using Cysharp.Threading.Tasks;
using SHI.modal;
using System;
using System.Globalization;
using System.IO;
using UnityEngine;
using UnityEngine.UI;

/// <summary>
/// 샘플 장면 드라이버: 버튼 클릭으로 SHI BlockDetail 모달을 생성/표시하고,
/// StreamingAssets에서 glb/간트 JSON을 읽어 모달에 전달합니다.
/// </summary>
public class ShiPopupSample : MonoBehaviour
{
    [SerializeField]
    private GameObject blockDetailModalPrefab;

    [SerializeField]
    private Button openModalButton;

    private BlockDetailModal blockDetailModal;

    private void Start()
    {
        if (openModalButton != null)
        {
            openModalButton.onClick.AddListener(() =>
            {
                if (blockDetailModal == null && blockDetailModalPrefab != null)
                {
                    Canvas canvas = Canvas.FindFirstObjectByType<Canvas>();
                    Debug.Log($"Creating BlockDetailModal under Canvas:{canvas}");
                    blockDetailModal = Instantiate(blockDetailModalPrefab, canvas.transform).GetComponent<BlockDetailModal>();
                }
                blockDetailModal.gameObject.SetActive(true);
                SetupData().Forget();
            });
        }
    }

    [Serializable]
    public class RawScheduleSegment
    {
        public string ItemId;
        public string Start;
        public string End;
        public float Progress;
        public string Type;
    }

    [Serializable]
    public class RawGanttChartData
    {
        public RawScheduleSegment[] Segments;
    }

    /// <summary>
    /// StreamingAssets에서 샘플 간트 JSON과 모델을 읽어 모달에 적용합니다.
    /// </summary>
    private async UniTaskVoid SetupData()
    {
        if (blockDetailModal == null)
        {
            Debug.LogWarning("BlockDetailModal is not assigned.");
            return;
        }

        string sa = Application.streamingAssetsPath;
        string glbPath = Path.Combine(sa, "block.glb");
        string jsonPath = Path.Combine(sa, "sample_gantt_data.json");

        // 플랫폼에 따라 UnityWebRequest 사용이 필요할 수 있음(여기선 Editor/Standalone 가정)
        RawGanttChartData raw = null;
        try
        {
            if (File.Exists(jsonPath))
                raw = JsonUtility.FromJson<RawGanttChartData>(File.ReadAllText(jsonPath));
            else
                Debug.LogWarning($"Sample JSON not found: {jsonPath}");
        }
        catch (Exception ex)
        {
            Debug.LogError($"Failed reading JSON: {ex}");
        }

        var gantt = new GanttChartData();
        if (raw?.Segments != null)
        {
            foreach (var s in raw.Segments)
            {
                DateTime start, end;
                if (!DateTime.TryParse(s.Start, null, DateTimeStyles.AdjustToUniversal | DateTimeStyles.AssumeUniversal, out start))
                    start = DateTime.UtcNow;
                if (!DateTime.TryParse(s.End, null, DateTimeStyles.AdjustToUniversal | DateTimeStyles.AssumeUniversal, out end))
                    end = start.AddDays(1);
                gantt.Segments.Add(new ScheduleSegment
                {
                    ItemKey = s.ItemId,
                    Start = start,
                    End = end,
                    Progress = s.Progress,
                    Type = s.Type ?? string.Empty
                });
            }
        }
        Debug.Log($"Loaded blockDetailModal:{blockDetailModal} {gantt.Segments.Count} gantt segments.");
        await blockDetailModal.LoadData(glbPath, gantt);
    }
}