import json
import os
import re
import sys
import threading
import time
from pathlib import Path

import requests
import traceback
import requests
from google.api_core.exceptions import Forbidden
from google.cloud import storage
from lib.db import Archive, db
from PyQt5.QtCore import QThread
from requests.adapters import HTTPAdapter, Retry
from urllib3.exceptions import InsecureRequestWarning

from .component import Component
# Suppress insecure request warning
requests.packages.urllib3.disable_warnings(category=InsecureRequestWarning)
class ArchiveSynchronizer(Component):
    def __init__(self, config=None, name=None, period=1, lazy=True, paused=False, threaded=True):
        super().__init__(config=config, name=name, period=period, lazy=lazy, paused=paused, threaded=threaded)
        self.simulate = "--sim-archiver" in sys.argv
        #self.machine_status = "offline"


    def config_changed(self):
        self.machine_id = self.config.machine_id
        if "--dev-portal" in sys.argv:
            self.archive_endpoint = f"https://dev.r5portal.it/api/st-ten-save/"
            #self.url = f"https://dev.r5portal.it/media/uploads/warning_images/st-ten-10/st-ten-11.csv"
        else:
            self.archive_endpoint = self.config[self.name]["archive_endpoint"]
            #self.browse_folder_endpoint = self.config[self.name]["browse_folder_endpoint"]
        self._do_set_period({"period": float(self.config[self.name]["poll_time"])})
        self.hold_time = round(float(self.config[self.name]["hold_time"]) * 1000)
        self.gcs_client = storage.Client.from_service_account_json(self.config[self.name]["service_account_json"])
        self.gcs_client._http.mount("", HTTPAdapter(max_retries=Retry(total=0)))  # this seems to be useless
        self.gcs_client._http.adapters.move_to_end("", last=False)  # this seems to be useless
        self.bucket_id = self.config[self.name]["bucket_id"]
        self.gcs_bucket = None

    @db.connection_context()
    def _get(self):
        for record in list(Archive.select().where((Archive.archived != True) | (Archive.uploaded != True))):  # using "is not True" breaks the query..  # list() forces the complete execution of the query unlocking the db unlike __enter__()
            if not self.simulate:
                if record.archived is not True:
                    record.archived = self.remote_archive(record) is True
                if record.uploaded is not True:
                    record.uploaded = self.remote_store(record) is True
            else:
                self.log.info("simulated archive synchronizer cycle")
            record.save()
            if self.hold_time > 0:
                QThread.msleep(self.hold_time)
        self.gcs_bucket = None

        if "--dev-portal" in sys.argv:
            self.update_machine_status()
            self.remote_fetch(self.machine_status,self.machine_id)
        super()._get()

    def update_machine_status(self):
        self.status_endpoint = f"https://dev.r5portal.it/api/device-info-update?machine-id={self.machine_id.upper()}&status={self.machine_status}"

        status_dict = {"last_status": self.machine_status}

        response = None
        try:
            if not self.simulate:
                with requests.Session() as s:
                    s.mount("", HTTPAdapter(max_retries=Retry(total=0)))  # this disables retries
                    response = requests.post(self.status_endpoint, json=status_dict, timeout=5, verify=False)
                    if response.status_code != 200:
                        raise AssertionError("bad status response")
        except AssertionError as e:
            self.log.warning(
                f"Status: {self.machine_status}: failed to update machine status: {str(e)}: {response.status_code if response else 'no response'}: {response.content if response else 'no response'}"
            )
            return False
        except (requests.ConnectionError, requests.Timeout) as e:
            self.log.warning(
                f"Status: {self.machine_status}: failed to update machine status, archive_endpoint might be unreachable: {str(e)}"
            )
            return False
        except Exception:
            self.log.error(
                f"Status: {self.machine_status}: failed to update machine status:\n{traceback.format_exc()}:\n{response.status_code if response else 'no response'}: {response.content if response else 'no response'}"
            )
            return False

