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use crate::Scalar;
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
#[repr(C)]
pub struct Config {
    pub propagation_speed: Scalar,
    pub neuron_impulse_decay: Scalar,
    pub default_action_potential: Scalar,
    pub action_potential_treshold: Scalar,
    pub receptors_excitation: Scalar,
    pub receptors_inhibition: Scalar,
    pub default_receptors: (Scalar, Scalar),
    pub synapse_inactivity_time: Scalar,
    pub synapse_reconnection_range: Option<Scalar>,
    pub synapse_overdose_receptors: Option<Scalar>,
    pub synapse_reconnection_no_loop: bool,
    pub allow_sensors_both_way_connections: bool,
    pub allow_effectors_both_way_connections: bool,
    pub only_one_outgoing_neuron_connection: bool,
    pub only_one_incoming_neuron_connection: bool,
}

impl Default for Config {
    fn default() -> Self {
        Self {
            propagation_speed: 1.0,
            neuron_impulse_decay: 1.0,
            default_action_potential: 1.0,
            action_potential_treshold: 1.0,
            receptors_excitation: 1.0,
            receptors_inhibition: 0.1,
            default_receptors: (0.5, 1.5),
            synapse_inactivity_time: 0.1,
            synapse_reconnection_range: None,
            synapse_overdose_receptors: Some(10.0),
            synapse_reconnection_no_loop: true,
            allow_sensors_both_way_connections: false,
            allow_effectors_both_way_connections: false,
            only_one_outgoing_neuron_connection: true,
            only_one_incoming_neuron_connection: false,
        }
    }
}

impl Config {
    pub fn merge(&self, other: &Self) -> Self {
        Self {
            propagation_speed: merge_scalar(self.propagation_speed, other.propagation_speed),
            neuron_impulse_decay: merge_scalar(
                self.neuron_impulse_decay,
                other.neuron_impulse_decay,
            ),
            default_action_potential: merge_scalar(
                self.default_action_potential,
                other.default_action_potential,
            ),
            action_potential_treshold: merge_scalar(
                self.action_potential_treshold,
                other.action_potential_treshold,
            ),
            receptors_excitation: merge_scalar(
                self.receptors_excitation,
                other.receptors_excitation,
            ),
            receptors_inhibition: merge_scalar(
                self.receptors_inhibition,
                other.receptors_inhibition,
            ),
            default_receptors: (
                merge_scalar(self.default_receptors.0, other.default_receptors.0),
                merge_scalar(self.default_receptors.1, other.default_receptors.1),
            ),
            synapse_inactivity_time: merge_scalar(
                self.synapse_inactivity_time,
                other.synapse_inactivity_time,
            ),
            synapse_reconnection_range: match (
                self.synapse_reconnection_range,
                other.synapse_reconnection_range,
            ) {
                (None, None) => None,
                (Some(a), None) => Some(a),
                (None, Some(b)) => Some(b),
                (Some(a), Some(b)) => Some(merge_scalar(a, b)),
            },
            synapse_overdose_receptors: match (
                self.synapse_overdose_receptors,
                other.synapse_overdose_receptors,
            ) {
                (None, None) => None,
                (Some(a), None) => Some(a),
                (None, Some(b)) => Some(b),
                (Some(a), Some(b)) => Some(merge_scalar(a, b)),
            },
            synapse_reconnection_no_loop: self.synapse_reconnection_no_loop
                || other.synapse_reconnection_no_loop,
            allow_sensors_both_way_connections: self.allow_sensors_both_way_connections
                || other.allow_sensors_both_way_connections,
            allow_effectors_both_way_connections: self.allow_effectors_both_way_connections
                || other.allow_effectors_both_way_connections,
            only_one_outgoing_neuron_connection: self.only_one_outgoing_neuron_connection
                || other.only_one_outgoing_neuron_connection,
            only_one_incoming_neuron_connection: self.only_one_incoming_neuron_connection
                || other.only_one_incoming_neuron_connection,
        }
    }
}

fn merge_scalar(a: Scalar, b: Scalar) -> Scalar {
    (a + b) * 0.5
}