split Channel into its own file

app/src/main/java/com/geeksville/mesh/model/Channel.kt

@@ -0,0 +1,79 @@
+package com.geeksville.mesh.model
+
+import android.graphics.Bitmap
+import android.net.Uri
+import android.util.Base64
+import androidx.compose.Model
+import com.geeksville.mesh.MeshProtos
+import com.google.zxing.BarcodeFormat
+import com.google.zxing.MultiFormatWriter
+import com.journeyapps.barcodescanner.BarcodeEncoder
+import java.net.MalformedURLException
+
+
+@Model
+data class Channel(
+    var name: String,
+    var modemConfig: MeshProtos.ChannelSettings.ModemConfig,
+    var settings: MeshProtos.ChannelSettings? = MeshProtos.ChannelSettings.getDefaultInstance()
+) {
+    companion object {
+        // Placeholder when emulating
+        val emulated = Channel(
+            MeshProtos.ChannelSettings.newBuilder().setName("Default")
+                .setModemConfig(MeshProtos.ChannelSettings.ModemConfig.Bw125Cr45Sf128).build()
+        )
+
+        const val prefix = "https://www.meshtastic.org/c/"
+
+        private const val base64Flags = Base64.URL_SAFE + Base64.NO_WRAP
+
+        private fun urlToSettings(url: Uri): MeshProtos.ChannelSettings {
+            val urlStr = url.toString()
+            val pathRegex = Regex("$prefix(.*)")
+            val (base64) = pathRegex.find(urlStr)?.destructured
+                ?: throw MalformedURLException("Not a meshtastic URL")
+            val bytes = Base64.decode(base64, base64Flags)
+
+            return MeshProtos.ChannelSettings.parseFrom(bytes)
+        }
+    }
+
+    constructor(c: MeshProtos.ChannelSettings) : this(c.name, c.modemConfig, c)
+
+    constructor(url: Uri) : this(urlToSettings(url))
+
+    /// Can this channel be changed right now?
+    var editable = false
+
+    /// Return an URL that represents the current channel values
+    fun getChannelUrl(): Uri {
+        // If we have a valid radio config use it, othterwise use whatever we have saved in the prefs
+
+        val channelBytes = settings?.toByteArray() ?: ByteArray(0) // if unset just use empty
+        val enc = Base64.encodeToString(channelBytes, base64Flags)
+
+        return Uri.parse("$prefix$enc")
+    }
+
+    fun getChannelQR(): Bitmap {
+        val multiFormatWriter = MultiFormatWriter()
+
+        val bitMatrix =
+            multiFormatWriter.encode(getChannelUrl().toString(), BarcodeFormat.QR_CODE, 192, 192);
+        val barcodeEncoder = BarcodeEncoder()
+        return barcodeEncoder.createBitmap(bitMatrix)
+    }
+}
+
+
+/**
+ * a nice readable description of modem configs
+ */
+fun MeshProtos.ChannelSettings.ModemConfig.toHumanString(): String = when (this) {
+    MeshProtos.ChannelSettings.ModemConfig.Bw125Cr45Sf128 -> "Medium range (but fast)"
+    MeshProtos.ChannelSettings.ModemConfig.Bw500Cr45Sf128 -> "Short range (but fast)"
+    MeshProtos.ChannelSettings.ModemConfig.Bw31_25Cr48Sf512 -> "Long range (but slower)"
+    MeshProtos.ChannelSettings.ModemConfig.Bw125Cr48Sf4096 -> "Very long range (but slow)"
+    else -> this.toString()
+}

app/src/main/java/com/geeksville/mesh/model/UIState.kt

@@ -2,90 +2,15 @@ package com.geeksville.mesh.model
 
 import android.content.Context
 import android.content.SharedPreferences
-import android.graphics.Bitmap
 import android.net.Uri
 import android.os.RemoteException
-import android.util.Base64
-import androidx.compose.Model
 import androidx.compose.mutableStateOf
 import androidx.core.content.edit
 import com.geeksville.android.BuildUtils.isEmulator
 import com.geeksville.android.Logging
 import com.geeksville.mesh.IMeshService
 import com.geeksville.mesh.MeshProtos
-import com.geeksville.mesh.MeshProtos.ChannelSettings.ModemConfig
 import com.geeksville.mesh.ui.getInitials
-import com.google.zxing.BarcodeFormat
-import com.google.zxing.MultiFormatWriter
-import com.journeyapps.barcodescanner.BarcodeEncoder
-import java.net.MalformedURLException
-
-@Model
-data class Channel(
-    var name: String,
-    var modemConfig: ModemConfig,
-    var settings: MeshProtos.ChannelSettings? = MeshProtos.ChannelSettings.getDefaultInstance()
-) {
-    companion object {
-        // Placeholder when emulating
-        val emulated = Channel(
-            MeshProtos.ChannelSettings.newBuilder().setName("Default")
-                .setModemConfig(ModemConfig.Bw125Cr45Sf128).build()
-        )
-
-        const val prefix = "https://www.meshtastic.org/c/"
-
-        private const val base64Flags = Base64.URL_SAFE + Base64.NO_WRAP
-
-        private fun urlToSettings(url: Uri): MeshProtos.ChannelSettings {
-            val urlStr = url.toString()
-            val pathRegex = Regex("$prefix(.*)")
-            val (base64) = pathRegex.find(urlStr)?.destructured
-                ?: throw MalformedURLException("Not a meshtastic URL")
-            val bytes = Base64.decode(base64, base64Flags)
-
-            return MeshProtos.ChannelSettings.parseFrom(bytes)
-        }
-    }
-
-    constructor(c: MeshProtos.ChannelSettings) : this(c.name, c.modemConfig, c)
-
-    constructor(url: Uri) : this(urlToSettings(url))
-
-    /// Can this channel be changed right now?
-    var editable = false
-
-    /// Return an URL that represents the current channel values
-    fun getChannelUrl(): Uri {
-        // If we have a valid radio config use it, othterwise use whatever we have saved in the prefs
-
-        val channelBytes = settings?.toByteArray() ?: ByteArray(0) // if unset just use empty
-        val enc = Base64.encodeToString(channelBytes, base64Flags)
-
-        return Uri.parse("$prefix$enc")
-    }
-
-    fun getChannelQR(): Bitmap {
-        val multiFormatWriter = MultiFormatWriter()
-
-        val bitMatrix =
-            multiFormatWriter.encode(getChannelUrl().toString(), BarcodeFormat.QR_CODE, 192, 192);
-        val barcodeEncoder = BarcodeEncoder()
-        return barcodeEncoder.createBitmap(bitMatrix)
-    }
-}
-
-
-/**
- * a nice readable description of modem configs
- */
-fun ModemConfig.toHumanString(): String = when (this) {
-    ModemConfig.Bw125Cr45Sf128 -> "Medium range (but fast)"
-    ModemConfig.Bw500Cr45Sf128 -> "Short range (but fast)"
-    ModemConfig.Bw31_25Cr48Sf512 -> "Long range (but slower)"
-    ModemConfig.Bw125Cr48Sf4096 -> "Very long range (but slow)"
-    else -> this.toString()
-}
 
 /// FIXME - figure out how to merge this staate with the AppStatus Model
 object UIState : Logging {