import os
import io
import requests
from PIL import Image
from pptx import Presentation
from pptx.util import Inches, Pt
from pptx.dml.color import RGBColor
from pptx.enum.text import PP_ALIGN

# Stile und Konstanten
TITLE_FONT = 'Helvetica Neue'
BODY_FONT = 'Helvetica Neue'
PRIMARY_COLOR = RGBColor(0, 122, 255)  # Apple Blau
SECONDARY_COLOR = RGBColor(88, 86, 214)  # Apple Lila
ACCENT_COLOR = RGBColor(255, 149, 0)  # Apple Orange
DARK_TEXT = RGBColor(50, 50, 50)
LIGHT_TEXT = RGBColor(240, 240, 240)
BACKGROUND_COLOR = RGBColor(250, 250, 250)
SLIDE_WIDTH = Inches(13.333)
SLIDE_HEIGHT = Inches(7.5)

# Ausgabepfad
output_dir = os.path.dirname(os.path.abspath(__file__))
output_path = os.path.join(output_dir, 'MYP_Backend_Schulung_Enhanced.pptx')
images_dir = os.path.join(output_dir, 'presentation_images')

# Verzeichnis für Bilder erstellen, falls es nicht existiert
os.makedirs(images_dir, exist_ok=True)

# Funktion zum Herunterladen von Stock-Bildern (nur Beispiel, Sie können auch eigene Bilder verwenden)
def download_stock_image(url, filename):
    try:
        image_path = os.path.join(images_dir, filename)
        # Wenn das Bild bereits existiert, nicht erneut herunterladen
        if os.path.exists(image_path):
            return image_path
            
        response = requests.get(url, stream=True)
        if response.status_code == 200:
            with open(image_path, 'wb') as f:
                f.write(response.content)
            return image_path
        else:
            print(f"Fehler beim Herunterladen des Bildes: {response.status_code}")
            return None
    except Exception as e:
        print(f"Fehler: {e}")
        return None

# Platzhalterbilder für die Präsentation
# Im echten Einsatz würden Sie eigene Bilder oder lizenzfreie Bilder verwenden
image_urls = {
    "header": "https://cdn.pixabay.com/photo/2017/08/10/02/05/tiles-shapes-2617112_1280.jpg",
    "3d_printer": "https://cdn.pixabay.com/photo/2019/07/06/11/15/3d-printer-4320296_1280.jpg",
    "backend": "https://cdn.pixabay.com/photo/2016/11/27/21/42/stock-1863880_1280.jpg",
    "database": "https://cdn.pixabay.com/photo/2017/06/14/16/20/network-2402637_1280.jpg",
    "api": "https://cdn.pixabay.com/photo/2018/05/04/20/01/website-3374825_1280.jpg",
    "scheduler": "https://cdn.pixabay.com/photo/2018/01/17/07/06/laptop-3087585_1280.jpg",
    "security": "https://cdn.pixabay.com/photo/2017/11/19/23/56/cyber-security-2965030_1280.jpg",
    "summary": "https://cdn.pixabay.com/photo/2019/04/14/10/27/book-4126483_1280.jpg"
}

# Bilder herunterladen
image_paths = {}
for key, url in image_urls.items():
    filename = f"{key}.jpg"
    image_path = download_stock_image(url, filename)
    if image_path:
        image_paths[key] = image_path
    else:
        print(f"Konnte Bild {key} nicht herunterladen")

# Neue Präsentation erstellen
prs = Presentation()

# Foliengröße auf 16:9 setzen
prs.slide_width = SLIDE_WIDTH
prs.slide_height = SLIDE_HEIGHT

# Hilfsfunktion für einheitliche Formatierung
def apply_text_style(paragraph, font_size, bold=False, color=DARK_TEXT, alignment=PP_ALIGN.LEFT):
    paragraph.alignment = alignment
    run = paragraph.runs[0]
    run.font.name = BODY_FONT
    run.font.size = Pt(font_size)
    run.font.bold = bold
    run.font.color.rgb = color

