From 9abba77cca10650a597aa8ae2430e3cf84612f86 Mon Sep 17 00:00:00 2001
From: kirari04 <lev@saminskij.ch>
Date: Tue, 9 Apr 2024 09:37:58 +0200
Subject: [PATCH] implemented delete tag functionality

---
 controllers/DeleteTagController.go | 25 +++++++++++++++++++
 logic/DeleteTag.go                 | 39 ++++++++++++++++++++++++++++++
 models/Tag.go                      |  5 ++++
 routes/api.go                      |  1 +
 4 files changed, 70 insertions(+)
 create mode 100755 controllers/DeleteTagController.go
 create mode 100755 logic/DeleteTag.go

diff --git a/controllers/DeleteTagController.go b/controllers/DeleteTagController.go
new file mode 100755
index 0000000..c0cf333
--- /dev/null
+++ b/controllers/DeleteTagController.go
@@ -0,0 +1,25 @@
+package controllers
+
+import (
+	"ch/kirari04/videocms/helpers"
+	"ch/kirari04/videocms/logic"
+	"ch/kirari04/videocms/models"
+
+	"github.com/labstack/echo/v4"
+)
+
+func DeleteTagController(c echo.Context) error {
+	// parse & validate request
+	var validator models.TagDeleteValidation
+	if status, err := helpers.Validate(c, &validator); err != nil {
+		return c.String(status, err.Error())
+	}
+
+	status, err := logic.DeleteTag(validator.TagID, validator.FileID, c.Get("UserID").(uint))
+
+	if err != nil {
+		return c.String(status, err.Error())
+	}
+
+	return c.NoContent(status)
+}
diff --git a/logic/DeleteTag.go b/logic/DeleteTag.go
new file mode 100755
index 0000000..2c1762d
--- /dev/null
+++ b/logic/DeleteTag.go
@@ -0,0 +1,39 @@
+package logic
+
+import (
+	"ch/kirari04/videocms/inits"
+	"ch/kirari04/videocms/models"
+	"errors"
+	"log"
+	"net/http"
+
+	"github.com/labstack/echo/v4"
+)
+
+func DeleteTag(tagId uint, fromLinkId uint, userId uint) (status int, err error) {
+	//check if requested folder exists (if set)
+	var link models.Link
+	if err := inits.DB.First(&link, fromLinkId).Error; err != nil {
+		return http.StatusBadRequest, errors.New("link doesn't exist")
+	}
+	if link.UserID != userId {
+		return http.StatusBadRequest, errors.New("link doesn't exist")
+	}
+
+	// check if tag exists
+	var tag models.Tag
+	if err := inits.DB.First(&tag, tagId).Error; err != nil {
+		return http.StatusBadRequest, errors.New("tag doesn't exist")
+	}
+
+	if tag.UserId != userId {
+		return http.StatusBadRequest, errors.New("tag doesn't exist")
+	}
+
+	if err := inits.DB.Model(&link).Association("Tags").Delete(&tag); err != nil {
+		log.Printf("Error removing tag: %v", err)
+		return http.StatusInternalServerError, echo.ErrInternalServerError
+	}
+
+	return http.StatusOK, nil
+}
diff --git a/models/Tag.go b/models/Tag.go
index 8dc8525..b16eaf7 100644
--- a/models/Tag.go
+++ b/models/Tag.go
@@ -25,3 +25,8 @@ type TagCreateValidation struct {
 	Name   string `validate:"required,min=1,max=120" json:"Name" form:"Name"`
 	FileID uint   `validate:"required,number" json:"FileID" form:"FileID"`
 }
+
+type TagDeleteValidation struct {
+	TagID  uint `validate:"required,number" json:"TagID" form:"TagID"`
+	FileID uint `validate:"required,number" json:"FileID" form:"FileID"`
+}
diff --git a/routes/api.go b/routes/api.go
index 09fa0c7..46591ef 100755
--- a/routes/api.go
+++ b/routes/api.go
@@ -53,6 +53,7 @@ func Api() {
 	protectedApi.GET("/files", controllers.ListFiles)
 	protectedApi.DELETE("/files", controllers.DeleteFilesController)
 	protectedApi.POST("/file/tag", controllers.CreateTagController)
+	protectedApi.DELETE("/file/tag", controllers.DeleteTagController)
 
 	protectedApi.GET("/account", controllers.GetAccount)
 	protectedApi.GET("/account/settings", controllers.GetUserSettingsController)