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

const Parameters = preload("res://world/owniverse/world_parameters.gd")
var energy_bars: Array = []
var density_indicators: Array = []
var pointers: Dictionary = {}
var trend_bars: Array = []
var warning_border: TextureRect

func _init(stage: Node) -> void:
    warning_border = stage.get_node("../Background/WarningBorder")
    var pages: Node = stage.get_node("World/PageScroller/HBoxContainer")
    for path in ["ResourcePage/ResourceHeader", "StructurePage/StructureHeader"]:
        energy_bars.append(pages.get_node(path + "/EnergyIndicator/Indicator"))
        density_indicators.append(pages.get_node(path + "/DensityIndicator"))
    pointers.Bur = pages.get_node("StarPage/StarHeader/BurnabilityIndicator/BurnabilityPointer")
    pointers.Exp = pages.get_node("StarPage/StarHeader/ExplosivenessIndicator/ExplosivenessPointer")
    pointers.Agg = pages.get_node("LifePage/LifeHeader/AggressionIndicator/AggressionPointer")
    var trends: Node = pages.get_node("LifePage/LifeHeader/TrendIndicator/HBoxContainer")
    for i in 5:
        var container: String = "CenterContainer" + (str(i + 1) if i > 0 else "")
        trend_bars.append(trends.get_node(container + "/Trend" + str(i + 1)))
    # Decorative children must not swallow clicks intended for indicator buttons.
    for header_path in ["ResourcePage/ResourceHeader", "StructurePage/StructureHeader", "StarPage/StarHeader", "LifePage/LifeHeader"]:
        for child in pages.get_node(header_path).get_children():
            if child is TextureButton: _ignore_mouse_on_children(child)

func _ignore_mouse_on_children(node: Node) -> void:
    for child in node.get_children():
        if child is Control: child.mouse_filter = Control.MOUSE_FILTER_IGNORE
        _ignore_mouse_on_children(child)

func update(world) -> void:
    var source: Dictionary = world.state
    var energy: float = E.approx(E.clamp_value(E.divide(source.energy, Parameters.INITIAL_ENERGY), 0, 1))
    for bar in energy_bars: bar.scale.x = energy
    var density_value = world.environment.stellar_environment(source).density
    var density: Dictionary = Parameters.density_display(density_value)
    warning_border.self_modulate = Parameters.density_warning_color(density_value)
    for indicator in density_indicators:
        for mode in ["Density", "DensityRip", "DensityCrunch"]:
            indicator.get_node(mode).visible = mode == density.mode
        var pointer: Control = indicator.get_node("Pointer")
        pointer.position.x = 16.0 + 288.0 * E.approx(density.position) - pointer.size.x / 2.0
        pointer.self_modulate = Color.BLACK if density.mode == "DensityCrunch" else Color.WHITE
    for key in pointers:
        var pointer: Control = pointers[key]
        pointer.position.x = 16.0 * E.approx(E.clamp_value(Parameters.value(source, key), 1, 19)) - pointer.size.x / 2.0
    for i in trend_bars.size():
        var bar: Control = trend_bars[i]
        bar.pivot_offset = Vector2(0.0, bar.size.y)
        bar.scale.y = E.approx(E.clamp_value(source.get("trends", {}).get(Parameters.TRENDS[i], 0), 0, 1))