#!/usr/bin/env python3
"""Phase 3: 准备 hiyori 表情 GIF（等比例缩小到高 360px，与 PoC 保持一致）

输入: docs/Rtc_AIavatar/Resources/hiyori_free_zh/Export/m{03,06,07}/hiyori_m*.gif
输出: spiffs_image/hiyori_m{03,06,07}.gif

处理策略（与 PoC 阶段 hiyori_m05.gif 一致，复现 209×360 等比例缩放）:
- 不裁剪，保持源 GIF 的人物全身完整（407×700 原始比例）
- 用 gifsicle --resize _x360 让高度 = LCD 360px，宽度按比例自动算 → 约 209px
- LVGL lv_obj_align(LV_ALIGN_CENTER) 居中显示：垂直充满 LCD，左右各 ~75px 留边
- 不加 --lossy / --colors（保留 256 色，画质优先；CLAUDE.md 经验）
- 只用 -O3 优化文件大小

LCD 360×360，目标显示效果：人物充满垂直方向、横向居中、左右留边显示背景图
"""
import subprocess
import sys
from pathlib import Path

GIFSICLE = "/opt/homebrew/var/homebrew/tmp/.cellar/gifsicle/1.96/bin/gifsicle"
TARGET_HEIGHT = 360  # = LCD 高度，与 PoC 阶段 m05.gif 一致

SRC_BASE = Path("docs/Rtc_AIavatar/Resources/hiyori_free_zh/Export")
DST_BASE = Path("spiffs_image")
TARGETS = ["m03", "m06", "m07"]


def check_tools():
    if not Path(GIFSICLE).exists():
        import shutil
        alt = shutil.which("gifsicle")
        if alt:
            globals()["GIFSICLE"] = alt
            print(f"使用 PATH 中的 gifsicle: {alt}")
        else:
            print(f"ERROR: gifsicle 不存在于 {GIFSICLE}，且 PATH 中找不到", file=sys.stderr)
            sys.exit(1)


def process_gif(src_path, dst_path):
    """处理单个 GIF: gifsicle 等比例缩小到高 360px"""
    src_size_kb = Path(src_path).stat().st_size / 1024

    # 读源尺寸（仅日志用）
    info = subprocess.check_output(
        [GIFSICLE, "--info", str(src_path)], text=True
    )
    # 解析 "logical screen WxH"
    src_w, src_h, frame_count = "?", "?", "?"
    for line in info.splitlines():
        if "logical screen" in line:
            wh = line.split("logical screen")[1].strip().split("x")
            src_w, src_h = wh[0], wh[1]
        if "images" in line and line.startswith("*"):
            frame_count = line.split()[-2]

    # gifsicle: 高度 = 360，宽度按比例自动算
    cmd = [
        GIFSICLE,
        "--resize", f"_x{TARGET_HEIGHT}",
        "-O3",
        str(src_path),
        "-o", str(dst_path),
    ]

    print(f"  源: {src_w}x{src_h}, {frame_count} 帧, {src_size_kb:.1f} KB")
    subprocess.run(cmd, check=True)

    # 验证输出尺寸
    dst_info = subprocess.check_output([GIFSICLE, "--info", str(dst_path)], text=True)
    for line in dst_info.splitlines():
        if "logical screen" in line:
            dst_wh = line.split("logical screen")[1].strip()
            break
    else:
        dst_wh = "?"

    dst_size_kb = Path(dst_path).stat().st_size / 1024
    reduction = (1 - dst_size_kb / src_size_kb) * 100
    print(f"  输出: {dst_wh}, {dst_size_kb:.1f} KB (节省 {reduction:.1f}%)")


def main():
    check_tools()

    if not DST_BASE.exists():
        print(f"ERROR: 目标目录 {DST_BASE} 不存在", file=sys.stderr)
        sys.exit(1)

    print(f"=== Phase 3: 处理 hiyori GIF (等比例缩小到高 {TARGET_HEIGHT}px) ===\n")

    total_kb = 0
    for name in TARGETS:
        src = SRC_BASE / name / f"hiyori_{name}.gif"
        dst = DST_BASE / f"hiyori_{name}.gif"

        if not src.exists():
            print(f"SKIP {name}: 源文件不存在 {src}")
            continue

        print(f"处理 {name}...")
        try:
            process_gif(src, dst)
            total_kb += Path(dst).stat().st_size / 1024
        except subprocess.CalledProcessError as e:
            print(f"  ERROR: gifsicle 失败: {e}", file=sys.stderr)
            sys.exit(1)
        print()

    print(f"=== 合计输出: {total_kb:.1f} KB ({total_kb / 1024:.2f} MB) ===")


if __name__ == "__main__":
    main()