Add automated git release info retrieval on export

	Makes debug easier to see and handle

Add commit hash label to MainMenu
Add click-copyable tag, commit hash, and checksum to main menu
Rename VersionChecksumBox to ReleaseInfoBox
Move ReleaseInfoBox to separate scene and script
Add GIT_INFO.gd for generic project running
Add openvic2-plugin addon for handling export plugin
	Replaces GIT_INFO.gd on export

Setup build workflow to retrieve commit hash, tag, and release

1 files changed, 105 insertions, 0 deletions

diff --git a/game/addons/openvic2-plugin/ReleaseExportEditorPlugin.gd b/game/addons/openvic2-plugin/ReleaseExportEditorPlugin.gd
new file mode 100644
index 0000000..4e03788
--- /dev/null
+++ b/game/addons/openvic2-plugin/ReleaseExportEditorPlugin.gd
@@ -0,0 +1,105 @@
+extends EditorExportPlugin
+
+var _repo_hash : StringName = "0000000000000000000000000000000000000000"
+var _repo_short_hash : StringName = "0000000"
+var _repo_tag : StringName = "<tag missing>"
+var _repo_release_name : StringName =  "<release name missing>"
+
+func _get_name():
+	return "OpenVic2-ReleaseExportEditorPlugin"
+
+func _export_file(path: String, type: String, features: PackedStringArray) -> void:
+	if path != "res://src/Utility/GIT_INFO.gd": return
+	var GitInfoScript : String = ""
+	_get_commit_long()
+	_get_commit_short()
+	_get_tag()
+	_get_release_name()
+	GitInfoScript = "class_name _GIT_INFO_\nextends RefCounted\n\n"
+	GitInfoScript += "const commit_hash : StringName = &\""+ _repo_hash +"\"\n"
+	GitInfoScript += "const short_hash : StringName = &\""+ _repo_short_hash +"\"\n"
+	GitInfoScript += "const tag : StringName = &\""+ _repo_tag +"\"\n"
+	GitInfoScript += "const release_name : StringName = &\""+ _repo_release_name +"\"\n"
+	add_file(path, GitInfoScript.to_ascii_buffer(), false)
+	skip()
+
+# Based on
+# https://github.com/godotengine/godot/blob/6ef2f358c741c993b5cdc9680489e2c4f5da25cc/methods.py#L102-L133
+var _cached_hash : StringName = &""
+func _get_commit_hash() -> StringName:
+	if not _cached_hash.is_empty(): return _cached_hash
+
+	var git_hash := OS.get_environment("OPENVIC2_COMMIT")
+	if not git_hash.is_empty():
+		_cached_hash = git_hash
+		return git_hash
+
+	var git_folder := "../.git"
+
+	if FileAccess.file_exists(git_folder):
+		var module_folder := FileAccess.open(git_folder, FileAccess.READ).get_line().strip_edges()
+		if module_folder.begins_with("gitdir: "):
+			git_folder = module_folder.substr(8)
+
+	if FileAccess.file_exists(git_folder.path_join("HEAD")):
+		var head := FileAccess.open(git_folder.path_join("HEAD"), FileAccess.READ).get_line().strip_edges()
+		if head.begins_with("ref: "):
+			var ref := head.substr(5)
+			var parts := git_folder.split("/")
+			if len(parts) > 2 and parts[len(parts) - 2] == "worktrees":
+				git_folder = "/".join(parts.slice(0, len(parts) - 2))
+			head = git_folder.path_join(ref)
+			var packedrefs := git_folder.path_join("packed-refs")
+			if FileAccess.file_exists(head):
+				git_hash = FileAccess.open(head, FileAccess.READ).get_line().strip_edges()
+			elif FileAccess.file_exists(packedrefs):
+				for line in FileAccess.open(packedrefs, FileAccess.READ).get_as_text().split("\n", false):
+					if line.begins_with("#"): continue
+					var line_split := line.split(" ")
+					var line_hash := line_split[0]
+					var line_ref = line_split[1]
+					if ref == line_ref:
+						git_hash = line_hash
+						break
+		else:
+			git_hash = head
+
+	_cached_hash = git_hash
+
+	return git_hash
+
+func _try_get_tag() -> StringName:
+	var result : StringName = OS.get_environment("OPENVIC2_TAG")
+	if result.is_empty():
+		var git_output := []
+		if OS.execute("git", ["describe", "--tags", "--abbrev=0"], git_output) == -1:
+			push_warning("Could not retrieve repository tag.")
+			return &""
+		result = git_output[0].trim_suffix("\n")
+	return result
+
+func _get_commit_long():
+	var result := _get_commit_hash()
+	if not result.is_empty():
+		_repo_hash = result
+	print("Hash: " + _repo_hash)
+
+func _get_commit_short():
+	var result := _get_commit_hash().substr(0,7)
+	if not result.is_empty():
+		_repo_short_hash = result
+	print("Short Hash: " + _repo_short_hash)
+
+func _get_tag():
+	var result := _try_get_tag()
+	if not result.is_empty():
+		_repo_tag = result
+	print("Tag: " + _repo_tag)
+
+func _get_release_name():
+	var result : StringName = OS.get_environment("OPENVIC2_RELEASE")
+	if result.is_empty():
+		result = _try_get_tag()
+	if not result.is_empty():
+		_repo_release_name = result
+	print("Release Name: " + _repo_release_name)