## Economy.gd
## Manages minerals, gas, workers, and income for all players.
extends Node

const BASE_MINERAL_INCOME: int = 50
const GAS_PER_WORKER_PER_ROUND: int = 10

# Per-player economy state
var _minerals: Dictionary = {}   # player_id -> int
var _gas: Dictionary = {}        # player_id -> int
var _workers: Dictionary = {}    # player_id -> int
var _income: Dictionary = {}     # player_id -> int (cumulative bonus income)

func init_player(player_id: int, starting_minerals: int = 200, starting_workers: int = 3) -> void:
	_minerals[player_id] = starting_minerals
	_gas[player_id] = 0
	_workers[player_id] = starting_workers
	_income[player_id] = 0

## Called at end of each round to pay out income and gas.
func process_income_phase() -> void:
	for player_id in _minerals.keys():
		var mineral_gain = BASE_MINERAL_INCOME + _income[player_id]
		_minerals[player_id] += mineral_gain
		EventBus.minerals_changed.emit(player_id, _minerals[player_id])
		EventBus.income_earned.emit(player_id, mineral_gain)

		var gas_gain = _workers[player_id] * GAS_PER_WORKER_PER_ROUND
		_gas[player_id] += gas_gain
		EventBus.gas_changed.emit(player_id, _gas[player_id])

## Spend minerals. Returns false if insufficient funds.
func spend_minerals(player_id: int, amount: int) -> bool:
	if _minerals.get(player_id, 0) < amount:
		return false
	_minerals[player_id] -= amount
	EventBus.minerals_changed.emit(player_id, _minerals[player_id])
	return true

## Spend gas. Returns false if insufficient funds.
func spend_gas(player_id: int, amount: int) -> bool:
	if _gas.get(player_id, 0) < amount:
		return false
	_gas[player_id] -= amount
	EventBus.gas_changed.emit(player_id, _gas[player_id])
	return true

## Add a permanent income bonus (from sends or upgrades).
func add_income(player_id: int, bonus: int) -> void:
	_income[player_id] = _income.get(player_id, 0) + bonus

func add_worker(player_id: int, cost_minerals: int) -> bool:
	if not spend_minerals(player_id, cost_minerals):
		return false
	_workers[player_id] = _workers.get(player_id, 0) + 1
	return true

func get_minerals(player_id: int) -> int:
	return _minerals.get(player_id, 0)

func get_gas(player_id: int) -> int:
	return _gas.get(player_id, 0)

func get_workers(player_id: int) -> int:
	return _workers.get(player_id, 0)

func get_income(player_id: int) -> int:
	return BASE_MINERAL_INCOME + _income.get(player_id, 0)