<?php
    /**
     * Rune entity file.
     *
     * Creates the entity and makes it available.
     *
     * @category Entity
     */

    /**
     * Require dependent entities if not present.
     */
    require_once(PATH::ENTITY . "Entity.php");
    require_once(PATH::ENTITY . "K_Rune_Set.php");
    require_once(PATH::ENTITY . "Rune_Stat.php");

    /**
     * Owned rune.
     *
     * Represents an object from the table 'rune'.
     *
     * @category Entity
     */
    class Rune extends Entity{

        /**
         * @var int Owner identifier.
         */
        public $uid;

        /**
         * @var int Rune identifier.
         */
        public $id;

        /**
         * @var K_Rune_Set Rune set.
         */
        public $type;

        /**
         * @var int Position of the rune type (1-6).
         */
        public $slot;

        /**
         * @var int Rune stars.
         */
        public $stars;

        /**
         * @var bool Indicates if the rune is ancient.
         */
        public $ancient;

        /**
         * @var int Level of the rune.
         */
        public $level;

        /**
         * @var int Rune quality.
         *
         * @see QUALITY_ID
         */
        public $quality;

        /**
         * @var int Rune original quality.
         *
         * @see QUALITY_ID
         */
        public $original_quality;

        /**
         * @var string Rune quality name (uppercase).
         */
        public $quality_name;

        /**
         * @var string Rune original quality name (uppercase).
         */
        public $original_quality_name;

        /**
         * @var int Price of the rune.
         */
        public $value;

        /**
         * @var float Current efficiency of the rune.
         */
        public $efficiency;

        /**
         * @var float Maximum potential efficiency of the rune.
         */
        public $max_efficiency;

        /**
         * @var int Indicates if the rune is locked.
         */
        public $locked;

        /**
         * @var Rune_Stat Main stat of the rune.
         */
        public $main_stat;

        /**
         * @var Rune_Stat Extra stat of the rune.
         */
        public $innate_stat;

        /**
         * @var \Rune_Stat[] Substats of the rune.
         */
        public $substats = [];

        /**
         * @var \Rune_Stat[] All stats.
         *
         * Includes main, innate and substats
         */
        public $stats = [];

        /**
         * @var Unit Unit the rune is assigned to.
         */
        public $unit;

        /**
         * Constructor.
         *
         * Searches the database and retrieves the information about the
         * rune, populating it and it's items.
         *
         * @param int $id Rune id.
         * @global resource Database connection.
         */
        public function __construct($id){

            global $db;

            $statement = $db->prepare("
              SELECT
                id,
                type,
                slot,
                stars,
                level,
                ancient,
                quality,
                original_quality,
                value,
                efficiency,
                max_efficiency,
                locked
              FROM rune
              WHERE id = :id;
            ");
            $statement->bindValue(':id', $id, SQLITE3_TEXT);
            $r = $statement->execute()->fetchArray(SQLITE3_ASSOC);
            if ($r){
                $this->id = $r["id"];
                $this->type = new K_Rune_Set($r["type"]);
                $this->slot = $r["slot"];
                $this->stars = $r["stars"];
                $this->level = $r["level"];
                $this->ancient = $r["ancient"];
                $this->quality = $r["quality"];
                $this->original_quality = $r["original_quality"];
                $this->value = $r["value"];
                //$this->efficiency = $r["efficiency"];
                //$this->max_efficiency = $r["max_efficiency"];
                $this->locked = $r["locked"];

                // Get substats
                $statement = $db->prepare("
                  SELECT slot
                  FROM rune_stat
                  WHERE rune = :rune
                  ORDER BY slot;
                ");
                $statement->bindValue(':rune', $this->id, SQLITE3_TEXT);
                $q = $statement->execute();
                while ($r = $q->fetchArray(SQLITE3_ASSOC)){
                    $stat = new Rune_Stat($this->id, $r["slot"]);
                    array_push($this->stats, $stat);
                    switch ($r["slot"]){
                        case RUNE_STAT_SLOT_ID::MAIN:
                            $this->main_stat = $stat;
                            break;
                        case RUNE_STAT_SLOT_ID::INNATE:
                            $this->innate_stat = $stat;
                            break;
                        default:
                            array_push($this->substats, $stat);
                            break;
                    }
                }
                $this->quality_name = $this->get_quality_name($this->quality);
                $this->original_quality_name = $this->get_quality_name($this->original_quality);
                $this->efficiency = $this->calculate_efficiency();
                $this->max_efficiency = $this->calculate_maximum_efficiency();
            }
        }

        /**
         * Gets the value of the main stat at an arbitrary level.
         *
         * @param int $level Desired level.
         * @return int Value of the main stat at the selected level.
         */
        public function get_main_stat_at_level($level){
            $level = intval($level);
            if ($level < 0 || $level > 15){
                return 0;
            }
            switch ($this->main_stat->stat){
                case RUNE_STAT_ID::HP:
                    return RUNE_STAT_VALUES::HP[$this->stars][$level];
                case RUNE_STAT_ID::HP_P:
                    return RUNE_STAT_VALUES::HP_P[$this->stars][$level];
                case RUNE_STAT_ID::ATK:
                    return RUNE_STAT_VALUES::ATK[$this->stars][$level];
                case RUNE_STAT_ID::ATK_P:
                    return RUNE_STAT_VALUES::ATK_P[$this->stars][$level];
                case RUNE_STAT_ID::DEF:
                    return RUNE_STAT_VALUES::DEF[$this->stars][$level];
                case RUNE_STAT_ID::DEF_P:
                    return RUNE_STAT_VALUES::DEF_P[$this->stars][$level];
                case RUNE_STAT_ID::SPD:
                    return RUNE_STAT_VALUES::SPD[$this->stars][$level];
                case RUNE_STAT_ID::CRR:
                    return RUNE_STAT_VALUES::CRR[$this->stars][$level];
                case RUNE_STAT_ID::CRD:
                    return RUNE_STAT_VALUES::CRD[$this->stars][$level];
                case RUNE_STAT_ID::RES:
                    return RUNE_STAT_VALUES::RES[$this->stars][$level];
                case RUNE_STAT_ID::ACC:
                    return RUNE_STAT_VALUES::ACC[$this->stars][$level];
                default:
                    return 0;
            }
        }

