extends SceneTree

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

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

func check(value: bool, message: String) -> void:
    checks += 1
    if not value:
        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
    stage.stage_page_scroller.scroll_horizontal = stage.PAGE_WIDTH
    await process_frame
    stage.owniverse.state.amount.H = 1000.0
    stage.owniverse.state.amount.RD = 2.0
    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(hydrogen.description.text == "1 000", "Pending quantities reach controls")
    check(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 = 2000.0
    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(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(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(hydrogen.description.text == root.get_node("Global").format_number(stage.owniverse.state.amount.H), "Player production publishes the new quantity")
    check(stage.owniverse.state.amount.H > 2000.0, "Production action actually executed")
    dwarf.visible = true
    stage.stage_page_scroller.scroll_horizontal = 2 * stage.PAGE_WIDTH
    await process_frame
    stage._refresh_universe_ui()
    check(dwarf.description.text == "2", "Newly visible page receives cached latest values")
    stage.owniverse.state.time.year = 1234.5
    stage._refresh_universe_ui()
    check(stage.date_time.text == "1 234.5", "Time displays tenths with thousands separator")
    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 failures == 0 else 1)