Add GB calculation

includes/admin/post-types/meta-boxes/class-sp-meta-box-equation.php

@@ -41,6 +41,7 @@ class SP_Meta_Box_Equation {
 					break;
 				case 'outcome':
 					$options[ 'Outcomes' ] = self::optgroup( 'sp_outcome' );
+					$options[ 'Outcomes' ]['$gb'] = __( 'Games Back', 'sportspress' );
 					$options[ 'Outcomes' ]['$streak'] = __( 'Streak', 'sportspress' );
 					$options[ 'Outcomes' ]['$last5'] = __( 'Last 5', 'sportspress' );
 					$options[ 'Outcomes' ]['$last10'] = __( 'Last 10', 'sportspress' );

includes/class-sp-league-table.php

@@ -325,6 +325,9 @@ class SP_League_Table extends SP_Custom_Post{
 		// Sort priorities in descending order
 		ksort( $this->priorities );
 
+		// Initialize games back column variable
+		$gb_column = null;
+
 		// Fill in empty placeholder values for each team
 		foreach ( $team_ids as $team_id ):
 			if ( ! $team_id )
@@ -342,7 +345,10 @@ class SP_League_Table extends SP_Custom_Post{
 						// Solve
 						$placeholder = sp_solve( $stat->equation, sp_array_value( $totals, $team_id, array() ), $stat->precision );
 
-						if ( ! in_array( $stat->equation, array( '$streak', '$last5', '$last10' ) ) ):
+						if ( '$gamesback' == $stat->equation )
+							$gb_column = $stat->post_name;
+
+						if ( ! in_array( $stat->equation, array( '$gamesback', '$streak', '$last5', '$last10' ) ) ):
 							// Adjustments
 							$adjustment = sp_array_value( $adjustments, $team_id, array() );
 
@@ -358,6 +364,59 @@ class SP_League_Table extends SP_Custom_Post{
 			endforeach;
 		endforeach;
 
+		// Find win and loss variables for games back
+		$w = $l = null;
+		if ( $gb_column ) {
+			$args = array(
+				'post_type' => 'sp_outcome',
+				'numberposts' => 1,
+				'posts_per_page' => 1,
+				'meta_query' => array(
+					array(
+						'key' => 'sp_condition',
+						'value' => '>',
+					),
+				),
+			);
+			$outcomes = get_posts( $args );
+
+			if ( $outcomes ) {
+				$outcome = reset( $outcomes );
+				if ( is_array( $stats ) ) {
+					foreach ( $stats as $stat ) {
+						if ( '$' . $outcome->post_name == $stat->equation ) {
+							$w = $stat->post_name;
+						}
+					}
+				}
+			}
+
+			// Calculate games back
+			$args = array(
+				'post_type' => 'sp_outcome',
+				'numberposts' => 1,
+				'posts_per_page' => 1,
+				'meta_query' => array(
+					array(
+						'key' => 'sp_condition',
+						'value' => '<',
+					),
+				),
+			);
+			$outcomes = get_posts( $args );
+
+			if ( $outcomes ) {
+				$outcome = reset( $outcomes );
+				if ( is_array( $stats ) ) {
+					foreach ( $stats as $stat ) {
+						if ( '$' . $outcome->post_name == $stat->equation ) {
+							$l = $stat->post_name;
+						}
+					}
+				}
+			}
+		}
+
 		// Merge the data and placeholders arrays
 		$merged = array();
 
@@ -395,8 +454,10 @@ class SP_League_Table extends SP_Custom_Post{
 		endforeach;
 		
 		if ( $admin ):
+			$this->add_gb( $placeholders, $w, $l, $gb_column );
 			return array( $columns, $usecolumns, $data, $placeholders, $merged );
 		else:
+			$this->add_gb( $merged, $w, $l, $gb_column );
 			if ( ! is_array( $usecolumns ) )
 				$usecolumns = array();
 			$labels = array_merge( array( 'pos' => __( 'Pos', 'sportspress' ), 'name' => __( 'Team', 'sportspress' ) ), $columns );
@@ -467,4 +528,30 @@ class SP_League_Table extends SP_Custom_Post{
 		// Repeat position if equal
 		return $this->pos;
 	}
+
+
+	/**
+	 * Calculate and add games back.
+	 *
+	 * @param array $a
+	 * @param string $w
+	 * @param string $l
+	 * @param string $column
+	 * @return null
+	 */
+	public function add_gb( &$a, $w = null, $l = null, $column ) {
+		if ( ! is_array( $a ) ) return;
+		if ( ! $w && ! $l ) return;
+
+		foreach ( $a as $team_id => $values ) {
+			if ( isset( $leader ) ) {
+				$gb = ( sp_array_value( $leader, $w, 0 ) - sp_array_value( $values, $w, 0 ) + sp_array_value( $values, $l, 0 ) - sp_array_value( $leader, $l, 0 ) ) / 2;
+				if ( '-' == sp_array_value( $values, $column ) ) {
+					$a[ $team_id ][ $column ] = $gb;
+				}
+			} else {
+				$leader = $values;
+			}
+		}
+	}
 }

includes/class-sp-team.php

@@ -235,7 +235,11 @@ class SP_Team extends SP_Custom_Post {
 			// Generate array of placeholder values for each league
 			$placeholders[ $div_id ] = array();
 			foreach ( $equations as $key => $value ):
-				$placeholders[ $div_id ][ $key ] = sp_solve( $value['equation'], $totals, $value['precision'] );
+				if ( '$gamesback' == $value['equation'] ) {
+					$placeholders[ $div_id ][ $key ] = __( '(Auto)', 'sportspress' );
+				} else {
+					$placeholders[ $div_id ][ $key ] = sp_solve( $value['equation'], $totals, $value['precision'] );
+				}
 			endforeach;
 
 		endforeach;

includes/sp-core-functions.php

@@ -1029,7 +1029,12 @@ if ( !function_exists( 'sp_solve' ) ) {
 		if ( $equation == null )
 			return '-';
 
-		if ( strpos( $equation, '$streak' ) !== false ):
+		if ( strpos( $equation, '$gamesback' ) !== false ):
+
+			// Return placeholder
+			return '-';
+
+		elseif ( strpos( $equation, '$streak' ) !== false ):
 
 			// Return direct value
 			return sp_array_value( $vars, 'streak', '-' );
@@ -1057,6 +1062,7 @@ if ( !function_exists( 'sp_solve' ) ) {
 		endif;
 
 		// Remove unnecessary variables from vars before calculating
+		unset( $vars['gamesback'] );
 		unset( $vars['streak'] );
 		unset( $vars['last5'] );
 		unset( $vars['last10'] );