Goodle/Admin backend/signup.php

<?php
header('Content-type: application/json');
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    # Gets json from POST
    $json = json_decode(file_get_contents('php://input'), true);
    
    # Input validation for username y password
    $username = $json["username"];
    $password = $json["password"];
    if(strlen($username) == 0 or strlen($password) == 0){
        header("400 Bad Request", true, 400);
        exit();
    }
    
    # Hashed password
    $hash = password_hash($password,  PASSWORD_BCRYPT);

    include 'db.php';

    # Starts a transaction
    $conn->autocommit(FALSE);
    $conn->begin_transaction(MYSQLI_TRANS_START_READ_WRITE);

    # Inserts into login
    $sql = "INSERT INTO login (username, hash) VALUES ('".$username."', '".$hash."')";
    if($conn->query($sql) === FALSE){
        $conn->rollback();
        $conn->close();
        header("500 Internal Server Error", true, 500);
        exit();
    }

    # Grabs all data
    $userid = $conn->insert_id;
    $nombre = $json["nombre"];
    $organizacion = $json["organizacion"];
    $puesto = $json["puesto"];
    $urbanizacion = $json["urbanizacion"];
    $calle = $json["calle"];
    $pueblo = $json["pueblo"];
    $cpostal = $json["cpostal"];
    $telefono = $json["telefono"];
    $correo = $json["correo"];

    # Checks if necessary data is empty
    if(strlen($nombre) == 0 or strlen($urbanizacion) == 0 or strlen($calle) == 0 or strlen($pueblo) == 0 or 
        strlen($cpostal) == 0 or strlen($telefono) == 0 or strlen($correo) == 0 ){
        $conn->rollback();
        $conn->close();
        header("400 Bad Request", true, 400);
        exit();
    }

    # Inserts into miembros
    $sql = "INSERT INTO miembros (userid, nombre, organizacion, puesto, urbanizacion, calle, pueblo, cpostal, telefono, correo) VALUES "
            ."('".$userid."', '".$nombre."', '".$organizacion."', '".$puesto."', '".$urbanizacion.
            "', '".$calle."', '".$pueblo."', '".$cpostal."', '".$telefono."', '".$correo."')";
            
    if($conn->query($sql) === FALSE){
        $conn->rollback();
        $conn->close();
        header("500 Internal Server Error", true, 500);
        exit();
    }

    # Commits changes
    $conn->commit();
    $conn->close();

    # Returns 200
    header("200 OK", true, 200);
    exit();
    
} else {
    header($_SERVER["SERVER_PROTOCOL"]." 405 Method Not Allowed", true, 405);
    exit();
}
?>