print("DEBUG: app.py script execution starting...")

import os
import asyncio
import json
import logging
import sys # For stdout logging and sys.exit

# --- Detailed Logging Setup ---
print("DEBUG: Setting up logging...")
logging.basicConfig(
    level=logging.DEBUG, # Capture all DEBUG, INFO, WARNING, ERROR, CRITICAL
    format='%(asctime)s - %(name)s - %(levelname)s - %(module)s:%(lineno)d - %(message)s',
    stream=sys.stdout, # Ensure logs go to standard output for Hugging Face
    force=True # In case logging was already configured by another lib (unlikely here)
)
logger = logging.getLogger(__name__) # Get a logger for this module
logging.getLogger('telethon').setLevel(logging.DEBUG) # Max verbosity for Telethon
print("DEBUG: Logging setup complete.")

logger.debug("DEBUG: Importing Telethon...")
from telethon import TelegramClient, events # type: ignore
import telethon # For version checking
from telethon.tl import types # For DocumentAttributeFilename
logger.info(f"DEBUG: Using Telethon version: {telethon.__version__}") # Log the version
logger.debug("DEBUG: Telethon imported.")

logger.debug("DEBUG: Importing Pillow...")
from PIL import Image, ImageDraw, ImageFont
logger.debug("DEBUG: Pillow imported.")


# --- Configuration Loading and Environment Variable Check ---
logger.info("DEBUG: Loading environment variables...")
try:
    logger.debug("DEBUG: Attempting to import dotenv...")
    from dotenv import load_dotenv
    logger.debug("DEBUG: dotenv imported. Attempting to load .env file...")
    if load_dotenv():
        logger.info("DEBUG: .env file loaded successfully.")
    else:
        logger.info("DEBUG: No .env file found or it's empty, relying on pre-set environment variables.")
except ImportError:
    logger.info("DEBUG: python-dotenv not installed, relying on pre-set environment variables.")
except Exception as e:
    logger.error(f"DEBUG: Error loading .env using dotenv: {e}")


API_ID = os.environ.get('API_ID')
API_HASH = os.environ.get('API_HASH')
BOT_TOKEN = os.environ.get('BOT_TOKEN')

logger.info(f"DEBUG: API_ID loaded: {'Set' if API_ID else 'NOT SET'}")
logger.info(f"DEBUG: API_HASH loaded: {'Set' if API_HASH else 'NOT SET'}")
logger.info(f"DEBUG: BOT_TOKEN loaded: {'Set' if BOT_TOKEN else 'NOT SET'}")

if not all([API_ID, API_HASH, BOT_TOKEN]):
    logger.critical("CRITICAL ERROR: API_ID, API_HASH, and BOT_TOKEN environment variables must be set in Hugging Face Secrets.")
    logger.critical("Bot cannot start. Please set these secrets in your Space settings.")
    sys.exit(1) # Exit script if critical env vars are missing

try:
    API_ID = int(API_ID)
    logger.info(f"DEBUG: API_ID successfully converted to int: {str(API_ID)[:4]}... (masked for log)")
except ValueError:
    logger.critical(f"CRITICAL ERROR: API_ID ('{os.environ.get('API_ID')}') must be an integer.")
    sys.exit(1)

# --- Session Name (CHANGE THIS OFTEN FOR DEBUGGING CONNECTION HANGS) ---
SESSION_VERSION = "v4_fresh_20250513_0130" # <<<<<<< CHANGE THIS TO A NEW UNIQUE STRING
SESSION_NAME = f'session/image_bot_session_{SESSION_VERSION}'
logger.info(f"DEBUG: Using session name: {SESSION_NAME}")

logger.debug("DEBUG: Initializing TelegramClient (bot variable)...")
try:
    bot = TelegramClient(SESSION_NAME, API_ID, API_HASH)
    logger.info(f"DEBUG: TelegramClient initialized successfully with session '{SESSION_NAME}'.")
except Exception as e:
    logger.critical(f"CRITICAL ERROR: Failed to initialize TelegramClient: {e}", exc_info=True)
    sys.exit(1)


