add spatial plannings retribution calculations
This commit is contained in:
arifal hidayat
@@ -11,17 +11,16 @@ class RetributionFormula extends Model
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protected $fillable = [
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'building_function_id',
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'name',
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'formula_expression',
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'description',
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'is_active'
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'floor_number',
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'formula_expression'
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];
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protected $casts = [
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'is_active' => 'boolean'
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'floor_number' => 'integer'
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];
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/**
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* Building function relationship (1:1)
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* Building function relationship (n:1)
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*/
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public function buildingFunction(): BelongsTo
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{
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@@ -29,45 +28,47 @@ class RetributionFormula extends Model
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}
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/**
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* Retribution calculations relationship (1:n)
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* Retribution proposals relationship (1:n)
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*/
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public function retributionCalculations(): HasMany
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public function retributionProposals(): HasMany
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{
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return $this->hasMany(RetributionCalculation::class);
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return $this->hasMany(RetributionProposal::class);
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}
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/**
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* Scope: Active formulas only
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* Scope: By floor number
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*/
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public function scopeActive($query)
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public function scopeByFloor($query, int $floorNumber)
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{
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return $query->where('is_active', true);
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return $query->where('floor_number', $floorNumber);
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}
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/**
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* Execute formula calculation
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* Execute formula calculation with parameters and IP ketinggian
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*/
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public function calculate(float $luasBangunan, array $parameters): float
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public function calculate(float $luasBangunan, array $parameters, float $ipKetinggian): float
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{
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// Replace placeholders in formula with actual values
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$formula = $this->formula_expression;
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// Extract parameters
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$fungsi_bangunan = $parameters['fungsi_bangunan'] ?? 0;
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$ip_permanen = $parameters['ip_permanen'] ?? 0;
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$ip_kompleksitas = $parameters['ip_kompleksitas'] ?? 0;
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$indeks_lokalitas = $parameters['indeks_lokalitas'] ?? 0;
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// Calculate H13 (floor coefficient) using Excel formula
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$h13 = $fungsi_bangunan * ($ip_permanen + $ip_kompleksitas + (0.5 * $ipKetinggian));
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// Calculate full retribution using Excel formula
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$baseValue = 70350;
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$additionalFactor = 0.5;
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// Replace luas_bangunan
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$formula = str_replace('luas_bangunan', $luasBangunan, $formula);
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// Main calculation: (1*D13*(N13*70350*H13*1))
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$mainCalculation = 1 * $luasBangunan * ($indeks_lokalitas * $baseValue * $h13 * 1);
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// Replace parameter values
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foreach ($parameters as $key => $value) {
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$formula = str_replace($key, $value, $formula);
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}
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// Additional calculation: ($O$3*(1*D13*(N13*70350*H13*1)))
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$additionalCalculation = $additionalFactor * $mainCalculation;
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// Evaluate the mathematical expression
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// Note: In production, use a safer math expression evaluator
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try {
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$result = eval("return $formula;");
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return (float) $result;
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} catch (Exception $e) {
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throw new \Exception("Error calculating formula: " . $e->getMessage());
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}
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// Total: main + additional
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return $mainCalculation + $additionalCalculation;
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}
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/**
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@@ -87,19 +88,140 @@ class RetributionFormula extends Model
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}
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/**
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* Validate formula expression
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* Check if this formula applies to given floor number
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*/
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public function appliesTo(int $floorNumber): bool
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{
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// If floor_number is 0, formula applies to all floors
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if ($this->floor_number === 0) {
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return true;
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}
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// Otherwise, exact match required
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return $this->floor_number == $floorNumber;
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}
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/**
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* Get human readable floor description
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*/
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public function getFloorDescription(): string
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{
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if ($this->floor_number === 0) {
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return 'Semua lantai';
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}
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return "Lantai {$this->floor_number}";
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}
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/**
