#!/bin/sh
# ============================================================
#  下载地址（首次运行从这里拉取 notify.exe）—— 按需修改
DOWNLOAD_URL="https://git.pchuan.top/cc-tools/notify/releases/download/v1.0.0/notify.exe"
# ============================================================

DIR="$(cd "$(dirname "$0")" && pwd)"
BIN="$DIR/../bin"
EXE="$BIN/notify.exe"
LOCK="$BIN/notify.download.lock"

# 首次运行：后台下载，不阻塞钩子
if [ ! -f "$EXE" ]; then
    mkdir -p "$BIN" 2>/dev/null
    # mkdir 原子：成功=本进程负责下载，失败=已有进程在下
    if mkdir "$LOCK" 2>/dev/null; then
        TMP="$EXE.downloading"
        # nohup + & 让下载脱离钩子在后台跑；完成后原子改名并清锁
        nohup sh -c "curl -fsSL '$DOWNLOAD_URL' -o '$TMP' && mv -f '$TMP' '$EXE'; rmdir '$LOCK' 2>/dev/null" >/dev/null 2>&1 &
    fi
fi

# 本次不等下载；exe 就绪后才转发参数与 stdin
[ -f "$EXE" ] && exec "$EXE" "$@"