<?php

namespace App\Http\Controllers\Tabulation;

use App\Actions\Entries\DoublerDecision;
use App\Actions\Tabulation\RankAuditionEntries;
use App\Exceptions\AuditionAdminException;
use App\Http\Controllers\Controller;
use App\Models\Audition;
use App\Models\Doubler;
use App\Models\Ensemble;
use App\Models\Entry;
use App\Models\Seat;
use Debugbar;
use Illuminate\Http\Request;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\Cache;

use function redirect;

class SeatAuditionFormController extends Controller
{
    public function showForm(Audition $audition)
    {
        $seatingProposal = (session('proposedSeatingArray-'.$audition->id));
        if ($audition->hasFlag('seats_published')) {
            $publishedSeats = Seat::where('audition_id', $audition->id)
                ->join('ensembles', 'seats.ensemble_id', '=', 'ensembles.id')
                ->orderBy('ensembles.rank')
                ->orderBy('seats.seat')
                ->select('seats.*')
                ->with(['ensemble', 'student.school'])
                ->get();
        } else {
            $publishedSeats = false;
        }

        $ranker = app(RankAuditionEntries::class);
        // Get scored entries in order
        try {
            $scored_entries = $ranker($audition, 'seating');
        } catch (AuditionAdminException $e) {
            return redirect()->route('seating.audition', ['audition' => $audition->id])
                ->with('error', $e->getMessage());
        }

        $scored_entries->load(['student.doublers', 'student.school']);
        // Get unscored entries sorted by draw number
        $unscored_entries = $audition->entries()
            ->whereDoesntHave('totalScore')
            ->whereDoesntHave('flags', function ($query) {
                $query->where('flag_name', 'no_show');
            })
            ->whereDoesntHave('flags', function ($query) {
                $query->where('flag_name', 'failed_prelim');
            })
            ->with('student.school')
            ->withCount('scoreSheets')
            ->orderBy('draw_number')
            ->get();

        // Get no show entries sorted by draw number
        $noshow_entries = $audition->entries()
            ->whereDoesntHave('totalScore')
            ->whereHas('flags', function ($query) {
                $query->where('flag_name', 'no_show');
            })
            ->with('student.school')
            ->orderBy('draw_number')
            ->get();

        // Get failed prelim entries sorted by draw number
        $failed_prelim_entries = $audition->entries()
            ->whereDoesntHave('totalScore')
            ->whereHas('flags', function ($query) {
                $query->where('flag_name', 'failed_prelim');
            })
            ->with('student.school')
            ->orderBy('draw_number')
            ->get();

        // Get Doublers
        $doublerData = Doubler::where('event_id', $audition->event_id)
            ->whereIn('student_id', $scored_entries->pluck('student_id'))
            ->get()
            ->keyBy('student_id');

        $auditionHasUnresolvedDoublers = false;
        foreach ($doublerData as $doubler) {
            if (! is_null($doubler->accepted_entry)) {
                continue;
            }
            foreach ($doubler->entries() as $entry) {
                if ($entry->audition_id === $audition->id && $entry->hasFlag('declined')) {
                    continue 2;
                }
            }
            $auditionHasUnresolvedDoublers = true;
        }

        $canSeat = ! $auditionHasUnresolvedDoublers && $unscored_entries->count() === 0;

        return view('tabulation.auditionSeating',
            compact('audition',
                'scored_entries',
                'unscored_entries',
                'noshow_entries',
                'failed_prelim_entries',
                'doublerData',
                'auditionHasUnresolvedDoublers',
                'canSeat',
                'seatingProposal',
                'publishedSeats',
            )
        );
    }

    public function declineSeat(Audition $audition, Entry $entry)
    {
        $decider = app(DoublerDecision::class);
        try {
            $decider->decline($entry);
        } catch (AuditionAdminException $e) {
            return redirect()->route('seating.audition', ['audition' => $audition->id])
                ->with('error', $e->getMessage());
        }

