<?php

namespace App\Services\Admin;

use App\Models\Position;
use App\Models\PusatMengundi;
use App\Models\StaffAssignment;
use App\Models\User;
use Illuminate\Support\Facades\DB;

class PpmAssignmentService
{
    public function assign(PusatMengundi $pusatMengundi, User $user): StaffAssignment
    {
        return DB::transaction(function () use ($pusatMengundi, $user): StaffAssignment {
            $position = Position::query()->where('code', 'PPM')->firstOrFail();

            StaffAssignment::query()
                ->where('election_id', $pusatMengundi->election_id)
                ->where('pusat_mengundi_id', $pusatMengundi->id)
                ->where('position_id', $position->id)
                ->whereNull('saluran_mengundi_id')
                ->where('status', 'active')
                ->where('user_id', '!=', $user->id)
                ->update(['status' => 'replaced']);

            $assignment = StaffAssignment::query()->updateOrCreate(
                [
                    'election_id' => $pusatMengundi->election_id,
                    'pusat_mengundi_id' => $pusatMengundi->id,
                    'position_id' => $position->id,
                    'saluran_mengundi_id' => null,
                    'user_id' => $user->id,
                ],
                [
                    'status' => 'active',
                    'assigned_by_user_id' => auth()->id(),
                    'assigned_at' => now(),
                    'source' => 'admin_setup',
                ],
            );

            $assignment->histories()->create([
                'to_position_id' => $position->id,
                'to_pusat_mengundi_id' => $pusatMengundi->id,
                'changed_by_user_id' => auth()->id(),
                'note' => 'PPM assigned from Admin setup module.',
            ]);

            $user->assignRole('PPM');

            activity('admin_setup')
                ->performedOn($assignment)
                ->causedBy(auth()->user())
                ->withProperties([
                    'pusat_mengundi_id' => $pusatMengundi->id,
                    'user_id' => $user->id,
                    'position_code' => 'PPM',
                ])
                ->log('ppm_assigned');

            return $assignment;
        });
    }
}