# --- Paths and Directory Setup ---
logger.info("DEBUG: Defining paths and ensuring directories...")
DATA_DIR = "data"
DOWNLOADS_DIR = "downloads"
SESSION_DIR = "session"

CONFIG_FILENAME = "config.json"
TEMPLATE_FILENAME = "user_template.png"
USER_FONT_FILENAME = "user_font.ttf"

CONFIG_PATH = os.path.join(DATA_DIR, CONFIG_FILENAME)
TEMPLATE_PATH = os.path.join(DATA_DIR, TEMPLATE_FILENAME)
USER_FONT_PATH = os.path.join(DATA_DIR, USER_FONT_FILENAME)

for dir_path in [DATA_DIR, DOWNLOADS_DIR, SESSION_DIR]:
    logger.debug(f"DEBUG: Ensuring directory exists: {dir_path}")
    try:
        os.makedirs(dir_path, exist_ok=True)
        logger.info(f"DEBUG: Directory '{dir_path}' ensured (created if didn't exist).")
        if not os.access(dir_path, os.W_OK):
             logger.warning(f"DEBUG: Directory '{dir_path}' might not be writable despite creation (check Dockerfile chmod and persistent storage mount options)!")
    except Exception as e:
        logger.error(f"DEBUG: Error ensuring directory '{dir_path}': {e}", exc_info=True)
logger.info("DEBUG: Paths defined and directories ensured.")


# --- Default Configuration ---
DEFAULT_CONFIG = {
    "raw_image_box": {"x": 40, "y": 40, "width": 1000, "height": 780},
    "caption_area": {"x": 60, "y": 870},
    "caption_font_size": 45,
    "caption_color": "white",
    "line_spacing": 10
}
bot_config = {}
logger.debug(f"DEBUG: Default config defined: {DEFAULT_CONFIG}")

# --- Config Management ---
def load_bot_config():
    global bot_config
    logger.info(f"DEBUG: Attempting to load bot configuration from {CONFIG_PATH}...")
    try:
        if os.path.exists(CONFIG_PATH):
            with open(CONFIG_PATH, 'r') as f:
                loaded_values = json.load(f)
            logger.info(f"DEBUG: Successfully read from {CONFIG_PATH}.")
            bot_config = DEFAULT_CONFIG.copy()
            bot_config.update(loaded_values)
            logger.info("DEBUG: Merged loaded config with defaults.")
        else:
            logger.info(f"DEBUG: Config file {CONFIG_PATH} not found. Using defaults.")
            bot_config = DEFAULT_CONFIG.copy()
        save_bot_config(initial_load=True) # Ensure file exists with all keys
        logger.info(f"DEBUG: Final configuration after load/init: {bot_config}")
    except json.JSONDecodeError as e:
        logger.error(f"DEBUG: Error decoding JSON from {CONFIG_PATH}. Using defaults and overwriting. Error: {e}", exc_info=True)
        bot_config = DEFAULT_CONFIG.copy()
        save_bot_config(initial_load=True)
    except Exception as e:
        logger.error(f"DEBUG: Critical error loading config, using defaults: {e}", exc_info=True)
        bot_config = DEFAULT_CONFIG.copy()
        if not os.path.exists(CONFIG_PATH):
            save_bot_config(initial_load=True)


def save_bot_config(initial_load=False):
    global bot_config
    if not initial_load:
        logger.info(f"DEBUG: Attempting to save bot configuration to {CONFIG_PATH}...")
    try:
        with open(CONFIG_PATH, 'w') as f:
            json.dump(bot_config, f, indent=4)
        # Avoid logging full config on every save during initial_load to reduce noise
        if not initial_load:
            logger.info(f"DEBUG: Configuration saved successfully.")
    except Exception as e:
        logger.error(f"DEBUG: Error saving config to {CONFIG_PATH}: {e}", exc_info=True)

