diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
new file mode 100644
index 0000000..fdc392f
--- /dev/null
+++ b/.idea/jarRepositories.xml
@@ -0,0 +1,20 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..4b49563
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..ba4fb75
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,18 @@
+plugins {
+ id 'java'
+}
+
+group 'org.example'
+version '1.0-SNAPSHOT'
+
+sourceCompatibility = 1.8
+
+repositories {
+ mavenCentral()
+}
+
+dependencies {
+ compile group: 'javax.json.bind', name: 'javax.json.bind-api', version: '1.0'
+ compile group: 'org.glassfish', name: 'javax.json', version: '1.1.2'
+ compile group: 'org.eclipse', name: 'yasson', version: '1.0.1'
+}
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..87b738c
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..44e7c4d
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100644
index 0000000..af6708f
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+## Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG=`dirname "$PRG"`"/$link"
+ fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+ echo "$*"
+}
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+ CYGWIN* )
+ cygwin=true
+ ;;
+ Darwin* )
+ darwin=true
+ ;;
+ MINGW* )
+ msys=true
+ ;;
+ NONSTOP* )
+ nonstop=true
+ ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD="java"
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+ MAX_FD_LIMIT=`ulimit -H -n`
+ if [ $? -eq 0 ] ; then
+ if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+ MAX_FD="$MAX_FD_LIMIT"
+ fi
+ ulimit -n $MAX_FD
+ if [ $? -ne 0 ] ; then
+ warn "Could not set maximum file descriptor limit: $MAX_FD"
+ fi
+ else
+ warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+ fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+ GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+ APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+ CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+ JAVACMD=`cygpath --unix "$JAVACMD"`
+
+ # We build the pattern for arguments to be converted via cygpath
+ ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+ SEP=""
+ for dir in $ROOTDIRSRAW ; do
+ ROOTDIRS="$ROOTDIRS$SEP$dir"
+ SEP="|"
+ done
+ OURCYGPATTERN="(^($ROOTDIRS))"
+ # Add a user-defined pattern to the cygpath arguments
+ if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+ OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+ fi
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ i=0
+ for arg in "$@" ; do
+ CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+ CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
+
+ if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
+ eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+ else
+ eval `echo args$i`="\"$arg\""
+ fi
+ i=$((i+1))
+ done
+ case $i in
+ (0) set -- ;;
+ (1) set -- "$args0" ;;
+ (2) set -- "$args0" "$args1" ;;
+ (3) set -- "$args0" "$args1" "$args2" ;;
+ (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+ (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+ (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+ (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+ (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+ (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+ esac
+fi
+
+# Escape application args
+save () {
+ for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+ echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+ cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..6d57edc
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..a7e8409
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = 'projekt_2'
+
diff --git a/src/main/java/com/projekt2/ApiException.java b/src/main/java/com/projekt2/ApiException.java
new file mode 100644
index 0000000..c350d50
--- /dev/null
+++ b/src/main/java/com/projekt2/ApiException.java
@@ -0,0 +1,11 @@
+package com.projekt2;
+
+public class ApiException extends RuntimeException {
+ public ApiException(Throwable cause) {
+ super(cause);
+ }
+
+ public ApiException(String message) {
+ super(message);
+ }
+}
diff --git a/src/main/java/com/projekt2/ConnectionFactory.java b/src/main/java/com/projekt2/ConnectionFactory.java
new file mode 100644
index 0000000..725dfb1
--- /dev/null
+++ b/src/main/java/com/projekt2/ConnectionFactory.java
@@ -0,0 +1,7 @@
+package com.projekt2;
+
+public class ConnectionFactory {
+ public HttpConnection build(String url) {
+ return new HttpConnection(url);
+ }
+}
diff --git a/src/main/java/com/projekt2/ExchangeApi.java b/src/main/java/com/projekt2/ExchangeApi.java
new file mode 100644
index 0000000..bb0dfed
--- /dev/null
+++ b/src/main/java/com/projekt2/ExchangeApi.java
@@ -0,0 +1,13 @@
+package com.projekt2;
+
+import java.math.BigDecimal;
+
+public interface ExchangeApi {
+ /**
+ * @param currencyCode currency code that should be checked, for example USD
+ * @return excahge rate between PLN and currencyCode on date
+ */
+ BigDecimal exchangeRate(String currencyCode);
+
+
+}
