"""호령 캐릭터 PNG 추출.

source/characters/horyung.png (3 view layout: bust / back / front)
source/images/saju_page/saju_color_sheet.png (5 emotion stickers in bottom row)
에서 호령 PNG 6개를 추출하여 public/images/saju/horyung/에 저장.
"""
import os
from PIL import Image

SOURCE_ROOT = "../source"
HORYUNG_PATH = f"{SOURCE_ROOT}/characters/horyung.png"
COLORSHEET_PATH = f"{SOURCE_ROOT}/images/saju_page/saju_color_sheet.png"

OUT_DIR = "public/images/saju/horyung"
os.makedirs(OUT_DIR, exist_ok=True)


def crop_save(src_path, box, out_name):
    im = Image.open(src_path).convert("RGBA")
    cropped = im.crop(box)
    cropped.save(f"{OUT_DIR}/{out_name}")
    print(f"saved {out_name} ({cropped.size})")


# ---- horyung.png: 1055 x 1491 (3 vertical views) ----
# 1. BUST SHOT (top): character is slightly right of center.
# 2. BACK VIEW (middle): not used.
# 3. FRONT VIEW (bottom): character with sword, slightly right of center.
src_horyung = Image.open(HORYUNG_PATH)
HW, HH = src_horyung.size
print(f"horyung dims: {HW}x{HH}")

# bust shot — top 1/3, character occupies horizontal middle-right area
crop_save(
    HORYUNG_PATH,
    (int(HW * 0.22), int(HH * 0.01), int(HW * 0.78), int(HH * 0.33)),
    "horyung-bust.png",
)

# front view — bottom 1/3. Measured: top of hat at y≈0.66, character spans x≈0.18~0.82
crop_save(
    HORYUNG_PATH,
    (int(HW * 0.16), int(HH * 0.66), int(HW * 0.82), int(HH * 1.0)),
    "horyung-front.png",
)

# ---- saju_color_sheet.png: 1536 x 1024 ----
# Bottom row contains 6 emotion stickers laid horizontally.
# Visual inspection: stickers occupy roughly x=0.439~0.986, y=0.82~1.0.
# We need 4 stickers (greeting, thinking, pointing, happy) from positions 0~3.
src_sheet = Image.open(COLORSHEET_PATH)
SW, SH = src_sheet.size
print(f"colorsheet dims: {SW}x{SH}")

# 6 stickers in a single row at bottom-right
# Measured visually with red grid overlay:
#   Sticker 1 (greeting): x = 600..750
#   Sticker 2 (thinking): x = 750..900
#   Sticker 3 (pointing): x = 900..1050
#   Sticker 4 (happy):    x = 1050..1200
#   Sticker 5 (caution):  x = 1200..1350  (unused)
#   Sticker 6 (lucky):    x = 1350..1500  (unused)
EMO_X_START = 600
EMO_X_END = 1500
EMO_Y_START = int(SH * 0.79)
EMO_Y_END = int(SH * 1.00)
EMO_COLS = 6
EMO_W = (EMO_X_END - EMO_X_START) / EMO_COLS
EMO_H = EMO_Y_END - EMO_Y_START

# left-to-right: greeting, thinking, pointing, happy, (5th: unused)
positions = [
    ("horyung-greeting.png", 0),
    ("horyung-thinking.png", 1),
    ("horyung-pointing.png", 2),
    ("horyung-happy.png", 3),
]

for name, col in positions:
    x1 = int(EMO_X_START + col * EMO_W)
    y1 = EMO_Y_START
    x2 = int(EMO_X_START + (col + 1) * EMO_W)
    y2 = EMO_Y_END
    crop_save(COLORSHEET_PATH, (x1, y1, x2, y2), name)

print("Done.")