"""Download UI art used by https://www.dota2.com/heroes.

- Landscape hero cards: Steam CDN `heroes/{key}.png`
- Attribute icons: Steam CDN `icons/hero_{strength,agility,...}.png`

Separate from `templates/cdn/` face crops used for top-bar matching.

Usage:
    python fetch_hero_portraits.py
    python fetch_hero_portraits.py --force

Writes:
    assets/hero_portraits/{key}.png
    assets/attr_icons/{str,agi,int,all}.png
"""

from __future__ import annotations

import argparse
import json

from common import ATTR_ICONS, HERO_PORTRAITS, HEROES_JSON
from http_utils import fetch_hero_keys, http_bytes

# wide = face headshots; crop = waist-up 3D renders (usually worse in dense grids).
CARD_URL = (
    "https://cdn.cloudflare.steamstatic.com/apps/dota2/images/dota_react/heroes/{key}.png"
)
CROP_URL = (
    "https://cdn.cloudflare.steamstatic.com/apps/dota2/images/dota_react/heroes/crops/{key}.png"
)
ATTR_ICON_URL = (
    "https://cdn.cloudflare.steamstatic.com/apps/dota2/images/dota_react/icons/{name}.png"
)
ATTR_FILES = {
    "str": "hero_strength",
    "agi": "hero_agility",
    "int": "hero_intelligence",
    "all": "hero_universal",
}


def hero_keys() -> list[str]:
    if HEROES_JSON.is_file():
        rows = json.loads(HEROES_JSON.read_text(encoding="utf-8"))
        return [h["key"] for h in rows if h.get("key")]
    return fetch_hero_keys()


def fetch_attr_icons(*, force: bool) -> tuple[int, int, int]:
    ATTR_ICONS.mkdir(parents=True, exist_ok=True)
    ok = skip = fail = 0
    for attr, name in ATTR_FILES.items():
        out = ATTR_ICONS / f"{attr}.png"
        if out.is_file() and not force:
            skip += 1
            continue
        try:
            data = http_bytes(ATTR_ICON_URL.format(name=name), timeout=30)
            out.write_bytes(data)
            ok += 1
            print(f"  attr {attr} <- {name} ({len(data)} bytes)")
        except Exception as e:  # noqa: BLE001
            fail += 1
            print(f"  FAIL attr {attr}: {e}")
    return ok, skip, fail


def main() -> None:
    ap = argparse.ArgumentParser(description="Download dota2.com/heroes UI art")
    ap.add_argument("--force", action="store_true", help="re-download existing files")
    ap.add_argument(
        "--style",
        choices=("crop", "wide"),
        default="wide",
        help="wide = face headshots for draft grid (default); crop = waist-up renders",
    )
    args = ap.parse_args()

    print("attribute icons...")
    a_ok, a_skip, a_fail = fetch_attr_icons(force=args.force)

    HERO_PORTRAITS.mkdir(parents=True, exist_ok=True)
    keys = hero_keys()
    ok = skip = fail = 0
    url_t = CROP_URL if args.style == "crop" else CARD_URL
    print(f"hero cards ({args.style})...")
    for key in keys:
        out = HERO_PORTRAITS / f"{key}.png"
        if out.is_file() and not args.force:
            skip += 1
            continue
        try:
            data = http_bytes(url_t.format(key=key), timeout=30)
            out.write_bytes(data)
            ok += 1
            print(f"  ok {key} ({len(data)} bytes)")
        except Exception as e:  # noqa: BLE001
            fail += 1
            print(f"  FAIL {key}: {e}")
    print(f"attrs: downloaded={a_ok} skipped={a_skip} failed={a_fail} -> {ATTR_ICONS}")
    print(f"heroes: downloaded={ok} skipped={skip} failed={fail} -> {HERO_PORTRAITS}")


if __name__ == "__main__":
    main()