<?php
class Ai_model extends MO_Model
{
    protected $settings;

    public function __construct()
    {
        parent::__construct();
    }

    public function attack()
    {
        $this->parse_settings();

        if (!$this->settings['on']) {
            return 'AI is off';
        }

        $sql = "SELECT * FROM ai_villages WHERE attacked='0'";

        $q = $this->db->query($sql);

        $ai_village_not_attacked = $q->num_rows();

        $log = "ai_villages query returned " . $ai_village_not_attacked . " rows. \n";

        $ai_villages = $q->result_array();

        $attacking_num = $this->settings['max_attack_village_limit'];

        //determining how much will attack
        if ($this->settings['attack_village_rand']) {
            $a = rand(0, $this->settings['attack_village_rand']);
            
            $attacking_num -= $a;
        }

        $log .= $attacking_num . " villages attacking. \n";
        
        $reset = false;

        //resetting ai_villages's attack field if everything will be set to attacked
        if ($ai_village_not_attacked < $attacking_num) {
            $attacking_num = $ai_village_not_attacked;

            $reset = true;
        }

        //determining which villages are going to attack
        for ($i = 0; $i < $attacking_num; $i++) {
            $found = false;

            while (!$found) {
                foreach ($ai_villages as $row) {
                    $r = rand(1, 100);

                    if ($r > 50 && !isset($s[$row['id']])) {
                        $s[$row['id']] = true;
                        $data[] = $row;
                        $found = true;
                        break;
                    }
                }
            }
        }

        //saving to the db that they are attacked
        if (!$reset) {
            $sql = "UPDATE ai_villages SET attacked='1' WHERE ";

            $first = true;
            foreach ($data as $row) {
                if ($first) {
                    $first = false;
                } else {
                    $sql .= " OR ";
                }
    
                $sql .= "id='" . $row['id'] . "'";
            }

            $this->db->query($sql);
        } else {
            $sql = "UPDATE ai_villages SET attacked='0'";
            $this->db->query($sql);
            $log .= "ai_villages's attacked field reseted.\n";
        }

        //getting ai_units
        $sql = "SELECT * FROM ai_units";
        $q = $this->db->query($sql);
        $num_ai_units = $q->num_rows();
        $res = $q->result_array();

        if ($this->settings['ai_unit_max_diff'] < $num_ai_units) {
            $num = 0;
            $d = false;

            while ($num != $this->settings['ai_unit_max_diff']) {
                foreach ($res as $row) {
                    if (!isset($d[$row['id']])) {
                        $r = rand(1, 50);
                        if ($r > 50) {
                            $ai_units[] = $row;
                            $d[$row['id']] = true;
                            $num++;
                            break;
                        }
                    }
                }
            }
        } else {
            $ai_units = $res;
        }

        //adding villages to log
        $log .= "Attacking villages: \n";
        foreach ($data as $row) {
            $log .= $row['name'] . "(" .$row['X'] . " " .  $row['Y'] . ") \n";
        }

        //sending attackers
        foreach ($data as $row) {
            $sql = "SELECT map.X,map.Y,villages.*
	      FROM map
	      LEFT JOIN villages ON (map.villageid=villages.id AND map.type='3')
	      WHERE (map.type = 3 AND
	      map.X > '" . ($row['X'] - 24) . "' 
	      AND map.X < '" . ($row['X'] + 24) . "'
	      AND map.Y > '" . ($row['Y'] - 24) . "'
	      AND map.Y < '" . ($row['Y'] + 24) . "')";

            $q = $this->db->query($sql);

            //no villages in range
            if (!$q->num_rows()) {
                continue;
            }

            $log .= $row['name'] . " is attacking: \n";

            $res = $q->result_array();
            
            //sending attackers
            foreach ($res as $rrow) {
                if ($rrow['ai_on'] || $rrow['ai_flagged']) {
                    $log .= "Sending attackers to: " . $rrow['name'] . "[" . $rrow['id'] . "]";
                    $log .= " (S: " . $rrow['score'] . ")\n";
                    $log .= "Sent: \n";

                    foreach ($ai_units as $unit) {
                        $a = ($rrow['score'] / $unit['rate']) / $unit['per_score'];
                        $num = floor($a);

                        $log .= $unit['name'] . "->" . $num . "\n";

                        $send[] = array('unitid' => $unit['id'],
                'num' => $num);
                    }

                    $this->send_attack($send, $row, $rrow);
                }
            }
        }

        $this->load->helper('file');

        $f = './logs/ai_log/log_' . time() . '.txt';

        write_file($f, $log);

        return $log;
    }

    public function send_attack($send, $ai_village, $village)
    {
        $villageid = $village['id'];

