Add role delete and change update

Signed-off-by: trivernis <trivernis@protonmail.com>

src/database/roles.rs

@@ -4,7 +4,9 @@
 
 use crate::database::models::Role;
 use crate::database::role_permissions::RolePermissions;
-use crate::database::{DatabaseResult, PostgresPool, Table, DEFAULT_ADMIN_EMAIL, ENV_ADMIN_EMAIL};
+use crate::database::{
+    DatabaseResult, PostgresPool, Table, ADMIN_ROLE_NAME, DEFAULT_ADMIN_EMAIL, ENV_ADMIN_EMAIL,
+};
 use crate::utils::error::DBError;
 use std::collections::HashSet;
 use std::iter::FromIterator;
@@ -112,21 +114,35 @@ impl Roles {
 
     pub fn update_role(
         &self,
+        old_name: String,
         name: String,
         description: Option<String>,
         permissions: Vec<i32>,
     ) -> DatabaseResult<Role> {
+        if old_name == ADMIN_ROLE_NAME {
+            return Err(DBError::GenericError(
+                "The admin role can't be altered!".to_string(),
+            ));
+        }
         let permissions = HashSet::from_iter(permissions.into_iter());
         let mut connection = self.pool.get()?;
         let mut transaction = connection.transaction()?;
 
         let id: i32 = transaction
-            .query_opt("SELECT id FROM roles WHERE name = $1", &[&name])?
+            .query_opt("SELECT id FROM roles WHERE name = $1", &[&old_name])?
             .ok_or(DBError::RecordDoesNotExist)?
             .get(0);
+        let name_exists =
+            transaction.query_opt("SELECT id FROM roles WHERE name = $1", &[&name])?;
+        if name_exists.is_some() {
+            return Err(DBError::GenericError(format!(
+                "A role with the name {} already exists!",
+                name
+            )));
+        }
         let update_result = transaction.query_one(
-            "UPDATE roles SET description = $2 WHERE id = $1 RETURNING *",
-            &[&id, &description],
+            "UPDATE roles SET name = $3, description = $2 WHERE id = $1 RETURNING *",
+            &[&id, &description, &name],
         )?;
         let current_permissions = transaction
             .query(
@@ -155,4 +171,23 @@ impl Roles {
 
         Ok(serde_postgres::from_row::<Role>(&update_result)?)
     }
+
+    /// Deletes a role if it exists
+    pub fn delete_role(&self, name: &String) -> DatabaseResult<()> {
+        if name == ADMIN_ROLE_NAME {
+            return Err(DBError::GenericError(
+                "The admin role can't be altered!".to_string(),
+            ));
+        }
+        let mut connection = self.pool.get()?;
+        let result = connection.query_opt("SELECT id FROM roles WHERE name = $1", &[name])?;
+
+        if result.is_none() {
+            Err(DBError::RecordDoesNotExist)
+        } else {
+            connection.query("DELETE FROM roles WHERE name = $1", &[name])?;
+
+            Ok(())
+        }
+    }
 }

src/server/documentation/mod.rs

@@ -32,7 +32,9 @@ impl RESTDocumentation {
     }
 
     fn landing(&self) -> String {
-        let types = self.paths.keys().fold("".to_string(), |a, b| {
+        let mut keys = self.paths.keys().cloned().collect::<Vec<String>>();
+        keys.sort();
+        let types = keys.into_iter().fold("".to_string(), |a, b| {
             format!("{}<br><a href='{}?path={2}'>{2}</a>", a, self.base_path, b)
         });
 
@@ -53,7 +55,7 @@ impl RESTDocumentation {
         let content = format!(
             "\
             <a href={}>Back</a>
-            <h1>{}: {}</h1>
+            <h1><code>{}: {}</code></h1>
             <p>{}</p>
             <h2>Input</h2>
             <code>{}</code>

src/server/documentation/style.css

@@ -8,6 +8,10 @@ body {
     font-family: "Fira Sans", "Noto Sans", sans-serif;
 }
 
