<?php

namespace App\Http\Controllers;

use App\Services\MagentoCategoryMigrationService;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Cache;

class CustomersController extends Controller
{
    protected $migrationService;

    public function __construct(MagentoCategoryMigrationService $migrationService)
    {
        $this->migrationService = $migrationService;
    }

    /**
     * Show the customers page
     */
    public function index()
    {
        $m1Customers = $this->migrationService->getMagento1Customers();
        $m2Customers = $this->migrationService->getMagento2Customers();
        $m1CustomersNotInM2 = $this->migrationService->getM1CustomersNotInM2();
        $m2CustomersNotInM1 = $this->migrationService->getM2CustomersNotInM1();

        return view('customers.index', [
            'm1Customers' => $m1Customers,
            'm2Customers' => $m2Customers,
            'm1CustomersNotInM2' => $m1CustomersNotInM2,
            'm2CustomersNotInM1' => $m2CustomersNotInM1,
        ]);
    }

    /**
     * Migrate all customers from Magento 1 to Magento 2
     */
    public function migrateCustomers(Request $request)
    {
        try {
            // Handle both JSON and form data
            $dryRun = false;
            $progressKey = null;
            
            if ($request->isJson()) {
                $dryRun = $request->json()->get('dry_run', false);
                $progressKey = $request->json()->get('progress_key', null);
            } else {
                $dryRun = $request->input('dry_run', false);
                $progressKey = $request->input('progress_key', null);
            }
            
            // Convert string "true"/"false" to boolean if needed
            if (is_string($dryRun)) {
                $dryRun = filter_var($dryRun, FILTER_VALIDATE_BOOLEAN);
            }
            
            $result = $this->migrationService->migrateCustomers($dryRun, $progressKey);

            return response()->json($result, $result['success'] ? 200 : 400);

        } catch (\Exception $e) {
            Log::error('Customer migration error: ' . $e->getMessage());
            Log::error('Stack trace: ' . $e->getTraceAsString());
            
            return response()->json([
                'success' => false,
                'message' => 'Migration failed: ' . $e->getMessage(),
                'added' => 0,
                'updated' => 0,
                'errors' => 0,
                'log' => []
            ], 500);
        }
    }

    /**
     * Get customer migration progress
     */
    public function getMigrationProgress(Request $request)
    {
        try {
            $progressKey = $request->input('progress_key');
            
            if (empty($progressKey)) {
                return response()->json([
                    'success' => false,
                    'message' => 'Progress key is required'
                ], 400);
            }

            $progress = Cache::get($progressKey);
            
            if (!$progress) {
                return response()->json([
                    'success' => false,
                    'message' => 'Progress not found',
                    'progress' => null
                ], 404);
            }

            return response()->json([
                'success' => true,
                'progress' => $progress
            ]);

        } catch (\Exception $e) {
            Log::error('Get customer migration progress error: ' . $e->getMessage());
            
            return response()->json([
                'success' => false,
                'message' => 'Failed to get progress: ' . $e->getMessage()
            ], 500);
        }
    }

    /**
     * Delete a single customer from Magento 2
     */
    public function deleteM2Customer(Request $request, $customerId)
    {
        try {
            $result = $this->migrationService->deleteM2Customer($customerId);

            return response()->json($result, $result['success'] ? 200 : 400);

        } catch (\Exception $e) {
            Log::error('Delete M2 customer error: ' . $e->getMessage());
            
            return response()->json([
                'success' => false,
                'message' => 'Deletion failed: ' . $e->getMessage()
            ], 500);
        }
    }
}