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package com.barchart.ondemand.api;

import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang.StringUtils;

import com.barchart.ondemand.api.responses.FuturesOptions;

public class FuturesOptionsRequest implements OnDemandRequest {

	public enum FuturesOptionsRequestType {
		CALLS("Call"), PUTS("Puts"), ALL("");

		private final String value;

		private FuturesOptionsRequestType(String value) {
			this.value = value;
		}

		public String getValue() {
			return value;
		}

		public static String getValue(FuturesOptionsRequestType field) {
			if (field == null) {
				return "";
			}

			return field.getValue();
		}
	}

	private final String symbols;
	private final String fields;

	private final Map params = new HashMap();

	private FuturesOptionsRequest(final Builder b) {

		this.symbols = StringUtils.join(b.symbols, ",");

		this.fields = "";

		final String type = FuturesOptionsRequestType.getValue(b.type);

		if (!type.isEmpty()) {
			params.put("type", b.type);
		}

		if (b.contract != null) {
			params.put("contract", b.contract);
		}

		if (b.root != null) {
			params.put("root", b.root);
		}
	}

	@Override
	public String endpoint() {

		return "getFuturesOptions.json";
	}

	@Override
	public String name() {

		return "Futures Options";
	}

	@Override
	public Map parameters() {

		if (!symbols.isEmpty()) {
			params.put("symbols", symbols);
		}

		if (!fields.isEmpty()) {
			params.put("fields", fields);
		}

		return params;
	}

	@Override
	public Class responseType() {
		return FuturesOptions.class;
	}

	public static class Builder {

		private String[] symbols = new String[] {};
		private FuturesOptionsRequestType type;
		private String root;
		private String contract;

		public Builder symbols(final String[] symbols) {
			this.symbols = symbols;
			return this;
		}

		public Builder root(final String root) {
			this.root = root;
			return this;
		}

		public Builder contract(final String contract) {
			this.contract = contract;
			return this;
		}

		public FuturesOptionsRequest build() {
			return new FuturesOptionsRequest(this);
		}
	}

}