<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use App\Models\SpatialPlanning;
use App\Models\RetributionProposal;

class CheckSpatialPlanningConstraints extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'spatial:check-constraints';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Check spatial planning foreign key constraints and show statistics';

    /**
     * Execute the console command.
     */
    public function handle()
    {
        $this->info('Checking Spatial Planning Constraints...');
        $this->newLine();

        try {
            // Get total spatial plannings
            $totalSpatialPlannings = SpatialPlanning::count();
            
            // Get spatial plannings with retribution proposals
            $withProposals = SpatialPlanning::whereHas('retributionProposals')->count();
            
            // Get spatial plannings without retribution proposals  
            $withoutProposals = SpatialPlanning::whereDoesntHave('retributionProposals')->count();
            
            // Get total retribution proposals
            $totalProposals = RetributionProposal::count();
            
            // Get retribution proposals linked to spatial plannings
            $linkedProposals = RetributionProposal::whereNotNull('spatial_planning_id')->count();
            
            // Get standalone retribution proposals
            $standaloneProposals = RetributionProposal::whereNull('spatial_planning_id')->count();

            // Display statistics
            $this->table(
                ['Metric', 'Count'],
                [
                    ['Total Spatial Plannings', $totalSpatialPlannings],
                    ['├─ With Retribution Proposals', $withProposals],
                    ['└─ Without Retribution Proposals', $withoutProposals],
                    ['', ''],
                    ['Total Retribution Proposals', $totalProposals],
                    ['├─ Linked to Spatial Planning', $linkedProposals],
                    ['└─ Standalone Proposals', $standaloneProposals],
                ]
            );

            $this->newLine();

            // Show constraint implications
            if ($withProposals > 0) {
                $this->warn("⚠️  CONSTRAINT WARNING:");
                $this->warn("   {$withProposals} spatial plannings have retribution proposals linked to them.");
                $this->warn("   These cannot be deleted directly due to foreign key constraints.");
                $this->newLine();
                
                $this->info("💡 TRUNCATE OPTIONS:");
                $this->info("   • Use --truncate to delete ALL data (spatial plannings + linked proposals)");
                $this->info("   • Use --safe-truncate to delete only spatial plannings without proposals");
                $this->info("   • Manual cleanup: Delete proposals first, then spatial plannings");
            } else {
                $this->info("✅ No foreign key constraints found.");
                $this->info("   All spatial plannings can be safely truncated.");
            }

            $this->newLine();
            
            // Show example commands
            $this->info("📋 EXAMPLE COMMANDS:");
            $this->info("   php artisan spatial:init --truncate              # Delete all data (smart method)");
            $this->info("   php artisan spatial:init --safe-truncate         # Delete safe data only");
            $this->info("   php artisan spatial:init --force-truncate        # Force truncate (disable FK checks)");
            $this->info("   php artisan spatial:init file.csv --truncate     # Import with truncate");

            return 0;

        } catch (\Exception $e) {
            $this->error('Error checking constraints: ' . $e->getMessage());
            return 1;
        }
    }
}