<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use App\Models\User;

class SyncLegacySalaries extends Command
{
    protected $signature = 'import:legacy-salaries';
    protected $description = 'Sync legacy employee salaries to the local database to fix missing UI data';

    public function handle()
    {
        $this->info("Syncing legacy employee salaries to local UI database...");

        // Make sure legacy DB has the latest patches applied from SimulatePayslips
        $legacySalaries = DB::connection('legacy')->table('employee_salary_structures')->get();

        $syncedCount = 0;

        foreach ($legacySalaries as $legacyBase) {
            // Because legacy user IDs shifted during migration, we map them correctly via the exact User schema
            // By default, try exactly porting email lookup if possible. If not, default to user_id match assumptions 
            // from the ImportLegacyRamesebData mapping rule.

            // To mathematically guarantee Ana and Paul, we use the known mapping
            // Rame legacy User ID -> Local system mapping:
            // 2 -> likely 3 (Ana)
            // 8 -> likely 9 (Paul)
            // Actually, best to fetch legacy user email and map it perfectly
            $legacyUser = DB::connection('legacy')->table('users')->where('id', $legacyBase->user_id)->first();
            if (!$legacyUser) continue;

            $localUser = User::where('email', $legacyUser->email)->first();
            if (!$localUser) continue;

            // Default components must be strictly null to allow Laravel array plucking internally without throwing 500 Array exceptions
            $components = null;

            // If the pay frequency is semi-monthly, the UI `basic_salary` is expected to be the full monthly or cut-off?
            // Usually, basic_salary stores the monthly rate and payday math divides it.
            $grossMonthly = $legacyBase->gross_salary;
            $payFreq = $legacyBase->pay_frequency ?? 'monthly';
            
            DB::table('employee_salaries')->updateOrInsert(
                ['employee_id' => $localUser->id],
                [
                    'basic_salary' => $grossMonthly,
                    'pay_frequency' => $payFreq,
                    'components' => $components,
                    'is_active' => 1,
                    'calculation_status' => 'calculated',
                    'created_by' => 1,
                    'updated_at' => now(),
                    'created_at' => now()
                ]
            );

            $syncedCount++;
        }

        $this->info("Successfully synced $syncedCount employee salaries to the UI!");
    }
}