Added storage endpoint and show on indes

controllers/storage.go

@@ -0,0 +1,71 @@
+package controllers
+
+import (
+	"net/http"
+	"os"
+	"path/filepath"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+)
+
+func getDirectorySize(path string) (int64, error) {
+	var size int64
+	err := filepath.Walk(path, func(_ string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() {
+			size += info.Size()
+		}
+		return err
+	})
+	return size, err
+}
+
+func HandleStorageInfo(c *gin.Context) {
+	uploadDir := os.Getenv("UPLOAD_DIR")
+	if uploadDir == "" {
+		uploadDir = "./uploads"
+	}
+
+	maxStorageEnv := os.Getenv("MAX_STORAGE_GB")
+	if maxStorageEnv == "" {
+		maxStorageEnv = "10"
+	}
+
+	maxStorageGB, err := strconv.ParseFloat(maxStorageEnv, 64)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Invalid MAX_STORAGE_GB configuration"})
+		return
+	}
+
+	if _, err := os.Stat(uploadDir); os.IsNotExist(err) {
+		if err := os.MkdirAll(uploadDir, 0755); err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create upload directory"})
+			return
+		}
+	}
+
+	usedBytes, err := getDirectorySize(uploadDir)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to calculate storage usage"})
+		return
+	}
+
+	maxBytes := int64(maxStorageGB * 1024 * 1024 * 1024)
+	usedGB := float64(usedBytes) / (1024 * 1024 * 1024)
+	usagePercent := (float64(usedBytes) / float64(maxBytes)) * 100
+
+	c.JSON(http.StatusOK, gin.H{
+		"storage": gin.H{
+			"used_bytes":     usedBytes,
+			"used_gb":        usedGB,
+			"max_gb":         maxStorageGB,
+			"max_bytes":      maxBytes,
+			"usage_percent":  usagePercent,
+			"available_gb":   maxStorageGB - usedGB,
+			"available_bytes": maxBytes - usedBytes,
+		},
+	})
+}