# Hilfsfunktion zum Hinzufügen eines Bildes zu einer Folie
def add_image_to_slide(slide, image_path, left, top, width, height=None, keep_ratio=True):
    if not os.path.exists(image_path):
        print(f"Bildpfad existiert nicht: {image_path}")
        return None
        
    img = Image.open(image_path)
    width_inches = width
    
    if keep_ratio and height is None:
        # Seitenverhältnis beibehalten
        img_ratio = img.height / img.width
        height_inches = width_inches * img_ratio
    else:
        height_inches = height
    
    return slide.shapes.add_picture(image_path, left, top, width=width_inches, height=height_inches)

# Hilfsfunktion zum Erstellen eines abgerundeten Farbbereichs (als Ersatz für abgerundete Rechtecke)
def add_rectangle_to_slide(slide, left, top, width, height, color=PRIMARY_COLOR):
    shape = slide.shapes.add_shape(1, left, top, width, height)  # 1 = Rechteck
    shape.fill.solid()
    shape.fill.fore_color.rgb = color
    shape.line.fill.solid()
    shape.line.fill.fore_color.rgb = color
    return shape

# ------------- FOLIE 1: TITELFOLIE -------------
slide_layout = prs.slide_layouts[0]  # Titelfolie
slide = prs.slides.add_slide(slide_layout)

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

# Hintergrundbild (wenn verfügbar)
if "header" in image_paths:
    header_img = add_image_to_slide(slide, 
                                   image_paths["header"], 
                                   Inches(0), 
                                   Inches(0), 
                                   SLIDE_WIDTH, 
                                   SLIDE_HEIGHT,
                                   keep_ratio=False)
    # Bild in den Hintergrund
    if header_img:
        header_img.z_order = 0

# Halbtransparentes Overlay
overlay = add_rectangle_to_slide(slide,
                                Inches(0),
                                Inches(0),
                                SLIDE_WIDTH,
                                SLIDE_HEIGHT,
                                RGBColor(0, 0, 0))
overlay.fill.transparency = 0.4  # 40% Transparenz
overlay.z_order = 1

# Titel hinzufügen
title_shape = slide.shapes.title
title_shape.text = "MYP Platform"
title_paragraph = title_shape.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 64, bold=True, color=LIGHT_TEXT, alignment=PP_ALIGN.CENTER)
title_shape.z_order = 2

# Untertitel hinzufügen
subtitle_shape = slide.placeholders[1]
subtitle_shape.text = "3D-Drucker Reservierungssystem\nBackend-Schulung"
subtitle_paragraph = subtitle_shape.text_frame.paragraphs[0]
apply_text_style(subtitle_paragraph, 36, color=LIGHT_TEXT, alignment=PP_ALIGN.CENTER)
subtitle_shape.z_order = 2

# ------------- FOLIE 2: ÜBERBLICK -------------
slide = prs.slides.add_slide(prs.slide_layouts[1])

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

title = slide.shapes.title
title.text = "Systemüberblick"
title_paragraph = title.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 44, bold=True, color=PRIMARY_COLOR, alignment=PP_ALIGN.LEFT)

# Inhalt
content = slide.placeholders[1]
tf = content.text_frame

p = tf.paragraphs[0]
p.text = "• Reservierungssystem für 3D-Drucker"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Automatische Steuerung von Smart Plugs"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Echtzeit-Überwachung von Druckaufträgen"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Administrationsfunktionen"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Statistik und Analyse"
apply_text_style(p, 28)

# Bild einfügen (wenn verfügbar)
if "3d_printer" in image_paths:
    printer_img = add_image_to_slide(slide, 
                                   image_paths["3d_printer"], 
                                   Inches(7), 
                                   Inches(2), 
                                   Inches(5))

# ------------- FOLIE 3: TECHNOLOGIE-STACK -------------
slide = prs.slides.add_slide(prs.slide_layouts[1])

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

title = slide.shapes.title
title.text = "Technologie-Stack"
title_paragraph = title.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 44, bold=True, color=PRIMARY_COLOR, alignment=PP_ALIGN.LEFT)

# Inhalt
content = slide.placeholders[1]
tf = content.text_frame

p = tf.paragraphs[0]
p.text = "• Backend: Python 3.11 mit Flask"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = SECONDARY_COLOR

p = tf.add_paragraph()
p.text = "• Frontend: HTML/CSS/JavaScript mit Tailwind CSS"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Datenbank: SQLite mit SQLAlchemy ORM"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = ACCENT_COLOR

p = tf.add_paragraph()
p.text = "• Authentifizierung: Flask-Login"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Hardware-Integration: PyP110 für Tapo Smart Plug Steuerung"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Automatisierung: Integrierter Job-Scheduler"
apply_text_style(p, 28)

