from config import *
import requests, time, urllib.parse
from collections import defaultdict
from datetime import datetime, timedelta

def lf_request(method, **params):
    # Fixa 'from_' → 'from' och 'to_' → 'to' (Last.fm accepterar inte Python-säkra namn)
    for alt, real in (("from_", "from"), ("to_", "to")):
        if alt in params:
            params[real] = params.pop(alt)
    url = "https://ws.audioscrobbler.com/2.0/"
    params.update({
        "method": method,
        "api_key": LASTFM_API_KEY,
        "format": "json"
    })
    try:
        r = requests.get(url, params=params)
        r.raise_for_status()
        return r.json()
    except Exception as e:
        print(f"[LFM ERR] {e}")
        return None

def recent_artists():
    since = int((datetime.utcnow() - timedelta(days=30 * RECENT_MONTHS)).timestamp())
    counts = defaultdict(int)
    page = 1

    while True:
        js = lf_request(
            "user.getRecentTracks", user=LASTFM_USERNAME,
            limit=200, page=page, from_=since
        )
        if not js:
            break

        for t in js.get("recenttracks", {}).get("track", []):
            a = t["artist"]
            counts[(a["#text"], a.get("mbid", ""))] += 1

        attr = js.get("recenttracks", {}).get("@attr", {})
        if page >= int(attr.get("totalPages", 1)):
            break
        page += 1

    return [(n, m) for (n, m), c in counts.items() if c >= MIN_PLAYS]