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package com.ubidots;

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

import com.google.gson.Gson;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

public class ApiClient {
	
	private ServerBridge bridge;
	
	public ApiClient(String apiKey) {
		bridge = new ServerBridge(apiKey);
	}

	public ApiClient(String apiKey, String baseUrl) {
		bridge = new ServerBridge(apiKey, baseUrl);
	}

    public ApiClient() {}

	ServerBridge getServerBridge() {
		return bridge;
	}

    public ApiClient fromToken(String token) {
        bridge = new ServerBridge(token, true);
        return this;
    }

	public DataSource[] getDataSources() {
		String json = bridge.get("datasources");
		
		Gson gson = new Gson();
		List> rawDataSources = gson.fromJson(json, List.class);
		
		DataSource[] dataSources = new DataSource[rawDataSources.size()];
		
		for (int i = 0; i < rawDataSources.size(); i++) {
			dataSources[i] = new DataSource(rawDataSources.get(i), this);
		}

		return dataSources;
	}
	
	public DataSource getDataSource(String id) {
		String json = bridge.get("datasources/" + id);
		
		Gson gson = new Gson();
		Map rawDataSource = (Map) gson.fromJson(json, Map.class);
		
		if (rawDataSource.containsKey("detail"))
			return null;
		else
			return new DataSource(rawDataSource, this);
	}
	
	public DataSource createDataSource(String name) {
		return createDataSource(name, null, null);
	}
	
	public DataSource createDataSource(String name, Map context, List tags) {
		Map data = new HashMap();
		data.put("name", name);
		
		if (context != null) 
			data.put("context", context);
		
		if (tags != null)
			data.put("tags", tags);
		
		Gson gson = new Gson();
		String json = bridge.post("datasources/", gson.toJson(data));
		Map rawDataSource = (Map) gson.fromJson(json, Map.class);
		
		DataSource ds = new DataSource(rawDataSource, this);

		return ds;
	}
	
	public Variable[] getVariables() {
		String json = bridge.get("variables");
		
		Gson gson = new Gson();
		List> rawVariables = gson.fromJson(json, List.class);
		
		Variable[] variables = new Variable[rawVariables.size()];
		
		for (int i = 0; i < rawVariables.size(); i++) {
			variables[i] = new Variable(rawVariables.get(i), this);
		}
		
		return variables;
	}

	public Variable getVariable(String id) {
		String json = bridge.get("variables/" + id);
		
		Gson gson = new Gson();
		Map rawVariable = (Map) gson.fromJson(json, Map.class);
		
		if (rawVariable.containsKey("detail"))
			return null;
		else
			return new Variable(rawVariable, this);
	}

	// For testing
	void setServerBridge(ServerBridge bridge) {
		this.bridge = bridge;
	}
}