import logging
import imdbinfo as imdb
from structures import PathInfo, FileInfo, PathCategory, FileCategory
from pathlib import Path
import os
import re
import subprocess
import json
import math


def get_metadata(filepath: Path) -> dict:
    cmd = [
        "ffprobe",
        "-v",
        "quiet",
        "-print_format",
        "json",
        "-show_format",
        "-show_streams",
        filepath,
    ]
    result = subprocess.run(
        cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True
    )
    return json.loads(result.stdout)


def classify_show(info: PathInfo) -> PathInfo:
    # Prepare meta information
    episode_durations: list[int] = []
    movie_information = None
    if info.category == PathCategory.SHOW:
        for ep in imdb.get_all_episodes(info.imdb.imdb_id):
            if ep.duration:
                episode_durations.append(int(ep.duration / 60))

    print(set(episode_durations))
    # Go over all files
    count = 0
    for root, dirs, files in os.walk(info.path):
        for filename in files:
            filepath = Path(os.path.join(root, filename))
            if filepath.suffix != ".mkv":
                continue
            m = get_metadata(filepath)
            duration = int(float(m["format"]["duration"]) / 60)
            if (
                math.floor(duration) in episode_durations
                or math.ceil(duration) in episode_durations
            ):
                print(f"{filename} {duration} EPISODE")
                count += 1
            else:
                print(f"{filename} {duration}")

    print(count)
    return info


def classify_movie(info: PathInfo) -> PathInfo:
    logging.error(f"Movie classification not yet implemented.")
    return info


def classify_files(path: str) -> PathInfo | None:
    p = Path(path)

    # Extract title and year
    pattern = re.compile(r"^(?P<title>.+) \((?P<year>[0-9]{4})\)$")
    match = pattern.match(p.name)
    if not match:
        logging.error(
            f"Could not extract title and year from directory name [{p.name}]."
        )
        return None
    title = match.group("title")
    year = int(match.group("year"))
    logging.info(f"Information extracted. Year: [{year}] Title: [{title}]")

    # Fetch from IMDB
    results = imdb.search_title(p.name)
    if results is None:
        logging.error(f"No IMDB results found for query [{p.name}].")
        return None
    imdb_entry = results.titles[0]
    if imdb_entry.title.replace(":", "").replace("-", "") != title.replace(
        ":", ""
    ).replace("-", ""):
        logging.error(
            f"IMDB result title does not match. Expected: [{title}] Actual: [{imdb_entry.title}]"
        )
        return None
    if imdb_entry.year != year:
        logging.error(
            f"IMDB result year does not match. Expected: [{year}] Actual: [{imdb_entry.year}]"
        )
        return None
    logging.info(f"Found matching IMDB entry with id [{imdb_entry.imdb_id}].")

    info = PathInfo(
        path=p, title=title, year=year, imdb_id=imdb_entry.imdb_id, imdb=imdb_entry
    )

    # Identify category
    if imdb_entry.kind == "tvSeries":
        info.category = PathCategory.SHOW
        logging.info(f"Path identified as containing SHOW.")
        info = classify_show(info)
    elif imdb_entry.kind == "movie":
        info.category = PathCategory.MOVIE
        logging.info(f"Path identified as containing MOVIE.")
        info = classify_movie(info)
    else:
        info.category = PathCategory.UNKNOWN
        logging.error(
            f"IMDB entry has unknown qualifier for content [{imdb_entry.kind}]."
        )

    return info


if __name__ == "__main__":
    results = classify_files("/home/max/Media Library/testing/The Mentalist (2008)")

    print(results)
    print("Done.")