+code {
+    font-family: "Fira Code", "DejaVu Sans Mono", monospace;
+}
+
 code > pre {
     font-family: "Fira Code", "DejaVu Sans Mono", monospace;
     max-width: 100%;

src/server/http_server.rs

@@ -13,14 +13,14 @@ use serde::Serialize;
 
 use crate::database::models::Role;
 use crate::database::permissions::{
-    CREATE_ROLE_PERMISSION, UPDATE_ROLE_PERMISSION, VIEW_ROLE_PERMISSION,
+    CREATE_ROLE_PERMISSION, DELETE_ROLE_PERMISSION, UPDATE_ROLE_PERMISSION, VIEW_ROLE_PERMISSION,
 };
 use crate::database::tokens::SessionTokens;
 use crate::database::Database;
 use crate::server::documentation::RESTDocumentation;
 use crate::server::messages::{
-    ErrorMessage, FullRoleData, LoginMessage, LogoutConfirmation, LogoutMessage, ModifyRoleRequest,
-    RefreshMessage,
+    DeleteRoleResponse, ErrorMessage, FullRoleData, LoginMessage, LogoutConfirmation,
+    LogoutMessage, ModifyRoleRequest, RefreshMessage,
 };
 use crate::utils::error::DBError;
 use crate::utils::get_user_id_from_token;
@@ -121,8 +121,11 @@ impl UserHttpServer {
                 (POST) (/roles/create) => {
                     Self::create_role(&database, request).unwrap_or_else(HTTPError::into)
                 },
-                (POST) (/roles/update) => {
-                    Self::update_role(&database, request).unwrap_or_else(HTTPError::into)
+                (POST) (/roles/{name:String}/update) => {
+                    Self::update_role(&database, request, name).unwrap_or_else(HTTPError::into)
+                },
+                (POST) (/roles/{name: String}/delete) => {
+                    Self::delete_role(&database, request, name).unwrap_or_else(HTTPError::into)
                 },
                 _ => if request.method() == "OPTIONS" {
                     Response::empty_204()
@@ -184,10 +187,15 @@ impl UserHttpServer {
             "Creates a new role",
         )?;
         doc.add_path::<ModifyRoleRequest, FullRoleData>(
-            "/roles/update",
+            "/roles/{name:String}/update",
             "POST",
             "Updates an existing role",
         )?;
+        doc.add_path::<(), DeleteRoleResponse>(
+            "/roles/{name:String}/delete",
+            "POST",
+            "Deletes a role",
+        )?;
 
         Ok(doc)
     }
@@ -280,7 +288,7 @@ impl UserHttpServer {
         .with_status_code(201))
     }
 
-    fn update_role(database: &Database, request: &Request) -> HTTPResult<Response> {
+    fn update_role(database: &Database, request: &Request, name: String) -> HTTPResult<Response> {
         require_permission!(database, request, UPDATE_ROLE_PERMISSION);
         let message: ModifyRoleRequest = serde_json::from_str(parse_string_body(request)?.as_str())
             .map_err(|e| HTTPError::new(e.to_string(), 400))?;
@@ -294,10 +302,12 @@ impl UserHttpServer {
             )))
             .with_status_code(400));
         }
-        let role =
-            database
-                .roles
-                .update_role(message.name, message.description, message.permissions)?;
+        let role = database.roles.update_role(
+            name,
+            message.name,
+            message.description,
+            message.permissions,
+        )?;
         let permissions = database.role_permission.by_role(role.id)?;
 
         Ok(Response::json(&FullRoleData {
@@ -306,6 +316,16 @@ impl UserHttpServer {
             name: role.name,
         }))
     }
+
+    fn delete_role(database: &Database, request: &Request, role: String) -> HTTPResult<Response> {
+        require_permission!(database, request, DELETE_ROLE_PERMISSION);
+        database.roles.delete_role(&role)?;
+
+        Ok(Response::json(&DeleteRoleResponse {
+            success: true,
+            role,
+        }))
+    }
 }
 
 /// Parses the body of a http request into a string representation

src/server/messages.rs

@@ -113,3 +113,9 @@ pub struct FullRoleData {
     pub name: String,
     pub permissions: Vec<Permission>,
 }
+
+#[derive(Serialize, JsonSchema)]
+pub struct DeleteRoleResponse {
+    pub success: bool,
+    pub role: String,
+}