extends SceneTree
const E = preload("res://world/owniverse/math/exact.gd")
const Clock = preload("res://world/owniverse/simulation_time.gd")
var checks: int = 0
var failures: int = 0

func _initialize() -> void:
    call_deferred("run")

func check(condition: bool, message: String) -> void:
    checks = E.add(checks, 1)
    if (not condition):
        failures = E.add(failures, 1)
        push_error(message)

func fixture():
    var world = load("res://world/owniverse/owniverse.gd").new()
    var global: Node = root.get_node("Global")
    for id in global.OwniverseEntities:
        var entity = load("res://world/owniverse/owniverse_entity.gd").new(global.OwniverseEntities[id])
        world.catalog.entities[id] = entity
        world.state.amount[id] = 0
        world.state.stats.total_amount[id] = 0
        if E.ne(entity.group_as, ""):
            world.state.amount[entity.group_as] = 0
            world.state.stats.total_amount[entity.group_as] = 0
    world.catalog.entities["N"].life_product = {}
    world.catalog.entities["N"].product_per_year_type = "H"
    world.catalog.entities["N"].product_per_year_amount = 10
    world.catalog.entities["N"].auto = 0
    world.state.amount.N = 1
    return world

func dispose(world) -> void:
    for entity in world.catalog.entities.values():
        entity.free()
    world.free()

func run() -> void:
    var world = fixture()
    var global: Node = root.get_node("Global")
    check(E.eq(global.CivilizationRules.size(), 44), "Load all ethical civilization stages")
    for row : Dictionary in global.CivilizationRules.values():
        check((E.eq(row.ethics.size(), 6) or E.eq(row.span, 0)), "Every ethical stage has six rules")
    world.state.amount.RD = 12
    world.state.amount["C0.2"] = 8
    world.state.binds.RD = {"C2.0": 12, "C1.9": 3}
    world.evolution.initialize_life_batches()
    check((E.eq(world.state.amount["C2.0"], 12) and E.eq(world.state.binds.RD["C2.0"], 0)), "Old space civilizations detach without loss")
    check(E.eq(world.state.binds.RD["C1.9"], 3), "Planetary civilizations retain their host")
    check(E.eq(world.state.ethics["C0.2"], {"m": 2, "l": 2, "w": 1, "d": 1, "c": 1, "b": 1}), "Migration uses equal ethics and deterministic remainder")
    check(world.state.ethics["C2.0"].values().all(func ( n ) : return E.eq(n, 2)), "Bound civilization ethics count physical population")
    var before: Dictionary = world.state.duplicate(true)
    world.evolution.initialize_life_batches()
    check(E.eq(world.state, before), "Repeated initialization preserves ethics")
    world.state.ethics["C0.2"] = {"m": 8, "l": 0, "w": 0, "d": 0, "c": 0, "b": 0}
    world.evolution.initialize_life_batches()
    check(E.eq(world.state.ethics["C0.2"].m, 8), "Existing unequal distribution is retained")
    world.state.amount["C0.2"] = 3
    world.evolution.initialize_life_batches()
    check(E.eq(world.state.ethics["C0.2"].m, 3), "Losses reduce ethics without inventing population")
    check(E.eq(root.get_node("SaveManager").validate_data({"format_version": 3, "app_version": "", "ui": {"current_page": 0}, "state": world.state}), ""), "Ethics state validates")
    var restored = fixture()
    restored.state = E.decode(bytes_to_var(var_to_bytes(E.encode(world.state))))
    restored.evolution.initialize_life_batches()
    check(E.eq(restored.state, world.state), "Save roundtrip preserves ethics and ownership")
    dispose(restored)
    dispose(world)
    world = fixture()
    world.state.amount.RD = 10
    for row : Dictionary in global.CivilizationRules["C1.9"].ethics.values():
        row.progress = "1"
        row.degradation = "0"
        row.colonization = "0"
    world.state.binds.RD = {"C1.9": 10}
    world.state.batches["C1.9"] = [{"amount": 10, "start_year": 1, "end_year": 1}]
    world.evolution.evolve_batches(world.state, 1)
    check((E.eq(world.state.amount["C2.0"], 10) and E.eq(world.state.binds.RD.get("C2.0", 0), 0)), "Space successor does not inherit planetary binding")
    dispose(world)
    var capacity = load("res://world/owniverse/civilization_state.gd")
    world = fixture()
    world.state.amount.RD = 10
    world.state.amount["C2.0"] = 8
    var budget: Dictionary = capacity.stellar_budget(world, world.state, global.CivilizationRules)
    check(E.eq(capacity.admit_transition(budget, global.CivilizationRules, "C1.9", "C2.0", 5), 2), "Growth consumes only remaining stellar capacity")
    check(E.eq(capacity.admit_transition(budget, global.CivilizationRules, "C1.9", "C2.0", 5), 0), "A reservation cannot be spent twice")
    world.state.amount["C2.0"] = 1
    budget = capacity.stellar_budget(world, world.state, global.CivilizationRules)
    check(E.eq(capacity.admit_transition(budget, global.CivilizationRules, "C2.0", "C2.1", 1), 1), "A transition reuses the source reservation")
    check(E.eq(budget.free.DwStar, 0), "C2.1 reserves ten dwarf stars")
    world.state.amount["C2.0"] = 0
    world.state.binds.SC = {"RD": 10}
    budget = capacity.stellar_budget(world, world.state, global.CivilizationRules)
    check(E.eq(budget.capacity.DwStar, 20), "Stars inside structures are counted once")
    dispose(world)