        $sql = "SELECT max(attackid) AS attackid FROM attacks WHERE villageid='$villageid'";
        $q = $this->db->query($sql);

        $res = $q->row_array();

        if ($res['attackid']) {
            $atkid = ($res['attackid'] + 1);
        } else {
            $atkid = 1;
        }

        $first = true;
        $sql = "INSERT INTO attacks VALUES";
        foreach ($send as $row) {
            if ($first) {
                $first = false;
            } else {
                $sql .= ',';
            }

            $sql .= "(default, '$villageid', '$atkid', '" . $row['unitid'] . "', '" . $row['num']. "')";
        }

        $sql .= ";";

        $this->db->query($sql);

        //calculate distance
        $dist = sqrt(pow($ai_village['X'] - $village['X'], 2) + pow($ai_village['Y'] - $village['Y'], 2));

        //15 min 1 square
        $time = $dist * 900;
        $r = rand(3600, 10800);
        $end = $time + $r;

        //todo remove
        $end = 20;

        //attack random sides
        $dir = rand(1, 4);

        $ev['villageid'] = $villageid;
        $ev['slotid'] = 0;
        $ev['type'] = parent::EVENT_ATTACK;
        $ev['time'] = $end;
        $ev['data1'] = $atkid;
        $ev['data2'] = $dir;

        $this->add_event($ev);
    }

    public function parse_settings()
    {
        $sql = "SELECT * FROM ai_settings";

        $q = $this->db->query($sql);

        $res = $q->result_array();

        foreach ($res as $row) {
            $data[$row['setting']] = $row['value'];
        }

        $this->settings =  $data;
    }

    public function get_unit_list_drop_admin()
    {
        $sql = "SELECT * FROM ai_units";

        $q = $this->db->query($sql);

        $res = $q->result_array();

        $data[0] = 'Nothing';

        foreach ($res as $row) {
            $data[$row['id']] = $row['name'];
        }

        return $data;
    }

    public function list_units_admin()
    {
        $sql = "SELECT * FROM ai_units";

        $q = $this->db->query($sql);

        return $q->result_array();
    }

    public function get_unit_admin($id)
    {
        $sql = "SELECT * FROM ai_units WHERE id='$id'";
        $q = $this->db->query($sql);

        return $q->row_array();
    }

    public function add_unit_admin($data)
    {
        $sql = "INSERT INTO ai_units
		VALUES(default,
		'" . $data['name'] . "',
		'" . $data['icon'] . "',
		'" . $data['ability'] . "',
		'" . $data['can_carry'] . "',
		'" . $data['attack'] . "',
		'" . $data['defense'] . "',
		'" . $data['rate'] . "',
		'" . $data['per_score'] . "',
		'" . $data['turn'] . "',
		'" . $data['strong_against'] . "',
		'" . $data['weak_against'] . "')";

        $this->db->query($sql);

        $this->_create_sql($sql);
    }

    public function edit_unit_admin($data)
    {
        $sql = "UPDATE ai_units
		SET name='" . $data['name'] . "',
		icon='" . $data['icon'] . "',
		ability='" . $data['ability'] . "',
		can_carry='" . $data['can_carry'] . "',
		attack='" . $data['attack'] . "',
		defense='" . $data['defense'] . "',
		rate='" . $data['rate'] . "',
		per_score='" . $data['per_score'] . "',
		turn='" . $data['turn'] . "',
		strong_against='" . $data['strong_against'] . "',
		weak_against='" . $data['weak_against'] . "'
		WHERE id='" . $data['id'] . "'";

        $this->db->query($sql);

        $this->_create_sql($sql);
    }

    public function get_settings_list_admin()
    {
        $sql = "SELECT * FROM ai_settings";

        $q = $this->db->query($sql);

        return $q->result_array();
    }

    public function get_setting_admin($id)
    {
        $sql = "SELECT * FROM ai_settings WHERE id='$id'";
        $q = $this->db->query($sql);

        return $q->row_array();
    }

    public function edit_setting_admin($data)
    {
        $sql = "UPDATE ai_settings
		SET setting='" . $data['setting'] . "',
		value='" . $data['value'] . "',
		description='" . $data['description'] . "'
		WHERE id='" . $data['id'] . "'";

        $this->db->query($sql);

        $this->_create_sql($sql);
    }

    public function add_setting_admin($data)
    {
        $sql = "INSERT INTO ai_settings 
		VALUES(default, 
		'" . $data['setting'] . "', 
		'" . $data['value'] . "' , 
		'" . $data['description'] . "')";

        $this->db->query($sql);

        $this->_create_sql($sql);
    }
}
//nowhitesp