 <?php
 
    /**
     * Enchantment list page file.
     *
     * Provides a class with all the properties and methods to display the page.
     *
     * @category Page
     */

    /**
     * Require dependent files if not present.
     */
    require_once(PATH::PAGE . "Page.php");
    require_once(PATH::ENTITY . "Custom_Filter.php");
    require_once(PATH::ENTITY . "Enchantment.php");

    /**
     * Enchantment list page model.
     *
     * @category Page
     */
    class Enchantments_Page extends Page{

        /**
         * @var \Enchantment[] Owned enchantment gems.
         */
        public $gems = [];

        /**
         * @var \Enchantment[] Owned enchantment grindstones.
         */
        public $grindstones = [];

        /**
         * @var \Filter[] Custom filters for this page.
         */
        public $custom_filters = [];

        /**
         * Constructor.
         *
         * Retrieves the data and initializes the variables.
         *
         * @global int Player ID.
         * @global resource Database connection.
         */
        public function __construct(){
            global $UID;
            global $db;
            $this->view = PATH::VIEW . "enchantments.php";
            $this->parse_filters();
            if (!isset($_GET["custom_filter"])){
                $s = $this->build_query();
            }
            else{
                $s = $this->build_custom_query($_GET["custom_filter"]);
            }
            $q = $db->query($s);
            while ($r = $q->fetchArray(SQLITE3_ASSOC)){
                $enchantment = new Enchantment($r["id"]);
                //if ($enchantment->gem == true){
                //   array_push($this->gems, $enchantment);
                //}
                //else{
                    array_push($this->grindstones, $enchantment);
                //}
            }
            $s = "
              SELECT id
              FROM filter
              WHERE
                uid = '$UID' AND
                page = 'ENCHANTMENTS';
            ";
            $q = $db->query($s);
            while ($r = $q->fetchArray(SQLITE3_ASSOC)){
                array_push($this->custom_filters, new Custom_Filter($r["id"]));
            }
            $this->title = "Enchantments - SWDB";
            $this->description = "Enchantment inventory";
            $this->canonical = URL::BASE . "enchantments/";
        }

        /**
         * Parses the request looking for the selected filters, validates them
         * and adds them to the $filters array.
         */
        private function parse_filters(){
            $this->filters = FILTER::ENCHANTMENT;
            if (isset($_GET["min_quality"]) && intval($_GET["min_quality"]) >= QUALITY_ID::NORMAL && intval($_GET["min_quality"]) <= QUALITY_ID::LEGEND){
                $this->filters["MIN_QUALITY"] = $_GET["min_quality"];
            }
            if (isset($_GET["max_quality"]) && intval($_GET["max_quality"]) >= QUALITY_ID::NORMAL && intval($_GET["max_quality"]) <= QUALITY_ID::LEGEND){
                $this->filters["MAX_QUALITY"] = $_GET["max_quality"];
            }
            if (isset($_GET["stat"])){
                $stats = $_GET["stat"];
                foreach ($stats as $stat){
                    array_push($this->filters["STAT"], intval($stat));
                }
            }
            if (isset($_GET["rune"])){
                $runes = $_GET["rune"];
                foreach ($runes as $rune){
                    array_push($this->filters["RUNE"], intval($rune));
                }
            }
            if (isset($_GET["type"])){
                $types = $_GET["type"];
                foreach ($types as $type){
                    array_push($this->filters["TYPE"], $type);
                }
            }
            // TODO
            /*
            if (isset($_GET["archetype"])){
                $archetypes = $_GET["archetype"];
                foreach ($archetypes as $archetype){
                    array_push($this->filters["ARCHETYPE"], intval($archetype));
                }
            }
            
            if (isset($_GET["min_level"]) && intval($_GET["min_level"]) >= 0 && intval($_GET["min_level"]) <= 15){
                $this->filters["MIN_LEVEL"] = $_GET["min_level"];
            }
            if (isset($_GET["max_level"]) && intval($_GET["max_level"]) >= 0 && intval($_GET["max_level"]) <= 15){
                $this->filters["MAX_LEVEL"] = $_GET["max_level"];
            }
            if (isset($_GET["min_original_quality"]) && intval($_GET["min_original_quality"]) >= QUALITY_ID::NORMAL && intval($_GET["min_original_quality"]) <= QUALITY_ID::LEGEND){
                $this->filters["MIN_ORIGINAL_QUALITY"] = $_GET["min_original_quality"];
            }
            if (isset($_GET["max_original_quality"]) && intval($_GET["max_original_quality"]) >= QUALITY_ID::NORMAL && intval($_GET["max_original_quality"]) <= QUALITY_ID::LEGEND){
                $this->filters["MAX_ORIGINAL_QUALITY"] = $_GET["max_original_quality"];
            }
            if (isset($_GET["assigned"]) && intval($_GET["assigned"]) >= 0 && intval($_GET["assigned"]) <= 4){
                $this->filters["ASSIGNED"] = $_GET["assigned"];
            }*/
        }

