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

signal action_pressed ( page_id , amount : Variant )

@onready var action_labels : Array = [$ActionControl0/Label, $ActionControl1/Label, $ActionControl2/Label, $ActionControl3/Label, $ActionControl4/Label]

var page_id: int = E.neg(1)
var current_item_id = ""

var action_values: Dictionary = {0: 0, 1: 0, 2: 0, 3: 0, 4: 0}


func set_actions(item_id: String, value: Variant, preview: Callable = Callable()) -> void:
    current_item_id = item_id
    var requests: Array = _get_distribution(value)
    var unique_requests: Array = []
    var displayed: Array = []
    var labels: Dictionary = {}
    # Prefer the largest request (including MAX) when previews or rounded
    # scientific labels coincide. Keep the request paired with its preview.
    for i in range(E.subtract(requests.size(), 1), E.neg(1), E.neg(1)):
        if E.le(requests[i], 0): continue
        var amount: Variant = (preview.call(requests[i]) if preview.is_valid() else requests[i])
        if (((not E.finite(amount)) or E.lt(amount, 1)) or E.ne(amount, E.floor_value(amount))): continue
        var text: String = _format_action_value(amount)
        if (E.contains(displayed, amount) or labels.has(text)): continue
        labels[text] = true
        unique_requests.push_front(requests[i])
        displayed.push_front(amount)
    while E.lt(unique_requests.size(), 5):
        unique_requests.append(0)
        displayed.append(0)
    _set_action_values(unique_requests, displayed)

func _get_distribution(value: Variant) -> Array:
    if (E.lt(value, 1) or (not E.finite(value))):
        return [0, 0, 0, 0, 0]
    value = E.floor_value(value)
    var distribution: Array = []
    var power: Variant = 1
    while E.lt(power, value):
        distribution.append(power)
        if E.gt(distribution.size(), 4): distribution.pop_front()
        if E.ge(power, E.of("1e27")): break
        power = E.multiply(power, 10)
    distribution.append(value)
    while E.lt(distribution.size(), 5): distribution.append(0)
    return distribution

func _set_action_values(values: Array, displayed: Array) -> void:
    for ind in range(0, 5):
        action_values[ind] = values[ind]
        # Keep the original request for execution; show the exact planned output.
        var text: String = _format_action_value(displayed[ind])
        if E.ne(action_labels[ind].text, text):
            action_labels[ind].text = text
        action_labels[ind].get_parent().get_node("TextureButton").disabled = E.le(values[ind], 0)


func _format_action_value(value: Variant) -> String:
    if ((E.lt(value, 1) or (not E.finite(value))) or E.ne(value, E.floor_value(value))):
        return ""
    return Global.format_number(value)


func _on_action_button_pressed(button_id: int) -> void:
    if E.gt(action_values.get(button_id, 0), 0):
        action_pressed.emit(page_id, action_values[button_id])