<?php declare(strict_types=1);
namespace openvk\Web\Models\Entities;
use openvk\Web\Themes\{Themepack, Themepacks};
use openvk\Web\Util\DateTime;
use openvk\Web\Models\RowModel;
use openvk\Web\Models\Entities\{Photo, Message, Correspondence};
use openvk\Web\Models\Repositories\{Users, Clubs, Albums, Notifications};
use Nette\Database\Table\ActiveRow;
use Chandler\Database\DatabaseConnection;
use Chandler\Security\User as ChandlerUser;

class User extends RowModel
{
    protected $tableName = "profiles";
    
    const TYPE_DEFAULT = 0;
    const TYPE_BOT     = 1;
    
    const SUBSCRIPTION_ABSENT   = 0;
    const SUBSCRIPTION_INCOMING = 1;
    const SUBSCRIPTION_OUTGOING = 2;
    const SUBSCRIPTION_MUTUAL   = 3;
    
    const PRIVACY_NO_ONE          = 0;
    const PRIVACY_ONLY_FRIENDS    = 1;
    const PRIVACY_ONLY_REGISTERED = 2;
    const PRIVACY_EVERYONE        = 3;
    
    protected function _abstractRelationGenerator(string $filename, int $page = 1): \Traversable
    {
        $id     = $this->getId();
        $query  = "SELECT id FROM\n" . file_get_contents(__DIR__ . "/../sql/$filename.tsql");
        $query .= "\n LIMIT 6 OFFSET " . ( ($page - 1) * 6 );
        
        $rels = DatabaseConnection::i()->getConnection()->query($query, $id, $id);
        foreach($rels as $rel) {
            $rel = (new Users)->get($rel->id);
            if(!$rel) continue;
            
            yield $rel;
        }
    }
    
    protected function _abstractRelationCount(string $filename): int
    {
        $id    = $this->getId();
        $query = "SELECT COUNT(*) AS cnt FROM\n" . file_get_contents(__DIR__ . "/../sql/$filename.tsql");
        
        return (int) DatabaseConnection::i()->getConnection()->query($query, $id, $id)->fetch()->cnt;
    }
    
    function getId(): int
    {
        return $this->getRecord()->id;
    }
    
    function getStyle(): string
    {
        return $this->getRecord()->style;
    }
    
    function getTheme(): ?Themepack
    {
        return Themepacks::i()[$this->getStyle()] ?? NULL;
    }
    
    function getStyleAvatar(): int
    {
        return $this->getRecord()->style_avatar;
    }
    
    function hasMilkshakeEnabled(): bool
    {
        return (bool) $this->getRecord()->milkshake;
    }

    function hasMicroblogEnabled(): bool
    {
        return (bool) $this->getRecord()->microblog;
    }
    
    function getChandlerGUID(): string
    {
        return $this->getRecord()->user;
    }
    
    function getChandlerUser(): ChandlerUser
    {
        return new ChandlerUser($this->getRecord()->ref("ChandlerUsers", "user"));
    }
    
    function getURL(): string
    {
        if(!is_null($this->getShortCode()))
            return "/" . $this->getShortCode();
        else
            return "/id" . $this->getId();
    }
    
    function getAvatarUrl(): string
    {
        $url = ((!empty($_SERVER['HTTPS'])) ? 'https' : 'http') . '://' . $_SERVER['SERVER_NAME'] . '/';
        $url = explode('?', $url);
        $serverUrl = $url[0];
        
        if($this->getRecord()->deleted)
            return "$serverUrl/assets/packages/static/openvk/img/camera_200.png";
        else if($this->isBanned())
            return "$serverUrl/assets/packages/static/openvk/img/banned.jpg";
        
        $avPhoto = $this->getAvatarPhoto();
        if(is_null($avPhoto))
            return "$serverUrl/assets/packages/static/openvk/img/camera_200.png";
        else
            return $avPhoto->getURL();
    }
    
    function getAvatarLink(): string
    {
        $avPhoto = $this->getAvatarPhoto();
        if(!$avPhoto) return "javascript:void(0)";
        
        $pid = $avPhoto->getPrettyId();
        $aid = (new Albums)->getUserAvatarAlbum($this)->getId();
        
        return "/photo$pid?from=album$aid";
    }
    
    function getAvatarPhoto(): ?Photo
    {
        $avAlbum  = (new Albums)->getUserAvatarAlbum($this);
        $avCount  = $avAlbum->getPhotosCount();
        $avPhotos = $avAlbum->getPhotos($avCount, 1);
        
        return iterator_to_array($avPhotos)[0] ?? NULL;
    }
    
    function getFirstName(): string
    {
        return $this->getRecord()->deleted ? "DELETED" : mb_convert_case($this->getRecord()->first_name, MB_CASE_TITLE);
    }
    
    function getLastName(): string
    {
        return $this->getRecord()->deleted ? "DELETED" : mb_convert_case($this->getRecord()->last_name, MB_CASE_TITLE);
    }
    
    function getPseudo(): ?string
    {
        return $this->getRecord()->deleted ? "DELETED" : $this->getRecord()->pseudo;
    }
    
    function getFullName(): string
    {
        if($this->getRecord()->deleted)
            return "DELETED";
        
