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| 1 | +/* |
| 2 | + * EJERCICIO: |
| 3 | + * Utilizando un mecanismo de peticiones HTTP de tu lenguaje, realiza |
| 4 | + * una petición a la web que tú quieras, verifica que dicha petición |
| 5 | + * fue exitosa y muestra por consola el contenido de la web. |
| 6 | + * |
| 7 | + * DIFICULTAD EXTRA (opcional): |
| 8 | + * Utilizando la PokéAPI (https://pokeapi.co), crea un programa por |
| 9 | + * terminal al que le puedas solicitar información de un Pokémon concreto |
| 10 | + * utilizando su nombre o número. |
| 11 | + * - Muestra el nombre, id, peso, altura y tipo(s) del Pokémon |
| 12 | + * - Muestra el nombre de su cadena de evoluciones |
| 13 | + * - Muestra los juegos en los que aparece |
| 14 | + * - Controla posibles errores |
| 15 | + */ |
| 16 | + |
| 17 | +import java.io.IOException; |
| 18 | +import java.net.URI; |
| 19 | +import java.net.http.HttpClient; |
| 20 | +import java.net.http.HttpRequest; |
| 21 | +import java.net.http.HttpResponse; |
| 22 | +import java.util.Scanner; |
| 23 | + |
| 24 | +public class JimsimroDev { |
| 25 | + private static final String URL_BASE = "https://pokeapi.co/api/v2/pokemon/"; |
| 26 | + |
| 27 | + String consumirApi(String url) { |
| 28 | + HttpClient client = HttpClient.newHttpClient(); |
| 29 | + HttpRequest request = HttpRequest.newBuilder() |
| 30 | + .uri(URI.create(url)) |
| 31 | + .build(); |
| 32 | + HttpResponse<String> response = null; |
| 33 | + |
| 34 | + try { |
| 35 | + response = client.send(request, HttpResponse.BodyHandlers.ofString()); |
| 36 | + } catch (IOException e) { |
| 37 | + throw new RuntimeException(e); |
| 38 | + } catch (InterruptedException e) { |
| 39 | + throw new RuntimeException(e); |
| 40 | + } |
| 41 | + if (response.statusCode() == 200) { |
| 42 | + IO.println("Respuesta exitosa codigo: " + response.statusCode()); |
| 43 | + String json = response.body(); |
| 44 | + return json; |
| 45 | + } |
| 46 | + throw new RuntimeException("Eror al procesar la solicitud codigo de error " + response.statusCode()); |
| 47 | + } |
| 48 | + |
| 49 | + // Busca campo en la Raiz |
| 50 | + private String getCampo(StringBuilder data, String campo) { |
| 51 | + String patron = "\"" + campo + "\":"; |
| 52 | + int inicio = data.indexOf(patron); |
| 53 | + if (inicio != -1) { |
| 54 | + inicio += patron.length(); |
| 55 | + while (inicio < data.length() && Character.isWhitespace(data.charAt(inicio))) { |
| 56 | + inicio++; |
| 57 | + } |
| 58 | + if (inicio < data.length()) { |
| 59 | + if (data.charAt(inicio) == '"') { |
| 60 | + inicio++; |
| 61 | + int fin = data.indexOf("\"", inicio); |
| 62 | + if (fin != -1) { |
| 63 | + return data.substring(inicio, fin); |
| 64 | + } |
| 65 | + } else { |
| 66 | + int fin = inicio; |
| 67 | + while (fin < data.length() && |
| 68 | + data.charAt(fin) != ',' && |
| 69 | + data.charAt(fin) != '}' && |
| 70 | + data.charAt(fin) != '\n') { |
| 71 | + fin++; |
| 72 | + } |
| 73 | + return data.substring(inicio, fin).trim(); |
| 74 | + } |
| 75 | + } |
| 76 | + } |
| 77 | + return null; |
| 78 | + } |
| 79 | + |
| 80 | + // Busca campo en una sección dada |
