can match
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@ -23,12 +23,12 @@ class Participant extends Model
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'desperate' => 'boolean',
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];
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public function giver()
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public function receiver()
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{
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return $this->belongsTo(Participant::class, 'giving_id');
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}
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public function receiver()
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public function giver()
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{
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return $this->hasOne(Participant::class, 'giving_id', 'id');
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}
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@ -0,0 +1,105 @@
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<?php
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namespace App\Services;
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use App\Models\Participant;
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use Illuminate\Support\Collection;
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class MatcherService
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{
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public function match(): void
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{
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$participants = Participant::all();
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if ($participants->count() < 2) {
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return;
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}
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// desperate denotes a user A that is supposed to give to a user B that dropped out
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// whilst user A has a user C giving to them, or vice versa
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$desperate = $participants->where('desperate', true)->values();
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$nonDesperate = $participants->where('desperate', false)->values();
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$desperate = $desperate->shuffle();
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$nonDesperate = $nonDesperate->shuffle();
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$assignments = [];
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/*
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|--------------------------------------------------------------------------
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| 1. Match DESPERATE participants
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|--------------------------------------------------------------------------
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| A desperate user should match:
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| - First to another desperate participant
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| - If none left, match to a non-desperate participant
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|--------------------------------------------------------------------------
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*/
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foreach ($desperate as $p) {
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// Exclude self from possible options
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$pool = $desperate->filter(fn($d) => $d->id !== $p->id);
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if ($pool->isEmpty()) {
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$pool = $nonDesperate;
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}
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if ($pool->isEmpty()) {
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continue;
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}
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$candidate = $this->pickValidTarget($p, $pool, $assignments);
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if ($candidate) {
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$assignments[$p->id] = $candidate->id;
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}
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}
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/*
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|--------------------------------------------------------------------------
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| 2. Match NON-DESPERATE participants
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|--------------------------------------------------------------------------
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| A non-desperate participant always matches to the non-desperate pool.
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|--------------------------------------------------------------------------
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*/
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foreach ($nonDesperate as $p) {
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// Exclude self
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$pool = $nonDesperate->filter(fn($d) => $d->id !== $p->id);
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if ($pool->isEmpty()) {
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continue;
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}
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$candidate = $this->pickValidTarget($p, $pool, $assignments);
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if ($candidate) {
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$assignments[$p->id] = $candidate->id;
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}
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}
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/*
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|--------------------------------------------------------------------------
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| 3. Write all results back to DB
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|--------------------------------------------------------------------------
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*/
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foreach ($assignments as $id => $givingId) {
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Participant::where('id', $id)->update([
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'giving_id' => $givingId,
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]);
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}
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}
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private function pickValidTarget(Participant $giver, Collection $pool, array $assignments): ?Participant
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{
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$shuffled = $pool->shuffle();
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// Avoid duplicates
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foreach ($shuffled as $candidate) {
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if (($assignments[$candidate->id] ?? null) === $giver->id) {
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continue;
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}
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return $candidate;
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}
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return null;
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}
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}
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@ -8,6 +8,8 @@ state(['token'])->url();
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state([
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'participant' => null,
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'userData' => null,
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'receiverPrompt' => null,
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'receiverUserData' => null,
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'prompt' => '',
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'isEditing' => false,
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]);
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@ -23,6 +25,10 @@ mount(function () {
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if ($this->participant) {
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$this->userData = $this->participant->getUserData();
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$this->prompt = $this->participant->prompt ?? '';
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if($this->participant->receiver) {
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$this->receiverPrompt = $this->participant->receiver->prompt;
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$this->receiverUserData = $this->participant->receiver->getUserData();
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}
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}
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}
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});
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@ -82,6 +88,11 @@ $cancel = function () {
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@if($participant->giving_id)
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You are giving to <p>{{ $participant->giving_id }}</p>
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@if($receiverUserData)
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<img src ="{{ $receiverUserData['data']['profile_image_url'] ?? '' }}">
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<h1> {{ $receiverUserData['data']['username'] ?? 'Unknown' }}</h1>
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@endif
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{{ "Their prompt is... {$receiverPrompt}" ?: 'No prompt set yet.' }}
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@elseif($participant->desperate)
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<p>You're in a bind!</p>
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@else
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@ -1,8 +1,9 @@
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<?php
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use App\Models\Participant;
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use App\Services\MatcherService;
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use Illuminate\Database\Eloquent\Collection;
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use function Livewire\Volt\{state, mount, rules};
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use function Livewire\Volt\{state, mount};
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state(['participants' => Collection::class]);
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@ -10,14 +11,47 @@ mount(function () {
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$this->participants = Participant::all();
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});
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$runMatch = function () {
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$matcher = app(MatcherService::class);
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$matcher->match();
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session()->flash('match-message',"Done");
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$this->participants = Participant::all();
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};
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?>
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<div class="p-6 bg-gray-100 min-h-screen">
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<div class="max-w-7xl mx-auto">
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<div class="flex justify-between items-center mb-6">
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<h1 class="text-3xl font-extrabold text-gray-900">All Participants Data</h1>
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<button
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wire:click="runMatch"
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wire:loading.attr="disabled"
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wire:target="runMatch"
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class="px-4 py-2 bg-indigo-600 text-white font-semibold rounded-lg shadow-md hover:bg-indigo-700 transition duration-150 disabled:opacity-50"
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>
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<span wire:loading wire:target="runMatch">Processing Match...</span>
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<span wire:loading.remove wire:target="runMatch">Run Matcher Service</span>
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</button>
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</div>
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<p class="text-gray-600 mb-4">
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Displaying all records from the `participants` table.
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</p>
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@if (session()->has('match-message'))
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<div class="bg-green-100 border-l-4 border-green-500 text-green-700 p-4 mb-4 rounded" role="alert">
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<p class="font-bold">Success!</p>
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<p>{{ session('match-message') }}</p>
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</div>
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@endif
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@if($participants->isEmpty())
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<div class="p-4 text-center text-gray-500 bg-white shadow rounded-lg">
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No record
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No records
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</div>
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@else
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<div class="shadow overflow-hidden border-b border-gray-200 sm:rounded-lg">
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@ -53,10 +87,10 @@ mount(function () {
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</td>
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<td class="px-6 py-4 whitespace-nowrap text-sm">
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<span class="px-2 inline-flex text-xs leading-5 font-semibold rounded-full
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{{ $participant->desperate ? 'bg-red-100 text-red-800' : 'bg-green-100 text-green-800' }}">
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{{ $participant->desperate ? 'YES' : 'No' }}
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</span>
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<span class="px-2 inline-flex text-xs leading-5 font-semibold rounded-full
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{{ $participant->desperate ? 'bg-red-100 text-red-800' : 'bg-green-100 text-green-800' }}">
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{{ $participant->desperate ? 'YES' : 'No' }}
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</span>
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</td>
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<td class="px-6 py-4 text-sm font-mono text-gray-500 truncate" title="{{ $participant->token }}">
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@ -69,6 +103,3 @@ mount(function () {
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</div>
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@endif
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</div>
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</div>
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