1 files changed, 58 insertions, 1 deletions
diff --git a/mcsh.sh b/mcsh.sh
index 900c5d9..9c0ecca 100755
--- a/mcsh.sh
+++ b/mcsh.sh
@@ -187,6 +187,63 @@ function update_profile (
 )
 
 function update_metadata (
+	meta_filter="$(cat <<-'EOF'
+		def apply_optional: if has("rules") then
+			{
+				"rules": [.rules[] | {
+					"action": .action,
+					"match": del(.action)
+				}],
+				"value": del(.rules)
+			} as $optional
+			| if $optional.rules[].match | inside($info[0]) then
+				$optional.value
+			else
+				empty
+			end
+		end;
+
+		def replace_placeholders: {
+			"version_name": .id,
+			"version_type": .type,
+
+			"assets_index_name": .assets,
+
+			"classpath": (. as $root | [
+				.libraries[] | apply_optional | "${libraries_directory}/" + .downloads.artifact.path
+			] + ["${versions_directory}/\($root.id)/client.jar"] | join(":")),
+			"clientid": "idfk",
+
+			# log4j config path
+			"path": "${versions_directory}/\(.id)/log4j.xml"
+		} as $strings | walk(if type == "string" then
+			gsub("\\${(?<key>.*)}"; "\($strings[.key] // "${\(.key)}")")
+		end);
+
+		replace_placeholders | {
+			"args": .arguments | to_entries | [.[] | {
+				"key": .key,
+				"value": .value | [
+					.[] | if type == "object" then
+						apply_optional | .value
+					end
+				] | flatten
+			}] | from_entries, # as $args | $args + {"jvm": [.logging.client.argument] + $args.jvm}),
+			"libraries": [.libraries[] | apply_optional | {
+				"name": .name,
+				"path": .downloads.artifact.path,
+				"url": .downloads.artifact.url
+			}],
+			"version": .id,
+			"asset_index": .assetIndex.url,
+			"java_version": .javaVersion.majorVersion,
+			"client_url": .downloads.client.url,
+			"main_class": .mainClass,
+			"logging_config": .logging.client.file.url
+		}
+		EOF
+	)"
+
 	printf 'updating version manifest\n' >&2
 	mkdir -p "$VERSIONS_DIR"
 	curl --silent "https://piston-meta.mojang.com/mc/game/version_manifest_v2.json" | jq '{"latest": .latest, "versions": [.versions[] | {"key": .id, "value": .url}] | from_entries}' > "$VERSIONS_DIR/manifest.json"
@@ -201,7 +258,7 @@ function update_metadata (
 	printf 'updating %s meta %s\n' "$version" >&2
 	mkdir -p "$VERSIONS_DIR/$version"
 	curl --silent -o "$VERSIONS_DIR/$version/meta.json" "$(jq -r --arg version "$version" '.versions[$version]' $VERSIONS_DIR/manifest.json)"
-	meta="$(jq -c --slurpfile info info.json -f meta.jq "$VERSIONS_DIR/$version/meta.json")"
+	meta="$(jq -c --slurpfile info info.json "$meta_filter" "$VERSIONS_DIR/$version/meta.json")"
 
 	printf 'updating %s asset index...\n' "$version" >&2
 	mkdir -p "$ASSETS_DIR/indexes"