 <?php
/**
 * Search results page file.
 *
 * Provides a class with all the properties and methods to display the page.
 *
 * @author Iñigo Valentin <i@inigovalentin.com>
 * @license https://www.gnu.org/licenses/gpl-3.0.en.html GNU General Public License V3
 * @package SWDB
 * @todo Implement
 */

require_once(PATH::PAGE . "Page.php");

/**
 * Main reports page model.
 *
 * @category Page
 */
class Search_Page extends Page{

    /**
     * @var string Searched query.
     * 
     * Will be processed do standarize it.
     */
    private $query = "";

    /**
     * @var mixed[] Search results.
     */
    private $results = [
        "monster" => [],
        "dungeon" => [],
        "building" => [],
        "report" => [],
        "player" => [],
        "unit" => [],
        "team" => [],
    ];
    
    /**
     * @var mixed[] Default filter values.
     */
    private $filters = [
        "MONSTER" => true,
        "DUNGEON" => true,
        "BUILDING" => true,
        "REPORT" => true,
        "PLAYER" => true,
        "UNIT" => true,
        "TEAM" => true
    ];

    /**
     * Constructor.
     *
     * Retrieves the data and initializes the variables.
     *
     */
    public function __construct($query = ""){
        parent::__construct();
        $this->set_public(true);
        $this->set_view("search.php");
        $this->set_title("Search results");
        $this->set_description("Search results: " . htmlentities($query));
        $this->set_canonical("search/" . $query);
        $this->add_css("search.css");
        
        $this->parse_filters();
        error_log("QUERY: " . $query);
        if ($query != null && $query != ""){
            $q = $query;
            $q = preg_replace('/\s+/', ' ', $q); // Remove multiple whitespace
            $q = strtolower($q); // Lowercase
            $this->query = $q;
            if ($this->filters["MONSTER"] == true){
                $this->search_monster();
            }
            if ($this->filters["DUNGEON"] == true){
                $this->search_dungeon();
            }
            if ($this->filters["BUILDING"] == true){
                $this->search_building();
            }
            /*if ($this->filters["REPORT"] == true){
                $this->search_report();
            }
            if ($this->filters["PLAYER"] == true){
                $this->search_player();
            }
            if ($this->filters["UNIT"] == true){
                $this->search_unit();
            }
            if ($this->filters["TEAM"] == true){
                $this->search_team();
            }*/
        }
        
        $this->set_code(200);
        $this->set_message("OK");
    }
    
    /**
     * Parses the request looking for the selected filters, validates them
     * and adds them to the $filters array.
     */
    private function parse_filters(){
        // filters["MONSTER"]
        if (isset($_GET["monster"]) && $_GET["monster"] != "on"){
            $this->filters["MONSTER"] = false;
        }
        else{
            $this->filters["MONSTER"] = true;
        }
        // filters["DUNGEON"]
        if (isset($_GET["dungeon"]) && $_GET["dungeon"] != "on"){
            $this->filters["DUNGEON"] = false;
        }
        else{
            $this->filters["DUNGEON"] = true;
        }
        // filters["BUILDING"]
        if (isset($_GET["building"]) && $_GET["building"] != "on"){
            $this->filters["BUILDING"] = false;
        }
        else{
            $this->filters["BUILDING"] = true;
        }
        // filters["REPORT"]
        if (isset($_GET["report"]) && $_GET["report"] != "on"){
            $this->filters["REPORT"] = false;
        }
        else{
            $this->filters["DUNGEON"] = true;
        }
        // filters["PLAYER"]
        if (isset($_GET["player"]) && $_GET["player"] != "on"){
            $this->filters["PLAYER"] = false;
        }
        else{
            $this->filters["PLAYER"] = true;
        }
        // filters["UNIT"]
        if ((isset($_GET["unit"]) && $_GET["unit"] != "on") || get_context()->get_user() == null){
            $this->filters["UNIT"] = false;
        }
        else{
            $this->filters["UNIT"] = true;
        }
        // filters["TEAM"]
        if ((isset($_GET["team"]) && $_GET["team"] != "on") || get_context()->get_user() == null){
            $this->filters["TEAM"] = false;
        }
        else{
            $this->filters["TEAM"] = true;
        }
        return;
    }

    /**
     * Searchs monsters matching the query and adds them to the result array.
     */
    private function search_monster(){
        $statement = get_context()->get_db()->prepare("
          SELECT id
          FROM monster
          WHERE obtainable = 1 AND
          (
            lower(name) LIKE :query OR
            id LIKE :query
          );
        ");
        $statement->bindValue(":query", "%" . $this->query . "%", SQLITE3_TEXT);
        error_log($statement->getSQL(true));
        $result_set = $statement->execute();
        while ($result = $result_set->fetchArray(SQLITE3_ASSOC)){
            array_push($this->results["monster"], new Monster($result["id"]));
        }
        return;
    }
    
    /**
     * Searchs monsters matching the query and adds them to the result array.
     * @todo: implement when dungeons area thing.
     */
    private function search_dungeon(){
        return;
    }
    
    /**
     * Searchs monsters matching the query and adds them to the result array.
     */
    private function search_building(){
        $statement = get_context()->get_db()->prepare("
          SELECT id, type
          FROM (
            SELECT id, name, description, 'buildable' AS type FROM buildable
            UNION
            SELECT id, name, description, 'decorative' AS type FROM decorative
          )
          WHERE 
            lower(name) LIKE :query OR
            lower(description) LIKE :query OR
            id LIKE :query;
        ");
        $statement->bindValue(":query", "%" . $this->query . "%", SQLITE3_TEXT);
        error_log($statement->getSQL(true));
        $result_set = $statement->execute();
        while ($result = $result_set->fetchArray(SQLITE3_ASSOC)){
            if ("buildable" == $result["type"]){
                array_push($this->results["building"], new Buildable($result["id"]));
            }
            elseif ("decorative" == $result["type"]){
                array_push($this->results["building"], new Decorative($result["id"]));
            }
            
        }
    }
    
    /**
     * Retrieves the page filters.
     *
     * @return mixed[] Page filtes
     */
    public function get_filters(){
        return $this->filters;
    }
    
    /**
     * Retrieves one filter.
     *
     * @param string $key
     * @return mixed Filter value, null if if doesn't exist.
     */
    public function get_filter($key){
        if (array_key_exists($key, $this->filters)){
            return $this->filters[$key];
        }
        else{
            return null;
        }
    }

    /**
     * Retrieves the results.
     * 
     * If no key is specified, an array with the following keys will be returned:
     * "monster", "dungeon", "building", "player", "report". Each of these keys is an array itself
     * with instances of the found elements. If a key is specified, only it's array will be
     * returned.
     * 
     *
     * @param string $key Result group name.
     * @return mixed[] Result list.
     */
    public function get_results($key = null){
        if ($key == null){
            error_log("RET NULL");
            return $this->results;
        }
        else{
            error_log("RET KEY : $key");
            if (isset($this->results[$key])){
                error_log("RET KEY OK");
                return $this->results[$key];
            }
            else{
                error_log("RET NULL NULL");
                return null;
            }
        }
    }

    
}