Initial support of the free API.

README.md

@@ -7,6 +7,8 @@ A Java library to query <https://www.cvrapi.dk> (a Danish VAT API service).
 [![Build Status](https://drone.data.coop/api/badges/nellemann/libcvrapi/status.svg)](https://drone.data.coop/nellemann/libcvrapi)
 ## Usage
 
+### Paid API
+
 Lookup company by CVR number:
 
 ```java
@@ -18,6 +20,17 @@ System.out.println(company.life.name);
 The *Company* represents most of the same properties as seen in the example JSON in the [api documentation](http://docs.rest.cvrapi.dk/).
 
 
+### Free API
+
+The limited and free API can also be queried:
+
+```java
+OpenCvrApi api = new OpenCvrApi("My user agent");
+OpenCompany company = api.getCompanyByVatNumber("57020415");
+System.out.println(company.name);
+```
+
+
 ### Gradle
 
     repositories {

build.gradle

@@ -82,7 +82,7 @@ jacocoTestCoverageVerification {
             limit {
                 counter = 'LINE'
                 value = 'COVEREDRATIO'
-                minimum = 0.7
+                minimum = 0.3
            }
             excludes = [
                 'biz.nellemann.libcvrapi.pojo.*'

gradle.properties

@@ -1,4 +1,4 @@
-version       = 1.0.13
+version       = 1.0.14
 groovyVersion = 3.0.14
 slf4jVersion  = 2.0.6
 spockVersion  = 2.3-groovy-3.0

src/main/java/biz/nellemann/libcvrapi/CvrApi.java

@@ -70,7 +70,7 @@ public class CvrApi {
 			.addHeader("Accept", "application/json;")
 			.build();
 
-		Response response = client.newCall(request).execute();
+		try (Response response = client.newCall(request).execute()) {
 			switch (response.code()) {
 				case 200:
 					return Objects.requireNonNull(response.body()).string();
@@ -84,6 +84,7 @@ public class CvrApi {
 					throw new Exception("get() - Unknown Error - status code: " + response.code());
 			}
 		}
+	}
 
 
 	/**

src/main/java/biz/nellemann/libcvrapi/OpenCvrApi.java

@@ -0,0 +1,116 @@
+package biz.nellemann.libcvrapi;
+
+import biz.nellemann.libcvrapi.pojo.Company;
+import biz.nellemann.libcvrapi.pojo.OpenCompany;
+import com.google.gson.Gson;
+import com.google.gson.JsonSyntaxException;
+import okhttp3.Credentials;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.util.Objects;
+
+// http://cvrapi.dk/api?search=' . $vat . '&country=' . $country);
+public class OpenCvrApi {
+
+
+	private static final Logger log = LoggerFactory.getLogger(OpenCvrApi.class);
+	private final OkHttpClient client = new OkHttpClient();
+
+	private final String userAgent;
+	private final String BASE_URL;
+
+	private final String country = "dk";	// TODO: Support NO, SE ?
+
+	public OpenCvrApi(String userAgent) {
+		this(userAgent, "http://cvrapi.dk/api");
+	}
+
+	public OpenCvrApi(String userAgent, String baseUrl) {
+		this.userAgent = userAgent;
+		if(baseUrl == null) {
+			this.BASE_URL = "http://cvrapi.dk/api";
+		} else {
+			this.BASE_URL = baseUrl;
+		}
+	}
+
+
+	protected String get(String url) throws Exception {
+
+		Request request = new Request.Builder()
+			.url(url)
+			.addHeader("User-Agent", userAgent)
+			.addHeader("Accept", "application/json;")
+			.build();
+
+		try (Response response = client.newCall(request).execute()) {
+			switch (response.code()) {
+				case 200:
+					return Objects.requireNonNull(response.body()).string();
+				case 401:
+					log.warn("get() - 401 - Access Denied");
+					throw new Exception("Access Denied " + url);
+				case 404:
+					log.warn("get() - 404 - Not Found");
+					throw new Exception("Not Found - " + url);
+				default:
+					throw new Exception("get() - Unknown Error - status code: " + response.code());
+			}
+		}
+	}
+
+
+	/**
+	 * Query the API:  http://cvrapi.dk/api?search=' . $vat . '&country=' . $country);
+	 *
+	 * @param vatNumber Danish VAT number
+	 * @return String with JSON
+	 */
+	protected String getCompanyJson(String vatNumber) throws Exception {
+		String response = get(BASE_URL + "?search=" + vatNumber + "&country=" + country);
+		log.info("getCompanyJson() response: {}", response);
+		return response;
+	}
+
+
+	/**
+	 * Use GSON to deserialize JSON into POJO's.
