#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""站桩槽位素材机检（M-3 迭代 6 T1——48px 档契约断言；重闸素材面闸）。

四断言（契约=计划书 C4/圣经 §8.2）：
  尺寸  高恒 48（槽位源档 ×2 整数放大=盒高 96）；宽 1..75（盒宽 150 半值）。
  锚点  底行有不透明像素（底中锚——纵向比例自底边口径，脚贴画布底缘）。
  色数  ≤32（fixer 批 32 色冻结；NEAREST 采样不产生新色）。
  无插值  alpha 二值（仅 0/255——双线性/混合会在边缘产生中间 α）。

用法: python tools/standee_asset_check.py [角色素材目录]
  默认 game/assets/art/character/；必需集=八敌+主角 portrait/attack/hit。
"""
import os
import sys
from collections import Counter
from PIL import Image

REQUIRED = ["character_enemy_%s.png" % k for k in
            ("bugbear", "drider", "duergar", "duergar_king", "giant_spider",
             "goblin", "hook_horror", "ogre_chief")] + \
           ["character_hero_portrait.png", "character_hero_attack.png", "character_hero_hit.png"]
SLOT_H = 48
W_MAX = 75
COLOR_MAX = 32


def check(path):
    problems = []
    im = Image.open(path).convert("RGBA")
    w, h = im.size
    if h != SLOT_H:
        problems.append("高应 48，实得 %d" % h)
    if not (1 <= w <= W_MAX):
        problems.append("宽应 1..%d，实得 %d" % (W_MAX, w))
    px = im.load()
    colors = set()
    alphas = set()
    bottom_opaque = 0
    for y in range(h):
        for x in range(w):
            c = px[x, y]
            alphas.add(c[3])
            if c[3] > 0:
                colors.add(c[:3])
                if y == h - 1:
                    bottom_opaque += 1
    if bottom_opaque < 1:
        problems.append("底行无不透明像素（底中锚失守——脚未贴画布底缘）")
    if len(colors) > COLOR_MAX:
        problems.append("色数 %d > %d" % (len(colors), COLOR_MAX))
    if not alphas <= {0, 255}:
        problems.append("alpha 非二值（插值痕迹：%s）" % sorted(alphas - {0, 255})[:5])
    return problems, (w, h, len(colors))


def main():
    root = sys.argv[1] if len(sys.argv) > 1 else os.path.join("game", "assets", "art", "character")
    missing = [f for f in REQUIRED if not os.path.isfile(os.path.join(root, f))]
    n_fail = 0
    for f in REQUIRED:
        p = os.path.join(root, f)
        if not os.path.isfile(p):
            print("MISS  %-36s 缺位" % f)
            n_fail += 1
            continue
        problems, info = check(p)
        if problems:
            n_fail += 1
            for pr in problems:
                print("FAIL  %-36s %s" % (f, pr))
        else:
            print("PASS  %-36s %dx%d 色数%d" % (f, info[0], info[1], info[2]))
    print("机检完成：%d 件必需，%d 件未过" % (len(REQUIRED), n_fail))
    sys.exit(1 if n_fail else 0)


if __name__ == "__main__":
    main()