new error system (+ some quick fixes)

internal/types/errors.go

@@ -0,0 +1,66 @@
+package types
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/gin-gonic/gin"
+)
+
+type StereoError struct {
+	Code       int
+	StatusCode int
+}
+
+func (e *StereoError) Throw(c *gin.Context, err error) {
+	c.JSON(e.StatusCode, gin.H{
+		"code":    e.Code,
+		"success": false,
+	})
+
+	if err != nil {
+		c.Error(err)
+	} else {
+		c.Error(errors.New(fmt.Sprintf("Got an error with code: %v", e.Code)))
+	}
+}
+
+var ErrorFileNotFound = StereoError{
+	Code:       0,
+	StatusCode: 404,
+}
+
+var ErrorReaderOpen = StereoError{
+	Code:       1,
+	StatusCode: 500,
+}
+
+var ErrorUnauthorized = StereoError{
+	Code:       2,
+	StatusCode: 401,
+}
+
+var ErrorInvalidParams = StereoError{
+	Code:       3,
+	StatusCode: 400,
+}
+
+var ErrorEmptyFile = StereoError{
+	Code:       4,
+	StatusCode: 400,
+}
+
+var ErrorInvalidFile = StereoError{
+	Code:       5,
+	StatusCode: 400,
+}
+
+var ErrorDatabase = StereoError{
+	Code:       6,
+	StatusCode: 500,
+}
+
+var ErrorS3 = StereoError{
+	Code:       7,
+	StatusCode: 500,
+}