// index.uts

// 引用android api
import { UTSAndroid } from "io.dcloud.uts";
import { ActivityCompat } from "androidx.core.app";
import AlertDialog from 'android.app.AlertDialog';
import { Context, Intent, ContentUris, ContentResolver } from "android.content";
import Uri from "android.net.Uri";
import FileUtils from "android.os.FileUtils";
import { DocumentsContract, MediaStore } from "android.provider";
import { File, FileOutputStream } from "java.io";
import Activity from "android.app.Activity";
import Cursor from "android.database.Cursor";
import { Build, Environment, Bundle } from "android.os";
import DialogInterface from 'android.content.DialogInterface';
import JSONObject from 'com.alibaba.fastjson.JSONObject';

class FileActivity extends Activity {

	constructor() {
		super();
	}
	override onCreate(savedInstanceState ?: Bundle) : void {
		super.onCreate(savedInstanceState)
		var dataUri = this.getIntent().getData()
		transUriStart(this, dataUri)

	}
	// override  onResume() {
	//         super.onResume()

	// var dataUri=this.getIntent().getData()
	// console.log(dataUri.toString())
	// }
}

type InfoOptions = {
	scope ?: string,
	permission ?: boolean,
	mimetype ?: string,
	action ?: string,
	success ?: (res : object) => void
	fail ?: (res : object) => void
	complete ?: (res : object) => void
}


const FILE_SELECT_REQUEST_CODE = 110
export default function fileSelect(options : InfoOptions) {

	let permissionList = ["android.permission.READ_EXTERNAL_STORAGE"]
	const permission = options.permission;
	if (permission != null && permission) {
		UTSAndroid.gotoSystemPermissionActivity(UTSAndroid.getUniActivity()!, permissionList)
		return;
	}
	// 请求权限 
	UTSAndroid.requestSystemPermission(UTSAndroid.getUniActivity()!, permissionList, function (allRight : boolean, grantedList : string[]) {
		if (allRight) {
			// 用户同意了全部权限
			if (options.action != null&&options.action=="openWithFile") {
				 let prefs = UTSAndroid.getUniActivity()?.getSharedPreferences("lemonjkReceive",Context.MODE_PRIVATE)
				 let res  = prefs?.getString("receiveFromOtherApp","")
				 if(res!=null&&res!=''){ 
					 options.success?.(JSONObject.parse(res)) 
					 options.complete?.(JSONObject.parse(res))
				 }else{
					 const res2 = {
					 	code: "1002",
					 	errMsg: 'fileselect:fail',
					 	detail: "文件不存在"
					 }
					 options.fail?.(res2) 
					 options.complete?.(res2)
				 }
			} 
			else if(options.action=='fk'){
				let fuck_intent = new Intent(UTSAndroid.getUniActivity(), FileActivity().javaClass);
			}
			else {
				fileSelectStart(options);
			}

		} else {
			// 用户仅同意了 grantedList中的权限
			options.fail?.({
				code: "1001",
				errMsg: 'fileselect:fail',
				detail: "未授权文件读取权限"
			})
		}
	}, function (doNotAskAgain : boolean, grantedList : string[]) {
		// 用户拒绝了部分权限，仅允许了grantedList中的权限
		// if (doNotAskAgain) {
		// 	// 用户拒绝了权限，并且选择不再询问 
		// }
		options.fail?.({
			code: "1001",
			errMsg: 'fileselect:fail',
			detail: "未授权文件读取权限"
		})
	})
}
/**
	* 用户输入对话框监听器
	*/
class DialogListener extends DialogInterface.OnClickListener {

	callback : () => void

	constructor(cb : () => void) {
		super();
		this.callback = cb;
	}

	override onClick(_dialog : DialogInterface, _arg1 : Int) : void {
		// //数据获取

		// let input = this.inputET.getText().toString()
		this.callback();
		// Toast.makeText(UTSAndroid.getUniActivity(), input,
		// 	Toast.LENGTH_LONG).show();

