"""
Process logs derived from social cataloguing site data exports, using various APIs.
"""

import json
import os
import re
import time
import requests
from dotenv import load_dotenv
from add_item import cleanup_result, import_by_id, setup_logger

logger = setup_logger("process_logs")

load_dotenv()

TMDB_API_KEY = os.getenv("TMDB_API_KEY")
TVDB_API_KEY = os.getenv("TVDB_API_KEY")

if "" == TMDB_API_KEY:
    logger.warning("TMDB API key not found")
if "" == TVDB_API_KEY:
    logger.warning("TVDB API key not found")


def process_log(media_type, log) -> None:
    """Run through a log and call the appropriate API for each item found"""

    logger.info(f"Processing {media_type}/{log}…")

    with open(f"./data/{media_type}/{log}.json", "r", encoding='utf-8') as log_file:
        log_items = json.load(log_file)

    log_item_values = {}

    id_key = ""
    if "books" == media_type:
        id_key = "ol_id"
    elif media_type in ["films", "tv-series", "tv-episodes"]:
        id_key = "tmdb_id"
    elif "games" == media_type:
        id_key = "gb_id"

    for i, item in enumerate(log_items):
        try:
            if id_key not in item and "skip" not in item:
                if media_type in ["films", "books"]:
                    item_title = item["Title"]
                elif "tv-episodes" == media_type:
                    item_title = item["Episode Title"]
                elif "tv-series" == media_type:
                    item_title = item["Show Title"]

                logger.info(f"Processing {item_title}…")

                # Rename pre-existing fields
                if "Date Added" in item:
                    log_item_values["date_added"] = item["Date Added"]
                    del item["Date Added"]

                if "date_added" in item:
                    log_item_values["date_added"] = item["date_added"]

                if "Date Started" in item:
                    log_item_values["date_started"] = item["Date Started"]
                    del item["Date Started"]

                if "date_started" in item:
                    log_item_values["date_started"] = item["date_started"]

                if "Date Finished" in item:
                    log_item_values["date_finished"] = item["Date Finished"]
                    del item["Date Finished"]
                    if "Date Read" in item:
                        if item["Date Finished"] == item["Date Read"]:
                            del item["Date Read"]
                        else:
                            raise Exception(f"'Date Read' != 'Date Finished' for {item['Title']}")

                if "date_finished" in item:
                    log_item_values["date_finished"] = item["date_finished"]

                if "Read Count" in item:
                    log_item_values["read_count"] = item["Read Count"]
                    del item["Read Count"]

                if "read_count" in item:
                    log_item_values["read_count"] = item["read_count"]

                if "Date Watched" in item:
                    log_item_values["date_finished"] = item["Date Watched"]
                    del item["Date Watched"]

                if "Rewatch" in item:
                    log_item_values["is_repeat"] = item["Rewatch"]
                    del item["Rewatch"]

                if "Comments" in item:
                    log_item_values["comments"] = item["Comments"]
                    del item["Comments"]

                if "Series Title" in item:
                    log_item_values["series_title"] = item["Series Title"]
                    del item["Series Title"]

                if "Episode Title" in item:
                    log_item_values["name"] = item["Episode Title"]
                    del item["Episode Title"]

                if "Episode Number" in item:
                    if re.search("[0-9]+x[0-9]+", item["Episode Number"]) is not None:
                        season_no, _, episode_no = log_item_values[
                            "episode_number"
                        ].split("x")

                    elif (
                        re.search("S[0-9]+E[0-9]+", item["Episode Number"]) is not None
                    ):
                        season_no, _, episode_no = log_item_values[
                            "episode_number"
                        ].split("E")

                    elif re.search("E[0-9]+", item["Episode Number"]) is not None:
                        season_no = None
                        episode_no = item["episode_number"][1:]
                    else:
                        logger.error(
                            f"Invalid episode number format '{item['Episode Number']}'"
                        )
                        return

                    log_item_values["season_number"] = season_no
                    log_item_values["episode_number"] = episode_no
                    del item["Episode Number"]

                if "IMDB ID" in item and item["IMDB ID"] != "":
                    new_log_item = import_by_id(item["IMDB ID"], media_type)

                elif "books" == media_type and "wishlist" == log:
                    ol_work_id = re.search("OL[0-9]+W", input(f"Enter OpenLibrary Work ID for '{item_title}' ({item['Author']}): "))
                    try:
                        new_log_item = import_by_id(ol_work_id[0], media_type, log)
                    except:
                        logger.info("Skipping…")

                elif "ISBN13" in item and item["ISBN13"] != "" and item["ISBN13"] is not None:
                    new_log_item = import_by_id(item["ISBN13"], media_type, log)

                elif "ISBN" in item and item["ISBN"] != "" and item["ISBN"] is not None:
                    new_log_item = import_by_id(item["ISBN13"], media_type, log)

                else:
                    new_log_item = import_by_details(item, item_title, media_type)

                if new_log_item is None:
                    if media_type in ["films", "tv-series", "tv-episodes"] and "imdb_id" not in item:
                        item["imdb_id"] = input(f"Enter IMDB ID for {item_title}: ")

                        if re.search("tt[0-9]+", item["imdb_id"]) is not None:
                            log_items[i] = import_by_id(item["imdb_id"], media_type)

