hot fix #1

internal/controllers/expense_controller.go

@@ -0,0 +1,111 @@
+package controllers
+
+import (
+	"fmt"
+	"net/http"
+	"path/filepath"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+// ExpenseController handles expense-related operations
+type ExpenseController struct {
+	db *gorm.DB
+}
+
+// NewExpenseController creates a new expense controller
+func NewExpenseController(db *gorm.DB) *ExpenseController {
+	return &ExpenseController{db: db}
+}
+
+// UploadReceipt handles receipt upload and OCR processing
+func (ec *ExpenseController) UploadReceipt(c *gin.Context) {
+	// Get the uploaded file
+	file, header, err := c.Request.FormFile("receipt")
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "No file uploaded"})
+		return
+	}
+	defer file.Close()
+
+	// Validate file type
+	allowedTypes := []string{"image/jpeg", "image/jpg", "image/png", "application/pdf"}
+	if !contains(allowedTypes, header.Header.Get("Content-Type")) {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid file type. Only JPEG, PNG, and PDF files are allowed"})
+		return
+	}
+
+	// Generate unique filename
+	ext := filepath.Ext(header.Filename)
+	filename := fmt.Sprintf("receipt_%d%s", time.Now().UnixNano(), ext)
+
+	// Save file to uploads directory
+	filePath := filepath.Join("uploads", "receipts", filename)
+	if err := c.SaveUploadedFile(header, filePath); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save file"})
+		return
+	}
+
+	// Perform OCR processing (placeholder)
+	ocrData, accuracy, err := ec.performOCR(filePath)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "OCR processing failed"})
+		return
+	}
+
+	// Parse receipt data (placeholder)
+	parsedData := parseReceiptData(ocrData)
+
+	response := gin.H{
+		"file_path":    filePath,
+		"file_name":    filename,
+		"file_size":    header.Size,
+		"ocr_data":     ocrData,
+		"ocr_accuracy": accuracy,
+		"parsed_data":  parsedData,
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"receipt": response,
+	})
+}
+
+// performOCR performs OCR on the uploaded file
+func (ec *ExpenseController) performOCR(filePath string) (string, float64, error) {
+	// This is a placeholder for OCR implementation
+	// In a real implementation, you would use Tesseract or another OCR service
+	return "Sample OCR text", 95.0, nil
+}
+
+// parseReceiptData parses OCR text to extract structured data
+func parseReceiptData(ocrText string) map[string]interface{} {
+	// This is a placeholder for receipt parsing logic
+	// In a real implementation, you would use regex patterns or ML to extract:
+	// - Merchant name
+	// - Date
+	// - Total amount
+	// - VAT
+	// - Items
+
+	parsed := map[string]interface{}{
+		"merchant": "",
+		"date":     "",
+		"total":    0,
+		"vat":      0,
+		"items":    []map[string]interface{}{},
+	}
+
+	return parsed
+}
+
+// Helper function to check if slice contains string
+func contains(slice []string, item string) bool {
+	for _, s := range slice {
+		if s == item {
+			return true
+		}
+	}
+	return false
+}