        /**
         * Builds the query to the artifact table using the a custom filter.
         * 
         * @param int $filter Custom filter ID.
         * @return string The query to be executed.
         * @global int Player ID.
         * @global resource Database connection.
         */
        private function build_custom_query($filter){
            global $UID;
            global $db;
            $s = "
              SELECT condition
              FROM filter
              WHERE
                uid = '$UID' AND
                id = $filter;
            ";
            $q = $db->query($s);
            $r = $q->fetchArray(SQLITE3_ASSOC);
            $cond = $r["condition"];
            $s = "
              SELECT
                id
              FROM enchantment
              WHERE uid = '$UID' AND (
                $cond
              )
              ORDER BY type, rune DESC, quality DESC;
            ";
            return $s;
        }

        /**
         * Builds the query to the artifact table using the selected or default
         * filters.
         * 
         * @return string The query to be executed.
         * @global int Player ID.
         */
        private function build_query(){
            global $UID;
            $s = "
              SELECT id
              FROM enchantment
              WHERE
                uid = '$UID' AND
                quality >= " . $this->filters["MIN_QUALITY"] . " AND
                quality <= " . $this->filters["MAX_QUALITY"] . "
            ";
            if (count($this->filters["STAT"]) > 0){
                $s = $s . " AND stat IN ( ";
                foreach($this->filters["STAT"] as $t){
                    $s = $s . "$t, ";
                }
                $s = $s . "-1) ";
            }
            if (count($this->filters["RUNE"]) > 0){
                $s = $s . " AND (rune IN ( ";
                foreach($this->filters["RUNE"] as $t){
                    $s = $s . "'$t', ";
                }
                $s = $s . "'DUMMY0') ";
                if (in_array('0', $this->filters["RUNE"])){
                    // Include inmemorials
                    $s .= " OR type in (3, 4)) ";
                }
                else{
                    $s .= ") ";
                }
            }
            if (count($this->filters["TYPE"]) == 1){
                // Only one selectd, it's either gems or grindstones
                if (in_array("GEM", $this->filters["TYPE"])){
                    $s .= " AND type IN (1, 3, 5) "; // Gems.
                }
                else{
                    $s .= " AND type IN (2, 4, 6) "; // Grindstones.
                }
            }
            $s = $s . "
              ORDER BY
                type = 3 DESC,  -- Inmemorial Grindstone
                type = 4 DESC,  -- Inmemorial Gem
                rune,
                type,
                quality DESC,
                stat
            ";
            /*if (count($this->filters["MAIN"]) > 0){
                $s = $s . " AND main_stat IN ( ";
                foreach($this->filters["MAIN"] as $t){
                    $s = $s . "$t, ";
                }
                $s = $s . "-1) ";
            }
            if (count($this->filters["ELEMENT"]) == 0 && count($this->filters["ARCHETYPE"]) == 0){
                // No element/archetype conditions
            }
            elseif (count($this->filters["ELEMENT"]) > 0 && count($this->filters["ARCHETYPE"]) == 0){
                // Only selected elements
                $s = $s . " AND attribute IN ( ";
                foreach($this->filters["ELEMENT"] as $t){
                    $s = $s . "$t, ";
                }
                $s = $s . "-1) ";
            }
            elseif (count($this->filters["ELEMENT"]) == 0 && count($this->filters["ARCHETYPE"]) > 0){
                // Only selected types
                $s = $s . " AND archetype IN ( ";
                foreach($this->filters["ARCHETYPE"] as $t){
                    $s = $s . "$t, ";
                }
                $s = $s . "-1) ";
            }
            elseif (count($this->filters["ELEMENT"]) > 0 && count($this->filters["ARCHETYPE"]) > 0){
                // Selected elements and selected types
                $s = $s . " AND (archetype IN ( ";
                foreach($this->filters["ARCHETYPE"] as $t){
                    $s = $s . "$t, ";
                }
                $s = $s . "-1) OR attribute IN ( ";
                foreach($this->filters["ELEMENT"] as $t){
                    $s = $s . "$t, ";
                }
                $s = $s . "-1)) ";
            }
            switch ($this->filters["ASSIGNED"]){
                case 1:
                    $s = $s . " AND assigned_to IS NOT NULL ";
                    break;
                case 2:
                    $s = $s . " AND assigned_to IS NULL ";
                    break;
                case 3:
                    $s = $s . " AND (assigned_to IS NULL OR assigned_to IN (SELECT DISTINCT id FROM unit WHERE building <> " . BUILDING_ID::MONSTER_STORAGE . ")) ";
                    break;
                case 4:
                    $s = $s . " AND assigned_to IN (SELECT DISTINCT id FROM unit WHERE building <> " . BUILDING_ID::MONSTER_STORAGE . ") ";
                    break;
            }
            $s = $s . " ORDER BY type, attribute, archetype, level DESC, original_quality DESC;";
            */
            return $s;
        }
    }
?>