<?php

namespace App\Filament\Pages;

use App\Filament\Resources\FindingResource;
use App\Jobs\GenerateDriftFindingsJob;
use App\Models\Finding;
use App\Models\InventorySyncRun;
use App\Models\Tenant;
use App\Models\User;
use App\Services\Drift\DriftRunSelector;
use BackedEnum;
use Filament\Pages\Page;
use UnitEnum;

class DriftLanding extends Page
{
    protected static string|BackedEnum|null $navigationIcon = 'heroicon-o-arrows-right-left';

    protected static string|UnitEnum|null $navigationGroup = 'Drift';

    protected static ?string $navigationLabel = 'Drift';

    protected string $view = 'filament.pages.drift-landing';

    public function mount(): void
    {
        $tenant = Tenant::current();

        $user = auth()->user();
        if (! $user instanceof User) {
            abort(403, 'Not allowed');
        }

        $latestSuccessful = InventorySyncRun::query()
            ->where('tenant_id', $tenant->getKey())
            ->where('status', InventorySyncRun::STATUS_SUCCESS)
            ->whereNotNull('finished_at')
            ->orderByDesc('finished_at')
            ->first();

        if (! $latestSuccessful instanceof InventorySyncRun) {
            return;
        }

        $scopeKey = (string) $latestSuccessful->selection_hash;

        $selector = app(DriftRunSelector::class);
        $comparison = $selector->selectBaselineAndCurrent($tenant, $scopeKey);

        if ($comparison === null) {
            return;
        }

        $baseline = $comparison['baseline'];
        $current = $comparison['current'];

        $exists = Finding::query()
            ->where('tenant_id', $tenant->getKey())
            ->where('finding_type', Finding::FINDING_TYPE_DRIFT)
            ->where('scope_key', $scopeKey)
            ->where('baseline_run_id', $baseline->getKey())
            ->where('current_run_id', $current->getKey())
            ->exists();

        if ($exists) {
            return;
        }

        GenerateDriftFindingsJob::dispatch(
            tenantId: (int) $tenant->getKey(),
            userId: (int) $user->getKey(),
            baselineRunId: (int) $baseline->getKey(),
            currentRunId: (int) $current->getKey(),
            scopeKey: $scopeKey,
        );
    }

    public function getFindingsUrl(): string
    {
        return FindingResource::getUrl('index', tenant: Tenant::current());
    }
}