Groups.php

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<?php

namespace Elgg\Database\Seeds;

class Groups extends Seed {

    private $users;

    private $visibility = [
        ACCESS_PUBLIC,
        ACCESS_LOGGED_IN,
        ACCESS_PRIVATE,
    ];

    private $content_access_modes = [
        \ElggGroup::CONTENT_ACCESS_MODE_MEMBERS_ONLY,
        \ElggGroup::CONTENT_ACCESS_MODE_UNRESTRICTED,
    ];

    private $membership = [
        ACCESS_PUBLIC,
        ACCESS_PRIVATE,
    ];

    public function seed() {

        $count_groups = function () {
            return elgg_get_entities_from_metadata([
                'types' => 'group',
                'metadata_names' => '__faker',
                'count' => true,
            ]);
        };

        $count_members = function ($group) {
            return elgg_get_entities_from_relationship([
                'types' => 'user',
                'relationship' => 'member',
                'relationship_guid' => $group->getGUID(),
                'inverse_relationship' => true,
                'metadata_names' => '__faker',
                'count' => true,
            ]);
        };

        $exclude = [];

        while ($count_groups() < $this->limit) {
            $group = $this->getRandomGroup($exclude);
            if (!$group) {
                $group = $this->createGroup([
                    'access_id' => $this->getRandomVisibility(),
                ], [
                    'content_access_mode' => $this->getRandomContentAccessMode(),
                    'membership' => $this->getRandomMembership(),
                ]);
                if (!$group) {
                    continue;
                }
            }

            $exclude[] = $group->guid;

            if ($count_members($group) > 1) {
                // exclude owner from count
                continue;
            }

            $members_limit = $this->faker->numberBetween(5, 10);

            $members_exclude = [];

            while ($count_members($group) - 1 < $members_limit) {

                $member = $this->getRandomUser($members_exclude);
                if (!$member) {
                    $member = $this->createUser();
                    if (!$member) {
                        continue;
                    }
                }

                $members_exclude[] = $member->guid;

                if ($group->join($member)) {
                    $this->log("User $member->name [guid: $member->guid] joined group $group->name [guid: $group->guid]");
                }

                if (!$group->isPublicMembership()) {
                    $invitee = $this->getRandomUser($members_exclude);
                    if ($invitee) {
                        $members_exclude[] = $invitee->guid;
                        if (!check_entity_relationship($invitee->guid, 'member', $group->guid)) {
                            add_entity_relationship($group->guid, 'invited', $invitee->guid);
                            $this->log("User $invitee->name [guid: $invitee->guid] was invited to $group->name [guid: $group->guid]");
                        }
                    }

                    $requestor = $this->getRandomUser($members_exclude);
                    if ($requestor) {
                        $members_exclude[] = $requestor->guid;
                        if (!check_entity_relationship($group->guid, 'invited', $requestor->guid)
                            && !check_entity_relationship($requestor->guid, 'member', $group->guid)
                        ) {
                            add_entity_relationship($requestor->guid, 'membership_request', $group->guid);
                            $this->log("User $invitee->name [guid: $invitee->guid] requested to join $group->name [guid: $group->guid]");
                        }
                    }
                }
            }

        }

    }

    public function unseed() {

        $groups = elgg_get_entities_from_metadata([
            'types' => 'group',
            'metadata_names' => '__faker',
            'limit' => 0,
            'batch' => true,
        ]);

        /* @var $groups \ElggBatch */

        $groups->setIncrementOffset(false);

        foreach ($groups as $group) {
            if ($group->delete()) {
                $this->log("Deleted group $group->guid");
            } else {
                $this->log("Failed to delete group $group->guid");
            }
        }
    }

    public function getRandomVisibility() {
        $key = array_rand($this->visibility, 1);

        return $this->visibility[$key];
    }

    public function getRandomContentAccessMode() {
        $key = array_rand($this->content_access_modes, 1);

        return $this->content_access_modes[$key];
    }

    public function getRandomMembership() {
        $key = array_rand($this->membership, 1);

        return $this->membership[$key];
    }
}