        return redirect()->route('seating.audition', ['audition' => $audition->id])->with('success',
            $entry->student->full_name().' has declined '.$audition->name);
    }

    public function massDecline(Audition $audition)
    {
        $decider = app(DoublerDecision::class);
        $validData = request()->validate([
            'decline-below' => ['required', 'integer', 'min:0'],
        ]);
        $ranker = app(RankAuditionEntries::class);
        // Get scored entries in order
        try {
            $scored_entries = $ranker($audition, 'seating');
        } catch (AuditionAdminException $e) {
            return redirect()->route('seating.audition', ['audition' => $audition->id])
                ->with('error', $e->getMessage());
        }
        $scored_entries->load(['student.doublers', 'student.school']);
        foreach ($scored_entries as $entry) {
            Debugbar::info('Starting entry '.$entry->student->full_name());
            if ($entry->seatingRank < $validData['decline-below']) {
                Debugbar::info('Skipping '.$entry->student->full_name().' because they are ranked above decline threshold');

                continue;
            }
            if ($entry->hasFlag('declined')) {
                Debugbar::info('Skipping '.$entry->student->full_name().' because they have already been declined');

                continue;
            }
            if (! $entry->student->isDoublerInEvent($audition->event_id)) {
                Debugbar::info('Skipping '.$entry->student->full_name().' because they are not a doubler');

                continue;
            }
            if ($entry->student->doublers->where('event_id', $audition->event_id)->first()->accepted_entry) {
                Debugbar::info('Skipping '.$entry->student->full_name().' because they have already accepted a seat');

                continue;
            }
            try {
                $decider->decline($entry);
            } catch (AuditionAdminException $e) {
                return redirect()->route('seating.audition', ['audition' => $audition->id])
                    ->with('error', $e->getMessage());
            }
        }
        Cache::forget('rank_seating_'.$audition->id);

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

    }

    public function acceptSeat(Audition $audition, Entry $entry)
    {
        $decider = app(DoublerDecision::class);
        try {
            $decider->accept($entry);
        } catch (AuditionAdminException $e) {
            return redirect()->route('seating.audition', ['audition' => $audition->id])
                ->with('error', $e->getMessage());
        }

        return redirect()->route('seating.audition', ['audition' => $audition->id])->with('success',
            $entry->student->full_name().' has accepted '.$audition->name);
    }

    public function noshow(
        Audition $audition,
        Entry $entry
    ) {
        $recorder = app('App\Actions\Tabulation\EnterNoShow');
        try {
            $msg = $recorder($entry);
        } catch (AuditionAdminException $e) {
            return redirect()->back()->with('error', $e->getMessage());
        }

        return redirect()->route('seating.audition', [$audition])->with('success', $msg);
    }

    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]);
    }

    public function publishSeats(
        Audition $audition
    ) {
        $publisher = app('App\Actions\Tabulation\PublishSeats');
        $seatingProposal = (session('proposedSeatingArray-'.$audition->id));
        $proposal = [];
        foreach ($seatingProposal as $ensemble) {
            $ensembleId = $ensemble['ensemble_id'];
            if (isset($ensemble['seats'])) {
                foreach ($ensemble['seats'] as $seat) {
                    $proposal[] = [
                        'ensemble_id' => $ensembleId,
                        'audition_id' => $audition->id,
                        'seat' => $seat['seat'],
                        'entry_id' => $seat['entry_id'],
                    ];
                }
            }
        }
        try {
            $publisher($audition, $proposal);
        } catch (AuditionAdminException $e) {
            return redirect()->route('seating.audition', [$audition])->with('error', $e->getMessage());
        }
        session()->forget('proposedSeatingArray-'.$audition->id);

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

    public function unpublishSeats(
        Audition $audition
    ) {
        $unpublisher = app('App\Actions\Tabulation\UnpublishSeats');
        $unpublisher($audition);
        session()->forget('proposedSeatingArray-'.$audition->id);

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