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sierisimosierisimo
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Funciones de transformacion y ejecucion final
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‎jobs-search-reporter/build.gradle‎

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@@ -14,6 +14,7 @@ sourceCompatibility = 1.8
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//Nuestra clase principal.
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application {
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mainClassName = "com.platzi.jobsearch.JobSearch"
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applicationName = "job-search"
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}
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repositories {

‎jobs-search-reporter/src/main/java/com/platzi/jobsearch/CommanderFunctions.java‎

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package com.platzi.jobsearch;
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import com.beust.jcommander.JCommander;
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import com.beust.jcommander.ParameterException;
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import java.util.List;
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import java.util.Optional;
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import java.util.function.Supplier;
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public interface CommanderFunctions {
@@ -34,4 +37,30 @@ static <T> JCommander buildCommanderWithName(String name, Supplier<T> argumentsS
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jCommander.setProgramName(name);
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return jCommander;
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}
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/**
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* Funcion utilizada para tomar los datos de JCommander, los argumentos esperados y en caso de que algo falle,
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* una funcion con el JCommander que genero el error.
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*/
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static Optional<List<Object>> parseArguments(
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JCommander jCommander,
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String[] arguments,
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OnCommandError onCommandError
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) {
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List<Object> result;
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try {
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jCommander.parse(arguments);
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return Optional.of(jCommander.getObjects());
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} catch (ParameterException exception) {
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onCommandError.onError(jCommander);
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}
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return Optional.empty();
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}
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@FunctionalInterface
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interface OnCommandError {
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void onError(JCommander jCommander);
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}
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}

‎jobs-search-reporter/src/main/java/com/platzi/jobsearch/JobPosition.java‎

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package com.platzi.jobsearch;
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import com.google.gson.annotations.SerializedName;
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import java.util.Objects;
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/**
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* Clase que representa los resultados de una busqueda
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*/
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public final class JobPosition {
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private String id;
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private String type;
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private String ulr;
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@SerializedName("created_at")
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private String createdAt;
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private String company;
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@SerializedName("company_url")
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private String companyUrl;
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private String location;
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private String title;
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private String description;
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@SerializedName("how_to_apply")
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private String howToApply;
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@SerializedName("company_logo")
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private String companyLogo;
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public String getId() {
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return id;
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}
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public void setId(String id) {
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this.id = id;
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}
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public String getType() {
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return type;
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}
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public void setType(String type) {
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this.type = type;
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}
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public String getUlr() {
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return ulr;
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}
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public void setUlr(String ulr) {
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this.ulr = ulr;
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}
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public String getCreatedAt() {
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return createdAt;
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}
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public void setCreatedAt(String createdAt) {
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this.createdAt = createdAt;
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}
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public String getCompany() {
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return company;
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}
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public void setCompany(String company) {
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this.company = company;
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}
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public String getCompanyUrl() {
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return companyUrl;
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}
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public void setCompanyUrl(String companyUrl) {
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this.companyUrl = companyUrl;
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}
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public String getLocation() {
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return location;
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}
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public void setLocation(String location) {
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this.location = location;
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}
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public String getTitle() {
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return title;
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}
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public void setTitle(String title) {
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this.title = title;
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}
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public String getDescription() {
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return description;
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}
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public void setDescription(String description) {
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this.description = description;
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}
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public String getHowToApply() {
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return howToApply;
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}
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public void setHowToApply(String howToApply) {
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this.howToApply = howToApply;
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}
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public String getCompanyLogo() {
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return companyLogo;
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}
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public void setCompanyLogo(String companyLogo) {
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this.companyLogo = companyLogo;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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JobPosition that = (JobPosition) o;
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return getId().equals(that.getId()) &&
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getType().equals(that.getType()) &&
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getUlr().equals(that.getUlr()) &&
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getCreatedAt().equals(that.getCreatedAt()) &&
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getCompany().equals(that.getCompany()) &&
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Objects.equals(getCompanyUrl(), that.getCompanyUrl()) &&
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Objects.equals(getLocation(), that.getLocation()) &&
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getTitle().equals(that.getTitle()) &&
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Objects.equals(getDescription(), that.getDescription()) &&
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Objects.equals(getHowToApply(), that.getHowToApply()) &&
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Objects.equals(getCompanyLogo(), that.getCompanyLogo());
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}
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@Override
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public int hashCode() {
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return Objects.hash(getId(), getType(), getUlr(), getCreatedAt(), getCompany(), getCompanyUrl(), getLocation(), getTitle(), getDescription(), getHowToApply(), getCompanyLogo());
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}
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@Override
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public String toString() {
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return "JobPosition{" +
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"id='" + id + '\'' +
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", type='" + type + '\'' +
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", ulr='" + ulr + '\'' +
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", createdAt='" + createdAt + '\'' +
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", company='" + company + '\'' +
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", companyUrl='" + companyUrl + '\'' +
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", location='" + location + '\'' +
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", title='" + title + '\'' +
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", description='" + description + '\'' +
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", howToApply='" + howToApply + '\'' +
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", companyLogo='" + companyLogo + '\'' +
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'}';
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}
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}

