<?php

class Mix
{

    private $id = -1;
    private $enabled = false;
    private $name = "";
    private $slug = "";
    private $db = null;
    private $description = "";
    private $cover = "";
    private $url = "";
    private $seconds = 0;
    private $download_only = true;
    private $djs = [];
    private $genres = [];
    private $recorded;
    private $downloads = 0;
    private $created;
    private $updated;
    private $playcount = 0;
    private $tracklist = [];
    private $loadDJs = true;
    private $related_mixes = [];
    private $duration = [];
    private $mixshow = [];


    public function __construct($value, $db, $loadDJs = true)
    {
        $this->db = $db;

        // echo the type of value

        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['title'] != "") {
            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;
    }

    /**
     * @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->duration = $this->configure_duration();
        $this->download_only = $mix['mediaplayer'];
        $this->recorded = $mix['recorded'];
        $this->created = $mix['created'];
        $this->updated = $mix['lastupdated'];
        $this->enabled = $mix['pending'];
        if ($this->loadDJs) {
            require_once '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);

            $this->djs = array_filter($this->djs);
        }

        $this->load_mix_meta();
        $this->tracklist = $this->evaluate_tracklist();
        return true;
    }

    private function configure_duration(): array
    {
        $seconds = $this->seconds;
        $hours = floor($seconds / 3600);
        $minutes = floor(($seconds / 60) % 60);
        $seconds = $seconds % 60;

        // for 't', we need to show it as 01:02:03
        if ($hours < 10) {
            $hours0 = "0" . $hours;
        } else {
            $hours0 = $hours;
        }
        if ($minutes < 10) {
            $minutes0 = "0" . $minutes;
        } else {
            $minutes0 = $minutes;
        }
        if ($seconds < 10) {
            $seconds0 = "0" . $seconds;
        } else {
            $seconds0 = $seconds;
        }

        // if hours is 0, we don't need to show it
        $time = $hours > 0 ? $hours0 . ":" . $minutes0 . ":" . $seconds0 : $minutes0 . ":" . $seconds0;

        return ['h' => $hours, 'm' => $minutes, 's' => $seconds, 't' => $time, 'S' => $this->seconds];
    }

    private function load_mix_meta(): void
    {
        $stmt = $this->db->prepare("SELECT attribute,value FROM mix_meta WHERE mix_id = ?");
        $stmt->bind_param("i", $this->id);
        $stmt->execute();
        $result = $stmt->get_result();
        $meta = $result->fetch_all(MYSQLI_ASSOC);
        $stmt->close();

        foreach ($meta as $key => $value) {
            if ($value['attribute'] == "genre") {
                $this->genres[] = $value['value'];
                unset($meta[$key]);
            }
            if ($value['attribute'] == "related") {
                $this->related_mixes[] = $value['value'];
                unset($meta[$key]);
            }
            if ($value['attribute'] == "playcount") {
                $this->playcount = $value['value'];
                unset($meta[$key]);
            }
            if ($value['attribute'] == "downloads") {
                $this->downloads = $value['value'];
                unset($meta[$key]);
            }
            if ($value['attribute'] == "tracklist") {
                $this->tracklist = $value['value'];
                unset($meta[$key]);
            }
            if ($value['attribute'] == "mixshow") {
                $this->mixshow[] = $value['value'];
                unset($meta[$key]);
            }

        }

    }

    private function evaluate_tracklist()
    {
        if (empty($this->tracklist)) {
            return [];
        } else {
            // if the first item in the array is also an array, then return it
            if (is_array($this->tracklist)) {
                return $this->tracklist;
            } else {
                return explode("\n", (string)$this->tracklist);
            }
        }

    }

    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;
    }

    public function get_recorded()
    {
        return $this->recorded;
    }

    public function get_created()
    {
        return $this->created;
    }

    public function get_updated()
    {
        return $this->updated;
    }

    public function get_img(): string
    {
        return $this->cover;
    }

    public function get_djs()
    {
        return $this->djs;
    }

    public function get_description()
    {
        return $this->description;
    }

    public function get_tracklist(): array
    {
        return $this->tracklist;
    }

    public function get_genres()
    {
        return $this->genres;
    }

    public function get_seconds(): int
    {
        return $this->seconds;
    }

    public function is_download_only(): bool
    {
        return $this->download_only;
    }

    public function get_url(): string
    {
        return $this->url;
    }

    public function get_cover(): string
    {
        return $this->cover;
    }

    public function get_downloads(): int
    {
        return $this->downloads;
    }

    public function get_plays(): int
    {
        return $this->playcount;
    }

    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_duration(): array
    {
        return $this->duration;
    }

    public function get_mixshow(): array
    {
        return $this->mixshow;
    }

}