                            with open(
                                f"./data/{media_type}/{log}.json",
                                "w",
                                encoding='utf-8'
                            ) as log_file:
                                json.dump(log_items, log_file, indent=4)

                    elif "books" == media_type:
                        if "ISBN" not in item and "ISBN13" not in item:
                            item["ISBN"] = input(f"Enter ISBN for {item_title}: ")

                            if re.search("[0-9-]+", item["ISBN"]) is not None:
                                log_items[i] = import_by_id(item["ISBN"], media_type)

                                with open(
                                    f"./data/{media_type}/{log}.json",
                                    "w",
                                    encoding='utf-8'
                                ) as log_file:
                                    json.dump(log_items, log_file, indent=4)

                        else:
                            logger.warning(f"Skipped '{item_title}'")
                            log_items[i]["skip"] = True

                    else:
                        logger.warning(f"Skipped {item_title}")

                else:
                    log_items[i] = new_log_item

                    if i % 3 == 0:
                        with open(
                            f"./data/{media_type}/{log}.json",
                            "w",
                            encoding='utf-8'
                        ) as log_file:
                            json.dump(log_items, log_file, indent=4)

                if log_items[i] is not None:
                    log_items[i] |= log_item_values

        except KeyError:
            print(json.dumps(item, indent=4))

    with open(f"./data/{media_type}/{log}.json", "w", encoding='utf-8') as log_file:
        json.dump(log_items, log_file, indent=4)

    logger.info(f"Finished processing {media_type}/{log}")


def import_by_details(item, item_title, media_type) -> dict:
    """Import an item when lacking a unique identifier"""

    if media_type in ["films", "tv-series"]:
        return import_from_tmdb_by_details(item, item_title, media_type)

    if media_type in ["tv-episodes"]:
        return  # import_from_tvdb_by_details(item, item_title, media_type)

    if media_type in ["books"]:
        return  # import_from_openlibrary_by_details(item, item_title, media_type)

    if media_type in ["games"]:
        return  # import_from_igdb_by_details(item, item_title, media_type)


def import_from_tmdb_by_details(item, item_title, media_type) -> dict:
    """Retrieve a film or TV series from TMDB using its title"""

    logger.info(f"Processing {item_title}…")

    api_url = f"https://api.themoviedb.org/3/search/{'movie' if 'films' == media_type else 'tv'}"

    # Sending API request
    response = requests.get(
        api_url,
        params={
            "query": item_title,
            "include_adult": True,
            "year": item["Release Year"] if "Release Year" in item else None,
        },
        headers={"Authorization": f"Bearer {TMDB_API_KEY}"},
        timeout=15
    )

    # Process the response
    if 200 == response.status_code:
        logger.debug(response.status_code)
    elif 429 == response.status_code:
        time.sleep(2)
        return import_from_tmdb_by_details(item, item_title, media_type)
    else:
        logger.error(response.text)

    response_data = json.loads(response.text)["results"]

    if 1 == len(response_data):
        return cleanup_result(response_data[0], media_type)

    if 0 == len(response_data):
        logger.warning(f"Returned no {media_type} for {item_title}")

    elif 1 < len(response_data):
        if "films" == media_type:
            title_key = "title"
        elif "tv-series" == media_type:
            title_key = "name"

        filtered_response_data = [
            result for result in response_data if result[title_key] == item_title
        ]
        frd_len = len(filtered_response_data)

        if 1 == frd_len:
            return cleanup_result(response_data[0], media_type)

        logger.warning(f"Returned more than one {media_type} for '{item_title}':\n")
        print(
            json.dumps(
                filtered_response_data
                if len(filtered_response_data) > 0
                else response_data,
                indent=4,
            )
        )

        last_index = len(filtered_response_data if frd_len > 0 else response_data) - 1
        idx = input(
            f"\nEnter the index of the result to use [0-{last_index}]: "
        )

        if "" != idx:
            try:
                return cleanup_result(response_data[int(idx)], media_type)

            except Exception as exc:
                raise Exception("Index invalid") from exc

    item["IMDB ID"] = input(f"Enter IMDB ID for {item_title}: ")

    if "" != item["IMDB ID"]:
        return import_by_id(item["IMDB ID"], media_type)

    logger.warning(f"Skipped {media_type} '{item_title}'")
    return item


def main() -> None:
    """Prompt user to select media type and log to process"""

    media_type = ""
    while media_type not in ["films", "tv-episodes", "tv-series", "books"]:
        media_type = input("Select media type [films|tv-episodes|tv-series|books]: ")

        try:
            if "films" == media_type:
                log = ""
                while log not in ["log", "wishlist"]:
                    log = input("Enter log to process [log|wishlist]: ")

            elif "books" == media_type:
                log = ""
                while log not in ["log", "current", "wishlist"]:
                    log = input("Enter log to process [log|current|wishlist]: ")

            elif "tv-series" == media_type:
                log = "log"

            elif "tv-series" == media_type:
                log = ""
                while log not in ["log", "current", "wishlist"]:
                    log = input("Enter log to process [log|current|wishlist]: ")

            process_log(media_type, log)

        except Exception:
            logger.exception("Exception occurred")


if __name__ == "__main__":
    main()