Dateien nach "Backend" hochladen

Backend/characters.php

@@ -0,0 +1,34 @@
+<?php
+require "db.php";
+$a = $_GET['action'] ?? '';
+$b = body();
+
+function find_user($name) {
+  $st=db()->prepare("SELECT user_id FROM users WHERE username=?");
+  $st->execute([$name]);
+  $r=$st->fetch();
+  return $r ? $r["user_id"] : 0;
+}
+
+if ($a==="create") {
+  $u=trim($b["username"]??"");
+  $c=trim($b["name"]??"");
+  if($u==""||$c=="") out(false,"invalid",[],400);
+  $uid=find_user($u);
+  if(!$uid) out(false,"user not found",[],404);
+  db()->prepare("INSERT INTO characters(user_id,name) VALUES(?,?)")->execute([$uid,$c]);
+  out(true,"created",["character_id"=>db()->lastInsertId()]);
+}
+if ($a==="list") {
+  $st=db()->query("SELECT c.character_id,c.name,u.username FROM characters c JOIN users u ON u.user_id=c.user_id");
+  out(true,"ok",["items"=>$st->fetchAll()]);
+}
+if ($a==="delete") {
+  $u=$_GET["username"]??""; $c=$_GET["name"]??"";
+  $uid=find_user($u);
+  if(!$uid) out(false,"user not found",[],404);
+  $d=db()->prepare("DELETE FROM characters WHERE user_id=? AND name=?");
+  $d->execute([$uid,$c]);
+  out(true,"deleted",["count"=>$d->rowCount()]);
+}
+out(false,"unknown action",[],404);

Backend/db.php

@@ -0,0 +1,27 @@
+<?php
+
+
+function db()
+{
+  static $pdo = null;
+  if ($pdo)
+    return $pdo;
+  $pdo = new PDO("mysql:host=127.0.0.1;dbname=vprmini_simple;charset=utf8mb4", "root", "root", [
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC
+  ]);
+  return $pdo;
+}
+function body()
+{
+  $raw = file_get_contents("php://input");
+  $j = json_decode($raw, true);
+  return is_array($j) ? $j : $_POST;
+}
+function out($ok, $msg, $data = [], $status = 200)
+{
+  http_response_code($status);
+  header("Content-Type: application/json");
+  echo json_encode(["ok" => $ok, "msg" => $msg] + $data);
+  exit;
+}

Backend/participants.php

@@ -0,0 +1,15 @@
+<?php
+require "db.php";$action=$_GET['action']??'';$b=body();
+if($action==="join"){
+  $sid=(int)($b["session_id"]??0);$uid=(int)($b["user_id"]??0);$role=$b["role"]??"Player";if(!in_array($role,["DM","Player"]))$role="Player";
+  $st=db()->prepare("INSERT INTO participants (session_id,user_id,role) VALUES (?,?,?)");$st->execute([$sid,$uid,$role]);
+  out(true,"joined",[],201);
+}
+if($action==="list"){ $sid=(int)($_GET["session_id"]??0);
+  $st=db()->prepare("SELECT p.user_id,u.username,p.role FROM participants p JOIN users u ON u.user_id=p.user_id WHERE p.session_id=?");$st->execute([$sid]);
+  out(true,"ok",["items"=>$st->fetchAll()]);
+}
+if($action==="leave"){ $sid=(int)($_GET["session_id"]??0);$uid=(int)($_GET["user_id"]??0);
+  $st=db()->prepare("DELETE FROM participants WHERE session_id=? AND user_id=?");$st->execute([$sid,$uid]);
+  out(true,"left",["count"=>$st->rowCount()]);}
+out(false,"unknown action",[],404);

Backend/sessions.php

@@ -0,0 +1,20 @@
+<?php
+require "db.php";
+$action=$_GET['action']??'';$b=body();
+if($action==="create"){
+  $owner=(int)($b["owner_id"]??0);$title=trim($b["title"]??"");
+  if($owner<1||$title==="") out(false,"invalid data",[],400);
+  $st=db()->prepare("INSERT INTO sessions (owner_id,title) VALUES (?,?)");$st->execute([$owner,$title]);
+  out(true,"created",["session_id"=>db()->lastInsertId()],201);
+}
+if($action==="list"){
+  $owner=isset($_GET["owner_id"])?(int)$_GET["owner_id"]:null;$q=trim($_GET["q"]??"");$sort=$_GET["sort"]??"created_at_desc";
+  $allowed=["created_at_asc"=>"created_at ASC","created_at_desc"=>"created_at DESC","title_asc"=>"title ASC","title_desc"=>"title DESC"];
+  $order=$allowed[$sort]??$allowed["created_at_desc"];
+  $sql="SELECT s.session_id,s.title,s.created_at,u.username FROM sessions s JOIN users u ON u.user_id=s.owner_id WHERE 1=1";$p=[];
+  if($owner){$sql.=" AND s.owner_id=?";$p[]=$owner;}if($q!==""){$sql.=" AND s.title LIKE ?";$p[]="%$q%";}$sql.=" ORDER BY $order";
+  $st=db()->prepare($sql);$st->execute($p);out(true,"ok",["items"=>$st->fetchAll()]);
+}
+if($action==="delete"){ $id=(int)($_GET["id"]??0);$st=db()->prepare("DELETE FROM sessions WHERE session_id=?");$st->execute([$id]);
+  out(true,"deleted",["count"=>$st->rowCount()]);}
+out(false,"unknown action",[],404);

Backend/setup.sql

@@ -0,0 +1,30 @@
+CREATE DATABASE IF NOT EXISTS vprmini_simple DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+USE vprmini_simple;
+
+--jakob
+
+DROP TABLE IF EXISTS characters;
+DROP TABLE IF EXISTS sessions;
+DROP TABLE IF EXISTS users;
+
+-- user für login
+CREATE TABLE users (
+  user_id INT AUTO_INCREMENT PRIMARY KEY,
+  username VARCHAR(40) NOT NULL UNIQUE,
+  pass_hash VARCHAR(255) NOT NULL
+);
+
+-- charaktere sind unique und gehören zu einem user
+CREATE TABLE characters (
+  character_id INT AUTO_INCREMENT PRIMARY KEY,
+  user_id INT NOT NULL,
+  name VARCHAR(50) NOT NULL,
+  CONSTRAINT fk_char_user FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE,
+  CONSTRAINT ux_user_char UNIQUE(user_id, name)
+);
+
+-- session 
+CREATE TABLE sessions (
+  session_id INT AUTO_INCREMENT PRIMARY KEY,
+  title VARCHAR(100) NOT NULL
+);