From 939d7ea7f6267ce3e5f4d6ba7988af7c1f3fb86c Mon Sep 17 00:00:00 2001
From: emkael <emkael@tlen.pl>
Date: Fri, 15 Feb 2019 20:56:48 +0300
Subject: KMP support in API

---
 http/api.php | 40 +++++++++++++++++++++++++++++++++-------
 1 file changed, 33 insertions(+), 7 deletions(-)

(limited to 'http')

diff --git a/http/api.php b/http/api.php
index 29c56ec..3ab7f3d 100644
--- a/http/api.php
+++ b/http/api.php
@@ -90,7 +90,7 @@ function check_parameters($parameters) {
     if (!isset($parameters['manual']) || !isset($parameters['manual']['min_points']) || !isset($parameters['manual']['tournament_weight'])) {
         ensure_parameters($parameters, array('tournament_rank', 'over39_boards'));
         check_values($parameters, array(
-            'tournament_rank' => function($r) { return ctype_digit($r) && intval($r) >= 0 && intval($r) <= 7; },
+            'tournament_rank' => function($r) { return ctype_digit($r) && ((intval($r) >= 0 && intval($r) <= 7) || intval($r) == RANK_KMP); },
             'over39_boards' => function($r) { return ctype_digit($r) && intval($r) >= 0 && intval($r) <= 1; }
         ));
     } else {
@@ -106,23 +106,28 @@ function check_parameters($parameters) {
     }
 }
 
+const RANK_KMP = 101;
+
 function parse_parameters($parameters) {
     $return = array();
     $return['type'] = intval($parameters['type']);
     if ($return['type'] == 3 || $return['type'] > 4) {
         throw new ParametersException('Parameter: type has incorrect value (' . $return['type'] . ')');
     }
+    if ($return['type'] != 2 && $parameters['tournament_rank'] == RANK_KMP) {
+        throw new ParametersException('Parameter: type has incorrect value (' . $return['type'] . ') for KMP tournament');
+    }
     $return['contestants'] = intval($parameters['contestants']);
     $return['players'] = isset($parameters['players']) ? intval($parameters['players']) : intval($parameters['contestants']) * $return['type'];
     $return['title_sum'] = floatval($parameters['title_sum']);
     $weights = array(
-        array(1, 2, 4, 5, 7, 10, 15, 25),
-        array(2, 3, 5, 7, 10, 15, 25, 40)
+        array(1, 2, 4, 5, 7, 10, 15, 25, RANK_KMP => 0),
+        array(2, 3, 5, 7, 10, 15, 25, 40, RANK_KMP => 0)
     );
     $return['tournament_weight'] = (isset($parameters['manual']) && isset($parameters['manual']['tournament_weight'])) ? intval($parameters['manual']['tournament_weight']) : $weights[intval($parameters['over39_boards'])][intval($parameters['tournament_rank'])];
     $min_points = array(
-        array(0, 0, 0, 0, 50, 75, 150, 200),
-        array(0, 0, 0, 0, 70, 100, 200, 300)
+        array(0, 0, 0, 0, 50, 75, 150, 200, RANK_KMP => 0),
+        array(0, 0, 0, 0, 70, 100, 200, 300, RANK_KMP => 0)
     );
     $return['min_points'] = (isset($parameters['manual']) && isset($parameters['manual']['min_points'])) ? intval($parameters['manual']['min_points']) : $min_points[intval($parameters['over39_boards'])][intval($parameters['tournament_rank'])];
     $return['players_coefficient'] = (isset($parameters['manual']) && isset($parameters['manual']['players_coefficient'])) ? floatval($parameters['manual']['players_coefficient']) : 0.05;
@@ -196,11 +201,32 @@ function calculate_points($parameters) {
     return $result;
 }
 
+function calculate_kmp_points($parameters) {
+    $max_points = safe_ceil($parameters['contestants'] * 0.5);
+    $min_points = 1;
+    $result = array("sum" => 0, "points" => array(1 => $max_points));
+    for ($place = 2; $place <= $parameters['contestants']; $place++) {
+        $result['points'][$place] = max($min_points, $result['points'][$place-1]-1);
+        $result['sum'] += $parameters['type'] * $result['points'][$place];
+    }
+    if ($parameters['title_sum'] / $parameters['players'] >= 2.5) {
+        $result['points'][1] += 5;
+        $result['points'][2] += 3;
+        $result['points'][3] += 1;
+        $result['sum'] += $parameters['type'] * 8;
+    }
+    return $result;
+}
+
 function run($parameters) {
     try {
         check_parameters($parameters);
-        $parameters = parse_parameters($parameters);
-        $result = calculate_points($parameters);
+        $params = parse_parameters($parameters);
+        if ($parameters['tournament_rank'] == RANK_KMP) {
+            $result = calculate_kmp_points($params);
+        } else {
+            $result = calculate_points($params);
+        }
         return $result;
     }
     catch (ParametersException $e) {
-- 
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