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    "(wheterAPI)=\n",
    "# Geoposición y Clima\n",
    "\n",
    "En este ejemplo se utilizan dos APIs: \n",
    "- [Geocoding API](https://openweathermap.org/api/geocoding-api): Dado el nombre de una ciudad retorna la latitud y longitud.\n",
    "- [Free Weather API](https://open-meteo.com/): Dada una latitud y longitud retorna el estado del clima (hora loca, temperatura actual, descripción del clima, etc).\n",
    "\n",
    "Código fuente <a href=\"../Codes/WeatherAPIData.java\">Weather.java</a>.\n",
    "\n",
    "## Dependencias de Maven"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "%%loadFromPOM\n",
    "<!-- https://mvnrepository.com/artifact/org.json/json -->\n",
    "<dependency>\n",
    "    <groupId>org.json</groupId>\n",
    "    <artifactId>json</artifactId>\n",
    "    <version>20240303</version>\n",
    "</dependency>"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Código de Java"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "// Tomado y adaptado de: https://www.youtube.com/watch?v=WS_H44tvZMI\n",
    "import org.json.JSONArray;\n",
    "import org.json.JSONObject;\n",
    "import org.json.JSONTokener;\n",
    "\n",
    "import java.io.IOException;\n",
    "import java.math.BigDecimal;\n",
    "import java.net.HttpURLConnection;\n",
    "import java.net.URI;\n",
    "import java.net.URL;\n",
    "import java.util.Scanner;\n",
    "\n",
    "public class WeatherAPIData {\n",
    "    public static void main(String[] args) {\n",
    "        try{\n",
    "            for(String city: args){\n",
    "                System.out.print(\"City Entered: %s\\n\".formatted(city));\n",
    "\n",
    "                BigDecimal[] coordenadas = getLocationData(city);\n",
    "                displayWeatherData(coordenadas);\n",
    "                //System.out.println(\"\");\n",
    "            }   \n",
    "\n",
    "        }catch(Exception e){\n",
    "            e.printStackTrace();\n",
    "        }\n",
    "    }\n",
    "\n",
    "    private static BigDecimal[] getLocationData(String city){\n",
    "        city = city.replaceAll(\" \", \"+\");\n",
    "        String urlString = \"https://geocoding-api.open-meteo.com/v1/search?name=\" +\n",
    "                city + \"&count=1&language=en&format=json\";\n",
    "        \n",
    "        try{\n",
    "            // 1. Fetch the API response based on API Link\n",
    "            HttpURLConnection apiConnection = fetchApiResponse(urlString);\n",
    "\n",
    "            // check for response status\n",
    "            // 200 - means that the connection was a success\n",
    "            if(apiConnection.getResponseCode() != 200){\n",
    "                System.out.println(\"Error: Could not connect to API\");\n",
    "                return null;\n",
    "            }\n",
    "\n",
    "            // 2. Read the response and convert store String type\n",
    "            URI uri = new URI(urlString);\n",
    "            JSONTokener jsonResponse = new JSONTokener(uri.toURL().openStream());\n",
    "\n",
    "            // 3. Parse the string into a JSON Object\n",
    "            JSONObject resultsJsonObj = new JSONObject(jsonResponse);\n",
    "\n",
    "            // 4. Retrieve Location Data\n",
    "            JSONArray locationData = (JSONArray) resultsJsonObj.get(\"results\");\n",
    "\n",
    "            // Get location data\n",
    "            JSONObject cityLocationData = (JSONObject) locationData.get(0);\n",
    "            BigDecimal latitude = (BigDecimal) cityLocationData.get(\"latitude\");\n",
    "            BigDecimal longitude = (BigDecimal) cityLocationData.get(\"longitude\");\n",
    "            \n",
    "            System.out.print(\"\"\"\n",
    "                - URL Geoposition: %s\n",
    "                    Longitude: %.2f\n",
    "                    Latitude: %.2f\n",
    "                    \"\"\".formatted(urlString, longitude.doubleValue(), latitude.doubleValue()));\n",
    "\n",
    "            BigDecimal[] coordenadas = {latitude, longitude};\n",
    "            return coordenadas;\n",
    "\n",
    "        }catch(Exception e){\n",
    "            e.printStackTrace();\n",
    "        }\n",
    "        return null;\n",
    "    }\n",
    "\n",
    "    private static void displayWeatherData(BigDecimal[] coordenadas ){\n",
    "        try{\n",
    "            BigDecimal latitude = coordenadas[0], longitude = coordenadas[1];\n",
    "            // 1. Fetch the API response based on API Link\n",
    "            String url = \"https://api.open-meteo.com/v1/forecast?latitude=\"+latitude+\"&longitude=\"+longitude+\"&current=temperature_2m,wind_speed_10m&hourly=temperature_2m,relative_humidity_2m,wind_speed_10m&format=json\";\n",
    "            //System.out.println(\" - URL Weather: \"+url);\n",
    "\n",
    "            HttpURLConnection apiConnection = fetchApiResponse(url);\n",
    "\n",
    "            // check for response status\n",
    "            // 200 - means that the connection was a success\n",
