CFL_CROSSOVER_LOGIC.php

<?php

// Rules:
//      1) Get the top three teams by points from each division.
//      2) For each division, check to see if the 3rd place team in it has less points than the
//         4th place team of the other division (must have at least one point less, a tie means no crossover occurs).
//      2a) If it does, insert that 4th place team above the other division's 3rd place.
//      2b) Else leave the standings for that division as-is.
public static function get_crossover( $args ) {
    // If the season request is < 2016, return an empty object.
    if ( (int) $args['season'] < 1996 ) {
        $response = new Response( array(), array('Crossover data is not available prior to the 1996 season.') );
 
        return $response;
    }
 
    $arr_result = Standings::do_query($args);
 
    // If we get results back, create and return an array of Standing objects with the provided data.
    // If no results are returned, get a list of existing teams and output them all zeroed out.
    if ( sizeof($arr_result) > 0 ) {
        $arr_standings = Standings::create_array($arr_result);
    }
    else {
        $arr_standings = Standings::create_zeroed_out_array($args);
    }
 
    // Get a list of divisions in the results.
    $arr_divisions = array();
    foreach ( $arr_standings->divisions as $division ) {
        $division_id = $division->division_id;
        if ( !isset($arr_divisions[$division_id]) ) {
            $obj_division = new stdClass();
            $obj_division->id = $division_id;
            $obj_division->slug = Standings::get_division_slug($division->division_name);
            $obj_division->other_division_slug = Standings::get_opposing_division_slug($division->division_name);
            $obj_division->contains_crossover_team = false;
 
            $arr_divisions[] = $obj_division;
        }
    }
 
    // Create new "crossover" and "out_of_playoffs" divisions.
    $arr_standings->divisions['crossover'] = new stdClass();
    $arr_standings->divisions['crossover']->division_id = 0;
    $arr_standings->divisions['crossover']->division_name = 'Crossover';
    $arr_standings->divisions['crossover']->division_slug = 'crossover';
    $arr_standings->divisions['crossover']->standings = array();
 
    $arr_standings->divisions['out_of_playoffs'] = new stdClass();
    $arr_standings->divisions['out_of_playoffs']->division_id = 0;
    $arr_standings->divisions['out_of_playoffs']->division_name = 'Out';
    $arr_standings->divisions['out_of_playoffs']->division_slug = 'out_of_playoffs';
    $arr_standings->divisions['out_of_playoffs']->standings = array();
 
    // For each division, check to see if the 3rd place team in it has less points than the 4th place team
    // of the other division.
    foreach ( $arr_divisions as $division ) {
        $team_division_third_place = $arr_standings->divisions[$division->slug]->standings[2];
        $team_other_division_fourth_place = $arr_standings->divisions[$division->other_division_slug]->standings[3];
 
        // If the condition matches, place the fourth place team in the other division at the top of our "crossover" division.
        if ( $team_division_third_place->points < $team_other_division_fourth_place->points ) {
            $arr_teams_to_crossover = array_splice($arr_standings->divisions[$division->other_division_slug]->standings, 3, 1);
            $arr_standings->divisions['crossover']->standings[] = $arr_teams_to_crossover[0];
 
            // Flag that this division and season has a crossover team in it.
            $division->contains_crossover_team = true;
        }
    }
 
    // If the division we're iterating on contains a crossover team, cut it off at 2 teams.
    // Else cut the division off at 3 teams.
    foreach ( $arr_divisions as $division ) {
        if ( $division->contains_crossover_team === true ) {
            $arr_standings->divisions['out_of_playoffs']->standings = array_merge($arr_standings->divisions['out_of_playoffs']->standings, array_splice($arr_standings->divisions[$division->slug]->standings, 2));
        }
        else {
            $arr_standings->divisions['out_of_playoffs']->standings = array_merge($arr_standings->divisions['out_of_playoffs']->standings, array_splice($arr_standings->divisions[$division->slug]->standings, 3));
        }
    }
 
    // Sort the "out of playoffs" section on points and then wins.
    $sort = array();
    foreach( $arr_standings->divisions['out_of_playoffs']->standings as $k => $v ) {
        $sort['points'][$k] = $v->points;
        $sort['wins'][$k] = $v->wins;
    }
    array_multisort($sort['points'], SORT_DESC, $sort['wins'], SORT_ASC, $arr_standings->divisions['out_of_playoffs']->standings);
 
    $response = new Response($arr_standings, array(), null, $args);
 
    return $response;
}

?>