# --- User State Management ---
user_sessions = {}
logger.debug("DEBUG: User sessions initialized as empty dict.")

# --- Helper Functions (Image Processing) ---
async def generate_image_with_frame(raw_image_path, frame_template_path, caption_text, chat_id):
    logger.info(f"DEBUG: [ChatID: {chat_id}] Starting image generation. Raw: '{raw_image_path}', Template: '{frame_template_path}', Caption: '{caption_text[:30]}...'")
    output_filename = f"final_image_{chat_id}_{SESSION_VERSION}.png"
    output_path = os.path.join(DOWNLOADS_DIR, output_filename)
    logger.debug(f"DEBUG: [ChatID: {chat_id}] Output path will be: {output_path}")

    cfg_raw_box = bot_config.get("raw_image_box", DEFAULT_CONFIG["raw_image_box"])
    cfg_caption_area = bot_config.get("caption_area", DEFAULT_CONFIG["caption_area"])
    cfg_font_size = bot_config.get("caption_font_size", DEFAULT_CONFIG["caption_font_size"])
    cfg_caption_color = bot_config.get("caption_color", DEFAULT_CONFIG["caption_color"])
    cfg_line_spacing = bot_config.get("line_spacing", DEFAULT_CONFIG["line_spacing"])
    logger.debug(f"DEBUG: [ChatID: {chat_id}] Using image processing config: raw_box={cfg_raw_box}, caption_area={cfg_caption_area}, font_size={cfg_font_size}")

    try:
        logger.debug(f"DEBUG: [ChatID: {chat_id}] Opening raw image: {raw_image_path}")
        raw_img = Image.open(raw_image_path).convert("RGBA")
        logger.debug(f"DEBUG: [ChatID: {chat_id}] Opening frame template image: {frame_template_path}")
        frame_template_img = Image.open(frame_template_path).convert("RGBA")

        raw_img_copy = raw_img.copy()
        logger.debug(f"DEBUG: [ChatID: {chat_id}] Resizing raw image to fit box: {cfg_raw_box['width']}x{cfg_raw_box['height']}")
        raw_img_copy.thumbnail((cfg_raw_box['width'], cfg_raw_box['height']), Image.LANCZOS)

        final_img = frame_template_img.copy()
        paste_x = cfg_raw_box['x'] + (cfg_raw_box['width'] - raw_img_copy.width) // 2
        paste_y = cfg_raw_box['y'] + (cfg_raw_box['height'] - raw_img_copy.height) // 2
        logger.debug(f"DEBUG: [ChatID: {chat_id}] Pasting raw image at ({paste_x}, {paste_y}) on template.")
        final_img.paste(raw_img_copy, (paste_x, paste_y), raw_img_copy if raw_img_copy.mode == 'RGBA' else None)

        draw = ImageDraw.Draw(final_img)
        font_to_use = None
        logger.debug(f"DEBUG: [ChatID: {chat_id}] Attempting to load user font: {USER_FONT_PATH} with size {cfg_font_size}")
        if os.path.exists(USER_FONT_PATH):
            try:
                font_to_use = ImageFont.truetype(USER_FONT_PATH, cfg_font_size)
                logger.info(f"DEBUG: [ChatID: {chat_id}] User font loaded successfully.")
            except IOError as e:
                logger.warning(f"DEBUG: [ChatID: {chat_id}] User font at '{USER_FONT_PATH}' found but couldn't be loaded: {e}. Using fallback.")
        if not font_to_use:
            try:
                logger.debug(f"DEBUG: [ChatID: {chat_id}] Attempting to load 'arial.ttf' as fallback.")
                font_to_use = ImageFont.truetype("arial.ttf", cfg_font_size) # Common system font
                logger.info(f"DEBUG: [ChatID: {chat_id}] Fallback font 'arial.ttf' loaded.")
            except IOError:
                logger.warning(f"DEBUG: [ChatID: {chat_id}] Arial.ttf not found, using Pillow's load_default(). This may look very basic.")
                font_to_use = ImageFont.load_default().font_variant(size=cfg_font_size)


        logger.debug(f"DEBUG: [ChatID: {chat_id}] Drawing caption text...")
        lines = caption_text.split('\n')
        current_y = cfg_caption_area['y']
        for i, line in enumerate(lines):
            try:
                line_bbox = draw.textbbox((0, 0), line, font=font_to_use)
                line_height = line_bbox[3] - line_bbox[1]
            except AttributeError:
                (text_width, text_height) = draw.textsize(line, font=font_to_use)
                line_height = text_height
            logger.debug(f"DEBUG: [ChatID: {chat_id}] Drawing line {i+1}/{len(lines)}: '{line[:20]}...' at y={current_y}, height={line_height}")
            draw.text((cfg_caption_area['x'], current_y), line, font=font_to_use, fill=cfg_caption_color)
            current_y += line_height + cfg_line_spacing

