using System.Collections.Generic;
using Game.Features.Players.Contracts;
using Game.Features.Players.Domain;
using Game.Features.Players.Domain.Movement;
using Game.Godot;
using Game.Godot.Extensions;
using Game.Godot.Mappings;
using Godot;

namespace Game.Features.Players.Godot;

public partial class PlayerController : Node3D, IMovementModeSwitcher
{
    [Export] public CharacterBody3D Body;
    [Export] public CollisionShape3D Collision;
    [Export] public Camera3D Camera;

    [Export] public float MoveSpeed = 4.0f;
    [Export] public float JumpVelocity = 4.5f;
    [Export] public float NoclipFlySpeed = 8.0f;
    [Export] public float MouseSensitivity = 0.003f;
    [Export] public float MaxLookAngleDegrees = 89.0f;

    private Dictionary<MovementMode, IMovementStrategy> _movementStrategies;
    private IMovementStrategy _currentMovementStrategy;
    private PlayerLook _look;

    public MovementMode ActiveMovementMode { get; private set; } = MovementMode.Ground;

    public void SetMovementMode(MovementMode movementMode)
    {
        ActiveMovementMode = movementMode;
        _currentMovementStrategy = _movementStrategies[movementMode];
        Collision.Disabled = movementMode == MovementMode.Noclip;
    }

    public override void _Ready()
    {
        this.AssertRequiredExports();

        _look = new PlayerLook(MouseSensitivity, MaxLookAngleDegrees);
        
        float gravity = (float)ProjectSettings.GetSetting(ProjectSetting.Gravity.SettingPath());
        _movementStrategies = new Dictionary<MovementMode, IMovementStrategy>
        {
            [MovementMode.Ground] = new GroundMovement(MoveSpeed, JumpVelocity, gravity),
            [MovementMode.Noclip] = new NoclipMovement(NoclipFlySpeed)
        };
        _currentMovementStrategy = _movementStrategies[ActiveMovementMode];
    }

    public override void _UnhandledInput(InputEvent @event)
    {
        if (@event is not InputEventMouseMotion mouseMotion || !MouseCapture.IsCaptured) return;

        Body.RotateY(_look.CalculateYawDelta(mouseMotion.Relative.X));
        _look.UpdatePitch(mouseMotion.Relative.Y);
        Camera.Rotation = new Vector3(_look.Pitch, 0f, 0f);
    }

    public override void _PhysicsProcess(double delta)
    {
        Vector2 inputDirection = Input.GetVector(
            InputAction.MoveLeft.ActionName(),
            InputAction.MoveRight.ActionName(),
            InputAction.MoveForward.ActionName(),
            InputAction.MoveBack.ActionName()
        );

        MovementInput input = new(
            Right: Body.Transform.Basis.X,
            Back: Body.Transform.Basis.Z,
            Direction: inputDirection,
            IsOnFloor: Body.IsOnFloor(),
            JumpPressed: Input.IsActionJustPressed(InputAction.Jump.ActionName()),
            AscendPressed: Input.IsActionPressed(InputAction.Jump.ActionName()),
            DescendPressed: Input.IsActionPressed(InputAction.MoveDown.ActionName()),
            Delta: (float)delta
        );

        Body.Velocity = _currentMovementStrategy.CalculateVelocity(Body.Velocity, input);
        Body.MoveAndSlide();
    }
}