        $pseudo = $this->getPseudo();
        if(!$pseudo)
            $pseudo = " ";
        else
            $pseudo = " ($pseudo) ";
        
        return $this->getFirstName() . $pseudo . $this->getLastName();
    }
    
    function getCanonicalName(): string
    {
	if($this->getRecord()->deleted)
            return "DELETED";
	else
            return $this->getFirstName() . ' ' . $this->getLastName();
    }
    
    function getPhone(): ?string
    {
        return $this->getRecord()->phone;
    }
    
    function getEmail(): ?string
    {
        return $this->getRecord()->email;
    }
    
    function getOnline(): DateTime
    {
        return new DateTime($this->getRecord()->online);
    }
    
    function getDescription(): ?string
    {
        return $this->getRecord()->about;
    }
    
    function getStatus(): ?string
    {
        return $this->getRecord()->status;
    }
    
    function getShortCode(): ?string
    {
        return $this->getRecord()->shortcode;
    }
    
    function getBanReason(): ?string
    {
        return $this->getRecord()->block_reason;
    }
    
    function getType(): int
    {
        return $this->getRecord()->type;
    }
    
    function getCoins(): int
    {
        return $this->getRecord()->coins;
    }
    
    function getReputation(): int
    {
        return $this->getRecord()->reputation;
    }
    
    function getRegistrationTime(): DateTime
    {
        return new DateTime($this->getRecord()->since->getTimestamp());
    }
    
    function getRegistrationIP(): string
    {
        return $this->getRecord()->registering_ip;
    }
    
    function getHometown(): ?string
    {
        return $this->getRecord()->hometown;
    }
    
    function getPoliticalViews(): int
    {
        return $this->getRecord()->polit_views;
    }
    
    function getMaritalStatus(): int
    {
        return $this->getRecord()->marital_status;
    }
    
    function getContactEmail(): ?string
    {
        return $this->getRecord()->email_contact;
    }
    
    function getTelegram(): ?string
    {
        return $this->getRecord()->telegram;
    }
    
    function getInterests(): ?string
    {
        return $this->getRecord()->interests;
    }
    
    function getFavoriteMusic(): ?string
    {
        return $this->getRecord()->fav_music;
    }
    
    function getFavoriteFilms(): ?string
    {
        return $this->getRecord()->fav_films;
    }
    
    function getFavoriteShows(): ?string
    {
        return $this->getRecord()->fav_shows;
    }
    
    function getFavoriteBooks(): ?string
    {
        return $this->getRecord()->fav_books;
    }
    
    function getFavoriteQuote(): ?string
    {
        return $this->getRecord()->fav_quote;
    }
    
    function getCity(): ?string
    {
        return $this->getRecord()->city;
    }
    
    function getPhysicalAddress(): ?string
    {
        return $this->getRecord()->address;
    }
    
    function getNotificationOffset(): int
    {
        return $this->getRecord()->notification_offset;
    }
    
    function updateNotificationOffset(): void
    {
        $this->stateChanges("notification_offset", time());
    }
    
    function getLeftMenuItemStatus(string $id): bool
    {
        return (bool) bmask($this->getRecord()->left_menu, [
            "length"   => 1,
            "mappings" => [
                "photos",
                "videos",
                "messages",
                "notes",
                "groups",
                "news",
            ],
        ])->get($id);
    }
    
    function getPrivacySetting(string $id): int
    {
        return (int) bmask($this->getRecord()->privacy, [
            "length"   => 2,
            "mappings" => [
                "page.read",
                "page.info.read",
                "groups.read",
                "photos.read",
                "videos.read",
                "notes.read",
                "friends.read",
                "friends.add",
                "wall.write",
            ],
        ])->get($id);
    }
    
    function getPrivacyPermission(string $permission, ?User $user = NULL): bool
    {
        $permStatus = $this->getPrivacySetting($permission);
        if(!$user)
            return $permStatus === User::PRIVACY_EVERYONE;
        else if($user->getId() === $this->getId())
            return true;
        
        switch($permStatus) {
            case User::PRIVACY_ONLY_FRIENDS:
                return $this->getSubscriptionStatus($user) === User::SUBSCRIPTION_MUTUAL;
            case User::PRIVACY_ONLY_REGISTERED:
            case User::PRIVACY_EVERYONE:
                return true;
            default:
                return false;
        }
    }
    
