<?php

namespace Database\Seeders;

use App\Models\Dun;
use App\Models\Election;
use App\Models\Position;
use App\Models\PositionQuota;
use App\Models\PusatMengundi;
use App\Models\SaluranMengundi;
use App\Models\StaffAssignment;
use App\Models\User;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Database\Seeder;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Str;

class SampleElectionSeeder extends Seeder
{
    /**
     * Seed sample election hierarchy for development and tests.
     */
    public function run(): void
    {
        $this->cleanupSampleData();

        $election = Election::query()->firstOrNew(['code' => 'PRN2026']);

        if (! $election->exists) {
            $election->public_uuid = (string) Str::uuid();
        }

        $election->forceFill([
            'name' => 'Pilihanraya Negeri 2026',
            'status' => 'active',
            'starts_at' => now()->toDateString(),
            'polling_date' => now()->addWeeks(4)->toDateString(),
        ])->save();

        $election->settings()->updateOrCreate(
            ['election_id' => $election->id],
            [
                'registration_start_date' => now()->toDateString(),
                'registration_end_date' => now()->addWeeks(3)->toDateString(),
                'polling_date' => $election->polling_date,
                'is_registration_open' => true,
                'is_registration_open_override' => null,
                'is_attendance_active' => false,
            ],
        );

        $dun = Dun::query()->updateOrCreate(
            ['election_id' => $election->id, 'code' => 'N49'],
            ['name' => 'Kota Iskandar'],
        );

        $pusat = new PusatMengundi;
        $pusat->public_uuid = (string) Str::uuid();
        $pusat->forceFill([
            'election_id' => $election->id,
            'code' => 'PM001',
            'dun_id' => $dun->id,
            'name' => 'SK Seri Contoh',
            'address' => 'Jalan Contoh 1, 43000 Kajang, Selangor',
        ])->save();

        $pusat->forceFill([
            'registration_url' => url('/pohon/'.$pusat->public_uuid),
        ])->save();

        $this->seedSaluran($election, $pusat);
        $this->seedQuotas($election, $pusat);
        $this->seedOperationalUsersAndAssignments($election, $pusat);

        $pusat->wheelchairAllocation()->updateOrCreate(
            ['election_id' => $election->id],
            [
                'allocated_quantity' => 2,
                'notes' => 'Sample allocation for Phase 2.',
            ],
        );
    }

    private function cleanupSampleData(): void
    {
        $election = Election::query()->where('code', 'PRN2026')->first();

        if (! $election) {
            return;
        }

        PositionQuota::query()->where('election_id', $election->id)->forceDelete();
        SaluranMengundi::query()->where('election_id', $election->id)->forceDelete();
        PusatMengundi::query()->where('election_id', $election->id)->forceDelete();
    }

    private function seedSaluran(Election $election, PusatMengundi $pusat): void
    {
        foreach (range(1, 3) as $number) {
            $pusat->saluranMengundis()->updateOrCreate(
                ['number' => (string) $number],
                [
                    'election_id' => $election->id,
                    'name' => null,
                    'voter_count' => 450 + ($number * 25),
                ],
            );
        }
    }

    private function seedQuotas(Election $election, PusatMengundi $pusat): void
    {
        $positions = Position::query()->whereIn('code', [
            'PPM',
            'PAPM',
            'KTM',
            'KPDP',
            'KP',
            'POLIS',
            'CALON_TAMBAHAN',
        ])->get()->keyBy('code');

        PositionQuota::query()->updateOrCreate(
            [
                'election_id' => $election->id,
                'pusat_mengundi_id' => $pusat->id,
                'saluran_mengundi_id' => null,
                'position_id' => $positions['PPM']->id,
            ],
            ['quota' => 1],
        );

        PositionQuota::query()->updateOrCreate(
            [
                'election_id' => $election->id,
                'pusat_mengundi_id' => $pusat->id,
                'saluran_mengundi_id' => null,
                'position_id' => $positions['PAPM']->id,
            ],
            ['quota' => 3],
        );

        /** @var Collection<int, SaluranMengundi> $salurans */
        $salurans = $pusat->saluranMengundis()->get();

        foreach ($salurans as $saluran) {
            foreach ([
                'KTM' => 1,
                'KPDP' => 1,
                'KP' => 4,
                'POLIS' => 1,
                'CALON_TAMBAHAN' => 1,
            ] as $code => $quota) {
                PositionQuota::query()->updateOrCreate(
                    [
                        'election_id' => $election->id,
                        'pusat_mengundi_id' => $pusat->id,
                        'saluran_mengundi_id' => $saluran->id,
                        'position_id' => $positions[$code]->id,
                    ],
                    ['quota' => $quota],
                );
            }
        }
    }

    private function seedOperationalUsersAndAssignments(Election $election, PusatMengundi $pusat): void
    {
        $ppm = $this->seedUser('PPM Contoh', 'ppm@prn.local', ['PPM', 'KTM']);
        $ktm = $this->seedUser('KTM Contoh', 'ktm@prn.local', ['KTM']);
        $this->seedUser('Admin Kewangan Contoh', 'kewangan@prn.local', ['Admin Kewangan']);

        $positions = Position::query()->whereIn('code', ['PPM', 'KTM'])->get()->keyBy('code');
        /** @var SaluranMengundi $saluranPertama */
        $saluranPertama = $pusat->saluranMengundis()->where('number', '1')->firstOrFail();

        /** @var SaluranMengundi $saluranKedua */
        $saluranKedua = $pusat->saluranMengundis()->where('number', '2')->firstOrFail();

        StaffAssignment::query()->updateOrCreate(
            [
                'election_id' => $election->id,
                'user_id' => $ppm->id,
                'position_id' => $positions['PPM']->id,
                'pusat_mengundi_id' => $pusat->id,
                'saluran_mengundi_id' => null,
            ],
            [
                'status' => 'active',
                'assigned_at' => now(),
                'source' => 'sample_seed',
            ],
        );

        StaffAssignment::query()->updateOrCreate(
            [
                'election_id' => $election->id,
                'user_id' => $ppm->id,
                'position_id' => $positions['KTM']->id,
                'pusat_mengundi_id' => $pusat->id,
                'saluran_mengundi_id' => $saluranPertama->id,
            ],
            [
                'status' => 'active',
                'assigned_at' => now(),
                'source' => 'sample_seed_dual_role',
            ],
        );

        StaffAssignment::query()->updateOrCreate(
            [
                'election_id' => $election->id,
                'user_id' => $ktm->id,
                'position_id' => $positions['KTM']->id,
                'pusat_mengundi_id' => $pusat->id,
                'saluran_mengundi_id' => $saluranKedua->id,
            ],
            [
                'status' => 'active',
                'assigned_at' => now(),
                'source' => 'sample_seed',
            ],
        );
    }

    /**
     * @param  array<int, string>  $roles
     */
    private function seedUser(string $name, string $email, array $roles): User
    {
        $user = User::query()->firstOrCreate(
            ['email' => $email],
            [
                'name' => $name,
                'password' => Hash::make('password'),
                'email_verified_at' => now(),
            ],
        );

        if ($user->email_verified_at === null) {
            $user->forceFill(['email_verified_at' => now()])->save();
        }

        $user->syncRoles($roles);

        return $user;
    }
}