<?php

namespace App\Http\Controllers\Tabulation\Seating;

use App\Actions\Tabulation\RankAuditionEntries;
use App\Exceptions\AuditionAdminException;
use App\Http\Controllers\Controller;
use App\Models\Audition;
use App\Models\Ensemble;
use Illuminate\Http\Request;
use Illuminate\Support\Arr;

use function redirect;

class MakeSeatingDecisionsController extends Controller
{
    public function draftSeats(
        Audition $audition,
        Request $request
    ) {
        $ranker = app(RankAuditionEntries::class);
        $validated = $request->validate([
            'ensemble' => ['required', 'array'],
            'ensemble.*' => ['required', 'integer', 'min:0'],
        ]);
        $proposedSeatingArray = [];
        try {
            $rankedEntries = $ranker($audition, 'seating');
        } catch (AuditionAdminException $e) {
            return redirect()->route('seating.audition', ['audition' => $audition->id])
                ->with('error', $e->getMessage());
        }
        $rankedEntries = $rankedEntries->reject(function ($entry) {
            return $entry->hasFlag('declined');
        });

        $rankedEntries->load(['student.school']);
        $rankedEnsembles = Ensemble::orderBy('rank')->where('event_id', $audition->event_id)->get();
        $ensembleRankOn = 1;
        foreach ($rankedEnsembles as $ensemble) {
            if (! Arr::has($validated['ensemble'], $ensemble->id)) {
                continue;
            }
            $proposedSeatingArray[$ensembleRankOn]['ensemble_id'] = $ensemble->id;
            $proposedSeatingArray[$ensembleRankOn]['ensemble_name'] = $ensemble->name;
            $proposedSeatingArray[$ensembleRankOn]['accept_count'] = $validated['ensemble'][$ensemble->id];
            for ($n = 1; $n <= $validated['ensemble'][$ensemble->id]; $n++) {
                // Escape the loop if we're out of entries
                if ($rankedEntries->isEmpty()) {
                    break;
                }

                $thisEntry = $rankedEntries->shift();
                $proposedSeatingArray[$ensembleRankOn]['seats'][$n]['seat'] = $n;
                $proposedSeatingArray[$ensembleRankOn]['seats'][$n]['entry_id'] = $thisEntry->id;
                $proposedSeatingArray[$ensembleRankOn]['seats'][$n]['entry_name'] = $thisEntry->student->full_name();
                $proposedSeatingArray[$ensembleRankOn]['seats'][$n]['entry_school'] = $thisEntry->student->school->name;
            }

            $ensembleRankOn++;
        }
        $sessionKeyName = 'proposedSeatingArray-'.$audition->id;
        $request->session()->put($sessionKeyName, $proposedSeatingArray);

        return redirect()->route('seating.audition', ['audition' => $audition->id]);
    }

    public function clearDraft(
        Audition $audition
    ) {
        session()->forget('proposedSeatingArray-'.$audition->id);

        return redirect()->route('seating.audition', ['audition' => $audition->id]);
    }
}