extends SceneTree
const E = preload("res://world/owniverse/math/exact.gd")

var checks: int = 0
var failures: int = 0

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

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

func run() -> void:
    var scene = load("res://world/world.tscn").instantiate()
    var stage = scene.get_node("Stage")
    stage.owniverse.free()
    stage.set_script(load("res://tests/fixtures/ui_stage.gd"))
    root.add_child(scene)
    await process_frame
    await process_frame
    check(stage.effects_player.stream == null, "Startup does not play a UI sound")
    stage.stage_page_scroller.scroll_horizontal = stage.PAGE_WIDTH
    await process_frame
    stage.owniverse.state.amount.H = 1000
    stage.owniverse.state.amount.RD = 2
    stage.owniverse.presentation.refresh(stage.owniverse.state, stage.owniverse.catalog)
    stage.set_owniverse_item_value()
    var hydrogen = stage.owniverse_items.H
    var dwarf = stage.owniverse_items.RD
    check(E.eq(hydrogen.description.text, "1 000"), "Pending quantities reach controls")
    check(E.eq(dwarf.description.text, "2"), "Other page receives its current quantity")
    check(stage.owniverse.presentation.pending_amounts.is_empty(), "Published queue is consumed by Stage")
    stage.owniverse.presentation.deferred_updates = true
    stage.owniverse.state.amount.H = 2000
    stage.owniverse.presentation.refresh(stage.owniverse.state, stage.owniverse.catalog)
    check((stage.owniverse.presentation.dirty and stage.owniverse.presentation.pending_amounts.is_empty()), "Deferred refresh marks dirty without republishing")
    stage.set_owniverse_item_value()
    check(E.eq(hydrogen.description.text, "1 000"), "Labels retain last published quantity")
    stage.owniverse.presentation.refresh(stage.owniverse.state, stage.owniverse.catalog, true)
    stage.set_owniverse_item_value()
    check((E.eq(hydrogen.description.text, "2 000") and (not stage.owniverse.presentation.dirty)), "Forced refresh publishes latest state")
    stage.owniverse.presentation.deferred_updates = false
    stage.item_activated(hydrogen)
    stage.set_owniverse_item_value()
    check(E.eq(hydrogen.description.text, root.get_node("Global").format_number(stage.owniverse.state.amount.H)), "Player production publishes the new quantity")
    check(E.gt(stage.owniverse.state.amount.H, 2000), "Production action actually executed")
    dwarf.visible = true
    stage.stage_page_scroller.scroll_horizontal = E.multiply(2, stage.PAGE_WIDTH)
    await process_frame
    stage._refresh_universe_ui()
    check(E.eq(dwarf.description.text, "2"), "Newly visible page receives cached latest values")
    stage.owniverse.state.time.year = E.of("1234.5")
    stage._refresh_universe_ui()
    check(E.eq(stage.date_time.text, "1 234.5"), "Time displays tenths with thousands separator")
    stage.effects_player.set_enabled(true)
    stage.owniverse.speed = 1
    stage._change_speed(1)
    check(stage.effects_player.stream == stage.effects_player._effects.time_plus, "Increasing speed plays its effect")
    stage._change_speed(-1)
    check(stage.effects_player.stream == stage.effects_player._effects.time_minus, "Decreasing speed plays its effect")
    stage._on_topmenu_button_pressed("MainMenu")
    check(stage.effects_player.stream == stage.effects_player._effects.window_open, "Opening a window plays its effect")
    stage._on_topmenu_button_pressed("World")
    check(stage.effects_player.stream == stage.effects_player._effects.window_close, "Closing a window plays its effect")
    stage.indicator_elapsed = 1.0
    stage.active_actions_elapsed = 1.0
    stage.tick_ui(0.0)
    var refreshes: int = stage.actions_refreshes
    stage.date_time.text = "unchanged"
    stage.active_actions_elapsed = 1.0
    stage.tick_ui(0.0)
    check(stage.actions_refreshes == refreshes, "Idle UI does not recalculate production limits")
    check(stage.date_time.text == "unchanged", "Idle UI does not reformat the clock")
    stage.owniverse.state.amount.H = 3456
    stage.owniverse.presentation.refresh(stage.owniverse.state, stage.owniverse.catalog)
    stage.tick_ui(0.0)
    check(hydrogen.description.text == "3 456", "A manual publication updates idle UI")
    check(stage.actions_refreshes == refreshes + 1, "A publication invalidates production limits")
    stage.active_actions_dirty = true
    stage.tick_ui(0.0)
    check(stage.actions_refreshes == refreshes + 2, "Selection invalidation refreshes limits immediately")
    var old_pointer: float = stage.world_indicators.pointers.Agg.position.x
    stage.owniverse.environment.modify_world_parameter("Agg", 1)
    stage.indicator_elapsed = 1.0
    stage.tick_ui(0.0)
    check(stage.world_indicators.pointers.Agg.position.x != old_pointer, "World parameter actions invalidate indicators")
    for entity in stage.owniverse.catalog.entities.values(): entity.free()
    stage.owniverse.free()
    scene.free()
    print(("UI updates: %d checks, %d failures" % [checks, failures]))
    quit((0 if E.eq(failures, 0) else 1))