using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

// Auto-installs the shooting prototype (targets + HitscanShooter) whenever the
// PortalTestDestination scene loads, so no scene/prefab edits are needed. If a
// ShootingRange is already placed in the scene by hand, the bootstrap does nothing.
public class ShootingRange : MonoBehaviour
{
    const string SceneName = "PortalTestDestination";

    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
    static void RegisterBootstrap()
    {
        SceneManager.sceneLoaded -= OnSceneLoaded;
        SceneManager.sceneLoaded += OnSceneLoaded;
    }

    static void OnSceneLoaded(Scene scene, LoadSceneMode mode)
    {
        if (scene.name != SceneName) return;
        if (FindAnyObjectByType<ShootingRange>() != null) return;

        var go = new GameObject("ShootingRange");
        SceneManager.MoveGameObjectToScene(go, scene);
        go.AddComponent<ShootingRange>();
    }

    void Awake()
    {
        if (GetComponent<HitscanShooter>() == null)
            gameObject.AddComponent<HitscanShooter>();

        var targets = SpawnTargets();
        gameObject.AddComponent<RangeIntroCinematic>().Begin(targets);
    }

    // Positions match the greybox map from SetupPortalTestDestinationScene: central street
    // along Z (spawns at z = ±14), buildings at x = ±13, crates at (-2,-4) and (2,4).
    List<ShootingTarget> SpawnTargets()
    {
        var root = new GameObject("Targets").transform;
        root.SetParent(transform, false);
        var list = new List<ShootingTarget>();

        // Static bots along the street, visible from either spawn.
        list.Add(ShootingTarget.Create(root, "Target_Street_1", new Vector3(0f, 0f, 1.5f)));
        list.Add(ShootingTarget.Create(root, "Target_Street_2", new Vector3(0f, 0f, -1.5f)));
        list.Add(ShootingTarget.Create(root, "Target_Alley_L1", new Vector3(-6f, 0f, 8f)));
        list.Add(ShootingTarget.Create(root, "Target_Alley_R1", new Vector3(6f, 0f, 8f)));
        list.Add(ShootingTarget.Create(root, "Target_Alley_L2", new Vector3(-6f, 0f, -8f)));
        list.Add(ShootingTarget.Create(root, "Target_Alley_R2", new Vector3(6f, 0f, -8f)));

        // Inside the middle buildings (visible through the street-facing doors).
        list.Add(ShootingTarget.Create(root, "Target_Building_L", new Vector3(-13f, 0f, 0f)));
        list.Add(ShootingTarget.Create(root, "Target_Building_R", new Vector3(13f, 0f, 0f)));

        // Strafing bots for tracking practice.
        list.Add(ShootingTarget.Create(root, "Target_Strafe_N", new Vector3(0f, 0f, 7f), strafeDistance: 3f));
        list.Add(ShootingTarget.Create(root, "Target_Strafe_S", new Vector3(0f, 0f, -7f), strafeDistance: 3f));
        return list;
    }
}