	}
}


function transUriStart(context : Context, myUri ?: Uri) {
	let fileActivity = context as FileActivity;
	if (myUri != null) {
		// console.log(getRealPathFromURI(context, myUri))
		const newFile = new File(getRealPathFromURI(context, myUri));
		if (newFile.exists()) {
			let filePath = newFile.toString();
			let fileName = newFile.getName();
			let fileSize = newFile.length();
			const extIdx = fileName.lastIndexOf(".");
			let fileExt = extIdx != -1 ? fileName.substring(extIdx + 1) : ""
			const res = {
				code: "0",
				filePath: filePath,
				fileName: fileName,
				fileSize: fileSize,
				fileExt: fileExt,
				rawPath:myUri.toString(),
				errMsg: 'fileselect:ok',
				detail: "文件读取成功"
			}
			let editor=context.getSharedPreferences("lemonjkReceive",Context.MODE_PRIVATE).edit();
			editor.putString("receiveFromOtherApp", JSON.stringify(res))
			editor.apply();
			new AlertDialog.Builder(fileActivity)
				.setTitle("文件打开成功")
				.setMessage("[" + fileName + "]" + "已保存到应用中")
				.setPositiveButton("确定", new DialogListener(() => {
					fileActivity.finish();
				})).show();
		} else {
			const res2 = {
				code: "1002",
				errMsg: 'fileselect:fail',
				detail: "文件不存在"
			}
			new AlertDialog.Builder(fileActivity)
				.setTitle("文件打开失败")
				.setMessage("文件不存在")
				.setPositiveButton("确定", new DialogListener(() => {
					fileActivity.finish();
				})).show();
			console.log(res2)
		}
	} else {
		const res3 = {
			code: "1005",
			errMsg: 'fileselect:fail',
			detail: "文件选取出错:myUri为null"
		}
		new AlertDialog.Builder(fileActivity)
			.setTitle("文件打开失败")
			.setMessage("文件不存在")
			.setPositiveButton("确定", new DialogListener(() => {
				fileActivity.finish();
			})).show();
		console.log(res3)
	}
}
function fileSelectStart(options : InfoOptions) {
	const context = UTSAndroid.getAppContext();
	if (context != null) {
		const intent = new Intent(Intent.ACTION_GET_CONTENT);
		if (options.scope != null) {
			let strPath = options.scope
			strPath = strPath?.replaceAll("/", "%2F");
			let uriByScope : Uri = Uri.parse("content://com.android.externalstorage.documents/document/primary%3A" + strPath);
			intent.putExtra(DocumentsContract.EXTRA_INITIAL_URI, uriByScope);
		}
		var mimeType = "*/*";
		const mimetypeTemp = options.mimetype;
		if (mimetypeTemp != null) {
			mimeType = mimetypeTemp;
		}
		intent.setType(mimeType);
		intent.addCategory(Intent.CATEGORY_OPENABLE);
		UTSAndroid.getUniActivity()?.startActivityForResult(intent, FILE_SELECT_REQUEST_CODE);
		UTSAndroid.onAppActivityResult((requestCode : Int, resultCode : Int, data ?: Intent) => {
			UTSAndroid.offAppActivityResult(null);
			if (requestCode == FILE_SELECT_REQUEST_CODE && resultCode == Activity.RESULT_OK && data != null) {
				const fileUri = data.getData();
				// console.log(fileUri?.toString()); 
				if (fileUri != null) {
					let path = getRealPathFromURI(context, fileUri)
					const file = new File(path)
					if (file.exists()) {
						let upLoadFilePath = file.toString();
						let upLoadFileName = file.getName();
						let fileSize = file.length();
						const extIdx = upLoadFileName.lastIndexOf(".");
						let fileExt = extIdx != -1 ? upLoadFileName.substring(extIdx + 1) : ""
						const res = {
							code: "0",
							filePath: upLoadFilePath,
							fileName: upLoadFileName,
							fileSize: fileSize,
							fileExt: fileExt,
							errMsg: 'fileselect:ok',
							detail: "文件读取成功"
						}
						options.success?.(res)
						options.complete?.(res)
					} else {
						const res2 = {
							code: "1002",
							errMsg: 'fileselect:fail',
							detail: "文件不存在"
						}
						options.fail?.(res2)
						options.complete?.(res2)
					}
				}
			}
		});
	} else {
		const res3 = {
			code: "1005",
			errMsg: 'fileselect:fail',
			detail: "文件选取出错:context为null"
		}
		options.fail?.(res3)
		options.complete?.(res3)
	}
}

