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package io.mstream.trader.commons.config.model;


import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import io.mstream.trader.commons.utils.Preconditions;

import static java.lang.String.format;


public class BaseUrl {
    
    private final String url;
    
    private final boolean verifyCertificate;
    
    @JsonCreator
    public BaseUrl(
            @JsonProperty(
                    value = "protocol",
                    required = true
            )
                    String protocol,
            @JsonProperty(
                    value = "host",
                    required = true
            )
                    String host,
            @JsonProperty(
                    value = "port"
            )
                    Integer port,
            @JsonProperty(
                    value = "basePath"
            )
                    String basePath,
            @JsonProperty(
                    value = "verifyCertificate"
            )
                    Boolean verifyCertificate
    ) {
    
        Preconditions.checkNotEmpty("protocol", protocol);
        Preconditions.checkNotEmpty("host", host);
        url = format(
                "%s://%s:%d%s",
                protocol,
                host,
                defaultPort(port, protocol),
                defaultBasePath(basePath)
        );
        this.verifyCertificate =
                defaultVerifyCertificate(
                        verifyCertificate,
                        protocol
                );
    }
    
    private int defaultPort(Integer port, String protocol) {
        
        if (port != null) {
            return port;
        }
        switch (protocol) {
            case "http":
                return 80;
            case "https":
                return 443;
            default:
                throw new IllegalArgumentException(
                        format(
                                "can't guess the default port for %s protocol",
                                protocol
                        )
                );
        }
    }
    
    private String defaultBasePath(String basePath) {
        
        return basePath == null ?
                "" :
                basePath;
    }
    
    private boolean defaultVerifyCertificate(
            Boolean verifyCertificate,
            String protocol
    ) {
        
        if (verifyCertificate != null) {
            return verifyCertificate;
        }
        switch (protocol) {
            case "https":
                return true;
            default:
                return false;
        }
    }
    
    public String url() {
    
        return url;
    }
    
    public boolean isVerifyCertificate() {
        
        return verifyCertificate;
    }
}