    function getProfileCompletenessReport(): object
    {
        $incompleteness = 0;
        $unfilled       = [];
        
        if(!$this->getRecord()->status) {
            $unfilled[]      = "status";
            $incompleteness += 10;
        }
        if(!$this->getRecord()->telegram) {
            $unfilled[]      = "telegram";
            $incompleteness += 10;
        }
        if(!$this->getRecord()->email) {
            $unfilled[]      = "email";
            $incompleteness += 20;
        }
        if(!$this->getRecord()->phone) {
            $unfilled[]      = "phone";
            $incompleteness += 20;
        }
        if(!$this->getRecord()->city) {
            $unfilled[]      = "city";
            $incompleteness += 20;
        }
        if(!$this->getRecord()->interests) {
            $unfilled[]      = "interests";
            $incompleteness += 20;
        }
        
        return (object) [
            "total"    => 100 - $incompleteness,
            "unfilled" => $unfilled,
        ];
    }
    
    function getFriends(int $page = 1): \Traversable
    {
        return $this->_abstractRelationGenerator("get-friends", $page);
    }
    
    function getFriendsCount(): int
    {
        return $this->_abstractRelationCount("get-friends");
    }
    
    function getFollowers(int $page = 1): \Traversable
    {
        return $this->_abstractRelationGenerator("get-followers", $page);
    }
    
    function getFollowersCount(): int
    {
        return $this->_abstractRelationCount("get-followers");
    }
    
    function getSubscriptions(int $page = 1): \Traversable
    {
        return $this->_abstractRelationGenerator("get-subscriptions-user", $page);
    }
    
    function getSubscriptionsCount(): int
    {
        return $this->_abstractRelationCount("get-subscriptions-user");
    }
    
    function getClubs(int $page = 1): \Traversable
    {
        $sel = $this->getRecord()->related("subscriptions.follower")->page($page, OPENVK_DEFAULT_PER_PAGE);
        foreach($sel->where("model", "openvk\\Web\\Models\\Entities\\Club") as $target) {
            $target = (new Clubs)->get($target->target);
            if(!$target) continue;
            
            yield $target;
        }
    }
    
    function getClubCount(): int
    {
        $sel = $this->getRecord()->related("subscriptions.follower");
        $sel = $sel->where("model", "openvk\\Web\\Models\\Entities\\Club");
        
        return sizeof($sel);
    }
    
    function getMeetings(int $page = 1): \Traversable
    {
        $sel = $this->getRecord()->related("event_turnouts.user")->page($page, OPENVK_DEFAULT_PER_PAGE);
        foreach($sel as $target) {
            $target = (new Clubs)->get($target->event);
            if(!$target) continue;
            
            yield $target;
        }
    }
    
    function getMeetingCount(): int
    {
        return sizeof($this->getRecord()->related("event_turnouts.user"));
    }
    
    function getSubscriptionStatus(User $user): int
    {
        $subbed = !is_null($this->getRecord()->related("subscriptions.follower")->where([
            "model"  => static::class,
            "target" => $user->getId(),
        ])->fetch());
        $followed = !is_null($this->getRecord()->related("subscriptions.target")->where([
            "model"    => static::class,
            "follower" => $user->getId(),
        ])->fetch());
        
        if($subbed && $followed) return User::SUBSCRIPTION_MUTUAL;
        if($subbed)   return User::SUBSCRIPTION_INCOMING;
        if($followed) return User::SUBSCRIPTION_OUTGOING;
        
        return User::SUBSCRIPTION_ABSENT;
    }
    
    function getNotificationsCount(bool $archived = false): int
    {
        return (new Notifications)->getNotificationCountByUser($this, $this->getNotificationOffset(), $archived);
    }
    
    function getNotifications(int $page, bool $archived = false): \Traversable
    {
        return (new Notifications)->getNotificationsByUser($this, $this->getNotificationOffset(), $archived, $page);
    }
    
    function getPendingPhoneVerification(): ?ActiveRow
    {
        return $this->getRecord()->ref("number_verification", "id");
    }
    
    function getRefLinkId(): string
    {
        $rand = openssl_random_pseudo_bytes(SODIUM_CRYPTO_STREAM_NONCEBYTES); # anime :)
        $key  = substr(hex2bin(CHANDLER_ROOT_CONF["security"]["secret"]), 0, SODIUM_CRYPTO_STREAM_KEYBYTES);
        
        return bin2hex($rand) . bin2hex(sodium_crypto_stream_xor((string) $this->getId(), $rand, $key));
    }
    
    function isFemale(): bool
    {
        return (bool) $this->getRecord()->sex;
    }
    