# Bild einfügen (wenn verfügbar)
if "backend" in image_paths:
    backend_img = add_image_to_slide(slide, 
                                  image_paths["backend"], 
                                  Inches(7), 
                                  Inches(2), 
                                  Inches(5))

# ------------- FOLIE 4: ARCHITEKTUR -------------
slide = prs.slides.add_slide(prs.slide_layouts[1])

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

title = slide.shapes.title
title.text = "Backend-Architektur"
title_paragraph = title.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 44, bold=True, color=PRIMARY_COLOR, alignment=PP_ALIGN.LEFT)

# Inhalt
content = slide.placeholders[1]
tf = content.text_frame

p = tf.paragraphs[0]
p.text = "• Flask-App: Zentrale Anwendungslogik"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = PRIMARY_COLOR

p = tf.add_paragraph()
p.text = "• Blueprints: Modulare Strukturierung (auth, user, kiosk)"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Models: SQLAlchemy ORM für Datenbankkommunikation"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = ACCENT_COLOR

p = tf.add_paragraph()
p.text = "• Utils: Job-Scheduler, Logging, Template-Helpers"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• API: RESTful-Endpunkte für Frontend-Kommunikation"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = SECONDARY_COLOR

# ------------- FOLIE 5: DATENMODELL -------------
slide = prs.slides.add_slide(prs.slide_layouts[1])

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

title = slide.shapes.title
title.text = "Datenmodell"
title_paragraph = title.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 44, bold=True, color=PRIMARY_COLOR, alignment=PP_ALIGN.LEFT)

# Inhalt
content = slide.placeholders[1]
tf = content.text_frame

p = tf.paragraphs[0]
p.text = "• User: Benutzer mit Rollen und Authentifizierung"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Printer: 3D-Drucker mit Smart-Plug-Konfigurationen"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = ACCENT_COLOR

p = tf.add_paragraph()
p.text = "• Job: Druckaufträge mit Status und Zeitplanung"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = SECONDARY_COLOR

p = tf.add_paragraph()
p.text = "• Stats: Systemstatistiken und Metriken"
apply_text_style(p, 28)

# Bild einfügen (wenn verfügbar)
if "database" in image_paths:
    db_img = add_image_to_slide(slide, 
                               image_paths["database"], 
                               Inches(7), 
                               Inches(2), 
                               Inches(5))

# ------------- FOLIE 6: API-ENDPUNKTE -------------
slide = prs.slides.add_slide(prs.slide_layouts[1])

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

title = slide.shapes.title
title.text = "API-Endpunkte"
title_paragraph = title.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 44, bold=True, color=PRIMARY_COLOR, alignment=PP_ALIGN.LEFT)

# Inhalt
content = slide.placeholders[1]
tf = content.text_frame

p = tf.paragraphs[0]
p.text = "• /api/jobs: Druckaufträge verwalten"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = SECONDARY_COLOR

p = tf.add_paragraph()
p.text = "• /api/printers: Drucker verwalten"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = ACCENT_COLOR

p = tf.add_paragraph()
p.text = "• /api/users: Benutzer verwalten"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• /api/stats: Statistiken abrufen"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• /api/scheduler: Scheduler steuern"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = PRIMARY_COLOR

# Bild einfügen (wenn verfügbar)
if "api" in image_paths:
    api_img = add_image_to_slide(slide, 
                               image_paths["api"], 
                               Inches(7), 
                               Inches(2), 
                               Inches(5))

# ------------- FOLIE 7: JOB-SCHEDULER -------------
slide = prs.slides.add_slide(prs.slide_layouts[1])

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

title = slide.shapes.title
title.text = "Job-Scheduler"
title_paragraph = title.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 44, bold=True, color=PRIMARY_COLOR, alignment=PP_ALIGN.LEFT)

# Inhalt
content = slide.placeholders[1]
tf = content.text_frame

p = tf.paragraphs[0]
p.text = "• Automatische Steuerung der Drucker"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Einschalten bei Auftragsstart"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = ACCENT_COLOR

p = tf.add_paragraph()
p.text = "• Ausschalten bei Auftragsende"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = ACCENT_COLOR

p = tf.add_paragraph()
p.text = "• Statusüberwachung und -aktualisierung"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Sammeln von Statistiken"
apply_text_style(p, 28)

