#!/usr/bin/env bash
set -euo pipefail

export DEBIAN_FRONTEND=noninteractive

missing=()
for command_name in cc curl git jq pkg-config xz; do
  if ! command -v "${command_name}" >/dev/null 2>&1; then
    missing+=("${command_name}")
  fi
done
if command -v pkg-config >/dev/null 2>&1; then
  for package_name in libssh2 openssl zlib; do
    if ! pkg-config --exists "${package_name}"; then
      missing+=("pkg-config:${package_name}")
    fi
  done
fi

if [ "${#missing[@]}" -eq 0 ]; then
  echo "Linux build dependencies are already available"
  exit 0
fi

if [ "$(id -u)" -ne 0 ]; then
  printf 'missing Linux build dependencies: %s\n' "${missing[*]}" >&2
  echo "run this CI job as root or bake the missing dependencies into the runner image" >&2
  exit 1
fi

apt-get update
apt-get install -y --no-install-recommends \
  build-essential \
  ca-certificates \
  curl \
  git \
  jq \
  libssh2-1-dev \
  libssl-dev \
  pkg-config \
  xz-utils \
  zlib1g-dev
rm -rf /var/lib/apt/lists/*