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* Get default formula expression
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*/
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public static function getDefaultFormula(): string
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{
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return '(fungsi_bangunan * (ip_permanen + ip_kompleksitas + (0.5 * ip_ketinggian)))';
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}
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/**
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* Validate formula expression syntax
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*/
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public function validateFormula(): bool
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{
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// Basic validation - check if formula contains required elements
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$requiredElements = ['luas_bangunan'];
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// Basic validation - check if formula contains required variables
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$requiredVariables = ['fungsi_bangunan', 'ip_permanen', 'ip_kompleksitas', 'ip_ketinggian'];
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foreach ($requiredElements as $element) {
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if (strpos($this->formula_expression, $element) === false) {
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foreach ($requiredVariables as $variable) {
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if (strpos($this->formula_expression, $variable) === false) {
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return false;
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}
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}
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return true;
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}
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/**
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* Get calculation breakdown for debugging
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*/
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public function getCalculationBreakdown(float $luasBangunan, array $parameters, float $ipKetinggian): array
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{
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// Extract parameters
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$fungsi_bangunan = $parameters['fungsi_bangunan'] ?? 0;
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$ip_permanen = $parameters['ip_permanen'] ?? 0;
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$ip_kompleksitas = $parameters['ip_kompleksitas'] ?? 0;
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$indeks_lokalitas = $parameters['indeks_lokalitas'] ?? 0;
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// Calculate H13 (floor coefficient)
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$h13 = $fungsi_bangunan * ($ip_permanen + $ip_kompleksitas + (0.5 * $ipKetinggian));
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// Calculate components
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$baseValue = 70350;
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$additionalFactor = 0.5;
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$mainCalculation = 1 * $luasBangunan * ($indeks_lokalitas * $baseValue * $h13 * 1);
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$additionalCalculation = $additionalFactor * $mainCalculation;
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$totalCalculation = $mainCalculation + $additionalCalculation;
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return [
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'input_parameters' => [
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'luas_bangunan' => $luasBangunan,
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'fungsi_bangunan' => $fungsi_bangunan,
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'ip_permanen' => $ip_permanen,
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'ip_kompleksitas' => $ip_kompleksitas,
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'ip_ketinggian' => $ipKetinggian,
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'indeks_lokalitas' => $indeks_lokalitas,
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'base_value' => $baseValue,
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'additional_factor' => $additionalFactor
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],
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'calculation_steps' => [
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'h13_calculation' => [
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'formula' => 'fungsi_bangunan * (ip_permanen + ip_kompleksitas + (0.5 * ip_ketinggian))',
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'calculation' => "{$fungsi_bangunan} * ({$ip_permanen} + {$ip_kompleksitas} + (0.5 * {$ipKetinggian}))",
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'result' => $h13
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],
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'main_calculation' => [
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'formula' => '1 * luas_bangunan * (indeks_lokalitas * base_value * h13 * 1)',
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'calculation' => "1 * {$luasBangunan} * ({$indeks_lokalitas} * {$baseValue} * {$h13} * 1)",
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'result' => $mainCalculation
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],
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'additional_calculation' => [
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'formula' => 'additional_factor * main_calculation',
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'calculation' => "{$additionalFactor} * {$mainCalculation}",
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'result' => $additionalCalculation
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],
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'total_calculation' => [
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'formula' => 'main_calculation + additional_calculation',
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'calculation' => "{$mainCalculation} + {$additionalCalculation}",
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'result' => $totalCalculation
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]
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],
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'formatted_results' => [
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'h13' => number_format($h13, 6),
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'main_calculation' => 'Rp ' . number_format($mainCalculation, 2),
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'additional_calculation' => 'Rp ' . number_format($additionalCalculation, 2),
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'total_calculation' => 'Rp ' . number_format($totalCalculation, 2)
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]
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];
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}
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/**
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* Check if this formula has been used in any proposals
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*/
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public function hasProposals(): bool
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{
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return $this->retributionProposals()->exists();
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}
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/**
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* Get total amount calculated using this formula
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*/
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public function getTotalCalculatedAmount(): float
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{
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return $this->retributionProposals()->sum('total_retribution_amount');
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}
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/**
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* Get count of proposals using this formula
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*/
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public function getProposalCount(): int
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{
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return $this->retributionProposals()->count();
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}
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}
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