<?php
/**
 * webtrees: online genealogy
 * Copyright (C) 2017 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

namespace Fisharebest\Webtrees\Census;

use Fisharebest\Webtrees\Date;
use Fisharebest\Webtrees\Individual;

/**
 * Marital status.
 */
abstract class AbstractCensusColumnCondition extends AbstractCensusColumn implements CensusColumnInterface {
	/* Text to display for married males */
	protected $husband = '';

	/* Text to display for married females */
	protected $wife = '';

	/* Text to display for unmarried males */
	protected $bachelor = '';

	/* Text to display for unmarried females */
	protected $spinster = '';

	/* Text to display for male children */
	protected $boy = '';

	/* Text to display for female children */
	protected $girl = '';

	/* Text to display for divorced males */
	protected $divorce = '';

	/* Text to display for divorced females */
	protected $divorcee = '';

	/* Text to display for widowed males */
	protected $widower = '';

	/* Text to display for widowed females */
	protected $widow = '';

	/* At what age is this individual recorded as an adult */
	protected $age_adult = 15;

	/**
	 * Generate the likely value of this census column, based on available information.
	 *
	 * @param Individual $individual
	 * @param Individual $head
	 *
	 * @return string
	 */
	public function generate(Individual $individual, Individual $head = null) {
		$family = $this->spouseFamily($individual);
		$sex    = $individual->getSex();

		if ($family === null || count($family->getFacts('MARR')) === 0) {
			if ($this->isChild($individual)) {
				return $this->conditionChild($sex);
			} else {
				return $this->conditionSingle($sex);
			}
		} elseif (count($family->getFacts('DIV')) > 0) {
			return $this->conditionDivorced($sex);
		} else {
			$spouse = $family->getSpouse($individual);
			if ($spouse instanceof Individual && $this->isDead($spouse)) {
				return $this->conditionWidowed($sex);
			} else {
				return $this->conditionMarried($sex);
			}
		}
	}

	/**
	 * Is the individual a child.
	 *
	 * @param Individual $individual
	 *
	 * @return bool
	 */
	private function isChild(Individual $individual) {
		$age = (int) Date::getAge($individual->getEstimatedBirthDate(), $this->date(), 0);

		return $age < $this->age_adult;
	}

	/**
	 * How is this condition written in a census column.
	 *
	 * @param string $sex
	 *
	 * @return string
	 */
	private function conditionChild($sex) {
		if ($sex === 'F') {
			return $this->girl;
		} else {
			return $this->boy;
		}
	}

	/**
	 * How is this condition written in a census column.
	 *
	 * @param string $sex
	 *
	 * @return string
	 */
	private function conditionSingle($sex) {
		if ($sex === 'F') {
			return $this->spinster;
		} else {
			return $this->bachelor;
		}
	}

	/**
	 * How is this condition written in a census column.
	 *
	 * @param string $sex
	 *
	 * @return string
	 */
	private function conditionDivorced($sex) {
		if ($sex === 'F') {
			return $this->divorcee;
		} else {
			return $this->divorce;
		}
	}

	/**
	 * Is the individual dead.
	 *
	 * @param Individual $individual
	 *
	 * @return bool
	 */
	private function isDead(Individual $individual) {
		return $individual->getDeathDate()->isOK() && Date::compare($individual->getDeathDate(), $this->date()) < 0;
	}

	/**
	 * How is this condition written in a census column.
	 *
	 * @param string $sex
	 *
	 * @return string
	 */
	private function conditionWidowed($sex) {
		if ($sex === 'F') {
			return $this->widow;
		} else {
			return $this->widower;
		}
	}

	/**
	 * How is this condition written in a census column.
	 *
	 * @param string $sex
	 *
	 * @return string
	 */
	private function conditionMarried($sex) {
		if ($sex === 'F') {
			return $this->wife;
		} else {
			return $this->husband;
		}
	}
}