        /**
         * Gets a stat name frm the mappings.
         *
         * @param int $q Quality id.
         * @return string Quality (Uppercase)
         */
        private function get_quality_name($q){
            switch ($q){
                case QUALITY_ID::NORMAL:
                    return "NORMAL";
                case QUALITY_ID::MAGIC:
                    return "MAGIC";
                case QUALITY_ID::RARE:
                    return "RARE";
                case QUALITY_ID::HERO:
                    return "HERO";
                case QUALITY_ID::LEGEND:
                    return "LEGEND";
                default:
                    return "";
            }
        }

        /**
         * Calcuates the efficiency of the rune.
         *
         * @return float Efficiency
         */
        private function calculate_efficiency(){
            global $db;
            $eff = [0.0, 0.0, 0.0, 0.0, 0.0];

            $query = "
              SELECT
                min,
                max
              FROM
                k_rune_roll_type,
                k_rune_stat_roll
              WHERE
                k_rune_roll_type.id = k_rune_stat_roll.type AND
                k_rune_roll_type.ancient = :ancient AND
                k_rune_roll_type.initial = :initial AND
                k_rune_roll_type.upgrade = :upgrade AND
                k_rune_stat_roll.stars = :stars AND
                k_rune_stat_roll.stat = :stat
              ";

            // Fixed stat 
            if ($this->innate_stat != null && $this->innate_stat->value > 0){
                $value = $this->innate_stat->value;
                $statement = $db->prepare($query);
                $statement->bindValue(':ancient', $this->ancient, SQLITE3_TEXT);
                $statement->bindValue(':initial', 1, SQLITE3_TEXT);
                $statement->bindValue(':upgrade', 0, SQLITE3_TEXT);
                $statement->bindValue(':stars', $this->stars, SQLITE3_TEXT);
                $statement->bindValue(':stat', $this->innate_stat->stat, SQLITE3_TEXT);
                $r = $statement->execute()->fetchArray(SQLITE3_ASSOC);
                if ($r){
                    $min_initial = 0;//$r["min"];
                    $max_initial = $r["max"];
                    $eff[0] = ($value - $min_initial) / (9 * ($max_initial - $min_initial));
                }
            }
            for ($i = 1; $i <= 4; $i ++){
                if ($this->stats[$i] != null && $this->stats[$i]->value > 0){
                    $value = $this->stats[$i]->value;
                    $value = $this->stats[$i]->value;
                    $statement = $db->prepare($query);
                    $statement->bindValue(':ancient', $this->ancient, SQLITE3_TEXT);
                    $statement->bindValue(':initial', 1, SQLITE3_TEXT);
                    $statement->bindValue(':upgrade', 0, SQLITE3_TEXT);
                    $statement->bindValue(':stars', $this->stars, SQLITE3_TEXT);
                    $statement->bindValue(':stat', $this->stats[$i]->stat, SQLITE3_TEXT);
                    $r_initial = $statement->execute()->fetchArray(SQLITE3_ASSOC);
                    $statement = $db->prepare($query);
                    $statement->bindValue(':ancient', $this->ancient, SQLITE3_TEXT);
                    $statement->bindValue(':initial', 0, SQLITE3_TEXT);
                    $statement->bindValue(':upgrade', 1, SQLITE3_TEXT);
                    $statement->bindValue(':stars', $this->stars, SQLITE3_TEXT);
                    $statement->bindValue(':stat', $this->stats[$i]->stat, SQLITE3_TEXT);
                    $r_upgrade = $statement->execute()->fetchArray(SQLITE3_ASSOC);
                    if ($r_initial && $r_upgrade){
                        $min_initial = 0;//$r_initial["min"];
                        $max_initial = $r_initial["max"];
                        $min_upgrade = 0;//$r_upgrade["min"];
                        $max_upgrade = $r_upgrade["max"];
                        $eff[$i] = ((5 * $value) - ( 4 * $min_upgrade + $min_initial)) / ( 9 * ($max_initial - $min_initial + (4 * ($max_upgrade + $min_upgrade))));
                    }
                }
            }
            $efficiency = 0.0;
            for ($i = 0; $i <= 4; $i ++){
                $efficiency += $eff[$i];
            }
            $efficiency *= 100;
            return $efficiency;
        }

        /**
         * Calcuates the maximum efficiency of the rune.
         *
         * @return float Efficiency
         */
        private function calculate_maximum_efficiency(){
            $max_efficiency = $this->efficiency;
            if ($this->level < 12){
                $max_efficiency += (1/9);
            }
            if ($this->level < 9){
                $max_efficiency += (1/9);
            }
            if ($this->level < 6){
                $max_efficiency += (1/9);
            }
            if ($this->level < 3){
                $max_efficiency += (1/9);
            }
            return $max_efficiency;
        }

    }
?>