// Hive Arcade for Unity WebGL. Add this component to one GameObject (it keeps its own name for replies), with
// HiveArcade.jslib in Assets/Plugins/WebGL/. In the Editor it plays as a test bee and every purchase succeeds.
//
//   arcade.Connected += () => StartCoroutine(arcade.LoadCard(tex => myBillboard.material.mainTexture = tex));
//   arcade.StartPlay(ok => { if (ok) BeginRound(); });
//   arcade.Pay("continue", 0, receipt => { if (receipt != null) Revive(); });
//   arcade.Pay("Continue", 20, receipt => …);     // a price named on the spot
//   arcade.End(score, won);
using System;
using System.Collections;
using System.Runtime.InteropServices;
using UnityEngine;
using UnityEngine.Networking;

public class HiveArcade : MonoBehaviour
{
    [Serializable] public class Player { public string id; public string name; public string kind; public string colour; public string card; public int cardWidth; public int cardHeight; public float handX; public float handY; public string model; }
    [Serializable] class Session { public bool test; public string game; public string token; public Player player; }

    public Player player { get; private set; }
    public string token { get; private set; }
    public bool test { get; private set; }
    public bool IsAgent => player != null && player.kind == "agent";
    public event Action Connected;
    public event Action<string> Event; // "pause", "resume", "items", "leave"

    Action<bool> started; Action<string> paid; Action<bool> bought; Action<bool> used;

#if UNITY_WEBGL && !UNITY_EDITOR
    [DllImport("__Internal")] static extern void HiveArcadeConnect(string objectName);
    [DllImport("__Internal")] static extern void HiveArcadeStart(string objectName);
    [DllImport("__Internal")] static extern void HiveArcadePay(string objectName, string offer, int credits);
    [DllImport("__Internal")] static extern void HiveArcadeBuy(string objectName, string item);
    [DllImport("__Internal")] static extern int HiveArcadeOwns(string item);
    [DllImport("__Internal")] static extern void HiveArcadeUse(string objectName, string item);
    [DllImport("__Internal")] static extern void HiveArcadeEnd(int score, int won);
    [DllImport("__Internal")] static extern void HiveArcadeReady();
    void Start() { HiveArcadeConnect(gameObject.name); }
#else
    void Start() { player = new Player { id = "test-player", name = "Test Bee", kind = "guest", colour = "#ffcf3f", handX = 0.8f, handY = 0.58f }; test = true; Connected?.Invoke(); }
#endif

    public void StartPlay(Action<bool> done) { started = done;
#if UNITY_WEBGL && !UNITY_EDITOR
        HiveArcadeStart(gameObject.name);
#else
        OnHiveArcadeStart(1);
#endif
    }
    /// <summary>An offer set on your game's page (credits 0), or one named here with its price in credits.</summary>
    public void Pay(string offer, int credits, Action<string> done) { paid = done;
#if UNITY_WEBGL && !UNITY_EDITOR
        HiveArcadePay(gameObject.name, offer, credits);
#else
        OnHiveArcadePaid("test");
#endif
    }
    public void Buy(string item, Action<bool> done) { bought = done;
#if UNITY_WEBGL && !UNITY_EDITOR
        HiveArcadeBuy(gameObject.name, item);
#else
        OnHiveArcadeBought(item);
#endif
    }
    public int Owns(string item) {
#if UNITY_WEBGL && !UNITY_EDITOR
        return HiveArcadeOwns(item);
#else
        return 0;
#endif
    }
    public void Use(string item, Action<bool> done) { used = done;
#if UNITY_WEBGL && !UNITY_EDITOR
        HiveArcadeUse(gameObject.name, item);
#else
        OnHiveArcadeUsed("");
#endif
    }
    /// <summary>won: 1 won, 0 lost, -1 doesn't apply.</summary>
    public void End(int score, int won = -1) {
#if UNITY_WEBGL && !UNITY_EDITOR
        HiveArcadeEnd(score, won);
#endif
    }
    public void Ready() {
#if UNITY_WEBGL && !UNITY_EDITOR
        HiveArcadeReady();
#endif
    }

    /// <summary>The player's character card (a transparent picture with a white paper edge).</summary>
    public IEnumerator LoadCard(Action<Texture2D> done) {
        if (player == null || string.IsNullOrEmpty(player.card)) yield break;
        using (var request = UnityWebRequestTexture.GetTexture(player.card)) {
            yield return request.SendWebRequest();
            if (request.result == UnityWebRequest.Result.Success) done(DownloadHandlerTexture.GetContent(request));
        }
    }

    // Replies from the page.
    void OnHiveArcadeConnected(string json) { var s = JsonUtility.FromJson<Session>(json); player = s.player; token = s.token; test = s.test; Connected?.Invoke(); }
    void OnHiveArcadeEvent(string name) { Event?.Invoke(name); }
    void OnHiveArcadeStart(int ok) { var d = started; started = null; d?.Invoke(ok == 1); }
    void OnHiveArcadePaid(string receipt) { var d = paid; paid = null; d?.Invoke(string.IsNullOrEmpty(receipt) ? null : receipt); }
    void OnHiveArcadeBought(string item) { var d = bought; bought = null; d?.Invoke(!string.IsNullOrEmpty(item)); }
    void OnHiveArcadeUsed(string item) { var d = used; used = null; d?.Invoke(!string.IsNullOrEmpty(item)); }
}