        logger.info(f"DEBUG: [ChatID: {chat_id}] Saving final image to {output_path}")
        final_img.convert("RGB").save(output_path, "PNG")
        logger.info(f"DEBUG: [ChatID: {chat_id}] Image generation complete: {output_path}")
        return output_path

    except FileNotFoundError as fnf_err:
        logger.error(f"DEBUG: [ChatID: {chat_id}] File not found during image processing. Template: {frame_template_path}, Raw: {raw_image_path}. Error: {fnf_err}", exc_info=True)
        return None
    except Exception as e:
        logger.error(f"DEBUG: [ChatID: {chat_id}] Critical error during image processing: {e}", exc_info=True)
        return None

# --- Bot Event Handlers ---
@bot.on(events.NewMessage(pattern='/start'))
async def start_handler(event):
    chat_id = event.chat_id
    logger.info(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Received /start command.")
    user_sessions[chat_id] = {'state': 'idle', 'data': {}}
    start_message = (
        "Welcome! This bot helps you create images with a template.\n\n"
        "**Initial Setup (if first time or after a reset):**\n"
        "1. `/settemplate` - Upload your frame template image (PNG/JPG).\n"
        "2. `/setfont` - Upload your .ttf font file for captions.\n"
        "3. `/help_config` - Learn how to set layout parameters.\n"
        "4. `/setconfig <key> <value>` - Adjust layout as needed.\n\n"
        "**Regular Use:**\n"
        "`/create` - Start creating a new image.\n"
        "`/viewconfig` - See current layout settings.\n"
        "`/cancel` - Cancel current operation.\n\n"
        f"**DEBUG INFO:** Session Suffix: `{SESSION_VERSION}`\n"
        "**Note on Hosting:** The `data/` and `session/` directories should ideally use persistent storage on your hosting platform. "
        "If using ephemeral storage (common on free tiers), your uploaded template, font, config, and session might be lost on restarts, requiring setup again."
    )
    await event.reply(start_message)
    logger.info(f"DEBUG: [ChatID: {chat_id}] Sent welcome message for /start.")


@bot.on(events.NewMessage(pattern='/settemplate'))
async def set_template_handler(event):
    chat_id = event.chat_id
    logger.info(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Received /settemplate command.")
    user_sessions[chat_id] = {'state': 'awaiting_template_image', 'data': {}}
    await event.reply("Please send your frame template image (e.g., a PNG or JPG).")

@bot.on(events.NewMessage(pattern='/setfont'))
async def set_font_handler(event):
    chat_id = event.chat_id
    logger.info(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Received /setfont command.")
    user_sessions[chat_id] = {'state': 'awaiting_font_file', 'data': {}}
    await event.reply("Please send your `.ttf` font file as a document/file.")

@bot.on(events.NewMessage(pattern='/viewconfig'))
async def view_config_handler(event):
    chat_id = event.chat_id
    logger.info(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Received /viewconfig command.")
    load_bot_config() # Ensure config is fresh
    config_str = "Current Bot Configuration:\n"
    config_str += f"- Font: {'User font set (' + USER_FONT_FILENAME + ')' if os.path.exists(USER_FONT_PATH) else 'Using fallback font (Arial or Pillow default)'}\n"
    for key, value in bot_config.items():
        config_str += f"- {key}: {json.dumps(value)}\n"
    await event.reply(config_str)

