#!/usr/bin/env bash
# Download the MediaMTX static binary used by scripts/sim_cameras.sh.
# One-time setup. Re-run to upgrade.
set -euo pipefail

VERSION="${MEDIAMTX_VERSION:-1.9.3}"
REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
DEST_DIR="${REPO_ROOT}/.sim"
DEST="${DEST_DIR}/mediamtx"

case "$(uname -s)_$(uname -m)" in
  Linux_x86_64)  ASSET="mediamtx_v${VERSION}_linux_amd64.tar.gz" ;;
  Linux_aarch64) ASSET="mediamtx_v${VERSION}_linux_arm64v8.tar.gz" ;;
  Darwin_x86_64) ASSET="mediamtx_v${VERSION}_darwin_amd64.tar.gz" ;;
  Darwin_arm64)  ASSET="mediamtx_v${VERSION}_darwin_arm64.tar.gz" ;;
  *)
    echo "Unsupported platform: $(uname -s) $(uname -m)" >&2
    exit 1
    ;;
esac

URL="https://github.com/bluenviron/mediamtx/releases/download/v${VERSION}/${ASSET}"

mkdir -p "${DEST_DIR}"
TMP="$(mktemp -d)"
trap 'rm -rf "${TMP}"' EXIT

echo "Downloading ${ASSET}..."
curl -fsSL "${URL}" -o "${TMP}/mediamtx.tar.gz"

echo "Extracting..."
tar -xzf "${TMP}/mediamtx.tar.gz" -C "${TMP}"

mv "${TMP}/mediamtx" "${DEST}"
chmod +x "${DEST}"

echo "Installed: ${DEST}"
"${DEST}" --version || true