<?php

namespace App\Console\Commands;

use App\Models\Opportunity;
use App\Services\InvestmentIdentity;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Str;

class ReconcileInvestmentIdentity extends Command
{
    protected $signature = 'investment:reconcile-identities {--apply : Apply direct opportunity-ID mappings after backup}';

    protected $description = 'Dry-run or apply idempotent canonical mappings without changing legacy records or merging projects';

    public function handle(InvestmentIdentity $identity): int
    {
        if (! app()->environment('local', 'testing')) {
            $this->error('This migration command is restricted to local/testing environments.');

            return self::FAILURE;
        }
        $report = DB::transaction(function () use ($identity) {
            $ids = Opportunity::orderBy('id')->pluck('id');
            $missing = $ids->diff(DB::table('investment_item_opportunities')->pluck('opportunity_id'))->values();
            if ($this->option('apply')) {
                foreach ($missing as $id) {
                    $identity->forOpportunity($id);
                }
            }

            return ['generated_at' => now()->toIso8601String(), 'mode' => $this->option('apply') ? 'apply' : 'dry-run',
                'opportunity_count' => $ids->count(), 'missing_before' => $missing->count(),
                'missing_after' => $ids->diff(DB::table('investment_item_opportunities')->pluck('opportunity_id'))->count(),
                'unmapped_project_count' => DB::table('projects')->whereNull('deleted_at')->whereNotIn('id', DB::table('investment_item_projects')->select('project_id'))->count(),
                'changes_to_legacy_records' => 0, 'automatic_project_merges' => 0,
                'rule' => 'Map stable opportunity primary keys only. Project correspondence requires documentary reconciliation.'];
        });
        $path = 'zone-reconciliation/'.now()->format('Ymd-His').'-'.Str::uuid().'.json';
        Storage::disk('local')->put($path, json_encode($report, JSON_PRETTY_PRINT | JSON_THROW_ON_ERROR));
        $this->line(json_encode([...$report, 'private_report' => $path], JSON_THROW_ON_ERROR));

        return self::SUCCESS;
    }
}