Implemented EpcQrCodeCreator

EpcQrCode/src/commonMain/kotlin/net/codinux/banking/epcqrcode/CreatorParam.kt

@@ -0,0 +1,20 @@
+package net.codinux.banking.epcqrcode
+
+
+open class CreatorParam(
+
+    var receiverName: String = "",
+
+    var iban: String = "",
+
+    var bic: String? = null,
+
+    var amount: Double? = null,
+
+    var reference: String? = null,
+
+    var noteToUser: String? = null,
+
+    var encoding: EpcQrCodeCharacterSet = EpcQrCodeCharacterSet.UTF_8
+
+)

EpcQrCode/src/commonMain/kotlin/net/codinux/banking/epcqrcode/EncodeToQrCodeConfig.kt

@@ -5,5 +5,5 @@ open class EncodeToQrCodeConfig(
     open val width: Int = 500,
     open val height: Int = 500,
     open val format: ImageFormat = ImageFormat.PNG,
-    open val encoding: EpcQrCodeEncoding = EpcQrCodeEncoding.Utf8
+    open val encoding: EpcQrCodeCharacterSet = EpcQrCodeCharacterSet.UTF_8
 )

EpcQrCode/src/commonMain/kotlin/net/codinux/banking/epcqrcode/EpcQrCode.kt

@@ -0,0 +1,102 @@
+package net.codinux.banking.epcqrcode
+
+
+open class EpcQrCode(
+
+    /**
+     * 3 bytes.
+     * Always(?) has value "BCD".
+     */
+    open val serviceTag: String,
+
+    /**
+     * 3 bytes.
+     * Has either value "001" or "002".
+     */
+    open val version: EpcQrCodeVersion,
+
+    /**
+     * 1 byte.
+     * The values 1,2,3,4,5,6,7 and 8 determine the interpretation of data to be used.
+     * In that order they qualify UTF-8, ISO 8895-1, ISO 8895-2, ISO 8895-4, ISO 8895-5, ISO 8895- 7, ISO 8895-10 and ISO 8895-15
+     */
+    open val coding: EpcQrCodeCharacterSet,
+
+    /**
+     * 3 bytes.
+     * The Function is defined by its key value: SCT - SEPA Credit Transfer
+     */
+    open val function: String,
+
+    /**
+     * Receiver's BIC.
+     * Mandatory in Version 001, optional in Version 002.
+     * Either 8 or 11 bytes.
+     */
+    open val bic: String?,
+
+    /**
+     * Receiver name.
+     * Max. 70 characters
+     */
+    open val receiverName: String,
+
+    /**
+     * Receiver's IBAN.
+     * Max. 34 bytes.
+     */
+    open val iban: String,
+
+    /**
+     * Three capital letter currency code.
+     * Only set if amount is also set.
+     * The only Currency value available with this version is EUR.
+     */
+    open val currencyCode: String?,
+
+    /**
+     * Optional amount.
+     * Max. 12 bytes.
+     */
+    open val amount: Double?, // TODO: use BigDecimal
+
+    /**
+     * Optional purpose code.
+     * Max. 4 bytes.
+     */
+    open val purposeCode: String?,
+
+    open val remittanceReference: String?,
+
+    open val remittanceText: String?,
+
+    open val originatorInformation: String?
+
+) {
+
+    companion object {
+
+        const val ServiceTagDefaultValue = "BCD"
+
+        const val FunctionDefaultValue = "SCT"
+
+        const val CurrencyCodeDefaultValue = "EUR"
+
+        const val PurposeCodeDefaultValue = "CHAR"
+
+    }
+
+
+    /**
+     * [remittanceReference] and [remittanceText] are mutual exclusive, that means one of both has to be set
+     * but they are never set both at the same time.
+     *
+     * remittance returns the one that is set.
+     */
+    open val remittance: String
+        get() = remittanceReference ?: remittanceText ?: "" // they should never be both null
+
+    override fun toString(): String {
+        return "$receiverName $amount $currencyCode ${remittance}"
+    }
+}

EpcQrCode/src/commonMain/kotlin/net/codinux/banking/epcqrcode/EpcQrCodeCharacterSet.kt

@@ -0,0 +1,22 @@
+package net.codinux.banking.epcqrcode
+
+
+enum class EpcQrCodeCharacterSet(val code: Int) {
+
+    UTF_8(1),
+
+    ISO_8895_1(2),
+
+    ISO_8895_2(3),
+
+    ISO_8895_4(4),
+
+    ISO_8895_5(5),
+
+    ISO_8895_7(6),
+
+    ISO_8895_10(7),
+
+    ISO_8895_15(8)
+
+}

EpcQrCode/src/commonMain/kotlin/net/codinux/banking/epcqrcode/EpcQrCodeCreator.kt

