<?php

namespace App\Classes;

use LogicException;
use App\Models\Main\Tenant;
use InvalidArgumentException;
use Illuminate\Support\Facades\DB;
use App\Jobs\Preservation\SendFileJob;
use Illuminate\Support\Facades\Config;
use Facade\Ignition\Exceptions\InvalidConfig;
use App\Interfaces\PreservationClassInterface;
use App\Models\Tenant\Conservazione\File as Item;
use App\Models\Tenant\Conservazione\Conservazione as Package;
use Exception;
use UnexpectedValueException;

$path = dirname(base_path());
include "{$path}/config.php";
class PreservationClass {

    /**
     * Preservation engine
     *
     * @var mixed
     */
    private $engine;

    /**
     * Tenant
     *
     * @var mixed
     */
    private $tenant;

    /**
     * Package
     *
     * @var mixed
     */
    private $package;

    /**
     * Debug
     *
     * @var Bool
     */
    private $debug;

    /**
     * Create a new preservation instance.
     *
     * @param  Int $tenant
     * @param  Int $package
     * @return void
     */
    public function __construct(Int $tenant, Int $package)
    {
        global $pdo;

        $this->debug = FALSE;

        $this->tenant = Tenant::findOrFail($tenant);

        $prefix = config('json.prefix_db');
        config(['database.connections.mysql-tenant.database' =>  "{$prefix}_ente{$this->tenant->codice}"]);
        DB::purge('mysql-tenant');

        $this->package = Package::findOrFail($package);

        if(config('json.developEnv', false)) {

            $env = "beta";

        } else if(config('json.demoEnv', false)) {

            $env = "demo";

        } else {

            $env = "prod";

        }

        config(['json.preservation' => config("preservation.drivers.{$env}.default.settings")]);

        $this->engine = config("preservation.drivers.{$env}.default.class");
        $custom = config("preservation.drivers.{$env}.custom.{$this->tenant->codice}.class", null);

        if(! empty($custom)) {

            $this->engine = $custom;
            config(['json.preservation' => config("preservation.drivers.{$env}.custom.{$this->tenant->codice}.settings")]);

        }

        if(! empty($this->engine)) {

            $reflector = new \ReflectionClass($this->engine);
            if(file_exists($reflector->getFileName())) {

                $this->engine = new $this->engine($this->tenant);
                $this->engine->debug = $this->debug;

            }

        }

        $pdo->setConnessioneEnte($this->tenant->codice);

        $ente = new \ente();
        $ente->excludeConnector = true;
        $ente->init($this->tenant->dominio);
        if(empty($ente->codice)) {

            throw new InvalidConfig("Failed to initialize EnteClass with: {$this->tenant->dominio}");

        }

        $_SESSION["ente"] = $ente;

        $_SESSION["utente"] = new \App\Classes\Misc\User;
        $_SESSION["utente"]->codice_ente = $_SESSION["ente"]->getInfo()["codice"];

        if (!defined("__CMDS_JOB_EXEC")) {
            define("__CMDS_JOB_EXEC", TRUE);
        }
    }

    /**
     * Attempts to send/create a documents' collection.
     *
     * @return Bool The database connection.
     *
     * @throws Exception
     */
    public function pushCollection() {

        $package = Package::findOrFail($this->package->codice);
        if($package->tipologia == "conservazione") {

            if($package->stato >= 5 && $package->stato < 20) {

                if(empty($this->package->pid)) {

                    $this->engine->pushCollection($this->package);

                }

                $package->stato = 10;
                $package->save();

            }

            if($package->items()->count() < 1) {

                $package->stato = 90;
                $package->save();

                throw new LogicException("No file available in package ID: {$package->codice}");

            }

            foreach($package->items()->get() as $file) {

                $this->pushItem($file->codice);

            }

            $this->engine->checkPreservationStatus($this->tenant, $this->package);

        }


    }

    /**
     * Retrive Item information
     *
     * @param  mixed $item
     * @return Array
     */
    public function getItem(Int $item) : ?Array
    {
        global $config;

        ini_set('memory_limit', 1024 * 5 . "M");

        $item = Item::findOrFail($item);

        $content = null;

