const sizeOf = require('image-size');
const _ = require('lodash');
const jimp = require('jimp');
const progress = require('progress');
let layerMaxStart = 4
let layerMax = 5

async function cutPng() {
	for (let layer = layerMaxStart; layer < layerMax; layer++) {
		let urlStr = `./dealpng/layer_${layer}.png`
		const currentImageInfo = sizeOf(urlStr) // 加载一张图
		let clientHeight = currentImageInfo.height
		let clientWidth = currentImageInfo.width
		console.log(111, currentImageInfo)

		const heights = []
		const widths = []
		const SPLIT_HEIGHT = 256
		while (clientHeight > 0) {
			// 切图高度充足时
			if (clientHeight >= SPLIT_HEIGHT) {
				heights.push(SPLIT_HEIGHT)

				clientHeight -= SPLIT_HEIGHT

			} else {
				// 切割高度不够时，直接切成一张
				heights.push(clientHeight)

				clientHeight = 0
			}
		}
		while (clientWidth > 0) {
			// 切图宽度充足时
			if (clientWidth >= SPLIT_HEIGHT) {
				widths.push(SPLIT_HEIGHT)
				clientWidth -= SPLIT_HEIGHT
			} else {
				// 切割宽度不够时，直接切成一张
				widths.push(clientWidth)
				clientWidth = 0
			}
		}
		let counti = 0
		let countiNumber = 0
		let savePngArr = []
		for (let i of widths) {
			let conutj = 0
			let conutjNumber = 0
			for (let j of heights) {
				// let imageTemp = await jimp.read(urlStr)
				// let cropTemp = imageTemp.crop(countiNumber, conutjNumber, i, j)
				// cropTemp.write(`./dealpng/${layer}/${counti}/${conutj}.png`)
				savePngArr.push({
					z: layer,
					x: counti,
					y: conutj,
					countiNumber,
					conutjNumber,
					width: i,
					height: j,
				})

				conutj++
				conutjNumber += j
			}
			counti++
			countiNumber += i
		}
		let conutBar = savePngArr.length
		let bar = new progress(':bar :current/:total', { total: conutBar });
		let imageTemp = await jimp.read(urlStr)
		console.log(8777,imageTemp)
		// for (let i = 0; i < conutBar; i++) {
		// 	let imageTemp = await jimp.read(urlStr)
		// 	let elei = savePngArr[i];
		// 	let cropTemp = imageTemp.crop(elei.countiNumber, elei.conutjNumber, elei.width, elei.height)
		// 	cropTemp.write(`./dealpng/${elei.z}/${elei.x}/${elei.y}.png`)
		// 	bar.tick();
		// }
	}
	console.log(8774, "切割结束")

}
cutPng()