remove(types)!: remove members from CreateGroup

Now a group can only be created with the creator as the only initial
member. This forbids group creator from adding other members without
their consent. Additional members can join the group later at their own
will.

blah-types/src/lib.rs

@@ -353,9 +353,6 @@ pub enum CreateRoomPayload {
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct CreateGroup {
     pub attrs: RoomAttrs,
-    /// The initial member list. Besides invariants of `RoomMemberList`, this also must include the
-    /// room creator themselves, with the highest permission (-1).
-    pub members: RoomMemberList,
     pub title: String,
 }
 

blahctl/src/main.rs

@@ -4,8 +4,8 @@ use std::{fs, io};
 
 use anyhow::{Context, Result};
 use blah_types::{
-    bitflags, get_timestamp, ChatPayload, CreateGroup, CreateRoomPayload, Id, MemberPermission,
-    RichText, RoomAttrs, RoomMember, RoomMemberList, ServerPermission, Signed, UserKey,
+    bitflags, get_timestamp, ChatPayload, CreateGroup, CreateRoomPayload, Id, RichText, RoomAttrs,
+    ServerPermission, Signed, UserKey,
 };
 use ed25519_dalek::pkcs8::spki::der::pem::LineEnding;
 use ed25519_dalek::pkcs8::{DecodePrivateKey, DecodePublicKey, EncodePrivateKey, EncodePublicKey};
@@ -220,12 +220,6 @@ async fn main_api(api_url: Url, command: ApiCommand) -> Result<()> {
             let payload = CreateRoomPayload::Group(CreateGroup {
                 attrs: attrs.unwrap_or_default(),
                 title,
-                // The CLI does not support passing multiple members because `User` itself is a
-                // disjoint arg-group.
-                members: RoomMemberList(vec![RoomMember {
-                    permission: MemberPermission::ALL,
-                    user: UserKey(key.verifying_key().to_bytes()),
-                }]),
             });
             let payload = Signed::sign(&key, get_timestamp(), &mut OsRng, payload)?;
 

blahd/src/lib.rs

@@ -363,44 +363,34 @@ async fn room_create_group(
         ));
     }
 
-    let members = &op.members.0;
-    if !members
-        .iter()
-        .any(|m| m.user == user && m.permission == MemberPermission::ALL)
-    {
-        return Err(error_response!(
-            StatusCode::BAD_REQUEST,
-            "deserialization",
-            "invalid initial members",
-        ));
-    }
-
-    let mut conn = st.db.get();
-    let Some(true) = conn
+    let conn = st.db.get();
+    let (uid, _perm) = conn
         .query_row(
             r"
-            SELECT `permission`
+            SELECT `uid`, `permission`
             FROM `user`
             WHERE `userkey` = ?
             ",
             params![user],
             |row| {
-                let perm = row.get::<_, ServerPermission>("permission")?;
-                Ok(perm.contains(ServerPermission::CREATE_ROOM))
+                Ok((
+                    row.get::<_, i64>("uid")?,
+                    row.get::<_, ServerPermission>("permission")?,
+                ))
             },
         )
         .optional()?
-    else {
-        return Err(error_response!(
+        .filter(|(_, perm)| perm.contains(ServerPermission::CREATE_ROOM))
+        .ok_or_else(|| {
+            error_response!(
                 StatusCode::FORBIDDEN,
                 "permission_denied",
-            "user does not have permission to create room",
-        ));
-    };
+                "the user does not exist or does not have permission to create room",
+            )
+        })?;
 
-    let txn = conn.transaction()?;
     let rid = Id::gen();
-    txn.execute(
+    conn.execute(
         r"
         INSERT INTO `room` (`rid`, `title`, `attrs`)
         VALUES (:rid, :title, :attrs)
@@ -411,32 +401,17 @@ async fn room_create_group(
             ":attrs": op.attrs,
         },
     )?;
-    let mut insert_user = txn.prepare(
-        r"
-        INSERT INTO `user` (`userkey`)
-        VALUES (?)
-        ON CONFLICT (`userkey`) DO NOTHING
-        ",
-    )?;
-    let mut insert_member = txn.prepare(
+    conn.execute(
         r"
         INSERT INTO `room_member` (`rid`, `uid`, `permission`)
-        SELECT :rid, `uid`, :permission
-        FROM `user`
-        WHERE `userkey` = :userkey
+        VALUES (:rid, :uid, :perm)
         ",
-    )?;
-    for member in members {
-        insert_user.execute(params![member.user])?;
-        insert_member.execute(named_params! {
+        named_params! {
             ":rid": rid,
-            ":userkey": member.user,
-            ":permission": member.permission,
-        })?;
-    }
-    drop(insert_member);
-    drop(insert_user);
-    txn.commit()?;
+            ":uid": uid,
+            ":perm": MemberPermission::ALL,
+        },
+    )?;
 
     Ok(Json(rid))
 }

blahd/tests/webapi.rs

@@ -8,8 +8,8 @@ use std::sync::{Arc, LazyLock};
 use anyhow::Result;
 use blah_types::{
     get_timestamp, AuthPayload, ChatPayload, CreateGroup, CreatePeerChat, CreateRoomPayload, Id,
-    MemberPermission, RichText, RoomAdminOp, RoomAdminPayload, RoomAttrs, RoomMember,
-    RoomMemberList, RoomMetadata, ServerPermission, Signed, SignedChatMsg, UserKey, WithMsgId,
+    MemberPermission, RichText, RoomAdminOp, RoomAdminPayload, RoomAttrs, RoomMetadata,
+    ServerPermission, Signed, SignedChatMsg, UserKey, WithMsgId,
 };
 use blahd::{ApiError, AppState, Database, RoomList, RoomMsgs};
 use ed25519_dalek::SigningKey;
@@ -120,10 +120,6 @@ impl Server {
             &mut *self.rng.borrow_mut(),
             CreateRoomPayload::Group(CreateGroup {
                 attrs,
-                members: RoomMemberList(vec![RoomMember {
-                    permission: MemberPermission::ALL,
-                    user: UserKey(key.verifying_key().to_bytes()),
-                }]),
                 title: title.to_string(),
             }),
         );

docs/webapi.yaml

@@ -612,16 +612,6 @@ components:
                       const: 'create_room'
                     title:
                       type: string
-                    members:
-                      type: array
-                      items:
-                        type: object
-                        properties:
-                          user:
-                            type: string
-                          permission:
-                            type: integer
-                            format: int64
                 - type: object
                   properties:
                     typ: