feat(core): permissions query, finish bots impl

crates/core/permissions/src/models/channel.rs

@@ -1,5 +1,5 @@
 use once_cell::sync::Lazy;
-use std::ops::Add;
+use std::{fmt, ops::Add};
 
 /// Abstract channel type
 pub enum ChannelType {
@@ -102,6 +102,12 @@ pub enum ChannelPermission {
     GrantAll = u64::MAX,
 }
 
+impl fmt::Display for ChannelPermission {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        fmt::Debug::fmt(self, f)
+    }
+}
+
 impl_op_ex!(+ |a: &ChannelPermission, b: &ChannelPermission| -> u64 { *a as u64 | *b as u64 });
 impl_op_ex_commutative!(+ |a: &u64, b: &ChannelPermission| -> u64 { *a | *b as u64 });
 
@@ -136,4 +142,9 @@ pub static DEFAULT_PERMISSION_SERVER: Lazy<u64> = Lazy::new(|| {
     )
 });
 
-pub static DEFAULT_WEBHOOK_PERMISSIONS: Lazy<u64> = Lazy::new(|| ChannelPermission::SendMessage + ChannelPermission::SendEmbeds + ChannelPermission::Masquerade + ChannelPermission::React);
+pub static DEFAULT_WEBHOOK_PERMISSIONS: Lazy<u64> = Lazy::new(|| {
+    ChannelPermission::SendMessage
+        + ChannelPermission::SendEmbeds
+        + ChannelPermission::Masquerade
+        + ChannelPermission::React
+});

crates/core/permissions/src/models/mod.rs

@@ -3,6 +3,7 @@ mod server;
 mod user;
 
 pub use channel::*;
+use revolt_result::{create_error, Result};
 pub use server::*;
 pub use user::*;
 
@@ -31,6 +32,30 @@ impl PermissionValue {
     pub fn restrict(&mut self, v: u64) {
         self.0 &= v;
     }
+
+    /// Check whether certain a permission has been granted
+    pub fn has(&mut self, v: u64) -> bool {
+        (self.0 & v) == v
+    }
+
+    /// Check whether certain a channel permission has been granted
+    pub fn has_channel_permission(&mut self, permission: ChannelPermission) -> bool {
+        self.has(permission as u64)
+    }
+
+    /// Throw if missing channel permission
+    pub fn throw_if_lacking_channel_permission(
+        &mut self,
+        permission: ChannelPermission,
+    ) -> Result<()> {
+        if self.has_channel_permission(permission) {
+            Ok(())
+        } else {
+            Err(create_error!(MissingPermission {
+                permission: permission.to_string()
+            }))
+        }
+    }
 }
 
 impl From<i64> for PermissionValue {

crates/core/permissions/src/models/user.rs

@@ -1,3 +1,5 @@
+use std::fmt;
+
 /// User's relationship with another user (or themselves)
 pub enum RelationshipStatus {
     None,
@@ -21,5 +23,11 @@ pub enum UserPermission {
     Invite = 1 << 3,
 }
 
+impl fmt::Display for UserPermission {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        fmt::Debug::fmt(self, f)
+    }
+}
+
 impl_op_ex!(+ |a: &UserPermission, b: &UserPermission| -> u32 { *a as u32 | *b as u32 });
 impl_op_ex_commutative!(+ |a: &u32, b: &UserPermission| -> u32 { *a | *b as u32 });