@@ -0,0 +1,65 @@
+package net.codinux.banking.epcqrcode
+
+
+open class EpcQrCodeCreator {
+
+//    companion object {
+//        val AmountNumberFormat = Decim
+//    }
+
+
+    open fun generate(param: CreatorParam): EpcQrCode {
+        return EpcQrCode(
+            EpcQrCode.ServiceTagDefaultValue,
+            EpcQrCodeVersion.Version2,
+            param.encoding,
+            EpcQrCode.FunctionDefaultValue,
+            param.bic,
+            param.receiverName,
+            param.iban,
+            EpcQrCode.CurrencyCodeDefaultValue,
+            param.amount,
+            EpcQrCode.PurposeCodeDefaultValue,
+            null,
+            param.reference,
+            param.noteToUser
+        )
+    }
+
+    open fun generateAsString(param: CreatorParam): String {
+        val epcQrCode = generate(param)
+
+        val epcQrCodeBuilder = StringBuilder()
+
+        epcQrCodeBuilder.appendLine(epcQrCode.serviceTag)
+        epcQrCodeBuilder.appendLine(epcQrCode.version.code)
+        epcQrCodeBuilder.appendLine(epcQrCode.coding.code)
+        epcQrCodeBuilder.appendLine(epcQrCode.function)
+        epcQrCodeBuilder.appendLine(mapNullable(epcQrCode.bic))
+        epcQrCodeBuilder.appendLine(epcQrCode.receiverName)
+        epcQrCodeBuilder.appendLine(epcQrCode.iban)
+        epcQrCodeBuilder.appendLine(mapNullable(epcQrCode.amount?.let { (epcQrCode.currencyCode ?: EpcQrCode.CurrencyCodeDefaultValue) + convert(it) }))
+        epcQrCodeBuilder.appendLine(epcQrCode.purposeCode)
+        epcQrCodeBuilder.appendLine(mapNullable(epcQrCode.remittanceReference))
+
+        if (epcQrCode.remittanceText != null || epcQrCode.originatorInformation != null) {
+            epcQrCodeBuilder.appendLine(mapNullable(epcQrCode.remittanceText))
+        }
+
+        if (epcQrCode.originatorInformation != null) {
+            epcQrCodeBuilder.appendLine(epcQrCode.originatorInformation)
+        }
+
+        return epcQrCodeBuilder.toString()
+    }
+
+
+    protected open fun convert(amount: Double): String {
+        return amount.toString() // TODO: ensure that it's converted to the correct format
+    }
+
+    protected open fun mapNullable(value: String?): String {
+        return value ?: ""
+    }
+
+}

EpcQrCode/src/commonMain/kotlin/net/codinux/banking/epcqrcode/EpcQrCodeEncoding.kt

@@ -1,7 +0,0 @@
-package net.codinux.banking.epcqrcode
-
-enum class EpcQrCodeEncoding {
-
-    Utf8
-
-}

EpcQrCode/src/commonMain/kotlin/net/codinux/banking/epcqrcode/EpcQrCodeVersion.kt

@@ -0,0 +1,10 @@
+package net.codinux.banking.epcqrcode
+
+
+enum class EpcQrCodeVersion(val code: String) {
+
+    Version1("001"), // cannot name it '1'
+
+    Version2("002")
+
+}

EpcQrCode/src/jvmMain/kotlin/net/codinux/banking/epcqrcode/QrCodeGenerator.kt

@@ -12,7 +12,7 @@ class QrCodeGenerator {
     fun generateQrCode(informationToEncode: String, config: EncodeToQrCodeConfig = EncodeToQrCodeConfig()): ByteArray {
         val hints = mutableMapOf<EncodeHintType, Any>()
 
-        hints[EncodeHintType.CHARACTER_SET] = config.encoding.name
+        hints[EncodeHintType.CHARACTER_SET] = map(config.encoding)
 
         val bitMatrix = QRCodeWriter().encode(informationToEncode, BarcodeFormat.QR_CODE, config.width, config.height, hints)
 
@@ -23,4 +23,12 @@ class QrCodeGenerator {
         return outputStream.toByteArray()
     }
 
+
+    private fun map(encoding: EpcQrCodeCharacterSet): String {
+        return when (encoding) {
+            EpcQrCodeCharacterSet.UTF_8 -> "UTF8"
+            else -> encoding.name.replace("ISO_8859", "ISO8859")
+        }
+    }
+
 }

EpcQrCodeAndroidApp/src/main/java/net/codinux/banking/epcqrcode/MainActivity.kt

@@ -17,7 +17,8 @@ class MainActivity : AppCompatActivity() {
 
         txtMessage.text = MppTest().showMessage()
 
-        val imageBytes = QrCodeGenerator().generateQrCode(MppTest().getTestEpcQrCodeContent())
+        val qrCodeContent = EpcQrCodeCreator().generateAsString(CreatorParam("Mahatma Gandhi", "IN00123456789876543210", null, 1234.56, "Struggle for independence"))
+        val imageBytes = QrCodeGenerator().generateQrCode(qrCodeContent)
         imgGeneratedQrCode.setImageBitmap(BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.size))
     }
 

EpcQrCodeJavaFxApp/src/main/kotlin/net/codinux/banking/epcqrcode/windows/main/MainWindow.kt

@@ -4,8 +4,7 @@ import javafx.beans.property.SimpleObjectProperty
 import javafx.scene.image.Image
 import tornadofx.*
 import java.io.ByteArrayInputStream
-import net.codinux.banking.epcqrcode.MppTest
-import net.codinux.banking.epcqrcode.QrCodeGenerator
+import net.codinux.banking.epcqrcode.*
 import org.slf4j.LoggerFactory
 
 
@@ -16,9 +15,11 @@ class MainWindow : View(FX.messages["application.title"]) {
     }
 
 
+    private val qrCodeContent = EpcQrCodeCreator().generateAsString(CreatorParam("Mahatma Gandhi", "IN00123456789876543210", null, 1234.56, "Struggle for independence")) // TODO: remove again
+
     private val qrCodeGenerator = QrCodeGenerator()
 
-    private val qrCode = SimpleObjectProperty<Image>(generateQrCode(MppTest().getTestEpcQrCodeContent()))
+    private val qrCode = SimpleObjectProperty<Image>(generateQrCode(qrCodeContent))
 
 
     override val root = vbox {