add button to add new image to class closes #15

logic/utils/handler.go

@@ -1,9 +1,11 @@
 package utils
 
 import (
+	"bytes"
 	"database/sql"
 	"errors"
 	"fmt"
+	"io"
 	"net/http"
 	"os"
 	"path"
@@ -89,7 +91,7 @@ func (x *Handle) PostAuth(path string, authLevel dbtypes.UserType, fn func(c *Co
 	x.posts = append(x.posts, HandleFunc{path, inner_fn})
 }
 
-func PostAuthJson[T interface{}](x *Handle, path string, authLevel dbtypes.UserType, fn func(c *Context, obj *T) *Error) {
+func PostAuthJson[T interface{}](x *Handle, path string, authLevel dbtypes.UserType, fn func(c *Context, dat *T) *Error) {
 	inner_fn := func(c *Context) *Error {
 		if !c.CheckAuthLevel(authLevel) {
 			return nil
@@ -107,6 +109,56 @@ func PostAuthJson[T interface{}](x *Handle, path string, authLevel dbtypes.UserT
 	x.posts = append(x.posts, HandleFunc{path, inner_fn})
 }
 
+func PostAuthFormJson[T interface{}](x *Handle, path string, authLevel dbtypes.UserType, fn func(c *Context, dat *T, file []byte) *Error) {
+	inner_fn := func(c *Context) *Error {
+		if !c.CheckAuthLevel(1) {
+			return nil
+		}
+
+		read_form, err := c.R.MultipartReader()
+		if err != nil {
+			return c.JsonBadRequest("Please provide a valid form data request!")
+		}
+
+		var json_data string
+		var file []byte
+
+		for {
+			part, err_part := read_form.NextPart()
+			if err_part == io.EOF {
+				break
+			} else if err_part != nil {
+				return c.JsonBadRequest("Please provide a valid form data request!")
+			}
+			if part.FormName() == "json_data" {
+				buf := new(bytes.Buffer)
+				buf.ReadFrom(part)
+				json_data = buf.String()
+			}
+			if part.FormName() == "file" {
+				buf := new(bytes.Buffer)
+				buf.ReadFrom(part)
+				file = buf.Bytes()
+			}
+		}
+
+		if !c.CheckAuthLevel(authLevel) {
+			return nil
+		}
+
+		dat := new(T)
+
+		decoder := json.NewDecoder(strings.NewReader(json_data))
+		if err := c.decodeAndValidade(decoder, dat); err != nil {
+			return err
+		}
+
+		return fn(c, dat, file)
+	}
+
+	x.posts = append(x.posts, HandleFunc{path, inner_fn})
+}
+
 func (x *Handle) Delete(path string, fn func(c *Context) *Error) {
 	x.deletes = append(x.deletes, HandleFunc{path, fn})
 }
@@ -200,7 +252,7 @@ func (c Context) GetLogger() *log.Logger {
 }
 
 func (c Context) GetHost() string {
-    return c.Handle.Config.Hostname
+	return c.Handle.Config.Hostname
 }
 
 func (c Context) Query(query string, args ...any) (*sql.Rows, error) {