| 81 | + private String getCampo(StringBuilder data, String seccion, String campo) { |
| 82 | + int indiceSeccion = data.indexOf("\"" + seccion + "\""); |
| 83 | + if (indiceSeccion != -1) { |
| 84 | + String patron = "\"" + campo + "\":\""; |
| 85 | + int indiceCampo = data.indexOf(patron, indiceSeccion); |
| 86 | + |
| 87 | + if (indiceCampo != -1) { |
| 88 | + int empiezaValor = indiceCampo + patron.length(); |
| 89 | + int terminaValor = data.indexOf("\"", empiezaValor); |
| 90 | + return data.substring(empiezaValor, terminaValor); |
| 91 | + } |
| 92 | + } |
| 93 | + return null; |
| 94 | + } |
| 95 | + |
| 96 | + // Busca los typos |
| 97 | + private String[] getTypes(StringBuilder data) { |
| 98 | + String tiposPattern = "\"types\":["; |
| 99 | + int startIndex = data.indexOf(tiposPattern); |
| 100 | + if (startIndex != -1) { |
| 101 | + startIndex += tiposPattern.length(); |
| 102 | + int endIdex = data.indexOf("]", startIndex); |
| 103 | + if (endIdex != -1) { |
| 104 | + String tiposArray = data.substring(startIndex, endIdex); |
| 105 | + String[] tipos = tiposArray.split("},"); |
| 106 | + String[] resultados = new String[tipos.length]; |
| 107 | + // Procesar cada tipo |
| 108 | + for (int i = 0; i < tipos.length; i++) { |
| 109 | + String tipo = tipos[i]; |
| 110 | + String namePattern = "\"name\":\""; |
| 111 | + int nameStart = tipo.indexOf(namePattern); |
| 112 | + if (nameStart != -1) { |
| 113 | + nameStart += namePattern.length(); |
| 114 | + int nameEnd = tipo.indexOf("\"", nameStart); |
| 115 | + if (nameEnd != -1) { |
| 116 | + resultados[i] = tipo.substring(nameStart, nameEnd); |
| 117 | + } |
| 118 | + } |
| 119 | + } |
| 120 | + return resultados; |
| 121 | + } |
| 122 | + } |
| 123 | + return new String[0]; |
| 124 | + } |
| 125 | + |
| 126 | + private String getEvolutionChainUrl(StringBuilder data) { |
| 127 | + String patron = "\"evolution_chain\":{\"url\":\""; |
| 128 | + int inicio = data.indexOf(patron); |
| 129 | + if (inicio != -1) { |
| 130 | + inicio += patron.length(); |
| 131 | + int fin = data.indexOf("\"", inicio); |
| 132 | + if (fin != -1) { |
| 133 | + return data.substring(inicio, fin); |
| 134 | + } |
| 135 | + } |
| 136 | + return null; |
| 137 | + } |
| 138 | + |
| 139 | + void evolution_chain(StringBuilder data) { |
| 140 | + // Obtener el nombre de la especie actual |
| 141 | + String speciesName = getCampo(data, "species", "name"); |
| 142 | + IO.println("Evolución: " + speciesName); |
| 143 | + |
| 144 | + // Buscar el patrón de evolves_to |
| 145 | + String evolvesToPattern = "\"evolves_to\":["; |
| 146 | + int evolvesToIndex = data.indexOf(evolvesToPattern); |
| 147 | + |
| 148 | + if (evolvesToIndex != -1) { |
| 149 | + // Si encontramos evolves_to y no está vacío |
| 150 | + evolvesToIndex += evolvesToPattern.length(); |
| 151 | + if (data.charAt(evolvesToIndex) != ']') { |
| 152 | + // Obtener el contenido del evolves_to |
| 153 | + int endIndex = findMatchingBracket(data, evolvesToIndex); |
| 154 | + if (endIndex != -1) { |
| 155 | + // Crear un nuevo StringBuilder con el contenido de evolves_to |
| 156 | + StringBuilder evolvesTo = new StringBuilder( |