function getRealPathFromURI(context : Context, uri : Uri) : string {
	const isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
	//4.4以下的版本：不支持
	//大于4.4	
	// DocumentProvider 
	if (isKitKat) {
		if (DocumentsContract.isDocumentUri(context, uri)) {
			if (isExternalStorageDocument(uri)) {
				console.log("isExternalStorageDocument")
				return saveFileFromUri(context, uri)
			}
			// DownloadsProvider
			else if (isDownloadsDocument(uri)) {
				console.log("isDownloadsDocument")
				return saveFileFromUri(context, uri)
			}
			// MediaProvider 
			else if (isMediaDocument(uri)) {
				console.log("isMediaDocument")
				return saveFileFromUri(context, uri)
			}
		}
		//其他 content
		else if ("content".equals(uri.getScheme())) {
			// return getDataColumn(context, uri, null, null);
			console.log("content")
			return saveFileFromUri(context, uri)
		}
		//其他 file
		else if ("file".equals(uri.getScheme())) {
			console.log("file")
			return uri.getPath() as string;
		}
	}
	return ""
}
function isExternalStorageDocument(uri : Uri) : boolean {
	return "com.android.externalstorage.documents".equals(uri.getAuthority());
}

function isDownloadsDocument(uri : Uri) : boolean {
	return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
function isMediaDocument(uri : Uri) : boolean {
	return "com.android.providers.media.documents".equals(uri.getAuthority());
}

// function getDataColumn(context : Context, uri : Uri, selection : string | null, selectionArgs : String[] | null) : string {
// 	let column = "_data";
// 	let projection = arrayOf<string>(column)
// 	let cursor : Cursor | null = null;
// 	const _selectionArgs = selectionArgs != null ? selectionArgs.toTypedArray() : null

// 	try {

// 		cursor = context.getContentResolver().query(uri, projection, selection, _selectionArgs, null);

// 		if (cursor != null && cursor.moveToFirst()) {
// 			const column_index = cursor.getColumnIndexOrThrow(column);
// 			return cursor.getString(column_index);
// 		}
// 	} catch (e) {
// 		console.log(e);
// 	} finally {
// 		if (cursor != null) {
// 			cursor.close();
// 		}
// 	}
// 	return "";
// }
function getFileName(context : Context, uri : Uri) : string {
	let projection = arrayOf(MediaStore.Images.ImageColumns.DISPLAY_NAME)
	let cursor = context.getContentResolver().query(uri, projection, null, null, null)
	try {
		if (cursor != null && cursor.moveToFirst()) {
			let name_col_index = cursor.getColumnIndex(projection[0])
			return cursor.getString(name_col_index)
		}
	} catch (e) {
		console.log(e);
	} finally {
		cursor?.close()
	}
	return ""
}
function saveFileFromUri(context : Context, uri : Uri) : string {
	let file : File;
	const contentResolver : ContentResolver = context.getContentResolver();
	const cursor : Cursor | null = contentResolver.query(uri, null, null, null, null);
	if (cursor != null && cursor.moveToFirst()) {
		const displayName = getFileName(context, uri)
		try {
			const is = contentResolver.openInputStream(uri);
			if (is != null) {
				const file1 : File = new File(context.getExternalCacheDir()?.getAbsolutePath() + "/" + System.currentTimeMillis());
				if (!file1.exists()) {
					file1.mkdir();
				}
				const cache : File = new File(file1.getPath(), displayName);
				const fos = new FileOutputStream(cache);
				FileUtils.copy(is, fos);
				file = cache;
				fos.close();
				is.close();
				return file.getAbsolutePath();
			}
		} catch (e) {
			console.log(e);
		}
	}
	return ""
}