import tempfile
from pathlib import Path
import re
from types import FunctionType
import docker

import debug as debugMod
import conversation_store
from config import Config


class UserEnvironment:
	def __init__(self, user_id: str):
		self.user_id = user_id
		self.client = docker.from_env()
		self.temp_dir = tempfile.TemporaryDirectory(prefix=f"{user_id}_code_")

	def execute_code(self, code: str, context=None, timeout=15, memory_limit=100):
		# Validate input
		if len(code) > Config.MAX_CODE_LENGTH:
			return {"err": "Code exceeds length limit"}

		# Create temp file
		tmp_path = Path(self.temp_dir.name) / "script.py"
		with open(tmp_path, "w") as f:
			if context:
				f.write(f"context = {repr(context)}\n")
			f.write(code)

		container = None

		try:
			# Execute in container
			container = self.client.containers.run(
				image="code-sandbox",
				command=[],
				volumes={
					str(tmp_path): {'bind': '/sandbox/script.py', 'mode': 'ro'}
				},
				mem_limit=f"{memory_limit}m",
				cpu_period=100000,
				cpu_quota=50000,  # Limit to 50% CPU
				network_mode='none',
				user='sandboxuser',
				read_only=True,
				security_opt=['no-new-privileges'],
				cap_drop=['ALL'],
				detach=True,
				stdout=True,
				stderr=True,
				timeout=timeout
			)

			# Wait for completion
			result = container.wait(timeout=timeout + 5)
			logs = container.logs().decode()

			# Parse results
			output = logs[:Config.OUTPUT_CHAR_LIMIT]
			error = None

			if result['StatusCode'] != 0:
				error = f"Container exited with code {result['StatusCode']}"

			return {
				"output": output,
				"error": error,
				"status": result['StatusCode']
			}

		except docker.errors.ContainerError as e:
			return {"err": f"Container error: {str(e)}"}
		except docker.errors.DockerException as e:
			return {"err": f"Docker error: {str(e)}"}
		except Exception as e:
			return {"err": f"Execution failed: {str(e)}"}
		finally:
			tmp_path.unlink(missing_ok=True)
			if container:
				try:
					container.remove(force=True)
				except docker.errors.NotFound:
					pass

	def cleanup(self):
		self.temp_dir.cleanup()


def orchestrate_code(orchestrate: FunctionType, vector_store, chunks, user_env: UserEnvironment, code_blocks, query, response, links):
	debugMod.log("\nExecuting code...\n")

	for code in code_blocks:
		retry_count = 0
		current_code = code.strip()
		last_error = None

		while retry_count < Config.MAX_CODE_RETRIES:
			execution_result = user_env.execute_code(
				current_code, context=chunks if chunks else None)

			if isinstance(execution_result, dict) and 'err' in execution_result:
				# hard code to let user know the program didn't explode
				debugMod.log(
					"\n\nhmmm...looks like this code didn't work properly, I'll try debugging it now!\n")

				last_error = execution_result['err']
				debugMod.log(f"\nExecution error: {last_error}\n")

				# Generate fix prompt using full orchestration
				fix_prompt = f"""Fix this Python code. Error: {last_error}
						Code:
						```python
						{current_code}
						```
						Requirements:
						1. Preserve original functionality
						2. Explain fixes in comments
						3. Return ONLY corrected code in a single Python block"""

				[fixed_response, _] = orchestrate(fix_prompt, vector_store)
				new_blocks = re.findall(
					Config.code_block_regex(), fixed_response, re.DOTALL)

				if new_blocks:
					current_code = new_blocks[0].strip()
					retry_count += 1
					debugMod.log(f"\nRetry #{retry_count} with modified code\n")
				else:
					break
			else:
				debugMod.log("\nCode Execution Result:\n", execution_result)
				if execution_result:
					# Get current conversation ID after saving conversation
					conv_id = conversation_store.save_conversation(query, response, links)

					# Save code execution with context
					conversation_store.save_code_execution(
						code=current_code,
						result=execution_result,
						error=execution_result.get('err') if isinstance(
							execution_result, dict) else None,
						retries=retry_count,
						conversation_id=conv_id
					)
				break

		if last_error and retry_count >= Config.MAX_CODE_RETRIES:
			debugMod.log(
				f"\nFailed to fix after {Config.MAX_CODE_RETRIES} attempts. Final error: {last_error}\n")
			# Request human intervention via orchestration
			help_response = orchestrate(
				f"Explain this code error to user: {last_error}",
				vector_store
			)[0]
			debugMod.log(help_response + "\n")