username ? "\@$username" : '';
    $logger->log_info(
        "'$message->{text}' received from $first_name:$log_username:$user_id");
    if ( $text eq '+1' && defined $reply_to_message ) {
        add_karma_to_replied_message_user($message);
    }
    if ($text eq '-1' && defined $reply_to_message) {
        substract_karma_to_replied_message_user ($message);
    }
}

sub substract_karma_to_replied_message_user {
    my $message = shift;
    my $chat_id = $message->{chat}{id};

    my $reply_to_message  = $message->{reply_to_message};
    my $user_giving_id    = $message->{from}{id};
    my $user_receiving_id = $reply_to_message->{from}{id};

    my $user_dao           = DoctorKarma::DAO::User->new( dbh => $db );
    my $sending_karma_user = $user_dao->recover_id( id => $user_giving_id );

    if ( $user_giving_id == $user_receiving_id ) {
        $logger->log_info(<<"EOF");
User @{[$sending_karma_user->first_name]}:@{[$sending_karma_user->username]}:@{[$sending_karma_user->id_user]} tried to substract karma to itself, refusing.
EOF
        $telegram->send_message(
            chat_id => $chat_id,
            text    => 'You cannot substract karma to yourself'
        );
        return;
    }

    my $receiving_karma_user =
      $user_dao->recover_id( id => $user_receiving_id );
    if ( !defined $receiving_karma_user ) {
        update_user($reply_to_message);
        $receiving_karma_user =
          $user_dao->recover_id( id => $user_receiving_id );
    }
    $user_dao->substract_1_karma( user => $receiving_karma_user );
    my $id_receptor           = $receiving_karma_user->id_user;
    my $receptor_telegram_url = Mojo::URL->new('tg://user');
    $receptor_telegram_url->query( id => $id_receptor );
    $telegram->send_message(
        chat_id => $chat_id,
        text    =>
"[@{[$receiving_karma_user->first_name]}]($receptor_telegram_url) has now @{[$receiving_karma_user->karma]} of karma\\."
    );
}

sub add_karma_to_replied_message_user {
    my $message = shift;
    my $chat_id = $message->{chat}{id};

    my $reply_to_message  = $message->{reply_to_message};
    my $user_giving_id    = $message->{from}{id};
    my $user_receiving_id = $reply_to_message->{from}{id};

    my $user_dao           = DoctorKarma::DAO::User->new( dbh => $db );
    my $sending_karma_user = $user_dao->recover_id( id => $user_giving_id );

    if ( $user_giving_id == $user_receiving_id ) {
        $logger->log_info(<<"EOF");
User @{[$sending_karma_user->first_name]}:@{[$sending_karma_user->username]}:@{[$sending_karma_user->id_user]} tried to give karma to itself, refusing.
EOF
        $telegram->send_message(
            chat_id => $chat_id,
            text    => 'You cannot give karma to yourself'
        );
        return;
    }

    my $receiving_karma_user =
      $user_dao->recover_id( id => $user_receiving_id );
    if ( !defined $receiving_karma_user ) {
        update_user($reply_to_message);
        $receiving_karma_user =
          $user_dao->recover_id( id => $user_receiving_id );
    }
    $user_dao->add_1_karma( user => $receiving_karma_user );
    my $id_receptor           = $receiving_karma_user->id_user;
    my $receptor_telegram_url = Mojo::URL->new('tg://user');
    $receptor_telegram_url->query( id => $id_receptor );
    $telegram->send_message(
        chat_id => $chat_id,
        text    =>
"[@{[$receiving_karma_user->first_name]}]($receptor_telegram_url) has now @{[$receiving_karma_user->karma]} of karma\\."
    );
}

sub update_user {
    my $message = shift;

    my $user_id    = $message->{from}{id};
    my $username   = $message->{from}{username};
    my $first_name = $message->{from}{first_name};

    my $user_dao = DoctorKarma::DAO::User->new( dbh => $db );
    my $user     = $user_dao->recover_id( id => $user_id );
    if ( !defined $user ) {
        $user = DoctorKarma::Model::User->new(
            id_user => $user_id,
            ( defined $username ) ? ( username => $username ) : (),
            karma => 0
        );
        $user_dao->store( user => $user );
    }
    if ( ( $user->username // '' ) ne ( $username // '' ) ) {
        if ( defined $username ) {
            my $user_already_with_username =
              $user_dao->recover_username( username => $username );
            $user_dao->update_username(
                user     => $user_already_with_username,
                username => undef,
            ) if defined $user_already_with_username;
        }
        $user_dao->update_username(
            user     => $user,
            username => $username
        );
    }
    if ( ( $user->first_name // '' ) ne $first_name ) {
        $user_dao->update_firstname(
            user       => $user,
            first_name => $first_name
        );
    }
}