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authorization.go
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/
authorization.go
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package middlewares
import (
"fmt"
"net/http"
"strconv"
"github.com/gin-gonic/gin"
"github.com/golang-jwt/jwt/v4"
"github.com/szczynk/MyGram/models"
)
func PhotoAuthorization(puc models.PhotoUsecase) gin.HandlerFunc {
return func(c *gin.Context) {
var (
photo models.Photo
err error
)
photoIDStr := c.Param("id")
photoIDInt, err := strconv.Atoi(photoIDStr)
if err != nil {
c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{
"error": "Bad Request",
"message": "Failed to cast photo id to int",
})
return
}
userData := c.MustGet("userData").(jwt.MapClaims)
userID := uint(userData["id"].(float64))
photoID := uint(photoIDInt)
err = puc.GetByUserID(c.Request.Context(), &photo, photoID)
if err != nil {
c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
"error": "Not Found",
"message": fmt.Sprintf("Photo with id %s doesn't exist", photoIDStr),
})
return
}
if photo.UserID != userID {
c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
"error": "Unauthorized",
"message": "You don't have permission to view or edit this photo",
})
return
}
}
}
func CommentEditDelAuthorization(cuc models.CommentUsecase) gin.HandlerFunc {
return func(c *gin.Context) {
var (
comment models.Comment
err error
)
commentIDStr := c.Param("id")
commentIDInt, err := strconv.Atoi(commentIDStr)
if err != nil {
c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{
"error": "Bad Request",
"message": "Failed to cast comment id to int",
})
return
}
userData := c.MustGet("userData").(jwt.MapClaims)
userID := uint(userData["id"].(float64))
commentID := uint(commentIDInt)
err = cuc.GetByUserID(c.Request.Context(), &comment, commentID)
if err != nil {
c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
"error": "Not Found",
"message": fmt.Sprintf("Comment with id %s doesn't exist", commentIDStr),
})
return
}
if comment.UserID != userID {
c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
"error": "Unauthorized",
"message": "You don't have permission to view or edit this comment",
})
return
}
}
}
func SocialMediaAuthorization(cuc models.SocialMediaUsecase) gin.HandlerFunc {
return func(c *gin.Context) {
var (
socialMedia models.SocialMedia
err error
)
socialMediaIDStr := c.Param("id")
socialMediaIDInt, err := strconv.Atoi(socialMediaIDStr)
if err != nil {
c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{
"error": "Bad Request",
"message": "Failed to cast social media id to int",
})
return
}
userData := c.MustGet("userData").(jwt.MapClaims)
userID := uint(userData["id"].(float64))
socialMediaID := uint(socialMediaIDInt)
err = cuc.GetByUserID(c.Request.Context(), &socialMedia, socialMediaID)
if err != nil {
c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
"error": "Not Found",
"message": fmt.Sprintf("SocialMedia with id %s doesn't exist", socialMediaIDStr),
})
return
}
if socialMedia.UserID != userID {
c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
"error": "Unauthorized",
"message": "You don't have permission to view or edit this social media",
})
return
}
}
}