        $meta = json_decode(base64_decode(gzinflate($item->metadati)), TRUE);
        $meta["amministrazione_titolare"] = collect($_SESSION["ente"]->getInfo())->only("codice", "codice_ipa", "dominio", "denominazione", "cf", "pec", "indirizzo", "citta", "provincia", "cap", "stato", "telefono")->toArray();
        $meta["oggetto"] = "Fascicolo {{$item->package->codice}}";
        $meta["materia"] = "";
        $meta["procedimento"] = "";

        if($item->package->modulo == "gare" && ! empty($meta["info"])) {
            $meta["materia"]      = "Gara di appalto";
            $meta["oggetto"]      = "Fascicolo di Gara {ID:{$meta["info"]["gara"]["id"]}}";
            if(! empty($meta["cup"])) { $meta["oggetto"] = "{$meta["oggetto"]} - CUP {$meta["cup"]}"; }
            $meta["procedimento"] = $meta["info"]["gara"]["oggetto"];
        }

        switch($item->tabella_riferimento) {
            case 'b_filemanager':
                $file = \filesManager::fileInfo($item->codice_riferimento, $meta["nomeFile"], $meta["source_id"], $meta["source_type"], true);
                if(! empty($file["content"])) {
                    $content = &$file["content"];
                }
                break;
            case 'b_gare_buste':
                $gara = \gara::init($meta["codice_gara"], $meta["codice_round"]);
                $gara->setLotto($meta["codice_lotto"]);
                $busta = $gara->getBusta($meta["codice_partecipante"], $meta["richiesta"]["codice"], false, true);
                if(! empty($busta["content"])) {
                    $content = &$busta["content"];
                }
                break;
            case 'r_richieste_oe':
                if(! empty($meta["codice_gara"])) {
                    $oggetto = \gara::init($meta["codice_gara"], $meta["codice_round"]);
                    $oggetto->setLotto($meta["codice_lotto"]);
                }
                if(! empty($meta["codice_contratto"])) {
                    $oggetto = \stipula::init($meta["codice_contratto"]);
                }
                if(! empty($oggetto)) {
                    $integrazioni = $oggetto->getManagerRichieste();
                    $documento = $integrazioni->getContent($meta["richiesta"]["codice"], $meta["codice_relazione"], true);
                    if(! empty($documento["content"])) {
                        $content = &$documento["content"];
                    }
                }
                break;
            case 'r_comunicazioni_utenti':
                if(file_exists($meta["path"])) {
                    $content = file_get_contents($meta["path"]);
                    if ($config["enable_smtp_send"]) {
                        $content = gzuncompress($content);
                    }
                }
                break;
            case 'b_contratti_sottoscritti':
                $contratto = \stipula::init($meta["codice_contratto"]);
                if(! empty($contratto)) {
                    $contratto_sottoscritto = $contratto->getContrattoSottoscritto(true, $meta["codice_firmatario"]);
                    if(! empty($contratto_sottoscritto["content"])) {
                        $content = &$contratto_sottoscritto["content"];
                    }
                }
                break;
            default:
                throw new Exception("I file della tabella {$item->tabella_riferimento} non sono gestiti correttamente.");
                break;
        }

        if(empty($content)) {

            $item->stato = 90;
            $item->package->pid = null;
            $item->save();

            $item->package->items()->delete();

            throw new UnexpectedValueException("Invalid content file for item id {$item->codice}");

        }

        return [&$item, &$meta, &$content];

    }


    /**
     * Attempts to send a document.
     *
     * @return void
     */
    public function pushItem(Int $item) {

        list($item, $meta, $content) = $this->getItem($item);
        if(($item->package->stato >= 5 && $item->package->stato < 20) && ($item->stato < 20 || $item->stato == 90)) {

            $item->stato = 10;
            $item->save();

            $this->engine->pushItem($item, $meta, $content);

        }

    }

    /**
     * Check if files preservation has been completed.
     *
     * @param  mixed $var
     * @return void
     */
    public function checkPreservationStatus()
    {
        $package = Package::findOrFail($this->package->codice);
        $this->engine->checkPreservationStatus($this->tenant, $package);
    }

    /**
     * Get Tenant's ID
     *
     * @return Int
     */
    public function getTenant() : Int
    {
        return $this->tenant->codice;
    }

    /**
     * Enable debugging mode
     *
     * @return void
     */
    public function enableDebugging()
    {
        $this->debug = true;
        $this->engine->debug = $this->debug;
    }

}