@bot.on(events.NewMessage(pattern='/help_config'))
async def help_config_handler(event):
    chat_id = event.chat_id
    logger.info(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Received /help_config command.")
    await event.reply(
        "**Configuration Commands (`/setconfig <key> <value>`):**\n"
        "`raw_image_box_x <num>` (e.g., 40)\n"
        "`raw_image_box_y <num>`\n"
        "`raw_image_box_width <num>`\n"
        "`raw_image_box_height <num>`\n"
        "`caption_area_x <num>`\n"
        "`caption_area_y <num>`\n"
        "`caption_font_size <num>` (e.g., 45)\n"
        "`caption_color <name_or_hex>` (e.g., white or #FFFFFF)\n"
        "`line_spacing <num>` (e.g., 10)\n\n"
        "Example: `/setconfig caption_font_size 50`\n"
        "Use `/viewconfig` to see current values. "
        "These settings define how the raw image and caption are placed on your template."
    )

@bot.on(events.NewMessage(pattern=r'/setconfig (\w+) (.+)'))
async def set_config_handler(event):
    chat_id = event.chat_id
    key_to_set = event.pattern_match.group(1).strip()
    value_str = event.pattern_match.group(2).strip()
    logger.info(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Received /setconfig command. Key: '{key_to_set}', Value: '{value_str}'")
    
    load_bot_config()
    original_config_copy = json.dumps(bot_config)
    updated = False
    sub_key = None # Initialize to avoid UnboundLocalError if key doesn't match known patterns

    try:
        if key_to_set.startswith("raw_image_box_"):
            sub_key = key_to_set.replace("raw_image_box_", "")
            if "raw_image_box" in bot_config and sub_key in bot_config["raw_image_box"]:
                bot_config["raw_image_box"][sub_key] = int(value_str)
                updated = True
        elif key_to_set.startswith("caption_area_"):
            sub_key = key_to_set.replace("caption_area_", "")
            if "caption_area" in bot_config and sub_key in bot_config["caption_area"]:
                bot_config["caption_area"][sub_key] = int(value_str)
                updated = True
        elif key_to_set in ["caption_font_size", "line_spacing"]:
            bot_config[key_to_set] = int(value_str)
            updated = True
        elif key_to_set == "caption_color":
            bot_config[key_to_set] = value_str
            updated = True
        
        if updated:
            if json.dumps(bot_config) != original_config_copy:
                 save_bot_config()
                 reply_value = value_str
                 if sub_key:
                     if key_to_set.startswith("raw_image_box_"):
                         reply_value = bot_config.get("raw_image_box", {}).get(sub_key, value_str)
                     elif key_to_set.startswith("caption_area_"):
                         reply_value = bot_config.get("caption_area", {}).get(sub_key, value_str)
                 else:
                     reply_value = bot_config.get(key_to_set, value_str)
                 await event.reply(f"Configuration updated: {key_to_set} = {reply_value}")
                 logger.info(f"DEBUG: [ChatID: {chat_id}] Config '{key_to_set}' updated to '{reply_value}'.")
            else:
                 await event.reply(f"Value for {key_to_set} is already {value_str}. No change made.")
                 logger.info(f"DEBUG: [ChatID: {chat_id}] Config '{key_to_set}' already '{value_str}'. No change.")
        else:
            await event.reply(f"Unknown or non-configurable key: '{key_to_set}'. See `/help_config`.")
            logger.warning(f"DEBUG: [ChatID: {chat_id}] Unknown config key attempted: '{key_to_set}'.")
    except ValueError:
        await event.reply(f"Invalid value for '{key_to_set}'. Please provide a number where expected.")
        logger.warning(f"DEBUG: [ChatID: {chat_id}] Invalid value for config key '{key_to_set}': '{value_str}'.")
    except Exception as e:
        await event.reply(f"Error setting config: {e}")
        logger.error(f"DEBUG: [ChatID: {chat_id}] Error setting config '{key_to_set}': {e}", exc_info=True)


@bot.on(events.NewMessage(pattern='/create'))
async def create_post_handler(event):
    chat_id = event.chat_id
    logger.info(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Received /create command.")
    if not os.path.exists(TEMPLATE_PATH):
        logger.warning(f"DEBUG: [ChatID: {chat_id}] /create failed: Template not found at {TEMPLATE_PATH}.")
        await event.reply("No template found. Please set one using `/settemplate` first.")
        return
    if not os.path.exists(USER_FONT_PATH):
        logger.warning(f"DEBUG: [ChatID: {chat_id}] /create warning: User font not found at {USER_FONT_PATH}. Fallback will be used.")
        await event.reply("Warning: No user font found (use `/setfont`). A fallback font will be attempted, but results may vary.")

    user_sessions[chat_id] = {'state': 'awaiting_raw_image_for_create', 'data': {}}
    await event.reply("Please send the raw image you want to use.")
    logger.debug(f"DEBUG: [ChatID: {chat_id}] State set to 'awaiting_raw_image_for_create'.")


