import os
from typing import Dict, List, Optional
import logging
from urllib import parse
import requests
import json
from similarity.string_handling import normalize_string

logger = logging.getLogger('similarity')


def parse_response(content: List, target: str, min_similarity: float) -> List[Dict]:
    if len(content) is not 0:
        similar_artists = []
        for artist in content["similarartists"]["artist"]:
            if artist["name"].count(target) == 0:
                if float(artist["match"]) >= min_similarity:
                    similar_artists.append({"name": artist["name"],
                                            "similarity_score": artist["match"]})
            else:
                logging.debug(f"Omitting {artist['name']} from similar artists for {target} as it contains the target.")
        return similar_artists
    else:
        return []


def get_similar_artists(artist: str, min_similarity: Optional[float] = 0.0) -> List[Dict]:
    normalized_artist_name = normalize_string(artist)
    if artist != normalized_artist_name:
        logger.info(f"Processing a query for {artist} (normalized to {normalized_artist_name})...")
    else:
        logger.info(f"Processing a query for {artist}...")

    try:
        response = requests.get(
            url="http://ws.audioscrobbler.com/2.0/",
            params={
                "method": "artist.getsimilar",
                "artist": normalized_artist_name,
                "api_key": os.getenv("API_KEY"),
                "format": "json",
            },
        )

        response_content = json.loads(response.content)

        if "error" in response_content:
            logger.error(
                f"Audioscrobbler API returned error {response_content['error']}: {response_content['message']}")
            return []
        else:
            return parse_response(response_content, artist, min_similarity)
    except requests.exceptions.RequestException:
        logger.error("HTTP Request failed for {normalized_artist_name} with HTTP status code {response.status_code}.")