    function isVerified(): bool
    {
        return (bool) $this->getRecord()->verified;
    }
    
    function isBanned(): bool
    {
        return !is_null($this->getBanReason());
    }
    
    function prefersNotToSeeRating(): bool
    {
        return !((bool) $this->getRecord()->show_rating);
    }
    
    function hasPendingNumberChange(): bool
    {
        return !is_null($this->getPendingPhoneVerification());
    }
    
    function ban(string $reason): void
    {
        $subs = DatabaseConnection::i()->getContext()->table("subscriptions");
        $subs = $subs->where(
            "follower = ? OR (target = ? AND model = ?)",
            $this->getId(),
            $this->getId(),
            get_class($this),
        );
        $subs->delete();
        
        $this->setBlock_Reason($reason);
        $this->save();
    }
    
    function verifyNumber(string $code): bool
    {
        $ver = $this->getPendingPhoneVerification();
        if(!$ver) return false;
        
        try {
            if(sodium_memcmp((string) $ver->code, $code) === -1) return false;
        } catch(\SodiumException $ex) {
            return false;
        }
        
        $this->setPhone($ver->number);
        $this->save();
        
        DatabaseConnection::i()->getContext()
                               ->table("number_verification")
                               ->where("user", $this->getId())
                               ->delete();
        
        return true;
    }
    
    function setPrivacySetting(string $id, int $status): void
    {
        $this->stateChanges("privacy", bmask($this->changes["privacy"] ?? $this->getRecord()->privacy, [
            "length"   => 2,
            "mappings" => [
                "page.read",
                "page.info.read",
                "groups.read",
                "photos.read",
                "videos.read",
                "notes.read",
                "friends.read",
                "friends.add",
                "wall.write",
            ],
        ])->set($id, $status)->toInteger());
    }
    
    function setLeftMenuItemStatus(string $id, bool $status): void
    {
        $mask = bmask($this->changes["left_menu"] ?? $this->getRecord()->left_menu, [
            "length"   => 1,
            "mappings" => [
                "photos",
                "videos",
                "messages",
                "notes",
                "groups",
                "news",
            ],
        ])->set($id, (int) $status)->toInteger();
        
        $this->stateChanges("left_menu", $mask);
    }
    
    function setShortCode(?string $code = NULL): ?bool
    {
        if(!is_null($code)) {
            if(!preg_match("%^[a-z][a-z0-9\\.\\_]{0,30}[a-z0-9]$%", $code))
                return false;
            if(in_array($code, OPENVK_ROOT_CONF["openvk"]["preferences"]["shortcodes"]["forbiddenNames"]))
                return false;
            if(\Chandler\MVC\Routing\Router::i()->getMatchingRoute("/$code")[0]->presenter !== "UnknownTextRouteStrategy")
                return false;
	    
	    $pClub = DatabaseConnection::i()->getContext()->table("groups")->where("shortcode", $code)->fetch();
            if(!is_null($pClub))
                return false;
        }
        
        $this->stateChanges("shortcode", $code);
        return true;
    }
    
    function setPhoneWithVerification(string $phone): string
    {
        $code = unpack("S", openssl_random_pseudo_bytes(2))[1];
        
        if($this->hasPendingNumberChange()) {
            DatabaseConnection::i()->getContext()
                                   ->table("number_verification")
                                   ->where("user", $this->getId())
                                   ->update(["number" => $phone, "code" => $code]);
        } else {
            DatabaseConnection::i()->getContext()
                                   ->table("number_verification")
                                   ->insert(["user" => $this->getId(), "number" => $phone, "code" => $code]);
        }
        
        return (string) $code;
    }
    
    # KABOBSQL temporary fix
    # Tuesday, the 7th of January 2020 @ 22:43 <Menhera>: implementing quick fix to this problem and monitoring
    # NOTICE: this is an ongoing conversation, add your comments just above this line. Thanks!
    function setOnline(int $time): bool
    {
        $this->stateChanges("shortcode", $this->getRecord()->shortcode); #fix KABOBSQL
        $this->stateChanges("online", $time);
        
        return true;
    }
    
    function adminNotify(string $message): bool
    {
        $admId = OPENVK_ROOT_CONF["openvk"]["preferences"]["support"]["adminAccount"];
        if(!$admId)
            return false;
        else if(is_null($admin = (new Users)->get($admId)))
            return false;
        
        $cor = new Correspondence($admin, $this);
        $msg = new Message;
        $msg->setContent($message);
        $cor->sendMessage($msg, true);
        
        return true;
    }

    function isDeleted(): bool
    {
	if ($this->getRecord()->deleted == 1)
	return TRUE;
	else
        return FALSE;
    }

    
    use Traits\TSubscribable;
}