import os
import re
import asyncio
import sys
import importlib.util
from pyrogram import Client, filters
from pyrogram.enums import ParseMode
import google.generativeai as genai

# check line 93 .. accordingly
# === CONFIG ===
API_ID = os.environ.get("API_ID")                 # Replace with your API ID
API_HASH = os.environ.get("API_HASH")   # Replace with your API HASH
BOT_TOKEN = os.environ.get("BOT_TOKEN")
GEMINI_API_KEY = os.environ.get("GEMINI_API_KEY")
if not BOT_TOKEN:
    raise RuntimeError("BOT_TOKEN environment variable not set!")
if not GEMINI_API_KEY:
    raise RuntimeError("GEMINI_API_KEY environment variable not set!")

# === SETUP ===
genai.configure(api_key=GEMINI_API_KEY)
model = genai.GenerativeModel("gemini-2.5-flash")
bot = Client("JarvisBot", api_id=API_ID, api_hash=API_HASH, bot_token=BOT_TOKEN)
os.makedirs("modules", exist_ok=True)

# === MODULE LOADER ===
def load_modules(folder="modules"):
    for file in os.listdir(folder):
        if file.endswith(".py"):
            path = os.path.join(folder, file)
            name = file[:-3]
            spec = importlib.util.spec_from_file_location(name, path)
            mod = importlib.util.module_from_spec(spec)
            spec.loader.exec_module(mod)

load_modules()

# === HELPERS ===
def extract_module_name(code: str) -> str:
    match = re.search(r"def\\s+([a-zA-Z_][a-zA-Z0-9_]*)", code)
    return match.group(1).lower() if match else f"mod_{os.urandom(2).hex()}"

def extract_commands(code: str) -> list:
    return re.findall(r'filters\\.command\\(["\'](\\w+)["\']', code)

def determine_intent(text: str) -> str:
    lowered = text.lower()
    if any(x in lowered for x in ["create", "make", "build"]):
        return "CREATE"
    elif any(x in lowered for x in ["edit", "modify"]):
        return "EDIT"
    elif "recode" in lowered:
        return "RECODE"
    else:
        return "UNSURE"

def clean_code_blocks(code: str) -> str:
    if code.startswith("```python"):
        code = code[9:]
    if code.startswith("```"):
        code = code[3:]
    if code.endswith("```"):
        code = code[:-3]
    return code.strip()

def extract_module_name_from_description(description: str) -> str:
    # Try to extract the last noun/phrase as the module name
    # Remove common verbs and stopwords
    import re
    stopwords = [
        'jarvis', 'make', 'create', 'build', 'generate', 'a', 'an', 'the', 'please', 'module', 'for', 'me', 'to', 'with', 'add', 'new', 'of', 'system', 'bot', 'command', 'that', 'and', 'in', 'on', 'by', 'as', 'is', 'it', 'my', 'this', 'do', 'can', 'you', 'i', 'want', 'need', 'from', 'like', 'using', 'feature', 'function', 'implement', 'write', 'code', 'file', 'python', 'telegram', 'pyrogram', 'handler', 'example', 'mod', 'mod_'  # etc.
    ]
    # Remove punctuation
    desc = re.sub(r'[^a-zA-Z0-9_\s]', '', description.lower())
    # Remove stopwords
    words = [w for w in desc.split() if w not in stopwords]
    if not words:
        return f"mod_{os.urandom(2).hex()}"
    # Join remaining words with underscores
    name = '_'.join(words)
    # Remove leading/trailing underscores and collapse multiple underscores
    name = re.sub(r'_+', '_', name).strip('_')
    # Fallback if name is empty
    if not name:
        return f"mod_{os.urandom(2).hex()}"
    return name

async def restart_bot(chat_id):
    await bot.send_message(chat_id, "♻️ Restarting to apply new module...")
    await bot.stop()
    os.execl(sys.executable, sys.executable, *sys.argv)
    os._exit(0)  # Ensure process exits if execl fails