‎jobs-search-reporter/src/main/java/com/platzi/jobsearch/JobSearch.java‎

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package com.platzi.jobsearch;
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import com.beust.jcommander.JCommander;
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import com.platzi.jobsearch.api.JobsAPI;
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import com.platzi.jobsearch.cli.CLIArguments;
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import com.platzi.jobsearch.cli.CLIFunctions;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Map;
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import java.util.Optional;
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import java.util.stream.Stream;
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import static com.platzi.jobsearch.CommanderFunctions.buildCommanderWithName;
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import static com.platzi.jobsearch.CommanderFunctions.parseArguments;
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import static com.platzi.jobsearch.api.APIFunctions.buildAPI;
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public class JobSearch {
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public static void main(String[] args) {
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//Creacion de nuestro CLI con JCommander
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JCommander jCommander = buildCommanderWithName("job-search", CLIArguments::newInstance);
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//Obtenemos las opciones que se le dieron a JCommander
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Stream<CLIArguments> streamOfCLI =
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//Nos retorna un Optional<List<Object>>
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parseArguments(jCommander, args, JCommander::usage)
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//En caso de un Optional.empty()
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.orElse(Collections.emptyList())
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.stream()
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.map(obj -> (CLIArguments) obj);
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//Tomamos nuestro Stream y obtenemos las opciones que se dieron en el CLI
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Optional<CLIArguments> cliOptional = streamOfCLI
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//Solo nos interesan los casos donde no sea la solicitud de ayuda
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.filter(cli -> !cli.isHelp())
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//Y que contengan un keyword, en otros caso no tenemos que buscar
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.filter(cli -> cli.getKeyword() != null)
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.findFirst();
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//Si el Optional tiene un dato, lo convertimos a Map<String,Object>
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cliOptional.map(CLIFunctions::toMap)
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//Convertimos el Map en un request
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.map(JobSearch::executeRequest)
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//Aun seguimos operando sobre un Optional… en caso de que no hubiera datos
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//Generamos un stream vacio
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.orElse(Stream.empty())
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//Imprimos los datos por pantalla.
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.forEach(System.out::println);
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}
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private static Stream<JobPosition> executeRequest(Map<String, Object> options) {
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JobsAPI api = buildAPI(JobsAPI.class, "https://jobs.github.com");
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return Stream.of(options)
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.map(api::jobs)
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.flatMap(Collection::stream);
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}
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}

‎jobs-search-reporter/src/main/java/com/platzi/jobsearch/api/JobsAPI.java‎

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package com.platzi.jobsearch.api;
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import com.platzi.jobsearch.JobPosition;
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import feign.Headers;
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import feign.Param;
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import feign.QueryMap;
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import feign.RequestLine;
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import java.util.List;
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import java.util.Map;
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/**
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* Esta interfaz sera usada por Feign para hacer las peticiones a la API de github.
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*/
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@Headers("Accept: application/json")
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public interface JobsAPI {
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@RequestLine("GET /positions.json")
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List<JobPosition> jobs(@QueryMap Map<String, Object> queryMap);
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@RequestLine("GET /positions/{id}.json")
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JobPosition job(@Param("id") String id);
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}

‎jobs-search-reporter/src/main/java/com/platzi/jobsearch/cli/CLIFunctions.java‎

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package com.platzi.jobsearch.cli;
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import java.util.HashMap;
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import java.util.Map;
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public interface CLIFunctions {
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/**
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* Funcion que tomara los argumentos del CLI y los convertira en algo que se pueda
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* usar en la API de github.
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*/
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static Map<String, Object> toMap(CLIArguments cliArguments) {
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Map<String, Object> params = new HashMap<>();
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params.put("description", cliArguments.getKeyword());
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params.put("location", cliArguments.getLocation());
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params.put("full_time", cliArguments.isFullTime());
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params.put("page", cliArguments.getPage());
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if (cliArguments.isMarkdown()) {
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params.put("markdown", true);
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}
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return params;
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}
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}

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