Implemented BankFinder

fints4javaLib/src/main/kotlin/net/dankito/fints/banks/BankFinder.kt

@@ -0,0 +1,61 @@
+package net.dankito.fints.banks
+
+import net.dankito.fints.model.BankInfo
+import net.dankito.utils.serialization.JacksonJsonSerializer
+import org.slf4j.LoggerFactory
+
+
+open class BankFinder {
+
+    companion object {
+        private val log = LoggerFactory.getLogger(BankFinder::class.java)
+    }
+
+
+    protected var bankListField: List<BankInfo>? = null
+
+
+    open fun findBankByBankCode(query: String): List<BankInfo> {
+        return getBankList().filter { it.bankCode.startsWith(query) }
+    }
+
+    open fun findBankByNameBankCodeOrCity(query: String): List<BankInfo> {
+        val queryLowerCase = query.toLowerCase()
+
+        return getBankList().filter {
+            it.name.toLowerCase().contains(queryLowerCase)
+                    || it.bankCode.startsWith(query)
+                    || it.city.contains(queryLowerCase)
+        }
+    }
+
+
+    open fun getBankList(): List<BankInfo> {
+        bankListField?.let {
+            return it
+        }
+
+        val bankList = loadBankList()
+
+        this.bankListField = bankList
+
+        return bankList
+    }
+
+    protected open fun loadBankList(): List<BankInfo> {
+        try {
+            val inputStream = BankFinder::class.java.classLoader.getResourceAsStream("BankList.json")
+
+            val bankListString = inputStream.bufferedReader().readText()
+
+            JacksonJsonSerializer().deserializeList(bankListString, BankInfo::class.java)?.let {
+                return it
+            }
+        } catch (e: Exception) {
+            log.error("Could not load bank list", e)
+        }
+
+        return listOf()
+    }
+
+}

fints4javaLib/src/test/kotlin/net/dankito/fints/banks/BankFinderTest.kt

@@ -0,0 +1,43 @@
+package net.dankito.fints.banks
+
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.Test
+
+class BankFinderTest {
+
+    private val underTest = BankFinder()
+
+
+    @Test
+    fun findBankByBankCode_10000000() {
+
+        // when
+        val result = underTest.findBankByBankCode("10000000")
+
+        // then
+        assertThat(result).hasSize(1)
+        assertThat(result[0].name).isEqualTo("Bundesbank")
+    }
+
+    @Test
+    fun findBankByNameBankCodeOrCity_starnberg() {
+
+        // when
+        val result = underTest.findBankByNameBankCodeOrCity("starnberg")
+
+        // then
+        assertThat(result).hasSize(66)
+    }
+
+    @Test
+    fun findBankByNameBankCodeOrCity_mizUh() {
+
+        // when
+        val result = underTest.findBankByNameBankCodeOrCity("mizUh")
+
+        // then
+        assertThat(result).hasSize(1)
+        assertThat(result[0].name).isEqualTo("Mizuho Bank Filiale Düsseldorf")
+    }
+
+}