ALTER TABLE "communication_rooms" DROP COLUMN IF EXISTS "matrix_room_id";
ALTER TABLE "communication_rooms" DROP COLUMN IF EXISTS "matrix_alias";
ALTER TABLE "communication_rooms" DROP COLUMN IF EXISTS "parent_space_room_id";

CREATE TABLE IF NOT EXISTS "communication_room_members" (
    "room_id" uuid NOT NULL REFERENCES "communication_rooms"("id") ON DELETE cascade,
    "user_id" uuid NOT NULL REFERENCES "auth_users"("id") ON DELETE cascade,
    "joined_at" timestamp with time zone DEFAULT now() NOT NULL,
    CONSTRAINT "communication_room_members_room_id_user_id_pk" PRIMARY KEY ("room_id", "user_id")
);

CREATE INDEX IF NOT EXISTS "communication_room_members_user_idx"
    ON "communication_room_members" ("user_id");

CREATE TABLE IF NOT EXISTS "communication_messages" (
    "id" bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    "tenant_id" bigint NOT NULL REFERENCES "tenants"("id") ON DELETE cascade,
    "room_id" uuid NOT NULL REFERENCES "communication_rooms"("id") ON DELETE cascade,
    "author_user_id" uuid NOT NULL REFERENCES "auth_users"("id"),
    "body" text NOT NULL,
    "created_at" timestamp with time zone DEFAULT now() NOT NULL
);

CREATE INDEX IF NOT EXISTS "communication_messages_room_message_idx"
    ON "communication_messages" ("room_id", "id");
CREATE INDEX IF NOT EXISTS "communication_messages_tenant_idx"
    ON "communication_messages" ("tenant_id");

CREATE TABLE IF NOT EXISTS "communication_room_reads" (
    "room_id" uuid NOT NULL REFERENCES "communication_rooms"("id") ON DELETE cascade,
    "user_id" uuid NOT NULL REFERENCES "auth_users"("id") ON DELETE cascade,
    "last_read_message_id" bigint,
    "read_at" timestamp with time zone DEFAULT now() NOT NULL,
    CONSTRAINT "communication_room_reads_room_id_user_id_pk" PRIMARY KEY ("room_id", "user_id")
);

INSERT INTO "communication_room_members" ("room_id", "user_id")
SELECT room.id, tenant_user.user_id
FROM "communication_rooms" room
JOIN "auth_tenant_users" tenant_user ON tenant_user.tenant_id = room.tenant_id
WHERE room.type IN ('general', 'room')
ON CONFLICT DO NOTHING;