        self.log.info(f"Status: {self.machine_status}: Machine Status Updated Successfully")
        return True
    def remote_archive(self, record):
        r = None
        try:
            if not self.simulate:
                with requests.Session() as s:
                    s.mount("", HTTPAdapter(max_retries=Retry(total=0)))  # this disables retries
                    r = requests.post(self.archive_endpoint, params={
                        "data": json.dumps(record.test_data),
                        "machine_id": self.machine_id,
                        "overridden": record.overridden,
                        "recipe": record.test_data.get("recipe", {}).get("name", None),
                        "result": "OK" if record.result else "KO",
                        "serial": record.id,
                        "time": record.time.isoformat(),
                        "user": record.user.username,
                    }, timeout=5, verify=False)
                    if r.status_code != 200:
                        raise AssertionError("bad status response")
        except AssertionError as e:
            self.log.warning(f"id: {record.id}: failed to archive remotely: {str(e)}: {r.status_code}: {r.content}")
            return False
        except (requests.ConnectionError, requests.Timeout) as e:
            self.log.warning(f"id: {record.id}: failed to archive remotely, archive_endpoint might be unreachable: {str(e)}")
            return False
        return True

    def remote_store(self, record):
        if "vision" not in record.test_data:
            return True
        try:
            self.gcs_bucket = self.gcs_client.get_bucket(self.bucket_id, timeout=(5, 30), retry=None)  # retry=None seems to be ignored
        except Exception:
            self.log.warning(f"id {record.id}: failed to connect to bucket {repr(self.bucket_id)}:\n{traceback.format_exc()}")
            self.gcs_bucket = None
        if self.gcs_bucket is None:
            return False
        for path in record.test_data["vision"]["0"]["files"]:
            dt = record.time
            # path_in = f"{self.images_path}/{dt.strftime('%Y')}/{dt.strftime('%m')}/{os.path.basename(path)}"
            path_in = path
            path_out = f"{self.machine_id}/{dt.strftime('%Y')}/{dt.strftime('%m')}/{os.path.basename(path)}"
            try:
                blob = self.gcs_bucket.blob(path_out)
                if not self.simulate:
                    blob.upload_from_filename(filename=path_in)
            except FileNotFoundError:
                self.log.error(f"id {record.id}: {path_in}: file not found.")
                return False
            except Forbidden as e:
                if re.match("^Object '.*?' is subject to bucket's retention policy and cannot be deleted, overwritten or archived until .*?$", e._response.json()["error"]["message"]) is not None:
                    self.log.info(f"id {record.id}: {path_in}: already stored.")
                else:
                    self.log.warning(f"id: {record.id}: failed to store remotely: {str(e)}: {e._response.json()}")
                    return False
            except Exception:
                self.log.error(f"id: {record.id}: failed to store remotely:\n{traceback.format_exc()}")
            self.log.info(f"id: {record.id}: stored remotely")
        return True

    def remote_fetch(self, machine_status=None, machine_id=None):
        """
        Fetch and download files from the server.

        :param machine_status: Status of the machine (e.g., 'logged-in').
        :param machine_id: ID of the machine.
        :return: A list of downloaded file paths or a dictionary with errors if any occur.
        """
        # URLs endpoint from your Django server with machine_id as a query parameter
        if machine_id is None:
            raise ValueError("machine_id cannot be None")
        urls_endpoint = f"http://dev.r5portal.it/get-file-urls/?machine_id={machine_id}"

        if machine_status == "logged-in":
            try:
                # Fetching the list of specific file URLs from the Django server
                if not self.simulate:
                    with requests.Session() as s:
                        self.log.info(f"Fetching list of file URLs from: {urls_endpoint}")

                        # Make the HTTP GET request to fetch the list of URLs
                        response = s.get(urls_endpoint, timeout=5, verify=False)

                        # Log response details
                        self.log.info(f"HTTP Status Code: {response.status_code}")
                        self.log.info(f"Response Headers: {response.headers}")
                        self.log.info(f"Response Content: {response.content}")

