update retribution calculation spatial plannings

2025-06-17 17:58:37 +07:00
parent 236b6f9bfc
commit 6946fa7074
14 changed files with 1069 additions and 1 deletions
--- a/app/Models/RetributionFormula.php
+++ b/app/Models/RetributionFormula.php
@@ -0,0 +1,105 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class RetributionFormula extends Model
+{
+    protected $fillable = [
+        'building_function_id',
+        'name',
+        'formula_expression',
+        'description',
+        'is_active'
+    ];
+
+    protected $casts = [
+        'is_active' => 'boolean'
+    ];
+
+    /**
+     * Building function relationship (1:1)
+     */
+    public function buildingFunction(): BelongsTo
+    {
+        return $this->belongsTo(BuildingFunction::class);
+    }
+
+    /**
+     * Retribution calculations relationship (1:n)
+     */
+    public function retributionCalculations(): HasMany
+    {
+        return $this->hasMany(RetributionCalculation::class);
+    }
+
+    /**
+     * Scope: Active formulas only
+     */
+    public function scopeActive($query)
+    {
+        return $query->where('is_active', true);
+    }
+
+    /**
+     * Execute formula calculation
+     */
+    public function calculate(float $luasBangunan, array $parameters): float
+    {
+        // Replace placeholders in formula with actual values
+        $formula = $this->formula_expression;
+        
+        // Replace luas_bangunan
+        $formula = str_replace('luas_bangunan', $luasBangunan, $formula);
+        
+        // Replace parameter values
+        foreach ($parameters as $key => $value) {
+            $formula = str_replace($key, $value, $formula);
+        }
+        
+        // Evaluate the mathematical expression
+        // Note: In production, use a safer math expression evaluator
+        try {
+            $result = eval("return $formula;");
+            return (float) $result;
+        } catch (Exception $e) {
+            throw new \Exception("Error calculating formula: " . $e->getMessage());
+        }
+    }
+
+    /**
+     * Get formula with parameter placeholders replaced for display
+     */
+    public function getDisplayFormula(array $parameters = []): string
+    {
+        $formula = $this->formula_expression;
+        
+        if (!empty($parameters)) {
+            foreach ($parameters as $key => $value) {
+                $formula = str_replace($key, "({$key}={$value})", $formula);
+            }
+        }
+        
+        return $formula;
+    }
+
+    /**
+     * Validate formula expression
+     */
+    public function validateFormula(): bool
+    {
+        // Basic validation - check if formula contains required elements
+        $requiredElements = ['luas_bangunan'];
+        
+        foreach ($requiredElements as $element) {
+            if (strpos($this->formula_expression, $element) === false) {
+                return false;
+            }
+        }
+        
+        return true;
+    }
+}