<?php

class Mix
{

    private $id = -1;
    private $enabled = false;
    private $name = "";
    private $slug = "";
    private $genre = [];
    private $db = null;
    private $description = "";
    private $cover = "";
    private $url = "";
    private $seconds = 0;
    private $mediaplayer = false;
    private $djs = [];
    private $genres = [];
    private $recorded;
    private $created;
    private $updated;
    private $playcount = 0;


    public function __construct($value, $db)
    {
        $this->db = $db;

        if (ctype_digit((string)$value)) {
            $this->id = (int)$value;
            return $this->load_by_id();

        } else {
            $this->slug = $value;
            return $this->load_by_slug();
        }
    }

    private function load_by_id(): bool
    {
        $mix = $this->get_mix_by_id();
        if ($mix && $mix['name'] != "") {
            return $this->build_mix($mix);
        } else {
            return false;
        }
    }

    private function get_mix_by_id()
    {
        $stmt = $this->db->prepare("SELECT * FROM mix WHERE id = ?");
        $stmt->bind_param("i", $this->id);
        $stmt->execute();
        $result = $stmt->get_result();
        $mix = $result->fetch_assoc();
        $stmt->close();
        return $mix;
    }

    private function get_mix_genres()
    {
        $stmt = $this->db->prepare("SELECT * FROM mix_meta WHERE attribute = 'genre' AND mix_id = ?");
        $stmt->bind_param("i", $this->id);
        $stmt->execute();
        $result = $stmt->get_result();
        $genres = $result->fetch_all(MYSQLI_ASSOC);
        $stmt->close();
        return $genres;
    }

    private function get_playcount()
    {
        $stmt = $this->db->prepare("SELECT value FROM mix_meta WHERE attribute = 'playcount' AND mix_id = ?");
        $stmt->bind_param("i", $this->id);
        $stmt->execute();
        $result = $stmt->get_result();
        $genres = $result->fetch_all(MYSQLI_ASSOC);
        $stmt->close();
        return $genres;
    }

    private function load_by_slug(): bool
    {
        $mix = $this->get_mix_by_slug();

        if ($mix['title'] != "") {
            return $this->build_mix($mix);
        } else {
            return false;
        }
    }

    private function get_mix_by_slug()
    {
        $stmt = $this->db->prepare("SELECT * FROM mix WHERE slug = ?");
        $stmt->bind_param("s", $this->slug);
        $stmt->execute();
        $result = $stmt->get_result();
        $mix = $result->fetch_assoc();
        $stmt->close();
        return $mix;
    }

    private function load_mix_genres()
    {
        $genres = $this->get_mix_genres();
        if (count($genres) == 0) {
            $this->genres = [];
        } else {
            // iterate through the genres;  add each of the rest to the array
            $this->genres = [];
            require_once 'Genre.php';
            foreach ($genres as $genre) {
                $genre = new Genre($genre['value'], $this->db);
                if ($genre->get_id() != -1) {
                    $this->genres[] = ['id' => $genre->get_id(), 'name' => $genre->get_name(), 'slug' => $genre->get_slug()];
                }

            }

        }

    }
    public function get_img(): string
    {
        return $this->cover;
    }

    public function get_id(): int
    {
        return $this->id;
    }

    public function get_name(): string
    {
        return $this->name;
    }

    public function get_slug(): string
    {
        return $this->slug;
    }

    public function get_djs(){
        return $this->djs;
    }

    /**
     * @param $mix
     * @return true
     */
    private function build_mix($mix): bool
    {
        $this->id = $mix['id'];
        $this->name = $mix['title'];
        $this->slug = $mix['slug'];
        $this->description = $mix['description'];
        if (isset($mix['cover'])) {

            // is this legacy code?
            // the code is legacy if it starts with /dj/,
            // if it does, prefix with https://www.utahsdjs.com
            if (substr($mix['cover'], 0, 5) == "/djs/") {
                $mix['cover'] = substr($mix['cover'], 4);
                $this->cover = "https://cdn.utahsdjs.com" . $mix['cover'];
            } else {
                $this->cover = $mix['cover'];
            }
        }
        $this->url = $mix['url'];
        $this->seconds = $mix['seconds'];
        $this->mediaplayer = $mix['mediaplayer'];
        $this->recorded = $mix['recorded'];
        $this->created = $mix['created'];
        $this->updated = $mix['lastupdated'];
        $this->enabled = $mix['pending'];
        require 'DJ.php';
        $this->djs[] = new DJ($mix['dj1'], $this->db);
        if ($mix['dj2'] != null)
            $this->djs[] = new DJ($mix['dj2'], $this->db);
        if ($mix['dj3'] != null)
            $this->djs[] = new DJ($mix['dj3'], $this->db);

        // delete any nulls from the array
        $this->djs = array_filter($this->djs);

        $this->genre = $this->get_mix_genres();
        $this->playcount = $this->get_playcount();


        return true;
    }

}