@bot.on(events.NewMessage(pattern='/cancel'))
async def cancel_handler(event):
    chat_id = event.chat_id
    logger.info(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Received /cancel command.")
    if chat_id in user_sessions and user_sessions[chat_id]['state'] != 'idle':
        temp_raw_path = user_sessions[chat_id].get('data', {}).get('raw_image_path')
        if temp_raw_path and os.path.exists(temp_raw_path):
            try:
                os.remove(temp_raw_path)
                logger.info(f"DEBUG: [ChatID: {chat_id}] Deleted temp raw image: {temp_raw_path}")
            except OSError as e:
                logger.error(f"DEBUG: [ChatID: {chat_id}] Error deleting temp file {temp_raw_path}: {e}")
        user_sessions[chat_id] = {'state': 'idle', 'data': {}}
        await event.reply("Operation cancelled.")
        logger.info(f"DEBUG: [ChatID: {chat_id}] Operation cancelled, state reset to 'idle'.")
    else:
        await event.reply("Nothing to cancel.")
        logger.info(f"DEBUG: [ChatID: {chat_id}] /cancel received but nothing to cancel.")

@bot.on(events.NewMessage)
async def message_handler(event): # pylint: disable=too-many-branches, too-many-statements
    chat_id = event.chat_id
    if chat_id not in user_sessions:
        user_sessions[chat_id] = {'state': 'idle', 'data': {}}

    if event.text and event.text.startswith(('/', '#', '.')):
        logger.debug(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Message ('{event.text[:20]}...') looks like a command, letting patterned handlers manage it.")
        return

    current_state = user_sessions.get(chat_id, {}).get('state', 'idle')
    session_data = user_sessions.get(chat_id, {}).get('data', {})
    logger.debug(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Message received. Current state: '{current_state}'. Message text (first 30 chars): '{str(event.raw_text)[:30]}...' Is photo: {event.photo is not None}. Is document: {event.document is not None}.")

    if event.document and current_state == 'awaiting_font_file':
        logger.info(f"DEBUG: [ChatID: {chat_id}] Document received in 'awaiting_font_file' state.")
        doc_attrs = event.document.attributes
        filename = "unknown_document"
        for attr in doc_attrs:
            if isinstance(attr, types.DocumentAttributeFilename):
                filename = attr.file_name
                break
        logger.debug(f"DEBUG: [ChatID: {chat_id}] Document filename: '{filename}', MIME type: '{event.document.mime_type}'")
        is_ttf = False
        if filename.lower().endswith('.ttf'):
            is_ttf = True
        elif hasattr(event.document, 'mime_type') and \
           ('font' in event.document.mime_type or 'ttf' in event.document.mime_type or 'opentype' in event.document.mime_type):
            is_ttf = True
        if is_ttf:
            await event.reply("Downloading font file...")
            logger.info(f"DEBUG: [ChatID: {chat_id}] Downloading TTF font: {filename}")
            try:
                await bot.download_media(event.message.document, USER_FONT_PATH)
                user_sessions[chat_id]['state'] = 'idle'
                await event.reply(f"Font saved as '{USER_FONT_FILENAME}' in `data/` directory!")
                logger.info(f"DEBUG: [ChatID: {chat_id}] Font saved successfully. State set to 'idle'.")
            except Exception as e:
                await event.reply(f"Sorry, I couldn't save the font. Error: {e}")
                logger.error(f"DEBUG: [ChatID: {chat_id}] Error saving font: {e}", exc_info=True)
                user_sessions[chat_id]['state'] = 'idle'
        else:
            await event.reply("That doesn't look like a .ttf font file. Please send a valid .ttf font file, or use /cancel.")
            logger.warning(f"DEBUG: [ChatID: {chat_id}] Received document is not a TTF: {filename}")
        return