    world = fixture()
    world.state.amount.RD = 12
    world.state.amount["C2.1"] = 2
    world.state.amount["C2.0"] = 5
    world.evolution.initialize_life_batches()
    check((E.eq(world.state.amount["C2.1"], 1) and E.eq(world.state.amount["C2.0"], 2)), "Shared budget supports advanced civilizations first")
    check(E.eq(world.state.binds.RD["C1.9"], 4), "Excess cascades to supported planetary stage")
    var snapshot: Dictionary = world.state.duplicate(true)
    world.evolution.initialize_life_batches()
    check(E.eq(world.state, snapshot), "Capacity enforcement is idempotent")
    world.state.amount.RD = 0
    world.evolution.initialize_life_batches()
    check((E.eq(world.state.amount["C2.1"], 0) and E.eq(world.state.amount["C2.0"], 0)), "Vanished stars force all unsupported space civilizations down")
    check(E.eq(world.ledger.physical_amounts(world.state)["C1.9"], 7), "Forced degradation conserves civilizations")
    dispose(world)

    world = fixture()
    world.state.amount.LGW = 20
    world.state.amount.SMBH = E.of("2.0e22")
    world.state.amount["C4.2"] = 3
    world.evolution.initialize_life_batches()
    check(E.eq(world.state.amount["C4.2"], 2), "SMBH capacity uses stellar mass equivalent")
    check(E.eq(world.ledger.physical_amounts(world.state)["C1.9"], 1), "Unsupported civilization degrades through missing habitat families")
    check(E.eq(root.get_node("SaveManager").validate_data({"format_version": 3, "app_version": "", "ui": {"current_page": 0}, "state": world.state}), ""), "Capacity-limited state validates")
    dispose(world)

    world = fixture()
    world.state.amount.RD = 2
    for row : Dictionary in global.CivilizationRules["C1.9"].ethics.values():
        row.progress = "1"
        row.degradation = "0"
        row.colonization = "0"
    world.state.binds.RD = {"C1.9": 5}
    world.state.batches["C1.9"] = [{"amount": 5, "start_year": 1, "end_year": 1}]
    world.evolution.evolve_batches(world.state, 1)
    check((E.eq(world.state.amount["C2.0"], 2) and E.eq(world.state.binds.RD["C1.9"], 3)), "Unfunded transition retains the original planetary civilization")
    dispose(world)
    print(("Civilization state: %d checks, %d failures" % [checks, failures]))
    quit((0 if E.eq(failures, 0) else 1))