feat: add scan qrcode command

src/main/kotlin/cn/rtast/fancybot/Const.kt

@@ -92,7 +92,7 @@ val tasks = mapOf(
 val commands = listOf(
     EchoCommand(), JrrpCommand(),
     NiuziRedeemCommand(), HitokotoCommand(),
-    KFCCommand(), QRCodeCommand(),
+    KFCCommand(), GenerateQRCodeCommand(),
     AntiRevokeCommand(), MCPingCommand(),
     WeatherCommand(), CigaretteCommand(),
     RemakeCommand(), PixivCommand(),
@@ -118,5 +118,5 @@ val commands = listOf(
     ShotSelfCommand(), TenSetuCommand(),
     ReactionCommand(), MCSkinCommand(),
     GithubLatestCommitCommand(), RandomMusicCommand(),
-    ZDJDCommand()
+    ZDJDCommand(), ScanQRCodeCommand()
 )

src/main/kotlin/cn/rtast/fancybot/FancyBot.kt

@@ -7,6 +7,7 @@
 
 package cn.rtast.fancybot
 
+import cn.rtast.fancybot.commands.misc.ScanQRCodeCommand
 import cn.rtast.fancybot.commands.parse.*
 import cn.rtast.fancybot.enums.WSType
 import cn.rtast.fancybot.util.initCommandAndItem
@@ -57,6 +58,7 @@ class FancyBot : OneBotListener {
 
         ReverseGIFCommand.callback(message)
         AsciiArtCommand.callback(message)
+        ScanQRCodeCommand.callback(message)
 
         if (message.rawMessage.toList().any { it in arrayListOf('*', '-', '/', '+', '=') }) {
             val calculateResult = CalculateCommand.parse(message.rawMessage)

src/main/kotlin/cn/rtast/fancybot/commands/misc/QRCodeCommand.kt

@@ -11,18 +11,26 @@ import cn.rtast.fancybot.annotations.CommandDescription
 import cn.rtast.fancybot.enums.CommandAction
 import cn.rtast.fancybot.util.file.insertActionRecord
 import cn.rtast.fancybot.util.str.encodeToBase64
+import cn.rtast.fancybot.util.toBufferedImage
 import cn.rtast.fancybot.util.toByteArray
 import cn.rtast.rob.entity.GroupMessage
+import cn.rtast.rob.enums.ArrayMessageType
 import cn.rtast.rob.util.BaseCommand
 import cn.rtast.rob.util.ob.MessageChain
 import cn.rtast.rob.util.ob.OneBotListener
 import com.google.zxing.BarcodeFormat
+import com.google.zxing.BinaryBitmap
 import com.google.zxing.EncodeHintType
+import com.google.zxing.MultiFormatReader
+import com.google.zxing.client.j2se.BufferedImageLuminanceSource
 import com.google.zxing.client.j2se.MatrixToImageWriter
+import com.google.zxing.common.HybridBinarizer
 import com.google.zxing.qrcode.QRCodeWriter
+import java.awt.image.BufferedImage
+import java.net.URI
 
 @CommandDescription("生成二维码")
-class QRCodeCommand : BaseCommand() {
+class GenerateQRCodeCommand : BaseCommand() {
     override val commandNames = listOf("/qr")
 
     private fun generateQRCode(content: String): String {
@@ -33,6 +41,10 @@ class QRCodeCommand : BaseCommand() {
     }
 
     override suspend fun executeGroup(listener: OneBotListener, message: GroupMessage, args: List<String>) {
+        if (args.isEmpty()) {
+            message.reply("发送`/qr <内容>`即可生成一张二维码的图片")
+            return
+        }
         val content = args.joinToString(" ")
         val image = this.generateQRCode(content)
         val msg = MessageChain.Builder()
@@ -42,3 +54,43 @@ class QRCodeCommand : BaseCommand() {
         insertActionRecord(CommandAction.GenQRCode, message.sender.userId)
     }
 }
+
+@CommandDescription("解析二维码中的内容!")
+class ScanQRCodeCommand : BaseCommand() {
+    override val commandNames = listOf("/scan")
+
+    companion object {
+
+        private val waitingList = mutableListOf<Long>()
+
+        private fun scanQRCode(image: BufferedImage): String {
+            val luminanceSource = BufferedImageLuminanceSource(image)
+            val binaryBitmap = BinaryBitmap(HybridBinarizer(luminanceSource))
+            val result = MultiFormatReader().decode(binaryBitmap)
+            return result.text
+        }
+
+        suspend fun callback(message: GroupMessage) {
+            if (message.sender() in waitingList) {
+                waitingList.remove(message.sender())
+                if (!message.message.any { it.type == ArrayMessageType.image }) {
+                    message.reply("回复错误已取消本次操作")
+                    return
+                }
+                val image = message.message.find { it.type == ArrayMessageType.image }?.data?.file!!
+                val bufferedImage = URI(image).toURL().readBytes().toBufferedImage()
+                val result = this.scanQRCode(bufferedImage)
+                message.reply("二维码扫描结果: $result")
+            }
+        }
+    }
+
+    override suspend fun executeGroup(listener: OneBotListener, message: GroupMessage, args: List<String>) {
+        if (message.sender() !in waitingList) {
+            waitingList.add(message.sender())
+            message.reply("继续发送一张二维码图片")
+        } else {
+            message.reply("回复错误已经取消本次操作")
+        }
+    }
+}