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<?php

declare(strict_types=1);

namespace App\Domain\Analytics;

use App\Infrastructure\Database\BaseRepository;
use App\Infrastructure\Ids\UuidGenerator;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\DB;

final class AnalyticsFunnelRepository extends BaseRepository
{
    public function __construct(private readonly UuidGenerator $ids) {}

    protected function table(): string
    {
        return 'analytics_funnel_progress';
    }

    protected function hasDeletedAtColumn(): bool
    {
        return false;
    }

    public function findByVisitorSessionModule(string $visitorId, string $sessionId, string $module): ?\stdClass
    {
        return DB::table($this->table())
            ->where('visitor_id', $visitorId)
            ->where('session_id', $sessionId)
            ->where('module', $module)
            ->first();
    }

    /**
     * Idempotent: returns existing id if a row already exists for this triple.
     */
    public function start(string $visitorId, string $sessionId, string $module): string
    {
        $existing = $this->findByVisitorSessionModule($visitorId, $sessionId, $module);
        if ($existing) {
            return $existing->id;
        }

        $id  = $this->ids->generate();
        $now = Carbon::now()->toDateTimeString();
        DB::table($this->table())->insert([
            'id'           => $id,
            'visitor_id'   => $visitorId,
            'session_id'   => $sessionId,
            'module'       => $module,
            'started_at'   => $now,
            'last_step_at' => $now,
            'highest_step' => 0,
            'submitted'    => 0,
            'abandoned'    => 0,
            'created_at'   => $now,
            'updated_at'   => $now,
        ]);
        return $id;
    }

    /**
     * Advance highest_step monotonically. No-op if step is not higher than current value.
     */
    public function advanceStep(string $id, int $step): void
    {
        $now = Carbon::now()->toDateTimeString();
        DB::table($this->table())
            ->where('id', $id)
            ->where('highest_step', '<', $step)
            ->update([
                'highest_step' => $step,
                'last_step_at' => $now,
                'updated_at'   => $now,
            ]);
    }

    public function markSubmitted(string $id, string $applicationId, bool $feeWaived): void
    {
        $now = Carbon::now()->toDateTimeString();
        DB::table($this->table())->where('id', $id)->update([
            'submitted'      => 1,
            'submitted_at'   => $now,
            'application_id' => $applicationId,
            'fee_waived'     => $feeWaived ? 1 : 0,
            'abandoned'      => 0,
            'abandoned_at'   => null,
            'updated_at'     => $now,
        ]);
    }

    public function markAbandoned(string $id): void
    {
        $now = Carbon::now()->toDateTimeString();
        DB::table($this->table())
            ->where('id', $id)
            ->where('submitted', 0)
            ->update([
                'abandoned'    => 1,
                'abandoned_at' => $now,
                'updated_at'   => $now,
            ]);
    }
}