    "            if(apiConnection.getResponseCode() != 200){\n",
    "                System.out.println(\"Error: Could not connect to API\");\n",
    "                return;\n",
    "            }\n",
    "\n",
    "            // 2. Read the response and convert store String type\n",
    "            URI uri = new URI(url);\n",
    "            JSONTokener jsonResponse = new JSONTokener(uri.toURL().openStream());\n",
    "            \n",
    "            // 3. Parse the string into a JSON Object\n",
    "            JSONObject jsonObject = new JSONObject(jsonResponse);\n",
    "            JSONObject currentWeatherJson = (JSONObject) jsonObject.get(\"current\");\n",
    "\n",
    "            // 4. Store the data into their corresponding data type\n",
    "            String time = (String) currentWeatherJson.get(\"time\");\n",
    "            //System.out.println(\"    Current Time: \" + time);\n",
    "\n",
    "            BigDecimal temperature = (BigDecimal) currentWeatherJson.get(\"temperature_2m\");\n",
    "            // System.out.println(\"    Current Temperature (C): \" + temperature.doubleValue());\n",
    "\n",
    "            // long relativeHumidity = (long) currentWeatherJson.get(\"relative_humidity_2m\");\n",
    "            // System.out.println(\"Relative Humidity: \" + relativeHumidity);\n",
    "\n",
    "            BigDecimal windSpeed = (BigDecimal) currentWeatherJson.get(\"wind_speed_10m\");\n",
    "            // System.out.println(\"    Weather Description: \" + windSpeed.doubleValue()+\"\\n\");\n",
    "\n",
    "            System.out.print(\"\"\"\n",
    "                    - URL Weather: %s\n",
    "                        Current Time: %s\n",
    "                        Current Temperature (C): %.2f\n",
    "                        Weather Description: %.2f\n",
    "                    \"\"\".formatted(url, time, temperature.doubleValue(), windSpeed.doubleValue()));\n",
    "        }catch(Exception e){\n",
    "            e.printStackTrace();\n",
    "        }\n",
    "    }\n",
    "\n",
    "    private static HttpURLConnection fetchApiResponse(String urlString){\n",
    "        try{\n",
    "            // attempt to create connection\n",
    "            URL url = new URL(urlString);\n",
    "            HttpURLConnection conn = (HttpURLConnection) url.openConnection();\n",
    "\n",
    "            // set request method to get\n",
    "            conn.setRequestMethod(\"GET\");\n",
    "\n",
    "            return conn;\n",
    "        }catch(IOException e){\n",
    "            e.printStackTrace();\n",
    "        }\n",
    "\n",
    "        // could not make connection\n",
    "        return null;\n",
    "    }\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "City Entered: Bogota\n",
      "- URL Geoposition: https://geocoding-api.open-meteo.com/v1/search?name=Bogota&count=1&language=en&format=json\n",
      "    Longitude: -74,08\n",
      "    Latitude: 4,61\n",
      "- URL Weather: https://api.open-meteo.com/v1/forecast?latitude=4.60971&longitude=-74.08175&current=temperature_2m,wind_speed_10m&hourly=temperature_2m,relative_humidity_2m,wind_speed_10m&format=json\n",
      "    Current Time: 2024-11-20T05:45\n",
      "    Current Temperature (C): 12,700000\n",
      "    Weather Description: 4,500000\n",
      "\n",
      "City Entered: New York\n",
      "- URL Geoposition: https://geocoding-api.open-meteo.com/v1/search?name=New+York&count=1&language=en&format=json\n",
      "    Longitude: -74,01\n",
      "    Latitude: 40,71\n",
      "- URL Weather: https://api.open-meteo.com/v1/forecast?latitude=40.71427&longitude=-74.00597&current=temperature_2m,wind_speed_10m&hourly=temperature_2m,relative_humidity_2m,wind_speed_10m&format=json\n",
      "    Current Time: 2024-11-20T05:45\n",
      "    Current Temperature (C): 9,900000\n",
      "    Weather Description: 2,900000\n",
      "\n",
      "City Entered: Cali\n",
      "- URL Geoposition: https://geocoding-api.open-meteo.com/v1/search?name=Cali&count=1&language=en&format=json\n",
      "    Longitude: -76,52\n",
      "    Latitude: 3,44\n",
      "- URL Weather: https://api.open-meteo.com/v1/forecast?latitude=3.43722&longitude=-76.5225&current=temperature_2m,wind_speed_10m&hourly=temperature_2m,relative_humidity_2m,wind_speed_10m&format=json\n",
      "    Current Time: 2024-11-20T05:45\n",
      "    Current Temperature (C): 19,500000\n",
      "    Weather Description: 1,800000\n",
      "\n"
     ]
    }
   ],
   "source": [
    "// Probado la clase WeatherAPIData\n",
    "String [] ciudades = {\"Bogota\", \"New York\", \"Cali\"};\n",
    "new WeatherAPIData().main(ciudades);"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Descripción del Código\n",
    "\n",
    "\n",
    "\n",
    "## Recursos Adicionales\n",
    "\n",
    "- [How to perform API calls in Java - Weather Forecast API Example](https://www.youtube.com/watch?v=WS_H44tvZMI)\n",
    "- [Java-Tutorials/WeatherAPIData.java - GitHub](https://github.com/curadProgrammer/Java-Tutorials/blob/main/WeatherAPIData.java)"
   ]
  }
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