                        # Handle HTTP errors for the list of URLs fetch
                        if response.status_code == 404:
                            self.log.warning(f"URLs endpoint not found: {urls_endpoint}. Please check the URL path.")
                            return {"error": "URLs endpoint not found"}
                        elif response.status_code == 403:
                            self.log.warning(f"Access forbidden for URLs endpoint: {urls_endpoint}")
                            return {"error": "Access forbidden"}
                        elif response.status_code != 200:
                            self.log.error(
                                f"Unexpected HTTP response status: {response.status_code} for URL: {urls_endpoint}")
                            return {"error": "Unexpected HTTP response status"}

                        # Parse the list of URLs (assuming the response contains a JSON array of URLs)
                        try:
                            file_urls = response.json()
                            self.log.info(f"Fetched file URLs: {file_urls}")
                        except ValueError as e:
                            self.log.error(f"Error parsing JSON response: {str(e)}")
                            self.log.error(f"Response Content: {response.content}")
                            return {"error": "Failed to parse JSON response"}

                        downloaded_files = []
                        errors = {}

                        # Setup the base download path
                        base_download_path = os.path.join(Path.home(), "PycharmProjects", "st-ten-1")

                        # Iterate over the list of URLs to download each file
                        for specific_file_url in file_urls:
                            try:
                                self.log.info(f"Attempting to fetch file from: {specific_file_url}")

                                # Make the HTTP GET request to fetch the file URL
                                response = s.get(specific_file_url, timeout=5, verify=False)

                                # Log response details
                                self.log.info(f"HTTP Status Code: {response.status_code}")
                                self.log.info(f"Response Headers: {response.headers}")

                                # Handle HTTP errors appropriately for each file
                                if response.status_code == 404:
                                    self.log.warning(f"File not found: {specific_file_url}. Please check the URL path.")
                                    errors[specific_file_url] = "File not found"
                                    continue
                                elif response.status_code == 403:
                                    self.log.warning(f"Access forbidden for file: {specific_file_url}")
                                    errors[specific_file_url] = "Access forbidden"
                                    continue
                                elif response.status_code != 200:
                                    self.log.error(
                                        f"Unexpected HTTP response status: {response.status_code} for URL: {specific_file_url}")
                                    errors[specific_file_url] = f"Unexpected status {response.status_code}"
                                    continue

                                # Determine the subdirectory based on the file URL or other criteria
                                if "warning_images" in specific_file_url:
                                    sub_dir = os.path.join("config", "warning_images", machine_id)
                                elif "ricette" in specific_file_url:
                                    sub_dir = os.path.join("config", "csv_import", "auto_csv_import")
                                else:
                                    sub_dir = "tmp"  # Save others under the temporary folder

                                # Ensure the directory exists
                                download_path = os.path.join(base_download_path, sub_dir)
                                os.makedirs(download_path, exist_ok=True)

                                # Save the file to the determined directory
                                local_file_path = os.path.join(download_path, os.path.basename(specific_file_url))
                                with open(local_file_path, "wb") as f:
                                    f.write(response.content)

                                self.log.info(f"File downloaded successfully: {local_file_path}")
                                downloaded_files.append(local_file_path)

                            except (requests.ConnectionError, requests.Timeout) as e:
                                self.log.warning(
                                    f"Failed to download file from {specific_file_url}, the URL might be unreachable: {str(e)}")
                                errors[specific_file_url] = "URL unreachable"
                            except Exception as e:
                                self.log.error(
                                    f"An unexpected error occurred while downloading {specific_file_url}: {str(e)}")
                                errors[specific_file_url] = "Unexpected error"

                        return {
                            "downloaded_files": downloaded_files,
                            "errors": errors
                        }

            except Exception as e:
                self.log.error(f"An unexpected error occurred while fetching URLs: {str(e)}")
                return {"error": "Unexpected error"}