1 files changed, 151 insertions, 0 deletions
diff --git a/pkgs/games/openra/mod-update.sh b/pkgs/games/openra/mod-update.sh
new file mode 100755
index 00000000000..52bcada8f9a
--- /dev/null
+++ b/pkgs/games/openra/mod-update.sh
@@ -0,0 +1,151 @@
+#!/usr/bin/env bash
+
+# for mod in $(nix eval --raw '(
+#   with import <nixpkgs> { };
+#   with lib;
+#   let mods = attrNames (removeAttrs openraPackages.mods [ "recurseForDerivations" ]);
+#   in concatStringsSep " " mods
+# )'); do
+#   ./mod-update.sh "$mod"
+# done
+
+# Uses:
+# https://github.com/msteen/nix-prefetch
+# https://github.com/msteen/nix-update-fetch
+
+mod=$1
+commit_count=$2
+token=
+nixpkgs='<nixpkgs>'
+
+die() {
+  ret=$?
+  echo "$*" >&2
+  exit $ret
+}
+
+curl() {
+  command curl --silent --show-error "$@"
+}
+
+get_sha1() {
+  local owner=$1 repo=$2 ref=$3
+  # https://developer.github.com/v3/#authentication
+  curl -H "Authorization: token $token" -H 'Accept: application/vnd.github.VERSION.sha' "https://api.github.com/repos/$owner/$repo/commits/$ref"
+}
+
+[[ -n $token ]] || die "Please edit this script to include a GitHub API access token, which is required for API v4:
+https://help.github.com/articles/creating-a-personal-access-token-for-the-command-line/"
+
+# Get current mod_owner and mod_repo.
+vars=$(nix-prefetch --file "$nixpkgs" "openraPackages.mods.$mod" --index 0 --quiet --output json --skip-hash > >(
+  jq --raw-output 'with_entries(select(.value | contains("\n") | not)) | to_entries | .[] | .key + "=" + .value')) || exit
+
+while IFS='=' read -r key val; do
+  declare "mod_${key}=${val}"
+done <<< "$vars"
+
+if [[ -n $commit_count ]]; then
+  query_on_commit='{
+  history(first: 10) {
+    nodes {
+      abbreviatedOid
+      oid
+    }
+    totalCount
+  }
+}'
+else
+  query_on_commit='{
+  history(first: 0) {
+    totalCount
+  }
+  abbreviatedOid
+  oid
+}'
+fi
+
+query='query {
+  repository(owner: \"'"$mod_owner"'\", name: \"'"$mod_repo"'\") {
+    defaultBranchRef {
+      target {
+        ... on Commit '"$query_on_commit"'
+      }
+    }
+    licenseInfo {
+      key
+    }
+  }
+}'
+
+# Newlines are not allowed in a query.
+# https://developer.github.com/v4/guides/forming-calls/#communicating-with-graphql
+query=$(echo $query)
+
+# https://developer.github.com/v4/guides/using-the-explorer/#configuring-graphiql
+json=$(curl -H "Authorization: bearer $token" -X POST -d '{ "query": "'"$query"'" }' https://api.github.com/graphql) || exit
+
+if [[ -n $commit_count ]]; then
+  json=$(jq "$commit_count"' as $commit_count
+    | .data.repository.defaultBranchRef.target
+    |= (.history |= (. | del(.nodes) | .totalCount = $commit_count))
+    + (.history | .nodes[.totalCount - $commit_count])' <<< "$json") || exit
+fi
+
+vars=$(jq --raw-output '.data.repository | {
+  license_key: .licenseInfo.key,
+} + (.defaultBranchRef.target | {
+  version: ((.history.totalCount | tostring) + ".git." + .abbreviatedOid),
+  rev: .oid,
+}) | to_entries | .[] | .key + "=" + (.value | tostring)' <<< "$json") || exit
+
+while IFS='=' read -r key val; do
+  declare "mod_${key}=${val}"
+done <<< "$vars"
+
+mod_config=$(curl "https://raw.githubusercontent.com/$mod_owner/$mod_repo/$mod_rev/mod.config") || exit
+
+while IFS='=' read -r key val; do
+  declare "${key,,}=$(jq --raw-output . <<< "$val")"
+done < <(grep '^\(MOD_ID\|ENGINE_VERSION\|AUTOMATIC_ENGINE_MANAGEMENT\|AUTOMATIC_ENGINE_SOURCE\)=' <<< "$mod_config")
+
+for var in mod_id engine_version automatic_engine_management automatic_engine_source; do
+  echo "$var=${!var}" >&2
+done
+echo >&2
+
+[[ $mod_id == "$mod" ]] ||
+  die "The mod '$mod' reports being mod '$mod_id' instead."
+[[ $mod_license_key == gpl-3.0 ]] ||
+[[ $(echo $(head -2 <(curl "https://raw.githubusercontent.com/$mod_owner/$mod_repo/$mod_rev/COPYING"))) == 'GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007' ]] ||
+  die "The mod '$mod' is licensed under '$mod_license_key' while expecting 'gpl-3.0'."
+[[ $automatic_engine_management == True ]] ||
+  die "The mod '$mod' engine is not managed as a read-only dependency."
+[[ $automatic_engine_source =~ https://github.com/([a-zA-Z0-9_\-]+)/([a-zA-Z0-9_\-]+)/archive/([a-zA-Z0-9_\-\$\{\}]+).zip ]] ||
+  die "The mod '$mod' engine is not hosted on GitHub as an archive."
+
+engine_owner=${BASH_REMATCH[1]}
+engine_repo=${BASH_REMATCH[2]}
+[[ ${BASH_REMATCH[3]} == '${ENGINE_VERSION}' ]] || engine_version=${BASH_REMATCH[3]}
+engine_rev=$(get_sha1 "$engine_owner" "$engine_repo" "$engine_version")
+
+for type in mod engine; do
+  for name in version owner repo rev; do
+    var="${type}_${name}"
+    echo "$var=${!var}" >&2
+  done
+  echo >&2
+done
+
+i=0
+for type in mod engine; do
+  fetcher_args=()
+  for name in owner repo rev; do
+    var="${type}_${name}"
+    fetcher_args+=( "--$name" "${!var}" )
+  done
+  var="${type}_version"
+  version=${!var}
+  nix-update-fetch --yes --version "$version" "$(nix-prefetch --quiet --file "$nixpkgs" "openraPackages.mods.$mod" --index $i --output json --with-position --diff -- "${fetcher_args[@]}")"
+  (( i++ ))
+done