extends Node
class_name Owniverse

signal unlock_item(item_id: String)

var g_datetime: float = 0
var g_speed: int = 1
var g_speed_in_years = 1

var entities: Dictionary[String, OwniverseEntity] = {}

var items_to_update: Dictionary[String, float] = {}

var cumulative_amount: Dictionary[String, float] = {}
var current_amount: Dictionary[String, float] = {}

var auto_production: Array = []
var locked_entities: Array = []

#region Production

func cycle(delta: float) -> void:
    _check_locked_items()


func produce(item_id: String, amount: int) -> void:
    print("prdcng ", item_id, " ", amount)
    #if item_id == "S" or item_id == 'H':
        #entities[item_id].amount += 1
    var entity: OwniverseEntity = entities[item_id]
    
    var entity_transaction = {}
    
    for elem in entity.cost:
        if current_amount[elem] < amount * entity.cost[elem]:
            return
        if entity.cost[elem] == 0: continue
        
        entity_transaction[elem] = -amount * entity.cost[elem]

    print("→: ", entity_transaction)
    for elem in entity_transaction:
        _process_enitity(elem, amount)
    _process_enitity(entity, amount)


func automated_production(_delta: float) -> void:
    for entity_id in auto_production:
        var entity = entities[entity_id]
        var amount_to_produce = int(entity.amount * entity.product_per_year_amount * _delta)


func get_available_to_produce(item_id: String) -> float:
    #print(item_id)
    return 1_000

# add to all lists
func _process_enitity(entity: OwniverseEntity, amount: int) -> void:
    if amount == 0: return
    _count_amount(entity, amount)
    items_to_update[entity.id] = current_amount[entity.id]


func _count_amount(entity: OwniverseEntity, amount: int) -> void:
    current_amount[entity.id] += amount
    if entity.group_as != "":
        current_amount[entity.group_as] += amount
    
    if amount <= 0: return
        
    cumulative_amount[entity.id] += amount
    if entity.group_as != "":
        cumulative_amount[entity.group_as] += amount


func _check_locked_items() -> void:
    for entity:OwniverseEntity in locked_entities:
        for elem in entity.unlock:
            if cumulative_amount[elem] < entity.unlock[elem]:
                continue
            #print(entity.id, " ", elem, ":", entity.unlock[elem])
            unlock_item.emit(entity.id)
            locked_entities.erase(entity)
            return # SIC!
    
#endregion


func init_enitities() -> void:
    for entity_id in Global.OwniverseEntities:
        var entity = OwniverseEntity.new()
        entity.init_entity(Global.OwniverseEntities[entity_id])
        entities[entity_id] = entity
        
        current_amount[entity_id] = 0
        cumulative_amount[entity_id] = 0
        if entity.group_as != "":
            current_amount[entity.group_as] = 0
            cumulative_amount[entity.group_as] = 0
        
        if entity.unlock != {}:
            locked_entities.append(entity)
        
        if entity.product_per_year_type != "":
            auto_production.append(entity)


func add_time_delta(delta) -> float:
    var year_delta: float = delta * g_speed_in_years

    # all ownivewrse activity should be called here
    
    g_datetime += year_delta
    return g_datetime


func change_speed(delta: int) -> int:
    g_speed = clamp(g_speed + delta, 1, Global.SPEED_LIMIT)
    g_speed_in_years = pow(10, g_speed - 1)
    return g_speed