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feat: Basics for more advanced pairing

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overflowerror 2024-07-30 23:14:08 +02:00
parent 7b025f9ca3
commit 7186ed25e9
3 changed files with 107 additions and 12 deletions
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9
html/index.php
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@ -1,15 +1,14 @@
<?php
require_once __DIR__ . "/../core.php";
require_once __DIR__ . "/../lib/rating.php";
require_once __DIR__ . "/../lib/pairing.php";
session_start();
$left = getRandomMob();
$right = getRandomMob();
$pairing = makeInitialPairing(session_id());
$left["rating"] = getEloForMob($left["id"]);
$right["rating"] = getEloForMob($right["id"]);
$left = $pairing[0];
$right = $pairing[1];
$title = "Test";
$content = function() use ($left, $right) {

103
lib/pairing.php Normal file
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@ -0,0 +1,103 @@
<?php
function getRandomMob(): array {
global $pdo;
$result = $pdo->query("SELECT * FROM mm_mobs WHERE enabled = true");
$result = $result->fetchAll(PDO::FETCH_ASSOC);
return $result[array_rand($result)];
}
function findPair(string $session, int $current): array|false {
global $pdo;
error_log($current);
// language=sql
$query = $pdo->prepare(<<<EOF
WITH possible_pairings AS (
SELECT
pairings.mob,
mob_rating.rating AS mob_rating,
pairings.opponent,
opponent_rating.rating AS opponent_rating
FROM (
(
SELECT
mob.id AS mob,
opponent.id AS opponent
FROM mm_mobs mob
CROSS JOIN mm_mobs opponent
WHERE
mob.id != opponent.id
AND mob.enabled
AND opponent.enabled
)
EXCEPT
SELECT
mob,
opponent
FROM mm_matches_of_mob
WHERE session = ?
) AS pairings
INNER JOIN mm_current_rating mob_rating
ON mob_rating.mob = pairings.mob
INNER JOIN mm_current_rating opponent_rating
ON opponent_rating.mob = pairings.opponent
)
SELECT
mob.id AS mob,
mob.name AS mob_name,
mob.image AS mob_image,
pairings_with_difference.mob_rating AS mob_rating,
opponent.id AS opponent,
opponent.name AS opponent_name,
opponent.image AS opponent_image,
pairings_with_difference.opponent_rating AS opponent_rating,
pairings_with_difference.difference AS rating_difference
FROM
(
SELECT
*,
abs(mob_rating - opponent_rating) AS difference
FROM possible_pairings
) AS pairings_with_difference
INNER JOIN mm_mobs AS mob
ON pairings_with_difference.mob = mob.id
INNER JOIN mm_mobs AS opponent
ON pairings_with_difference.opponent = opponent.id
ORDER BY
(pairings_with_difference.mob = ?) DESC,
pairings_with_difference.difference ASC
LIMIT 1;
EOF);
$query->execute([$session, $current]);
$result = $query->fetch(PDO::FETCH_ASSOC);
if ($result === false) {
return false;
} else {
return [
[
"id" => $result["mob"],
"name" => $result["mob_name"],
"image" => $result["mob_image"],
"rating" => $result["mob_rating"],
],
[
"id" => $result["opponent"],
"name" => $result["opponent_name"],
"image" => $result["opponent_image"],
"rating" => $result["opponent_rating"],
]
];
}
}
function makeInitialPairing(string $session): array {
$current = getRandomMob()["id"];
return findPair($session, $current);
}
function makeFollowUpPairing(string $session, int $winner): array {
return findPair($session, $winner);
}

7
lib/rating.php
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@ -2,13 +2,6 @@
require_once __DIR__ . "/database.php";
function getRandomMob(): array {
global $pdo;
$result = $pdo->query("SELECT * FROM mm_mobs WHERE enabled = true");
$result = $result->fetchAll(PDO::FETCH_ASSOC);
return $result[array_rand($result)];
}
function getEloForMob(int $mob): int {
global $pdo;
$query = $pdo->prepare("SELECT * FROM mm_current_rating WHERE mob = ?");