#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Scenar Creator — CGI web application for creating timetables from Excel data.
Main UI logic and HTTP handling.
"""
import sys
import os
# Fallback sys.path for CGI context (add both parent and current directory)
DOCROOT = "/var/www/htdocs"
SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
PARENT_DIR = os.path.dirname(SCRIPT_DIR)
# Try multiple paths for package resolution
for path in [DOCROOT, PARENT_DIR, SCRIPT_DIR]:
if path not in sys.path:
sys.path.insert(0, path)
import html
import base64
import logging
import tempfile
import urllib.parse
from io import BytesIO
import pandas as pd
from scenar.core import (
read_excel, create_timetable, get_program_types,
validate_inputs, ScenarsError, ValidationError, TemplateError,
parse_inline_schedule, parse_inline_types
)
# ===== Config =====
# Determine DOCROOT based on environment
_default_docroot = "/var/www/htdocs"
DOCROOT = _default_docroot
# Try to use default, but fall back if permissions fail
try:
# Try to use /var/www/htdocs if in production
if os.path.exists("/var/www"):
os.makedirs(_default_docroot, exist_ok=True)
DOCROOT = _default_docroot
else:
# Local dev: use current directory
DOCROOT = os.getcwd()
if "pytest" in sys.modules:
# In tests: use temp directory
DOCROOT = tempfile.gettempdir()
except (OSError, PermissionError):
# If can't use /var/www, use current directory or temp
DOCROOT = os.getcwd()
if "pytest" in sys.modules or not os.access(DOCROOT, os.W_OK):
DOCROOT = tempfile.gettempdir()
TMP_DIR = os.path.join(DOCROOT, "tmp")
DEFAULT_COLOR = "#ffffff"
MAX_FILE_SIZE_MB = 10
# ===================
# Setup logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
print("Content-Type: text/html; charset=utf-8")
print()
# Simple CGI form parser (replaces deprecated cgi.FieldStorage for Python 3.13+)
class FileItem:
"""Mimics cgi.FieldStorage file item for multipart uploads."""
def __init__(self, filename, content):
self.filename = filename
self.file = BytesIO(content)
self.value = content
class SimpleFieldStorage(dict):
"""Simple dictionary-based form parser for GET/POST data and file uploads."""
def __init__(self):
super().__init__()
self._parse_form()
def _parse_form(self):
"""Parse GET/POST parameters into dict, including multipart file uploads."""
# Parse GET parameters
query_string = os.environ.get('QUERY_STRING', '')
if query_string:
for key, value in urllib.parse.parse_qsl(query_string):
self[key] = value
# Parse POST parameters
content_type = os.environ.get('CONTENT_TYPE', '')
content_length_str = os.environ.get('CONTENT_LENGTH', '0').strip()
content_length = int(content_length_str) if content_length_str else 0
if content_length == 0:
return
# Read body
try:
body = sys.stdin.buffer.read(content_length)
except (AttributeError, TypeError):
body_str = sys.stdin.read(content_length)
body = body_str.encode('utf-8') if isinstance(body_str, str) else body_str
if content_type.startswith('application/x-www-form-urlencoded'):
# URL-encoded form
for key, value in urllib.parse.parse_qsl(body.decode('utf-8')):
self[key] = value
elif content_type.startswith('multipart/form-data'):
# Multipart form (file upload)
boundary_match = content_type.split('boundary=')
if len(boundary_match) > 1:
boundary = boundary_match[1].split(';')[0].strip('"')
self._parse_multipart(body, boundary)
def _parse_multipart(self, body: bytes, boundary: str):
"""Parse multipart/form-data body."""
boundary_bytes = f'--{boundary}'.encode('utf-8')
end_boundary = f'--{boundary}--'.encode('utf-8')
parts = body.split(boundary_bytes)
for part in parts:
if part.startswith(b'--') or not part.strip():
continue
# Split headers from content
try:
header_end = part.find(b'\r\n\r\n')
if header_end == -1:
header_end = part.find(b'\n\n')
if header_end == -1:
continue
headers = part[:header_end].decode('utf-8', errors='ignore')
content = part[header_end + 2:]
else:
headers = part[:header_end].decode('utf-8', errors='ignore')
content = part[header_end + 4:]
except:
continue
# Remove trailing boundary marker and whitespace
if content.endswith(b'\r\n'):
content = content[:-2]
elif content.endswith(b'\n'):
content = content[:-1]
# Parse Content-Disposition header
name = None
filename = None
for line in headers.split('\n'):
if 'Content-Disposition:' in line:
# Extract name and filename
import re as regex
name_match = regex.search(r'name="([^"]*)"', line)
if name_match:
name = name_match.group(1)
filename_match = regex.search(r'filename="([^"]*)"', line)
if filename_match:
filename = filename_match.group(1)
if name:
if filename:
# File field
self[name] = FileItem(filename, content)
else:
# Regular form field
self[name] = content.decode('utf-8', errors='ignore').strip()
def __contains__(self, key):
"""Check if key exists (for 'in' operator)."""
