Can delete a custom emoji

src/controllers/routes.rs

@@ -107,6 +107,7 @@ pub fn get_routes() -> Vec<Route> {
         Route::post("/settings/delete_account_image", Box::new(settings_controller::delete_account_image)),
         Route::post("/settings/set_account_image_visibility", Box::new(settings_controller::set_account_image_visibility)),
         Route::post("/settings/upload_custom_emoji", Box::new(settings_controller::upload_custom_emoji)),
+        Route::post("/settings/delete_custom_emoji", Box::new(settings_controller::delete_custom_emoji)),
 
 
         // Friends controller

src/controllers/settings_controller.rs

@@ -192,4 +192,13 @@ pub fn upload_custom_emoji(r: &mut HttpRequestHandler) -> RequestResult {
     })?;
 
     r.set_response(ResCreateCustomEmoji::new(emoji_id))
+}
+
+/// Delete custom emoji
+pub fn delete_custom_emoji(r: &mut HttpRequestHandler) -> RequestResult {
+    let emoji = r.post_emoji_id("emojiID")?;
+
+    custom_emojies_helper::delete(&emoji)?;
+
+    r.success("Emoji deleted.")
 }

src/data/custom_emoji.rs

@@ -2,7 +2,10 @@
 //!
 //! @author Pierre Hubert
 
+use std::path::PathBuf;
+
 use crate::data::user::UserID;
+use crate::utils::user_data_utils::user_data_path;
 
 #[derive(Debug)]
 pub struct CustomEmoji {
@@ -10,4 +13,11 @@ pub struct CustomEmoji {
     pub user_id: UserID,
     pub shortcut: String,
     pub path: String,
+}
+
+impl CustomEmoji {
+    /// Get the system path pointing on this custom emoji
+    pub fn sys_path(&self) -> PathBuf {
+        user_data_path(self.path.as_ref())
+    }
 }

src/data/http_request_handler.rs

@@ -15,12 +15,13 @@ use crate::controllers::routes::RequestResult;
 use crate::data::api_client::APIClient;
 use crate::data::comment::Comment;
 use crate::data::config::conf;
+use crate::data::custom_emoji::CustomEmoji;
 use crate::data::error::{ExecError, ResultBoxError};
 use crate::data::group::GroupAccessLevel;
 use crate::data::group_id::GroupID;
 use crate::data::post::{Post, PostAccessLevel};
 use crate::data::user::UserID;
-use crate::helpers::{account_helper, api_helper, comments_helper, conversations_helper, friends_helper, groups_helper, movies_helper, posts_helper, user_helper, virtual_directory_helper};
+use crate::helpers::{account_helper, api_helper, comments_helper, conversations_helper, custom_emojies_helper, friends_helper, groups_helper, movies_helper, posts_helper, user_helper, virtual_directory_helper};
 use crate::helpers::virtual_directory_helper::VirtualDirType;
 use crate::utils::pdf_utils::is_valid_pdf;
 use crate::utils::string_utils::{check_emoji_code, check_string_before_insert, check_url, remove_html_nodes};
@@ -682,4 +683,20 @@ impl HttpRequestHandler {
 
         Ok(emoji_shortcut)
     }
+
+    /// Get information about an emoji included in a POST request
+    pub fn post_emoji_id(&mut self, field: &str) -> ResultBoxError<CustomEmoji> {
+        let emoji_id = self.post_u64(field)?;
+
+        let info = self.ok_or_not_found(
+            custom_emojies_helper::get_single(emoji_id),
+            "Requested emoji not found!"
+        )?;
+
+        if &info.user_id != self.user_id_ref()? {
+            self.forbidden("You do not own this emoji!".to_string())?;
+        }
+
+        Ok(info)
+    }
 }

src/helpers/custom_emojies_helper.rs

@@ -16,6 +16,13 @@ pub fn get_list_user(user_id: &UserID) -> ResultBoxError<Vec<CustomEmoji>> {
         .exec(db_to_custom_emoji)
 }
 
+/// Get information about a single emoji
+pub fn get_single(emoji_id: u64) -> ResultBoxError<CustomEmoji> {
+    database::QueryInfo::new(EMOJIS_TABLE)
+        .cond_u64("id", emoji_id)
+        .query_row(db_to_custom_emoji)
+}
+
 /// Check if a given user already as an emoji shortcut or not
 pub fn has_user_similar_shortcut(user_id: &UserID, shortcut: &str) -> ResultBoxError<bool> {
     database::QueryInfo::new(EMOJIS_TABLE)
@@ -34,6 +41,19 @@ pub fn insert(emoji: &NewCustomEmoji) -> ResultBoxError<u64> {
         .insert_expect_result()
 }
 
+/// Delete a custom emoji
+pub fn delete(c: &CustomEmoji) -> ResultBoxError {
+    let path = c.sys_path();
+
+    if path.exists() {
+        std::fs::remove_file(path)?;
+    }
+
+    database::DeleteQuery::new(EMOJIS_TABLE)
+        .cond_u64("id", c.id)
+        .exec()
+}
+
 /// Turn a database entry into a [CustomEmoji]
 fn db_to_custom_emoji(row: &database::RowResult) -> ResultBoxError<CustomEmoji> {
     Ok(CustomEmoji {