# Bild einfügen (wenn verfügbar)
if "scheduler" in image_paths:
    scheduler_img = add_image_to_slide(slide, 
                                     image_paths["scheduler"], 
                                     Inches(7), 
                                     Inches(2), 
                                     Inches(5))

# ------------- FOLIE 8: LOGGING-SYSTEM -------------
slide = prs.slides.add_slide(prs.slide_layouts[1])

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

title = slide.shapes.title
title.text = "Logging-System"
title_paragraph = title.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 44, bold=True, color=PRIMARY_COLOR, alignment=PP_ALIGN.LEFT)

# Inhalt
content = slide.placeholders[1]
tf = content.text_frame

p = tf.paragraphs[0]
p.text = "• Separate Logs für verschiedene Bereiche:"
apply_text_style(p, 28)
p.runs[0].font.bold = True

p = tf.add_paragraph()
p.text = "  - App-Logs: Allgemeine Anwendungslogs"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "  - Auth-Logs: Authentifizierungsereignisse"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "  - Job-Logs: Druckauftragsoperationen"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = SECONDARY_COLOR

p = tf.add_paragraph()
p.text = "  - Printer-Logs: Druckerstatusänderungen"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = ACCENT_COLOR

p = tf.add_paragraph()
p.text = "  - Scheduler-Logs: Automatisierungsaktionen"
apply_text_style(p, 28)

# ------------- FOLIE 9: SICHERHEITSKONZEPT -------------
slide = prs.slides.add_slide(prs.slide_layouts[1])

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

title = slide.shapes.title
title.text = "Sicherheitskonzept"
title_paragraph = title.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 44, bold=True, color=PRIMARY_COLOR, alignment=PP_ALIGN.LEFT)

# Inhalt
content = slide.placeholders[1]
tf = content.text_frame

p = tf.paragraphs[0]
p.text = "• Benutzerauthentifizierung mit bcrypt"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = SECONDARY_COLOR

p = tf.add_paragraph()
p.text = "• Rollenbasierte Zugriffskontrolle"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• CSRF-Schutz bei Formularen"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Besitzer-Check für Druckaufträge"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = ACCENT_COLOR

p = tf.add_paragraph()
p.text = "• Sichere HTTP-Header"
apply_text_style(p, 28)

# Bild einfügen (wenn verfügbar)
if "security" in image_paths:
    security_img = add_image_to_slide(slide, 
                                    image_paths["security"], 
                                    Inches(7), 
                                    Inches(2), 
                                    Inches(5))

# ------------- FOLIE 10: ZUSAMMENFASSUNG -------------
slide = prs.slides.add_slide(prs.slide_layouts[1])

# Hintergrund anpassen
background = slide.background
fill = background.fill
fill.solid()
fill.fore_color.rgb = BACKGROUND_COLOR

title = slide.shapes.title
title.text = "Zusammenfassung"
title_paragraph = title.text_frame.paragraphs[0]
apply_text_style(title_paragraph, 44, bold=True, color=PRIMARY_COLOR, alignment=PP_ALIGN.LEFT)

# Inhalt
content = slide.placeholders[1]
tf = content.text_frame

p = tf.paragraphs[0]
p.text = "• Vollständige Lösung für 3D-Drucker-Management"
apply_text_style(p, 28)
p.runs[0].font.bold = True

p = tf.add_paragraph()
p.text = "• Modulare Architektur für einfache Erweiterbarkeit"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Robuste Sicherheitskonzepte"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = SECONDARY_COLOR

p = tf.add_paragraph()
p.text = "• Umfassendes Logging und Überwachung"
apply_text_style(p, 28)

p = tf.add_paragraph()
p.text = "• Automatisierung von Routineaufgaben"
apply_text_style(p, 28)
p.runs[0].font.color.rgb = ACCENT_COLOR

# Bild einfügen (wenn verfügbar)
if "summary" in image_paths:
    summary_img = add_image_to_slide(slide, 
                                   image_paths["summary"], 
                                   Inches(7), 
                                   Inches(2), 
                                   Inches(5))

# Präsentation speichern
prs.save(output_path)
print(f"Verbesserte Präsentation wurde erstellt: {output_path}")