return super().__contains__(key)
def getvalue(self, key, default=''):
"""Get value from form, mimicking cgi.FieldStorage API."""
val = self.get(key, default)
if isinstance(val, FileItem):
return val.value
return val
form = SimpleFieldStorage()
title = form.getvalue('title', '').strip()
detail = form.getvalue('detail', '').strip()
show_debug = form.getvalue('debug') == 'on'
step = form.getvalue('step', '1')
file_item = form.get('file', None) # Get file upload if present
def render_error(message: str) -> None:
"""Render error page."""
print(f'''
Chyba - Scenar Creator
''')
# ====== Main flow ======
if step == '1':
render_home()
elif step == '2' and file_item is not None and file_item.filename:
try:
file_content = file_item.file.read()
file_size = len(file_content)
# Validate inputs
validate_inputs(title, detail, file_size)
# Read Excel
data, error_rows = read_excel(file_content, show_debug)
if data.empty:
render_error("Načtená data jsou prázdná nebo obsahují neplatné hodnoty. Zkontrolujte vstupní soubor.")
else:
# Extract program types
program_types = sorted([str(t).strip() for t in data["Typ"].dropna().unique()])
file_content_base64 = base64.b64encode(file_content).decode('utf-8')
print('''
Scenar Creator - Typy programu
Typy programu
Vyplň popis a barvu pro každý typ programu:
''')
except ValidationError as e:
render_error(f"Chyba validace: {str(e)}")
except (TemplateError, ScenarsError) as e:
render_error(f"Chyba: {str(e)}")
except Exception as e:
logger.error(f"Unexpected error: {str(e)}")
render_error(f"Neočekávaná chyba: {str(e)}")
elif step == '2b':
"""Load Excel data into inline editor for editing."""
try:
# Get file content from either file upload or base64
file_content = None
if file_item is not None and file_item.filename:
file_content = file_item.file.read()
else:
file_content_base64 = form.getvalue('file_content_base64', '')
if file_content_base64:
file_content = base64.b64decode(file_content_base64)
if not file_content:
render_error("Chyba: Soubor nebyl nalezen.")
else:
file_size = len(file_content)
# Validate inputs
validate_inputs(title, detail, file_size)
# Read Excel
data, error_rows = read_excel(file_content, show_debug)
if data.empty:
render_error("Načtená data jsou prázdná nebo obsahují neplatné hodnoty. Zkontrolujte vstupní soubor.")
else:
# Extract program types and prepare for inline editor
program_types = sorted([str(t).strip() for t in data["Typ"].dropna().unique()])
# Render inline editor with loaded data
print('''
Scenar Creator - Upravit scénář
Upravit scénář
''')
except ValidationError as e:
render_error(f"Chyba validace: {str(e)}")
except (TemplateError, ScenarsError) as e:
render_error(f"Chyba: {str(e)}")
except Exception as e:
logger.error(f"Unexpected error in 2b: {str(e)}")
render_error(f"Neočekávaná chyba: {str(e)}")
elif step == '3' and title and detail:
try:
file_content_base64 = form.getvalue('file_content_base64', '')
if not file_content_base64:
render_error("Chyba: Soubor nebyl nalezen.")
else:
file_content = base64.b64decode(file_content_base64)
data, error_rows = read_excel(file_content, show_debug)
if data.empty:
render_error("Načtená data jsou prázdná.")
else:
program_descriptions, program_colors = get_program_types(form)
wb = create_timetable(data, title, detail, program_descriptions, program_colors)
os.makedirs(TMP_DIR, exist_ok=True)
filename = f"{title}.xlsx"
safe_name = "".join(ch if ch.isalnum() or ch in "._- " else "_" for ch in filename)
file_path = os.path.join(TMP_DIR, safe_name)
wb.save(file_path)
print(f'''
Scenar Creator - Výsledek