#!/usr/bin/env bash
# 目标：下载远程升级脚本、执行、销毁临时文件
set -euo pipefail

REMOTE="https://git.orionc.me/orion/script/raw/branch/main/homebrew/brew-upgrade-manager.sh"
TEMP="$(mktemp "${TMPDIR:-/tmp}/brew-upgrade-manager.XXXXXX.sh")"
KEYCHAIN_SERVICE="${BREWUP_KEYCHAIN_SERVICE:-brewup-sudo-password}"
ASKPASS_TEMP="$(mktemp "${TMPDIR:-/tmp}/brewup-askpass.XXXXXX.sh")"
cleanup() {
    rm -f "$TEMP" "$ASKPASS_TEMP"
}
trap cleanup EXIT INT TERM

PATH="/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin"
export PATH

setup_sudo_askpass() {
    cat > "$ASKPASS_TEMP" <<'EOF'
#!/usr/bin/env bash
exec /usr/bin/security find-generic-password -a "${USER:-$(id -un)}" -s "${BREWUP_KEYCHAIN_SERVICE:-brewup-sudo-password}" -w
EOF
    chmod 700 "$ASKPASS_TEMP"
    export SUDO_ASKPASS="$ASKPASS_TEMP"
    export BREWUP_KEYCHAIN_SERVICE="$KEYCHAIN_SERVICE"

    if ! /usr/bin/security find-generic-password -a "$USER" -s "$KEYCHAIN_SERVICE" -w >/dev/null 2>&1; then
        printf "首次使用：请输入一次 sudo 密码，将保存到 macOS Keychain："
        IFS= read -r -s BREWUP_SUDO_PASSWORD
        printf "\n"
        /usr/bin/security add-generic-password -U -a "$USER" -s "$KEYCHAIN_SERVICE" -w "$BREWUP_SUDO_PASSWORD" >/dev/null
        unset BREWUP_SUDO_PASSWORD
    fi

    echo "正在通过 Keychain 准备 sudo 凭据..."
    if ! sudo -A -v; then
        echo "Keychain 中的 sudo 密码不可用，请删除后重新保存：" >&2
        echo "  security delete-generic-password -a \"$USER\" -s \"$KEYCHAIN_SERVICE\"" >&2
        exit 1
    fi
}

setup_sudo_askpass

echo "正在下载远程脚本..."
curl -f -sSL "$REMOTE" -o "$TEMP"
chmod 600 "$TEMP"

if [[ -n "${BREWUP_SHA256:-}" ]]; then
    echo "正在校验脚本 SHA256..."
    actual_sha256="$(shasum -a 256 "$TEMP")"
    actual_sha256="${actual_sha256%% *}"
    if [[ "$actual_sha256" != "$BREWUP_SHA256" ]]; then
        echo "脚本 SHA256 不匹配，已停止执行。" >&2
        echo "Expected: $BREWUP_SHA256" >&2
        echo "Actual:   $actual_sha256" >&2
        exit 1
    fi
fi


if [[ "${BREWUP_DEBUG:-}" == "1" ]]; then
    echo "Downloaded script first line:"
    head -n 1 "$TEMP"
fi

export COLUMNS="130"
bash "$TEMP" "$@"