<?php

namespace App\Reports;

use App\Models\Activity;
use App\Reports\Contracts\Report;
use Illuminate\Database\Eloquent\Builder;

class SegmentActivityCountsReport extends BaseEloquentReport implements Report
{
    public function slug(): string
    {
        return 'segment-activity-counts';
    }

    public function name(): string
    {
        return 'Aktivnosti po segmentih';
    }

    public function description(): ?string
    {
        return 'Število aktivnosti po segmentih v izbranem obdobju (glede na segment dejanja).';
    }

    public function inputs(): array
    {
        return [
            ['key' => 'from', 'type' => 'date', 'label' => 'Od', 'nullable' => true],
            ['key' => 'to', 'type' => 'date', 'label' => 'Do', 'nullable' => true],
        ];
    }

    public function columns(): array
    {
        return [
            ['key' => 'segment_name', 'label' => 'Segment'],
            ['key' => 'activities_count', 'label' => 'Št. aktivnosti'],
        ];
    }

    public function query(array $filters): Builder
    {
        $q = Activity::query()
            ->join('actions', 'activities.action_id', '=', 'actions.id')
            ->leftJoin('segments', 'actions.segment_id', '=', 'segments.id')
            ->when(! empty($filters['from']), fn ($qq) => $qq->whereDate('activities.created_at', '>=', $filters['from']))
            ->when(! empty($filters['to']), fn ($qq) => $qq->whereDate('activities.created_at', '<=', $filters['to']))
            ->groupBy('segments.name')
            ->selectRaw("COALESCE(segments.name, 'Brez segmenta') as segment_name, COUNT(*) as activities_count");

        return $q;
    }
}