    if event.photo:
        logger.info(f"DEBUG: [ChatID: {chat_id}] Photo received in state '{current_state}'.")
        if current_state == 'awaiting_template_image':
            await event.reply("Downloading template image...")
            logger.info(f"DEBUG: [ChatID: {chat_id}] Downloading template image.")
            try:
                await bot.download_media(event.message.photo, TEMPLATE_PATH)
                user_sessions[chat_id]['state'] = 'idle'
                await event.reply(f"Template saved as '{TEMPLATE_FILENAME}' in `data/` directory!")
                logger.info(f"DEBUG: [ChatID: {chat_id}] Template saved. State set to 'idle'.")
            except Exception as e:
                await event.reply(f"Couldn't save template image. Error: {e}")
                logger.error(f"DEBUG: [ChatID: {chat_id}] Error saving template: {e}", exc_info=True)
                user_sessions[chat_id]['state'] = 'idle'
            return
        elif current_state == 'awaiting_raw_image_for_create':
            raw_img_filename = f"raw_{chat_id}_{event.message.id}_{SESSION_VERSION}.jpg"
            raw_img_temp_path = os.path.join(DOWNLOADS_DIR, raw_img_filename)
            await event.reply("Downloading raw image...")
            logger.info(f"DEBUG: [ChatID: {chat_id}] Downloading raw image to {raw_img_temp_path}.")
            try:
                await bot.download_media(event.message.photo, raw_img_temp_path)
                session_data['raw_image_path'] = raw_img_temp_path
                user_sessions[chat_id]['state'] = 'awaiting_caption_for_create'
                await event.reply("Raw image received. Now, please send the caption text.")
                logger.info(f"DEBUG: [ChatID: {chat_id}] Raw image saved. State set to 'awaiting_caption_for_create'.")
            except Exception as e:
                await event.reply(f"Couldn't save raw image. Error: {e}")
                logger.error(f"DEBUG: [ChatID: {chat_id}] Error saving raw image: {e}", exc_info=True)
                user_sessions[chat_id]['state'] = 'idle'
            return

    if event.text and not event.text.startswith('/') and current_state == 'awaiting_caption_for_create':
        caption_text = event.text
        raw_image_path = session_data.get('raw_image_path')
        logger.info(f"DEBUG: [ChatID: {chat_id}] Caption text received: '{caption_text[:30]}...'. Raw image path: {raw_image_path}")
        if not raw_image_path or not os.path.exists(raw_image_path):
            logger.error(f"DEBUG: [ChatID: {chat_id}] Raw image path not found or file missing: {raw_image_path}. State reset.")
            await event.reply("Error: Raw image data not found. Try `/create` again.")
            user_sessions[chat_id]['state'] = 'idle'
            return
        processing_msg = await event.reply("⏳ Processing your image, please wait...")
        logger.info(f"DEBUG: [ChatID: {chat_id}] Starting image processing with caption.")
        final_image_path = await generate_image_with_frame(raw_image_path, TEMPLATE_PATH, caption_text, chat_id)
        try:
            logger.debug(f"DEBUG: [ChatID: {chat_id}] Attempting to delete 'Processing...' message.")
            await bot.delete_messages(chat_id, processing_msg)
        except Exception as e: logger.warning(f"DEBUG: [ChatID: {chat_id}] Could not delete 'Processing...' message: {e}")
        if final_image_path and os.path.exists(final_image_path):
            logger.info(f"DEBUG: [ChatID: {chat_id}] Final image created: {final_image_path}. Sending to user.")
            try:
                await bot.send_file(chat_id, final_image_path, caption="🖼️ Here's your generated image!")
                logger.info(f"DEBUG: [ChatID: {chat_id}] Final image sent successfully.")
            except Exception as e:
                await event.reply(f"Sorry, couldn't send the final image. Error: {e}")
                logger.error(f"DEBUG: [ChatID: {chat_id}] Error sending final image: {e}", exc_info=True)
            finally:
                if os.path.exists(final_image_path):
                    logger.debug(f"DEBUG: [ChatID: {chat_id}] Deleting final image from server: {final_image_path}")
                    os.remove(final_image_path)
        else:
            await event.reply("❌ Sorry, something went wrong while creating the image.")
            logger.error(f"DEBUG: [ChatID: {chat_id}] Image generation failed or final_image_path is invalid.")
        if os.path.exists(raw_image_path):
            logger.debug(f"DEBUG: [ChatID: {chat_id}] Deleting temporary raw image: {raw_image_path}")
            os.remove(raw_image_path)
        user_sessions[chat_id]['state'] = 'idle'
        user_sessions[chat_id]['data'] = {}
        logger.info(f"DEBUG: [ChatID: {chat_id}] Post creation process complete. State set to 'idle'.")
        return
    
