import { router } from ".."
import { getUrlParamsObj, isDevEnv } from "../utils/app"

const normalizeScanResult = (scanResult: string) => scanResult.replace("https://stgl.pj.gov.cn", "https://www.pjzhhq.cn")

export function useScanCode(actModalShow) {
	async function scanCodeAction(): Promise<string | undefined> {
		if (isDevEnv()) {
			const testQrCode = "https://stgl.pj.gov.cn/h5/#/pages/pay/scanPay?id=1931916121241079810"
			uni.showModal({ content: "开发环境不是浙政钉和诗画环境，扫码仅供测试" })
			return normalizeScanResult(testQrCode)
		}
		const scanResult = await new Promise<string>((resolve, reject) => {
			uni.scanCode({
				success: (res) => {
					console.log("uniapp扫码成功:", JSON.stringify(res))
					resolve(res.result || "")
				},
				fail: (err) => {
					console.error("uniapp扫码失败", JSON.stringify(err))
					resolve("")
				},
			})
		})
		return normalizeScanResult(scanResult || "")
	}

	// 处理url扫码结果
	function processUrlScanResult(url: string) {
		if (!url) return
		const searchParams = getUrlParamsObj(url)
		const { hardDoorId, cabinetNo, action, id, name } = searchParams
		// 智能柜扫码
		if (hardDoorId && cabinetNo) {
			router.jump("/pages/cabinet/buy", { hardDoorId, cabinetNo })
			return
		}
		// 扫收款机上生成的码支付
		if (action === "harQrCodeScanPay") {
			const { mchId, orderId } = searchParams
			router.jump("/pages/pay/scanPay", { action, mchId, orderId })
			return
		}
		// 扫商户url收款码
		if (id) {
			router.jump("/pages/pay/scanPay", { id, name })
			return
		}
		uni.showToast({ title: "无效的二维码", icon: "none" })
	}

	// 处理base64扫码结果
	function processBase64ScanResult(scanResult: string) {
		const decodedString = decodeBase64(scanResult)
		if (!decodedString) return
		try {
			const decodedJson = JSON.parse(decodedString)
			// 商户活动优惠券扫码核销
			if (decodedJson.cancelId) {
				actModalShow({ cancelId: decodedJson.cancelId })
				return
			}
			// 商户扫码支付
			if (decodedJson.id) {
				router.jump("/pages/pay/scanPay", { id: decodedJson.id })
				return
			}
			// 智能柜扫码开门
			if (decodedJson.hardDoorId && decodedJson.cabinetNo) {
				router.jump("/pages/cabinet/buy", { hardDoorId: decodedJson.hardDoorId, cabinetNo: decodedJson.cabinetNo })
				return
			}
			uni.showToast({ title: "无效的二维码", icon: "none" })
		} catch (error) {
			uni.showToast({ title: "无效的二维码内容", icon: "none" })
		}
	}

	// 解码base64
	function decodeBase64(base64String: string): string | undefined {
		try {
			const decodedBinaryString = atob(base64String)
			const uint8Array = new Uint8Array(decodedBinaryString.length)
			for (let i = 0; i < decodedBinaryString.length; i++) {
				uint8Array[i] = decodedBinaryString.charCodeAt(i)
			}
			const decoder = new TextDecoder("utf-8")
			const decodedString = decoder.decode(uint8Array)

			// console.log("解码结果", decodedString)

			return decodedString
		} catch (error) {
			console.error("Base64 解码失败:", error)
			uni.showToast({ title: "无效的二维码", icon: "none" })
		}
	}

	return { scanCodeAction, processUrlScanResult, processBase64ScanResult }
}