extends SceneTree

# Usage:
#   godot --headless --path demo --script scripts/export_tb_config.gd -- OUT_DIR
#
# Writes a complete TrenchBroom game config to OUT_DIR:
#   OUT_DIR/GameConfig.cfg   — game definition (name, formats, texture dirs)
#   OUT_DIR/FuncGodot.fgd    — entity definitions, generated from
#                              res://data/fgd/brogue_fgd.tres via
#                              FuncGodotFGDFile.build_class_text().
#
# Skips the Inspector's "Export FGD" button entirely. Safe to re-run after
# any change to brogue_fgd.tres or entity resources under data/entities/.

const GAME_CONFIG := """{
\t\"version\": 9,
\t\"name\": \"brogue-genesis\",
\t\"icon\": \"icon.png\",
\t\"fileformats\": [
\t\t{ \"format\": \"Valve\", \"initialmap\": \"initial_valve.map\" },
\t\t{ \"format\": \"Standard\", \"initialmap\": \"initial_standard.map\" }
\t],
\t\"filesystem\": {
\t\t\"searchpath\": \".\",
\t\t\"packageformat\": { \"extension\": \".zip\", \"format\": \"zip\" }
\t},
\t\"materials\": {
\t\t\"root\": \"textures\",
\t\t\"extensions\": [\".bmp\", \".jpeg\", \".jpg\", \".png\", \".tga\", \".webp\"],
\t\t\"excludes\": [ \"*_albedo\", \"*_ao\", \"*_emission\", \"*_height\", \"*_metallic\", \"*_normal\", \"*_orm\", \"*_roughness\", \"*_sss\" ],
\t\t\"palette\": \"textures/palette.lmp\",
\t\t\"attribute\": \"wad\"
\t},
\t\"entities\": {
\t\t\"definitions\": [ \"FuncGodot.fgd\" ],
\t\t\"defaultcolor\": \"0.6 0.6 0.6 1.0\",
\t\t\"scale\": 32
\t},
\t\"tags\": {
\t\t\"brush\": [],
\t\t\"brushface\": [
\t\t\t{ \"name\": \"Clip\", \"attribs\": [ \"transparent\" ], \"match\": \"material\", \"pattern\": \"clip\" },
\t\t\t{ \"name\": \"Skip\", \"attribs\": [ \"transparent\" ], \"match\": \"material\", \"pattern\": \"skip\" },
\t\t\t{ \"name\": \"Origin\", \"attribs\": [ \"transparent\" ], \"match\": \"material\", \"pattern\": \"origin\" }
\t\t]
\t},
\t\"faceattribs\": {
\t\t\"defaults\": { \"scale\": [1.0, 1.0] },
\t\t\"contentflags\": [],
\t\t\"surfaceflags\": []
\t}
}
"""

func _init() -> void:
	var args := OS.get_cmdline_user_args()
	if args.size() != 1:
		push_error("usage: -- OUT_DIR")
		quit(1)
		return
	var out_dir: String = args[0]

	if not DirAccess.dir_exists_absolute(out_dir):
		if DirAccess.make_dir_recursive_absolute(out_dir) != OK:
			push_error("failed to create %s" % out_dir)
			quit(1)
			return

	var cfg_path := out_dir.path_join("GameConfig.cfg")
	var cfg_file := FileAccess.open(cfg_path, FileAccess.WRITE)
	if cfg_file == null:
		push_error("cannot open %s for write" % cfg_path)
		quit(1)
		return
	cfg_file.store_string(GAME_CONFIG)
	cfg_file.close()

	var fgd: Resource = load("res://data/fgd/brogue_fgd.tres")
	if fgd == null:
		push_error("failed to load res://data/fgd/brogue_fgd.tres")
		quit(1)
		return

	var fgd_text: String = fgd.build_class_text(1)  # 1 == TRENCHBROOM
	var fgd_path := out_dir.path_join("FuncGodot.fgd")
	var fgd_file := FileAccess.open(fgd_path, FileAccess.WRITE)
	if fgd_file == null:
		push_error("cannot open %s for write" % fgd_path)
		quit(1)
		return
	fgd_file.store_string(fgd_text)
	fgd_file.close()

	print("synced TrenchBroom config to %s" % out_dir)
	print("  GameConfig.cfg  %d bytes" % GAME_CONFIG.length())
	print("  FuncGodot.fgd   %d bytes" % fgd_text.length())
	quit(0)