<?php

namespace App\Controller;

use Exception;
use PDO;
use PDOException;

/**
 *
 */
class ApiKeys
{
	public function __construct(private DatabaseConnection $databaseConnection)
	{}
	
	
	/**
	 * @return array|false
	 */
	public function findAll(): bool|array
	{
		$sql = "
            SELECT id, name, api_token_prefix, api_token
            FROM " . DatabaseConnection::TABLE_USER;
		
		try {
			$statement = $this->databaseConnection->getConnection()->query($sql);
			return $statement->fetchAll(mode: PDO::FETCH_ASSOC);
		} catch (PDOException $e) {
			exit($e->getMessage());
		}
	}
	
	
	/**
	 * @param Int $id
	 *
	 * @return array|false
	 */
	public function findByID(Int $id): bool|array
	{
		$sql = "
			SELECT name, api_token_prefix, api_token
			FROM " . DatabaseConnection::TABLE_USER . "
            WHERE id = :id;
        ";
		
		try {
			$statement = $this->databaseConnection->getConnection()->prepare($sql);
			$statement->bindParam(param: ':id', var: $id);
			$statement->execute();
			return $statement->fetch(mode: PDO::FETCH_ASSOC);
		} catch (PDOException $e) {
			exit($e->getMessage());
		}
	}
	
	
	/**
	 * @param String $prefix
	 *
	 * @return bool|array
	 */
	public function findByPrefix(String $prefix): bool|array
	{
		$sql = "
			SELECT name, api_token
			FROM " . DatabaseConnection::TABLE_USER . "
            WHERE api_token_prefix = :prefix";
		
		try {
			$statement = $this->databaseConnection->getConnection()->prepare($sql);
			$statement->bindParam(param: ':prefix', var: $prefix);
			$statement->execute();
			return $statement->fetch(mode: PDO::FETCH_ASSOC);
		} catch (PDOException $e) {
			exit($e->getMessage());
		}
	}
	
	
	/**
	 * @return array|void
	 */
	public function create(String $name = '')
	{
		$tokenPrefix = uniqid();
		$result['tokenPrefix'] = $tokenPrefix;
		try {
			$key = bin2hex(random_bytes(length: 24));
			$result['key'] = $key;
		} catch (Exception $e) {
			echo $e->getMessage() . PHP_EOL;
			exit(1);
		}
		$token = password_hash(password: $tokenPrefix . '.' . $key, algo: PASSWORD_ARGON2ID);
		
		$sql = "
            INSERT INTO " . DatabaseConnection::TABLE_USER . " (name, api_token_prefix, api_token)
            VALUES (:token_prefix, :token)";
		
		try {
			$statement = $this->databaseConnection->getConnection()->prepare($sql);
			$statement->bindParam(param: ':token_prefix', var: $tokenPrefix);
			$statement->bindParam(param: ':token', var: $token);
			$statement->bindParam(param: ':name', var: $name);
			
			$statement->execute();
			$result['row'] = $this->databaseConnection->getConnection()->lastInsertId();
			return $result;
		} catch (PDOException $e) {
			exit($e->getMessage());
		}
	}
	
	
	/**
	 * @param $id
	 *
	 * @return int
	 */
	public function delete($id): int
	{
		$sql = "
            DELETE FROM " . DatabaseConnection::TABLE_USER . "
            WHERE id = :id";
		
		try {
			$statement = $this->databaseConnection->getConnection()->prepare($sql);
			$statement->bindParam(param: 'id', var: $id);
			$statement->execute();
			return $statement->rowCount();
		} catch (PDOException $e) {
			exit($e->getMessage());
		}
	}
	
}