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<?php |
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/** |
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* Party Cohort Class |
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* |
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* @package TheyWorkForYou |
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*/ |
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namespace MySociety\TheyWorkForYou; |
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/** |
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* Policy DistributionCollection |
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* This brings together a set of a person's policy distributions for a given period and party. |
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* It covers items in the same 'group' (health, social, etc) |
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*/ |
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class PolicyDistributionCollection { |
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public string $group_slug; |
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public string $group_name; |
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public string $comparison_period_slug; |
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public int $person_id; |
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public string $party_slug; |
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/** @var PolicyDistributionPair[] */ |
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public array $policy_pairs; |
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public function getPairfromPolicyID(int $policy_id): ?PolicyDistributionPair { |
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foreach ($this->policy_pairs as $pair) { |
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if ($pair->policy_id == $policy_id) { |
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return $pair; |
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} |
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} |
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return null; |
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} |
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public function __construct( |
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string $group_slug, |
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string $group_name, |
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string $comparison_period_slug, |
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int $person_id, |
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string $party_slug, |
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array $policy_pairs |
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) { |
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$this->group_slug = $group_slug; |
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$this->group_name = $group_name; |
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$this->comparison_period_slug = $comparison_period_slug; |
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$this->person_id = $person_id; |
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$this->party_slug = $party_slug; |
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$this->policy_pairs = $policy_pairs; |
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} |
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public function latestUpdate(array $latest_dates) { |
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$latest_date = null; |
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foreach ($this->policy_pairs as $pair) { |
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$date = $latest_dates[$pair->policy_id] ?? null; |
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if ($date && (!$latest_date || $date > $latest_date)) { |
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$latest_date = $date; |
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} |
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} |
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return $latest_date; |
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} |
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/** |
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* Retrieves an array of PolicyDistributionCollection objects for a specific person. |
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* |
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* @param array $allowed_sets An array of allowed policy sets. |
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* @param int $person_id The ID of the person. |
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* @param string $party_slug The slug of the person's political party. |
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* @param string $period_slug The slug representing the time period. |
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* @param int $house The house type (default is HOUSE_TYPE_COMMONS). |
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* |
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* @return PolicyDistributionCollection[] An array of PolicyDistributionCollection objects. |
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*/ |
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public static function getPersonDistributions(array $allowed_sets, int $person_id, string $party_slug, string $period_slug, int $house = HOUSE_TYPE_COMMONS): array { |
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$pairs = PolicyDistributionPair::getPersonDistributions($person_id, $party_slug, $period_slug, $house); |
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$policies = new Policies(); |
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$collections = []; |
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foreach ($policies->getSets() as $set_slug => $policy_ids) { |
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if (!in_array($set_slug, $allowed_sets)) { |
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continue; |
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} |
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$group_name = $policies->getSetDescriptions()[$set_slug]; |
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$group_slug = $set_slug; |
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$comparison_period_slug = $period_slug; |
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$policy_pairs = array_filter($pairs, function ($pair) use ($policy_ids) { |
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return in_array($pair->getPolicyID(), $policy_ids) && !$pair->member_distribution->noDataAvailable(); |
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}); |
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$collection = new PolicyDistributionCollection($group_slug, $group_name, $comparison_period_slug, $person_id, $party_slug, $policy_pairs); |
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$collections[] = $collection; |
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} |
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return $collections; |
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} |
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/** |
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* Retrieves the significant policy distributions from an array of PolicyDistributionCollection objects. |
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* |
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* @param PolicyDistributionCollection[] $distributions An array of PolicyDistributionCollection objects. |
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* @return ?PolicyDistributionCollection An array of significant PolicyDistributionCollection objects. |
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*/ |
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public static function getSignificantDistributions(array $distributions): ?PolicyDistributionCollection { |
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if (empty($distributions)) { |
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return null; |
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} |
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$significant_pairs = []; |
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foreach ($distributions as $distribution) { |
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foreach ($distribution->policy_pairs as $pair) { |
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if ($pair->sigScoreDifference()) { |
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$significant_pairs[] = $pair; |
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} |
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} |
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} |
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// possibly we've picked up a duplicate distribution if it was in multiple sets |
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// so dedupe based on the policy_id |
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$significant_pairs = array_values(array_unique($significant_pairs, SORT_REGULAR)); |
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return new PolicyDistributionCollection( |
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$distributions[0]->group_slug, |
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$distributions[0]->group_name, |
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$distributions[0]->comparison_period_slug, |
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$distributions[0]->person_id, |
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$distributions[0]->party_slug, |
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$significant_pairs |
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); |
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} |
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} |
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mysociety /
theyworkforyou
