using System.Collections.Generic;
using System.IO;
using UnityEngine;
using System.Linq;

public class ProgramModel
{
    private List<RobotProgram> allPrograms = new List<RobotProgram>();
    private string savePath;

    public RobotProgram CurrentProgram { get; private set; }

    public ProgramModel()
    {
        savePath = Path.Combine(Application.persistentDataPath, "programs");
        Directory.CreateDirectory(savePath); // 저장 폴더가 없으면 생성
        LoadAllPrograms();
    }

    public bool CreateNewProgram(string userInputId)
    {
        if (string.IsNullOrEmpty(userInputId)) return false;

        string newProgramId = $"{userInputId}.job";
        Debug.Log($"{userInputId}.job 생성");

        // ID가 이미 존재하는지 확인
        if (GetAllProgramIds().Contains(newProgramId))
        {
            Debug.LogError($"프로그램 ID '{newProgramId}'가 이미 존재합니다.");
            return false;
        }

        CurrentProgram = new RobotProgram(newProgramId); // 메모리에 새 프로그램 생성

        SaveCurrentProgram();

        return true;
    }

    public bool LoadProgram(string programId)
    {
        string filePath = Path.Combine(savePath, programId + ".job");
        if (File.Exists(filePath))
        {
            string json = File.ReadAllText(filePath);
            CurrentProgram = JsonUtility.FromJson<RobotProgram>(json);
            return true;
        }
        return false;
    }

    public void SaveCurrentProgram()
    {
        if (CurrentProgram == null) return;

        string json = JsonUtility.ToJson(CurrentProgram, true);
        string filePath = Path.Combine(savePath, CurrentProgram.programId + ".job");
        File.WriteAllText(filePath, json);

        // 전체 프로그램 목록 갱신
        LoadAllPrograms();
    }

    public void AddPointToCurrentProgram(Vector3 point)
    {
        CurrentProgram.endpointPositions.Add(point);
    }

    public List<string> GetAllProgramIds()
    {
        List<string> ids = new List<string>();
        foreach (var program in allPrograms)
        {
            ids.Add(program.programId);
        }
        return ids;
    }

    private void LoadAllPrograms()
    {
        allPrograms.Clear();
        string[] files = Directory.GetFiles(savePath, "*.job");
        foreach (string file in files)
        {
            string programId = Path.GetFileNameWithoutExtension(file);
            allPrograms.Add(new RobotProgram(programId));
        }
    }
}