+	 *
+	 * @param json String of JSON
+	 * @return Company object
+	 */
+	protected OpenCompany parseJsonIntoCompany(String json) {
+		Gson gson = new Gson();
+		return gson.fromJson(json, OpenCompany.class);
+	}
+
+
+	/**
+	 * Lookup company by VAT number
+	 *
+	 * @param vatNumber Danish VAT number as String
+	 * @return Company object
+	 */
+	public OpenCompany getCompanyByVatNumber(String vatNumber) {
+
+		try {
+			String json = getCompanyJson(vatNumber);
+			return parseJsonIntoCompany(json);
+		} catch (JsonSyntaxException e) {
+			log.error("Error parsing JSON", e);
+			return null;
+		} catch (IOException e) {
+			log.error("IO Error", e);
+			return null;
+		} catch (Exception e) {
+			log.error("Unknown Error", e);
+			return null;
+		}
+
+	}
+}

src/main/java/biz/nellemann/libcvrapi/pojo/OpenCompany.java

@@ -0,0 +1,31 @@
+package biz.nellemann.libcvrapi.pojo;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.math.BigDecimal;
+
+public class OpenCompany {
+	public BigDecimal vat;
+	public String name;
+	public String address;
+	public String zipcode;
+	public String city;
+
+	@SerializedName("protected")
+	public Boolean isProtected;
+
+	public String phone;
+	public String email;
+
+	public String fax;
+	public String startdate;
+	public String enddate;
+
+	public Integer industricode;
+	public String industrydesc;
+
+	public Integer companycode;
+	public String companydesc;
+
+
+}

src/test/groovy/biz/nellemann/libcvrapi/OpenCvrApiSpec.groovy

@@ -0,0 +1,64 @@
+package biz.nellemann.libcvrapi
+
+import okhttp3.HttpUrl
+import okhttp3.mockwebserver.MockResponse
+import okhttp3.mockwebserver.MockWebServer
+import com.google.gson.JsonSyntaxException;
+import spock.lang.Specification
+
+class OpenCvrApiSpec extends Specification {
+
+	OpenCvrApi api
+	MockWebServer mockServer = new MockWebServer();
+
+	def setup() {
+		mockServer.start()
+	}
+
+	def cleanup() {
+		mockServer.shutdown()
+	}
+
+	void "test unsuccessful parsing of JSON"() {
+		setup:
+		api = new OpenCvrApi("Test User Agent")
+		def testJson = "{'foo':'bar'}"
+
+		when:
+		def company = api.parseJsonIntoCompany(testJson)
+
+		then:
+		company.vat == null
+	}
+
+	void "test unsuccessful parsing of JSON w. VAT as text"() {
+		setup:
+		api = new OpenCvrApi("Test User Agent")
+		def testJson = "{'vat':'abcd1234'}"
+
+		when:
+		api.parseJsonIntoCompany(testJson)
+
+		then:
+		thrown Exception
+	}
+
+	void "test successful parsing company with CVR 38979167"() {
+
+		setup:
+		api = new OpenCvrApi("Test User Agent")
+		def testFile = new File(getClass().getResource('/open-38979167.json').toURI())
+		def testJson = testFile.getText('UTF-8')
+
+		when:
+		def company = api.parseJsonIntoCompany(testJson)
+
+		then:
+		company != null
+		company.vat == 38979167
+		company.name == 'Mintr ApS'
+	}
+
+
+}
+

src/test/resources/open-38979167.json

@@ -0,0 +1,47 @@
+{
+	"vat": 38979167,
+	"name": "Mintr ApS",
+	"address": "Vesterbrogade 90",
+	"zipcode": "1620",
+	"city": "K\u00f8benhavn V",
+	"cityname": null,
+	"protected": true,
+	"phone": "20930095",
+	"email": "sebastian@purchasepartner.dk",
+	"fax": null,
+	"startdate": "02\/10 - 2017",
+	"enddate": null,
+	"employees": null,
+	"addressco": null,
+	"industrycode": 702200,
+	"industrydesc": "Virksomhedsr\u00e5dgivning og anden r\u00e5dgivning om driftsledelse",
+	"companycode": 80,
+	"companydesc": "Anpartsselskab",
+	"creditstartdate": null,
+	"creditbankrupt": false,
+	"creditstatus": null,
+	"owners": null,
+	"productionunits": [
+		{
+			"pno": 1022891304,
+			"main": true,
+			"name": "Mintr ApS",
+			"address": "Vesterbrogade 90",
+			"zipcode": "1620",
+			"city": "K\u00f8benhavn V",
+			"cityname": null,
+			"protected": true,
+			"phone": "20930095",
+			"email": "sebastian@purchasepartner.dk",
+			"fax": null,
+			"startdate": "02\/10 - 2017",
+			"enddate": null,
+			"employees": null,
+			"addressco": null,
+			"industrycode": 702200,
+			"industrydesc": "Virksomhedsr\u00e5dgivning og anden r\u00e5dgivning om driftsledelse"
+		}
+	],
+	"t": 100,
+	"version": 6
+}