using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

namespace Kirurobo
{
    /// <summary>
    /// 基础文件面板示例
    /// </summary>
    public class FileDialogSample : MonoBehaviour
    {
        public Button openFileButton;
        public Button openMultipleFilesButton;
        public Button saveFileButton;
        public Text messageText;

        // 首次更新前调用 Start
        void Start()
        {
            openFileButton.onClick.AddListener(OpenSingleFile);
            openMultipleFilesButton.onClick.AddListener(OpenMultipleFiles);
            saveFileButton.onClick.AddListener(OpenSaveFile);
            messageText.text = "点击按钮!";
        }

        // 每帧调用 Update
        void Update()
        {

        }

        /// <summary>
        /// 打开单个文件的对话框。
        /// </summary>
        private void OpenSingleFile() {
            FilePanel.Settings settings = new FilePanel.Settings();
            settings.filters = new FilePanel.Filter[]
            {
                new FilePanel.Filter("所有文件", "*"),
                new FilePanel.Filter("图片文件 (*.png;*.jpg;*.jpeg;*.tiff;*.gif;*.tga)", "png", "jpg", "jpeg", "tiff", "gif", "tga"),
                new FilePanel.Filter("文档 (*.txt;*.rtf;*.doc;*.docx)", "txt", "rtf", "doc", "docx"),
            };
            settings.title = "打开文件!";
            settings.initialDirectory = System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyPictures);

            messageText.text = "";
            FilePanel.OpenFilePanel(settings, (files) =>
            {
                messageText.text = "打开文件\n" + string.Join("\n", files);
            });
        }

        /// <summary>
        /// 打开多个文件的对话框。
        /// </summary>
        private void OpenMultipleFiles() {
            FilePanel.Settings settings = new FilePanel.Settings();
            settings.filters = new FilePanel.Filter[]
            {
                new FilePanel.Filter("图片文件 (*.png;*.jpg;*.jpeg;*.tiff;*.gif;*.tga)", "png", "jpg", "jpeg", "tiff", "gif", "tga"),
                new FilePanel.Filter("文档 (*.txt;*.rtf;*.doc;*.docx)", "txt", "rtf", "doc", "docx"),
                new FilePanel.Filter("所有文件", "*"),
            };
            settings.flags = FilePanel.Flag.AllowMultipleSelection;
            settings.title = "打开多个文件!";
            settings.initialDirectory = System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments);

            messageText.text = "";
            FilePanel.OpenFilePanel(settings, (files) =>
            {
                messageText.text = "打开多个文件\n" + string.Join("\n", files);
            });
        }

        /// <summary>
        /// 打开保存文件对话框。
        /// </summary>
        private void OpenSaveFile() {
            FilePanel.Settings settings = new FilePanel.Settings();
            settings.filters = new FilePanel.Filter[]
            {
                new FilePanel.Filter("文本文件 (*.txt;*.log)", "txt", "log"),
                new FilePanel.Filter("图片文件 (*.png;*.jpg;*.jpeg;*.tiff;*.gif;*.tga)", "png", "jpg", "jpeg", "tiff", "gif", "tga"),
                new FilePanel.Filter("所有文件", "*"),
            };
            settings.title = "实际上不会执行保存操作";
            settings.initialFile = "Test.txt";

            messageText.text = "";
            FilePanel.SaveFilePanel(settings, (files) =>
            {
                messageText.text = "选中的文件\n" + string.Join("\n", files);
            });
        }
    }
}