# === WORD TRIGGER ===
@bot.on_message(filters.private & filters.text)
async def jarvis_trigger(client, message):
    text = message.text.strip()
    if not text.lower().startswith("jarvis"):
        return

    description = text[6:].strip()
    if not description:
        return await message.reply("🤖 Hello, what would you like me to do?")

    intent = determine_intent(description)
    progress_msg = await message.reply(f"🤖 Acknowledged.\n🧠 Determining intent...\n📘 Intent: {intent}\n📝 Task: `{description}`", parse_mode=ParseMode.MARKDOWN)

    # --- NEW: Handle EDIT intent for existing files ---
    if intent == "EDIT":
        # Try to extract filename and edit instruction
        match = re.match(r"edit\s+([\w/\\.]+)\s+(.*)", description, re.IGNORECASE)
        if match:
            file_path = match.group(1)
            edit_instruction = match.group(2)
            if not os.path.exists(file_path):
                await progress_msg.edit(f"❌ File `{file_path}` not found.")
                return
            with open(file_path, "r", encoding="utf-8") as f:
                current_content = f.read()
            edit_prompt = (
                f"You are an expert Python developer. Here is the current content of `{file_path}`:\n"
                f"""\n{current_content}\n"""
                f"Please edit this file to: {edit_instruction}.\n"
                f"Output ONLY the new Python code, no explanations or markdown."
            )
            try:
                response = model.generate_content(edit_prompt)
                new_code = clean_code_blocks(response.text.strip())
                if not new_code or "def " not in new_code:
                    await progress_msg.edit(f"❌ Edit failed: No valid code returned.")
                    return
                with open(file_path, "w", encoding="utf-8") as f:
                    f.write(new_code)
                # Try to reload the module if it's in modules/
                if file_path.startswith("modules/") and file_path.endswith(".py"):
                    mod_name = os.path.basename(file_path)[:-3]
                    try:
                        spec = importlib.util.spec_from_file_location(mod_name, file_path)
                        mod = importlib.util.module_from_spec(spec)
                        mod.bot = bot
                        spec.loader.exec_module(mod)
                    except Exception as test_error:
                        await progress_msg.edit(f"⚠️ Edit applied, but module reload failed: {test_error}")
                        return
                await progress_msg.edit(f"✅ Edit applied to `{file_path}`. Restarting bot...")
                await asyncio.sleep(2)
                asyncio.create_task(restart_bot(message.chat.id))
                return
            except Exception as e:
                await progress_msg.edit(f"❌ Edit failed: `{str(e)[:100]}...`")
                return
        else:
            await progress_msg.edit("❗ Could not parse edit command. Use: 'edit <file> <instruction>'")
            return
    # --- END NEW ---

    success = False
    code = ""
    for attempt in range(1, 6):
        await progress_msg.edit(f"`Attempt {attempt}/5:` Thinking and generating code...\n- Executing prerequisite shell commands...")

        try:
            prompt = (
                f"Write a full Pyrogram Telegram bot module that implements:\n"
                f"{description}.\n\n"
                f"IMPORTANT RULES:\n"
                f"1. Use 'bot' variable (not 'Client') - it will be injected\n"
                f"2. Include commands using @bot.on_message(filters.command(...))\n"
                f"3. Import only what you need from pyrogram\n and use 'from ..t1 import bot'\n 'try: from ..t1 import bot except (ImportError, ValueError): \n from __main__ import bot' \n"
                f"4. Don't create a new Client instance\n"
                f"5. Make functions async when using bot methods\n\n"
                f"Output ONLY Python code, no explanations or markdown."
            )
            if attempt > 1:
                prompt += f"\n\nNote: Previous attempt failed with error: {str(e)}. Fix that issue this time."

            response = model.generate_content(prompt)
            code = clean_code_blocks(response.text.strip())

            if "def " not in code or "@bot" not in code:
                await progress_msg.edit(f"❌ Attempt {attempt}: Invalid function or handler.")
                continue

