import {ChineseTextRecognizerOptions,JapaneseTextRecognizerOptions,TextRecognizer,VisionImage,TextBlock,Text} from "MLKit"
import * as UIKit from "UIKit"
import { UIAlertController , UIAlertAction , UITextField,UIImage } from "UIKit"
import { UTSiOS } from "DCloudUTSFoundation"
import {String} from "Swift"
import { PHPhotoLibrary } from "Photos"
import { CGPoint , CGRect } from 'CoreFoundation';


/**
* 从相册/相机中选取图片进行识别
* @param callback {(string[],string[])=>{}} 回调参数:第一个是识别的文本数组,第二个是源数据{boundingBox:[x,y,width,height],text:elementText}[]字符串,需要JSON.pare,携带了坐标等详细资料
* @param language {string} 需要识别的语言 zh中文,ja日文
*/
export function chooseImageBuilder(callback:(str:string[],source:string[])=>void,langs:string|null){
	// 置信度
	let zxd = 0.50
	let local = 'zh'
	if(langs=='ja'){
		local = 'ja'
	}
	uni.chooseImage({
		count: 1,
		success:(evt : ChooseImageSuccess)=> {
			uni.showLoading({title:'...',mask:true})
			let chineseOptions = new ChineseTextRecognizerOptions()
			
			let chineseTextRecognizer = TextRecognizer.textRecognizer(options=chineseOptions)
			if(local == 'ja'){
				chineseTextRecognizer = TextRecognizer.textRecognizer(options=new JapaneseTextRecognizerOptions())
			}
			if (evt.tempFilePaths.length > 0) {
				let imgs = evt.tempFilePaths[0] as string;
				try {
					let realImgPath = UTSiOS.convert2AbsFullPath(imgs)
					
					let img = new UIImage(contentsOfFile = realImgPath);
					if(img!=null){
						let image = new VisionImage(image = img!); 
						chineseTextRecognizer.process(image as VisionImage,completion=(TextList,error)=>{
							if(error!=null||TextList==null){
								uni.hideLoading()
								uni.showToast({title:"失败",icon:'none'})
								return;
							}
							let str = [] as string[]
							let sour = [] as string[]
							for(block in TextList!.blocks){
								let lines = block.lines
								if(lines!=null){
									for(line in lines) {
										let elements = line.elements
										
										if(elements!=null){
											let texts = ''
											for(element in elements) {
											    let elementText = element.text;
												let rect = element.frame as CGRect
												let elementFrame = [rect.origin.x,rect.origin.y,rect.size.width,rect.size.height] as number[]
												sour.push(JSON.stringify({boundingBox:elementFrame,text:elementText})!)
												texts+=elementText
											}
											if(texts!=''){
												str.push(texts)
											}
										}
									    
									}
								}
								
							}
							uni.hideLoading()
							callback(str as string[],sour)
						})
						
					}
					
				} catch (e) {
					console.warn("图片选择失败")
					uni.hideLoading()
					callback([] as string[],[] as string[])
					
				}
			}
		},
		fail() {
			console.warn("图片选择失败")
			uni.showToast({title:"图片选择失败",icon:'none'})
			callback([] as string[],[] as string[])
		}
	})
	
}
/**
* 从相册/相机中选取图片进行识别
* @param url {string} 图片地址.
* @param callback {(string[],string[])=>{}} 回调参数:第一个是识别的文本数组,第二个是源数据{boundingBox:[x,y,width,height],text:elementText}[]字符串,需要JSON.pare,携带了坐标等详细资料
* @param language {string} 需要识别的语言 zh中文,ja日文
*/
export function  downloadUrlImageBuilder(url : string,callback:(str:string[],source:string[])=>void,langs:string|null){
	uni.showLoading({title:'...',mask:true})
	let local = langs == null?'zh':(langs! as string)
	uni.downloadFile({
		url,
		success:(evt)=> {
			let chineseOptions = new ChineseTextRecognizerOptions()
			let chineseTextRecognizer = TextRecognizer.textRecognizer(options=chineseOptions)
			
			if(local == 'ja'){
				chineseTextRecognizer = TextRecognizer.textRecognizer(options=new JapaneseTextRecognizerOptions())
			}
			let imgs = evt.tempFilePath as string;
			
			try {
				let realImgPath = UTSiOS.convert2AbsFullPath(imgs)
				let img = new UIImage(contentsOfFile = realImgPath);
			
				if(img!=null){
					let image = new VisionImage(image = img!); 
					chineseTextRecognizer.process(image as VisionImage,completion=(TextList,error)=>{
						if(error!=null||TextList==null){
							uni.hideLoading()
							uni.showToast({title:"失败",icon:'none'})
							return;
						}
						let str = [] as string[]
						let sour = [] as string[]
						for(block in TextList!.blocks){
							let lines = block.lines
							if(lines!=null){
								for(line in lines) {
									let elements = line.elements
									if(elements!=null){
										let texts = ''
										for(element in elements) {
										    let elementText = element.text;
										    let rect = element.frame as CGRect
											let elementFrame = [rect.origin.x,rect.origin.y,rect.size.width,rect.size.height] as number[]
											sour.push(JSON.stringify({boundingBox:elementFrame,text:elementText})!)
											
											texts+=elementText
										}
										if(texts!=''){
											str.push(texts)
										}
									}
								    
								}
							}
							
						}
						uni.hideLoading()
						callback(str as string[],sour)
					})
					
				}
				
			} catch (e) {
				console.warn("下载失败")
				uni.hideLoading()
				uni.showToast({title:"下载失败",icon:'none'})
				callback([] as string[],[] as string[])
			}
	
		},
		fail() {
			uni.hideLoading()
			uni.showToast({title:"下载失败",icon:'none'})
			callback([] as string[],[] as string[])
		}
	})
}
export function localFilePathImageBuilder(pathfile : string,callback:(str:string[],source:string[])=>void,langs:string|null){
	let local = langs == null?'zh':(langs! as string)
	let chineseOptions = new ChineseTextRecognizerOptions()
	let chineseTextRecognizer = TextRecognizer.textRecognizer(options=chineseOptions)
	
	if(local == 'ja'){
		chineseTextRecognizer = TextRecognizer.textRecognizer(options=new JapaneseTextRecognizerOptions())
	}
	let realImgPath = UTSiOS.convert2AbsFullPath(pathfile)
	let img = new UIImage(contentsOfFile = realImgPath);
		
	if(img!=null){
		let image = new VisionImage(image = img!); 
		chineseTextRecognizer.process(image as VisionImage,completion=(TextList,error)=>{
			if(error!=null||TextList==null){
				callback([] as string[],[] as string[])
				return;
			}
			let str = [] as string[]
			let sour = [] as string[]
			for(block in TextList!.blocks){
				let lines = block.lines
				if(lines!=null){
					for(line in lines) {
						let elements = line.elements
						if(elements!=null){
							let texts = ''
							for(element in elements) {
							    let elementText = element.text;
							    let rect = element.frame as CGRect
								let elementFrame = [rect.origin.x,rect.origin.y,rect.size.width,rect.size.height] as number[]
								sour.push(JSON.stringify({boundingBox:elementFrame,text:elementText})!)
								
								texts+=elementText
							}
							if(texts!=''){
								str.push(texts)
							}
						}
					    
					}
				}
				
			}
			callback(str as string[],sour)
		})
		
	}
	
}