diff --git a/src/main/java/com/projekt2/HttpConnection.java b/src/main/java/com/projekt2/HttpConnection.java
new file mode 100644
index 0000000..05367f6
--- /dev/null
+++ b/src/main/java/com/projekt2/HttpConnection.java
@@ -0,0 +1,53 @@
+package com.projekt2;
+
+import java.io.BufferedReader;
+import java.io.Closeable;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+public class HttpConnection implements Closeable {
+
+ private final HttpURLConnection connection;
+
+ HttpConnection(String url) {
+ try {
+ connection = (HttpURLConnection) new URL(url).openConnection();
+ } catch (IOException e) {
+ throw new ApiException(e);
+ }
+ }
+
+ String response() {
+ validateResponse();
+ StringBuilder response = new StringBuilder();
+ try (BufferedReader responseReader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
+ String line;
+ while ((line = responseReader.readLine()) != null) {
+ response.append(line);
+ }
+ } catch (IOException e) {
+ throw new ApiException(e);
+ }
+ return response.toString();
+ }
+
+ @Override
+ public void close() {
+ connection.disconnect();
+ }
+
+ void validateResponse() {
+ try {
+ int responseCode = connection.getResponseCode();
+ if (responseCode != 200) {
+ String responseMessage = connection.getResponseMessage();
+ throw new ApiException(String.format("Something went wrong! [%d] %s", responseCode, responseMessage));
+ }
+ } catch (IOException e) {
+ throw new ApiException(e);
+ }
+ }
+
+}
diff --git a/src/main/java/com/projekt2/NbpApi.java b/src/main/java/com/projekt2/NbpApi.java
new file mode 100644
index 0000000..f2223ca
--- /dev/null
+++ b/src/main/java/com/projekt2/NbpApi.java
@@ -0,0 +1,55 @@
+package com.projekt2;
+
+import com.projekt2.nbp.CurrencyDetails;
+
+import javax.json.bind.Jsonb;
+import javax.json.bind.JsonbBuilder;
+import java.math.BigDecimal;
+import java.util.Scanner;
+
+public class NbpApi implements ExchangeApi {
+
+ public static void main(String[] args) {
+ NbpApi nbpApi = new NbpApi();
+ Scanner scanner = new Scanner(System.in);
+ nbpApi.getCurrencyCodeFromUser(scanner, nbpApi);
+ }
+
+ public void getCurrencyCodeFromUser(Scanner scanner, NbpApi nbpApi) {
+ System.out.println("Podaj kod waluty: ");
+ String currency = scanner.nextLine();
+
+ BigDecimal rate = nbpApi.exchangeRate(currency.toUpperCase());
+ if (rate != null) {
+ System.out.println("Dzisiejszy kurs EUR/" + currency.toUpperCase() + " to: " + rate);
+ } else {
+ System.out.println("Brak waluty o podanym kodzie. Czy chcesz podać inny kod ? (Y/N)");
+ if (scanner.nextLine().equalsIgnoreCase("y")) {
+ getCurrencyCodeFromUser(scanner, nbpApi);
+ }
+ }
+ }
+
+ private static final String API_URL_TEMPLATE = "https://api.exchangeratesapi.io/latest";
+
+ private final ConnectionFactory connectionFactory;
+ private final Jsonb jsonb;
+
+ public NbpApi() {
+ this(new ConnectionFactory(), JsonbBuilder.create());
+ }
+
+ public NbpApi(ConnectionFactory connectionFactory, Jsonb jsonb) {
+ this.connectionFactory = connectionFactory;
+ this.jsonb = jsonb;
+ }
+
+ @Override
+ public BigDecimal exchangeRate(String currencyCode) {
+ try (HttpConnection connection = connectionFactory.build(API_URL_TEMPLATE)) {
+ String response = connection.response();
+ CurrencyDetails currencyDetails = jsonb.fromJson(response, CurrencyDetails.class);
+ return currencyDetails.getRates().get(currencyCode);
+ }
+ }
+}
diff --git a/src/main/java/com/projekt2/nbp/CurrencyDetails.java b/src/main/java/com/projekt2/nbp/CurrencyDetails.java
new file mode 100644
index 0000000..7d55282
--- /dev/null
+++ b/src/main/java/com/projekt2/nbp/CurrencyDetails.java
@@ -0,0 +1,44 @@
+package com.projekt2.nbp;
+
+import java.math.BigDecimal;
+import java.util.Map;
+
+public class CurrencyDetails {
+
+ private String date;
+ private String base;
+ private Map rates;
+
+ public String getDate() {
+ return date;
+ }
+
+ public void setDate(String date) {
+ this.date = date;
+ }
+
+ public String getBase() {
+ return base;
+ }
+
+ public void setBase(String base) {
+ this.base = base;
+ }
+
+ public Map getRates() {
+ return rates;
+ }
+
+ public void setRates(Map rates) {
+ this.rates = rates;
+ }
+
+ @Override
+ public String toString() {
+ return "CurrencyDetails{" +
+ "date='" + date + '\'' +
+ ", base='" + base + '\'' +
+ ", rates=" + rates +
+ '}';
+ }
+}
diff --git a/src/main/java/com/projekt2/nbp/CurrencyRate.java b/src/main/java/com/projekt2/nbp/CurrencyRate.java
new file mode 100644
index 0000000..d64d4fd
--- /dev/null
+++ b/src/main/java/com/projekt2/nbp/CurrencyRate.java
@@ -0,0 +1,31 @@
+package com.projekt2.nbp;
+
+import javax.json.bind.annotation.JsonbProperty;
+import java.math.BigDecimal;
+
+public class CurrencyRate {
+
+ @JsonbProperty("mid")
+ private BigDecimal rate;
+ @JsonbProperty("no")
+ private String id;
+
+ public CurrencyRate() {
+ }
+
+ public BigDecimal getRate() {
+ return rate;
+ }
+
+ public void setRate(BigDecimal rate) {
+ this.rate = rate;
+ }
+
+ public String getId() {
+ return id;
+ }
+
+ public void setId(String id) {
+ this.id = id;
+ }
+}
\ No newline at end of file