| 157 | + data.substring(evolvesToIndex, endIndex)); |
| 158 | + // Llamada recursiva con el nuevo contenido |
| 159 | + evolution_chain(evolvesTo); |
| 160 | + } |
| 161 | + } |
| 162 | + } |
| 163 | + } |
| 164 | + |
| 165 | + // Método auxiliar para encontrar el corchete de cierre correspondiente |
| 166 | + private int findMatchingBracket(StringBuilder data, int startIndex) { |
| 167 | + int count = 1; |
| 168 | + for (int i = startIndex; i < data.length(); i++) { |
| 169 | + if (data.charAt(i) == '[') |
| 170 | + count++; |
| 171 | + if (data.charAt(i) == ']') |
| 172 | + count--; |
| 173 | + if (count == 0) |
| 174 | + return i; |
| 175 | + } |
| 176 | + return -1; |
| 177 | + } |
| 178 | + |
| 179 | + void main() { |
| 180 | + Scanner in = new Scanner(System.in); |
| 181 | + |
| 182 | + // HttpClient client = HttpClient.newHttpClient(); |
| 183 | + // |
| 184 | + // HttpRequest request = HttpRequest.newBuilder() |
| 185 | + // .uri(URI.create("https://www.mercadolibre.com.co/")) |
| 186 | + // .build(); |
| 187 | + // HttpResponse<String> response = null; |
| 188 | + // |
| 189 | + // try { |
| 190 | + // response = client.send(request, HttpResponse.BodyHandlers.ofString()); |
| 191 | + // } catch (IOException e) { |
| 192 | + // throw new RuntimeException(e); |
| 193 | + // } catch (InterruptedException e) { |
| 194 | + // throw new RuntimeException(e); |
| 195 | + // } |
| 196 | + // String json = response.body(); |
| 197 | + // IO.println("Estado " + response.statusCode()); |
| 198 | + // IO.println(json); |
| 199 | + |
| 200 | + IO.println("Ingresa el nombre del pokemon a consultar"); |
| 201 | + String pokemon = in.nextLine(); |
| 202 | + |
| 203 | + StringBuilder data = new StringBuilder(); |
| 204 | + StringBuilder url = new StringBuilder(); |
| 205 | + |
| 206 | + data.append(consumirApi(URL_BASE + pokemon)); |
| 207 | + |
| 208 | + String nombre = getCampo(data, "name"); |
| 209 | + |
| 210 | + String id = getCampo(data, "id"); |
| 211 | + |
| 212 | + String peso = getCampo(data, "weight"); |
| 213 | + |
| 214 | + String altura = getCampo(data, "height"); |
| 215 | + String[] tipos = getTypes(data); |
| 216 | + |
| 217 | + String urlSpecies = getCampo(data, "species", "url"); |
| 218 | + |
| 219 | + url.append(consumirApi(urlSpecies)); |
| 220 | + String urlEvolucion = getEvolutionChainUrl(url); |
| 221 | + |
| 222 | + // StringBuilder evolution = new StringBuilder(); |
| 223 | + // String evolucin = getCampo(evolution, "species", "name"); |
| 224 | + // IO.println("url evloucion " + evolution); |
| 225 | + // IO.println("evolution" + evolucin); |
| 226 | + |
| 227 | + StringBuilder evolutionData = new StringBuilder(consumirApi(urlEvolucion)); |
| 228 | + evolution_chain(evolutionData); |
| 229 | + IO.println("Nombre: " + nombre); |
| 230 | + IO.println("ID: " + id); |
| 231 | + IO.println("Peso: " + peso); |
| 232 | + IO.println("Altura: " + altura); |
| 233 | + IO.println("Tipos:"); |
| 234 | + for (String tipo : tipos) { |
| 235 | + IO.println("- " + tipo); |
| 236 | + } |
| 237 | + in.close(); |
| 238 | + } |
| 239 | +} |
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