-- Migration to convert messages table to use UUIDs for ID, RoomID, ParentID
-- We will recreate the table to ensure clean state

DROP TABLE IF EXISTS messages;

CREATE TABLE messages (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    room_id UUID NOT NULL REFERENCES rooms(id) ON DELETE CASCADE,
    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    content TEXT NOT NULL,
    type VARCHAR(50) NOT NULL DEFAULT 'text',
    parent_id UUID REFERENCES messages(id) ON DELETE SET NULL,
    is_edited BOOLEAN DEFAULT false,
    is_deleted BOOLEAN DEFAULT false,
    created_at TIMESTAMPTZ DEFAULT NOW(),
    updated_at TIMESTAMPTZ DEFAULT NOW(),
    deleted_at TIMESTAMPTZ
);

CREATE INDEX idx_messages_room_id_created_at ON messages(room_id, created_at DESC);
CREATE INDEX idx_messages_sender_id ON messages(user_id);
CREATE INDEX idx_messages_parent_id ON messages(parent_id);
CREATE INDEX idx_messages_deleted_at ON messages(deleted_at);