sibedas/database/seeders/RetributionProposalSeeder.php

<?php

namespace Database\Seeders;

use Illuminate\Database\Console\Seeds\WithoutModelEvents;
use Illuminate\Database\Seeder;
use App\Models\RetributionProposal;
use App\Models\SpatialPlanning;
use App\Models\BuildingFunction;
use App\Models\RetributionFormula;
use App\Models\FloorHeightIndex;
use App\Models\BuildingFunctionParameter;
use Carbon\Carbon;

class RetributionProposalSeeder extends Seeder
{
    /**
     * Run the database seeds.
     */
    public function run(): void
    {
        // Get some sample data
        $spatialPlannings = SpatialPlanning::take(5)->get();
        $buildingFunctions = BuildingFunction::whereNotNull('parent_id')->get(); // Only child functions
        
        if ($spatialPlannings->isEmpty() || $buildingFunctions->isEmpty()) {
            $this->command->warn('No spatial plannings or building functions found. Please seed them first.');
            return;
        }

        $sampleProposals = [
            [
                'spatial_planning_id' => $spatialPlannings->first()?->id,
                'building_function_code' => 'HUNIAN_SEDERHANA',
                'floor_number' => 2,
                'floor_area' => 45666,
                'total_building_area' => 91332, // 2 floors
                'notes' => 'Sample calculation for Hunian Sederhana'
            ],
            [
                'spatial_planning_id' => $spatialPlannings->skip(1)->first()?->id,
                'building_function_code' => 'USAHA_KECIL',
                'floor_number' => 1,
                'floor_area' => 150,
                'total_building_area' => 150,
                'notes' => 'Sample calculation for UMKM'
            ],
            [
                'spatial_planning_id' => null, // Testing nullable spatial_planning_id
                'building_function_code' => 'CAMPURAN_KECIL',
                'floor_number' => 3,
                'floor_area' => 200,
                'total_building_area' => 600,
                'notes' => 'Sample calculation without spatial planning link'
            ]
        ];

        foreach ($sampleProposals as $proposalData) {
            $buildingFunction = BuildingFunction::where('code', $proposalData['building_function_code'])->first();
            
            if (!$buildingFunction) {
                $this->command->warn("Building function not found: {$proposalData['building_function_code']}");
                continue;
            }

            // Get parameters
            $parameters = BuildingFunctionParameter::where('building_function_id', $buildingFunction->id)->first();
            $floorHeightIndex = FloorHeightIndex::where('floor_number', $proposalData['floor_number'])->first();
            $retributionFormula = RetributionFormula::where('building_function_id', $buildingFunction->id)
                ->where('floor_number', $proposalData['floor_number'])
                ->first();

            if (!$parameters || !$floorHeightIndex || !$retributionFormula) {
                $this->command->warn("Missing data for building function: {$buildingFunction->name}");
                continue;
            }

            // Calculate retribution using the Excel formula
            $floorArea = $proposalData['floor_area'];
            $fungsi_bangunan = $parameters->fungsi_bangunan;
            $ip_permanen = $parameters->ip_permanen;
            $ip_kompleksitas = $parameters->ip_kompleksitas;
            $ip_ketinggian = $floorHeightIndex->ip_ketinggian;
            $indeks_lokalitas = $parameters->indeks_lokalitas;
            $base_value = 70350;
            $additional_factor = 0.5;

            // Step 1: Calculate H13 (floor coefficient)
            $h13 = $fungsi_bangunan * ($ip_permanen + $ip_kompleksitas + (0.5 * $ip_ketinggian));

            // Step 2: Main calculation
            $main_calculation = 1 * $floorArea * ($indeks_lokalitas * $base_value * $h13 * 1);

            // Step 3: Additional (50%)
            $additional_calculation = $additional_factor * $main_calculation;

            // Step 4: Total
            $total_retribution = $main_calculation + $additional_calculation;

            // Prepare calculation parameters and breakdown
            $calculationParameters = [
                'fungsi_bangunan' => $fungsi_bangunan,
                'ip_permanen' => $ip_permanen,
                'ip_kompleksitas' => $ip_kompleksitas,
                'ip_ketinggian' => $ip_ketinggian,
                'indeks_lokalitas' => $indeks_lokalitas,
                'base_value' => $base_value,
                'additional_factor' => $additional_factor,
                'floor_area' => $floorArea
            ];

            $calculationBreakdown = [
                'h13_calculation' => [
                    'formula' => 'fungsi_bangunan * (ip_permanen + ip_kompleksitas + (0.5 * ip_ketinggian))',
                    'calculation' => "{$fungsi_bangunan} * ({$ip_permanen} + {$ip_kompleksitas} + (0.5 * {$ip_ketinggian}))",
                    'result' => $h13
                ],
                'main_calculation' => [
                    'formula' => '1 * floor_area * (indeks_lokalitas * base_value * h13 * 1)',
                    'calculation' => "1 * {$floorArea} * ({$indeks_lokalitas} * {$base_value} * {$h13} * 1)",
                    'result' => $main_calculation
                ],
                'additional_calculation' => [
                    'formula' => 'additional_factor * main_calculation',
                    'calculation' => "{$additional_factor} * {$main_calculation}",
                    'result' => $additional_calculation
                ],
                'total_calculation' => [
                    'formula' => 'main_calculation + additional_calculation',
                    'calculation' => "{$main_calculation} + {$additional_calculation}",
                    'result' => $total_retribution
                ]
            ];

            // Create the proposal
            RetributionProposal::create([
                'spatial_planning_id' => $proposalData['spatial_planning_id'],
                'building_function_id' => $buildingFunction->id,
                'retribution_formula_id' => $retributionFormula->id,
                'floor_number' => $proposalData['floor_number'],
                'floor_area' => $proposalData['floor_area'],
                'total_building_area' => $proposalData['total_building_area'],
                'ip_ketinggian' => $ip_ketinggian,
                'floor_retribution_amount' => $total_retribution,
                'total_retribution_amount' => $total_retribution, // For single floor, same as floor amount
                'calculation_parameters' => $calculationParameters,
                'calculation_breakdown' => $calculationBreakdown,
                'notes' => $proposalData['notes'],
                'calculated_at' => Carbon::now()
            ]);

            $this->command->info("Created retribution proposal for: {$buildingFunction->name} - Floor {$proposalData['floor_number']}");
            $this->command->info("  Amount: Rp " . number_format($total_retribution, 0, ',', '.'));
        }

        $this->command->info('Retribution Proposal seeding completed!');
        $this->command->info('Total proposals created: ' . RetributionProposal::count());
    }
}