#!/usr/bin/env nix-shell
#!nix-shell -i bash -p curl jq nurl nix-prefetch-npm-deps cacert
# Update airdrome to the latest release from GitHub.
#
# Usage: ./update.sh           # auto-detect latest tag
#        ./update.sh 4.3       # pin to a specific tag

set -euo pipefail

REPO="JPGuillemin/Airdrome"
PKG_FILE="$(cd "$(dirname "$0")" && pwd)/package.nix"

# --- resolve version --------------------------------------------------------
if [[ $# -ge 1 ]]; then
  VERSION="$1"
else
  VERSION=$(curl -sL "https://api.github.com/repos/$REPO/releases/latest" \
    | jq -r '.tag_name')
  if [[ -z "$VERSION" || "$VERSION" == "null" ]]; then
    echo "error: could not determine latest release" >&2
    exit 1
  fi
fi
echo "version: $VERSION"

# --- source hash (via nurl) -------------------------------------------------
SRC_HASH=$(nurl "https://github.com/$REPO" "$VERSION" --hash)
echo "src hash: $SRC_HASH"

# --- npm deps hash -----------------------------------------------------------
# Prefetch source, install deps, and hash them
SRC_PATH=$(nix build --no-link --print-out-paths \
  --impure --expr "
    (builtins.getFlake \"nixpkgs\").legacyPackages.\${builtins.currentSystem}.fetchFromGitHub {
      owner = \"JPGuillemin\";
      repo = \"Airdrome\";
      rev = \"$VERSION\";
      hash = \"$SRC_HASH\";
    }
  ")
NPM_DEPS_HASH=$(nix-prefetch-npm-deps "$SRC_PATH/package-lock.json")
echo "npm deps hash: $NPM_DEPS_HASH"

# --- patch package.nix -------------------------------------------------------
sed -i -E "
  s|(version = \").*(\";)|\1${VERSION}\2|
  s|(hash = \").*(\";)|\1${SRC_HASH}\2|
  s|(npmDepsHash = \").*(\";)|\1${NPM_DEPS_HASH}\2|
" "$PKG_FILE"

echo "updated $PKG_FILE"