extends "res://addons/gut/test.gd"

const FallbackLibrary = preload("res://scripts/net/fallback_library.gd")


func test_loads_authored_line_from_default_file():
	var lib = FallbackLibrary.new()
	# The authored line is distinct from LAST_RESORT, so a match proves the file was read.
	assert_ne(lib.narrator_line(), FallbackLibrary.LAST_RESORT)
	assert_true(lib.narrator_line().length() > 0)


func test_missing_file_uses_last_resort():
	var lib = FallbackLibrary.new("res://content/fallback/does_not_exist.json")
	assert_eq(lib.narrator_line(), FallbackLibrary.LAST_RESORT)


func test_malformed_file_uses_last_resort():
	var path := "user://bad_fallback.json"
	var f := FileAccess.open(path, FileAccess.WRITE)
	f.store_string("{ this is not valid json")
	f.close()
	var lib = FallbackLibrary.new(path)
	assert_eq(lib.narrator_line(), FallbackLibrary.LAST_RESORT)


func test_empty_list_uses_last_resort():
	var path := "user://empty_fallback.json"
	var f := FileAccess.open(path, FileAccess.WRITE)
	f.store_string('{"narrator": []}')
	f.close()
	var lib = FallbackLibrary.new(path)
	assert_eq(lib.narrator_line(), FallbackLibrary.LAST_RESORT)


func test_npc_line_falls_back_to_constant_when_missing():
	var lib = FallbackLibrary.new(
		"res://content/fallback/does_not_exist.json",
		"res://content/fallback/does_not_exist.json")
	assert_eq(lib.npc_line(), FallbackLibrary.NPC_LAST_RESORT)


func test_npc_line_reads_authored_file():
	var lib = FallbackLibrary.new()  # default paths — real content
	assert_ne(lib.npc_line(), "")