    if current_state != 'idle':
         logger.debug(f"DEBUG: [ChatID: {chat_id}, User: {event.sender_id}] Unhandled message in state '{current_state}'. Text: '{str(event.raw_text)[:30]}...'")
         # Avoid replying to every single message if it's not a command and not in a specific waiting state
         # This can be noisy. Only reply if a specific input was expected.
         # if current_state not in ['awaiting_template_image', 'awaiting_font_file', 'awaiting_raw_image_for_create', 'awaiting_caption_for_create']:
         #    pass # Do nothing for other states if non-command text
         # else: # If in a specific waiting state, then the message was unexpected.
         #    await event.reply(f"I'm currently waiting for: `{current_state}`. If you're stuck, try `/cancel`.")


# --- Main Bot Execution ---
async def main():
    logger.info("===== Bot main() function starting =====")
    load_bot_config()

    logger.info("DEBUG: Performing a simple network test to google.com...")
    try:
        import socket
        host_to_test = "google.com"; port_to_test = 80
        socket.create_connection((host_to_test, port_to_test), timeout=10)
        logger.info(f"DEBUG: Network test to {host_to_test}:{port_to_test} was SUCCESSFUL.")
    except OSError as e:
        logger.warning(f"DEBUG: Network test to {host_to_test}:{port_to_test} FAILED - OSError: {e}. This might indicate broader network issues.")
    except Exception as ex:
        logger.warning(f"DEBUG: Network test to {host_to_test}:{port_to_test} FAILED with other exception: {ex}.")
    logger.info("DEBUG: Network test completed.")

    try:
        logger.info(f"DEBUG: Attempting to connect to Telegram with bot token...")
        logger.info(f"DEBUG: Using API_ID: {str(API_ID)[:4]}... (masked), Session: {SESSION_NAME}")
        
        await bot.start(bot_token=BOT_TOKEN)
        logger.info("SUCCESS: Bot connected to Telegram successfully!")
        
        me = await bot.get_me()
        logger.info(f"Bot User Info: Logged in as: @{me.username} (ID: {me.id})")
        
        logger.info("Bot is now running and listening for messages...")
        await bot.run_until_disconnected()

    except OSError as e:
        logger.critical(f"CRITICAL ERROR: OSError during bot.start() or connection phase: {e}. This often indicates network connectivity problems from the container to Telegram servers.", exc_info=True)
    except Exception as e:
        logger.critical(f"CRITICAL ERROR: An unhandled exception occurred while starting or running the bot: {e}", exc_info=True)
    finally:
        logger.info("===== Bot main() function ending (or ended due to error) =====")
        if bot.is_connected():
            logger.info("DEBUG: Bot is connected, attempting to disconnect...")
            try:
                await bot.disconnect()
                logger.info("DEBUG: Bot disconnected successfully.")
            except Exception as e:
                logger.error(f"DEBUG: Error during bot disconnect: {e}", exc_info=True)
        else:
            logger.info("DEBUG: Bot was not connected (or already disconnected).")
        logger.info("Bot has stopped.")

if __name__ == '__main__':
    logger.info("DEBUG: Script is being run directly (__name__ == '__main__').")
    print("DEBUG: Starting asyncio event loop...")
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        logger.info("DEBUG: Bot stopped by KeyboardInterrupt (Ctrl+C).")
    except Exception as e:
        logger.critical(f"DEBUG: Critical error running asyncio event loop: {e}", exc_info=True)
    finally:
        print("DEBUG: Asyncio event loop finished.")