<?php
declare(strict_types=1);

namespace Unsupervised\Schedular\Auth;

class InviteRepository {

	private string $table;

	public function __construct( private \wpdb $db ) {
		$this->table = $db->prefix . 'us_invites';
	}

	/**
	 * Persist an invite. Returns the new row id, or 0 when the insert failed —
	 * callers must not hand out a registration link for an unstored token.
	 */
	public function insert( Invite $invite ): int {
		$result = $this->db->insert(
			$this->table,
			[
				'email'            => $invite->email,
				'token'            => $invite->token,
				'role'             => $invite->role,
				'kind'             => $invite->kind,
				'offering_id'      => $invite->offeringId,
				'status'           => $invite->status,
				'invited_by'       => $invite->invitedBy,
				'accepted_user_id' => $invite->acceptedUserId,
				'created_at'       => current_time( 'mysql' ),
				'accepted_at'      => $invite->acceptedAt,
				'expires_at'       => $invite->expiresAt,
			],
			[ '%s', '%s', '%s', '%s', '%d', '%s', '%d', '%d', '%s', '%s', '%s' ]
		);

		return false === $result ? 0 : $this->db->insert_id;
	}

	public function findByToken( string $token ): ?Invite {
		$row = $this->db->get_row(
			$this->db->prepare( 'SELECT * FROM %i WHERE token = %s', $this->table, $token )
		);

		return $row ? Invite::fromRow( $row ) : null;
	}

	public function findById( int $id ): ?Invite {
		$row = $this->db->get_row(
			$this->db->prepare( 'SELECT * FROM %i WHERE id = %d', $this->table, $id )
		);

		return $row ? Invite::fromRow( $row ) : null;
	}

	/**
	 * The most recent pending invite for an email, if any.
	 */
	public function findPendingByEmail( string $email ): ?Invite {
		$row = $this->db->get_row(
			$this->db->prepare(
				'SELECT * FROM %i WHERE email = %s AND status = %s ORDER BY id DESC LIMIT 1',
				$this->table,
				$email,
				Invite::STATUS_PENDING
			)
		);

		return $row ? Invite::fromRow( $row ) : null;
	}

	/**
	 * All invites awaiting acceptance, newest first.
	 *
	 * @return list<Invite>
	 */
	public function findPending(): array {
		$rows = $this->db->get_results(
			$this->db->prepare(
				'SELECT * FROM %i WHERE status = %s ORDER BY created_at DESC',
				$this->table,
				Invite::STATUS_PENDING
			)
		);

		return array_map( Invite::fromRow( ... ), $rows ?? [] );
	}

	public function markAccepted( int $id, int $userId ): bool {
		return false !== $this->db->update(
			$this->table,
			[
				'status'           => Invite::STATUS_ACCEPTED,
				'accepted_user_id' => $userId,
				'accepted_at'      => current_time( 'mysql' ),
			],
			[ 'id' => $id ],
			[ '%s', '%d', '%s' ],
			[ '%d' ]
		);
	}

	public function revoke( int $id ): bool {
		return false !== $this->db->update(
			$this->table,
			[ 'status' => Invite::STATUS_REVOKED ],
			[ 'id' => $id ],
			[ '%s' ],
			[ '%d' ]
		);
	}
}