            # --- NEW: Use file path from description if present ---
            import re
            file_path_match = re.search(r"(modules/[\w\-]+\.py)", description)
            if file_path_match:
                mod_path = file_path_match.group(1)
                mod_name = os.path.basename(mod_path)[:-3]
            else:
                mod_name = extract_module_name_from_description(description)
                mod_path = f"modules/{mod_name}.py"
            # If file exists, use edit flow instead of creating a new file
            if os.path.exists(mod_path):
                with open(mod_path, "r", encoding="utf-8") as f:
                    current_content = f.read()
                edit_prompt = (
                    f"You are an expert Python developer. Here is the current content of `{mod_path}`:\n"
                    f"""\n{current_content}\n"""
                    f"Please update this file to: {description}.\n"
                    f"Output ONLY the new Python code, no explanations or markdown."
                )
                response = model.generate_content(edit_prompt)
                code = clean_code_blocks(response.text.strip())
            # --- END NEW ---

            with open(mod_path, "w", encoding="utf-8") as f:
                f.write(code)

            await progress_msg.edit(f"`Attempt {attempt}/5: Thinking and generating code...\n- Executing prerequisite shell commands...\n- Testing generated code...")

            try:
                spec = importlib.util.spec_from_file_location(mod_name, mod_path)
                mod = importlib.util.module_from_spec(spec)
                mod.bot = bot
                spec.loader.exec_module(mod)
            except Exception as test_error:
                raise RuntimeError(f"Testing error: {test_error}")

            await progress_msg.edit(f"`Attempt {attempt}/5:` Thinking and generating code...\n- Executing prerequisite shell commands...\n- Testing generated code...\n- Tests passed. Writing files...\n- Files written. Initiating restart...")
            await asyncio.sleep(2)
            asyncio.create_task(restart_bot(message.chat.id))
            success = True
            break

        except Exception as e:
            await progress_msg.edit(f"❌ Attempt {attempt} Error: `{str(e)[:100]}...`")

    if not success:
        await progress_msg.edit("❌ All 5 attempts failed. Please try again with a simpler instruction.")

# === /modules ===
@bot.on_message(filters.command("modules") & filters.private)
async def list_modules(client, message):
    modules = [f for f in os.listdir("modules") if f.endswith(".py")]
    if modules:
        module_list = "\n".join([f"• {m[:-3]}" for m in modules])
        await message.reply(f" Loaded Modules: \n{module_list}", parse_mode=ParseMode.MARKDOWN)
    else:
        await message.reply(" No modules found.", parse_mode=ParseMode.MARKDOWN)

# === /delete ===
@bot.on_message(filters.command("delete") & filters.private)
async def delete_module(client, message):
    if len(message.command) < 2:
        return await message.reply("❗ Specify module name.\n\nExample: `/delete calculator`", parse_mode=ParseMode.MARKDOWN)
    
    mod_name = message.command[1].lower()
    mod_path = f"modules/{mod_name}.py"
    
    if os.path.exists(mod_path):
        os.remove(mod_path)
        await message.reply(f"🗑 Deleted `{mod_name}.py`\n♻️ Restart required to take effect.", parse_mode=ParseMode.MARKDOWN)
    else:
        await message.reply(f"❌ Module `{mod_name}.py` not found.", parse_mode=ParseMode.MARKDOWN)

# === /what to do ===
@bot.on_message(filters.regex(r"(?i)what( can)? i do\??") & filters.private)
async def what_to_do(_, message):
    await message.reply(
        "🧠 Jarvis Assistant**\n\n"
        "I can generate custom bot modules for you!\n\n"
        "Commands:\n"
        "`jarvis make a calculator` - Natural language trigger\n"
        "`/modules` - List all modules\n"
        "`/delete <name>` - Delete a module\n\n"
        "**Examples:**\n"
        "`jarvis build a reminder system`\n"
        "`jarvis create a dice game`\n"
        "`jarvis weather checker`\n",
        parse_mode=ParseMode.MARKDOWN
    )

# === START ===
print("🚀 Starting Jarvis Bot...")
load_modules()
print("✅ Bot is ready!")
bot.run()