package info.globalcode.sql.dk;

 import static info.globalcode.sql.dk.Functions.isNotEmpty;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.List;

 /**

  *

  * @author Ing. František Kučera (frantovo.cz)

  */

 public class CLIOptions {

 	public static final String DEFAULT_NAME_PREFIX = ":";

 	private String sql;

 	private String databaseName;

 	private String namePrefix = DEFAULT_NAME_PREFIX;

 	private boolean batch;

 	public enum MODE {

 		QUERY_NOW,

 		PREPARE_BATCH,

 		EXECUTE_BATCH

 	}

 	public enum COMMAND_TYPE {

 		/** SELECT */

 		QUERY,

 		/** INSERT, UPDATE, DELETE */

 		UPDATE

 	};

 	private COMMAND_TYPE commandType;

 	private final Collection<NamedParameter> namedParameters = new ArrayList<>();

 	private final List<Parameter> numberedParameters = new ArrayList<>();

 	public void validate() throws InvalidOptionsException {

 		InvalidOptionsException e = new InvalidOptionsException();

 		if (getMode() == null) {

 			e.addProblem(new InvalidOptionsException.OptionProblem("Invalid combination of DB, SQL and BATCH – please specify just 2 of this 3 options"));

 		}

 		if (!namedParameters.isEmpty() && !numberedParameters.isEmpty()) {

 			e.addProblem(new InvalidOptionsException.OptionProblem("Named and numbered parameters can not be used together in one command."));

 		}

 		if (e.hasProblems()) {

 			throw e;

 		}

 	}

 	private boolean hasSql() {

 		return isNotEmpty(getSql(), true);

 	}

 	private boolean hasDb() {

 		return isNotEmpty(getDatabaseName(), true);

 	}

 	/**

 	 * Depends on options: DB, BATCH, SQL

 	 *

 	 * @return mode | or null if options are not yet initialized or combination of options is

 	 * invalid

 	 */

 	public MODE getMode() {

 		if (hasDb() && !batch && hasSql()) {

 			return MODE.QUERY_NOW;

 		} else if (!hasDb() && batch && hasSql()) {

 			return MODE.PREPARE_BATCH;

 		} else if (hasDb() && batch && !hasSql()) {

 			return MODE.EXECUTE_BATCH;

 		} else {

 			return null;

 		}

 	}

 	public String getSql() {

 		return sql;

 	}

 	public void setSql(String sql) {

 		this.sql = sql;

 	}

 	public String getDatabaseName() {

 		return databaseName;

 	}

 	public void setDatabaseName(String databaseName) {

 		this.databaseName = databaseName;

 	}

 	public void setBatch(boolean batch) {

 		this.batch = batch;

 	}

 	public COMMAND_TYPE getCommandType() {

 		return commandType;

 	}

 	public void setCommandType(COMMAND_TYPE commandType) {

 		this.commandType = commandType;

 	}

 	public Collection<NamedParameter> getNamedParameters() {

 		return namedParameters;

 	}

 	public List<Parameter> getNumberedParameters() {

 		return numberedParameters;

 	}

 	public void addNumberedParameter(Parameter p) {

 		numberedParameters.add(p);

 	}

 	public void addNamedParameter(NamedParameter p) {

 		namedParameters.add(p);

 	}

 	public String getNamePrefix() {

 		return namePrefix;

 	}

 	public void setNamePrefix(String namePrefix) {

 		this.namePrefix = namePrefix;

 	}

 }