CREATE EXTENSION IF NOT EXISTS "uuid-ossp";

DROP TABLE IF EXISTS contacts CASCADE;
DROP TABLE IF EXISTS messages CASCADE;
DROP TABLE IF EXISTS scheduled_messages CASCADE;
DROP TABLE IF EXISTS scheduled_message_events CASCADE;
DROP TABLE IF EXISTS message_event_responses CASCADE;

CREATE TABLE IF NOT EXISTS contacts (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    phone_number TEXT NOT NULL,
    user_id UUID NOT NULL
);

CREATE TABLE IF NOT EXISTS messages (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    content TEXT NOT NULL,
    user_id UUID NOT NULL
);

CREATE TABLE IF NOT EXISTS scheduled_messages (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    scheduled timestamptz NOT NULL,
    created timestamptz DEFAULT now(),
    status TEXT CHECK (status IN ('PENDING', 'READY', 'PROCESSING', 'DONE')),
    user_id UUID NOT NULL
);

CREATE TABLE IF NOT EXISTS scheduled_message_events (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    recipient_id UUID NOT NULL,
    message_id UUID NOT NULL,
    scheduled_message_id UUID NOT NULL,
    created timestamptz DEFAULT now()
);

CREATE TABLE IF NOT EXISTS message_event_responses (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    scheduled_message_event_id UUID NOT NULL,
    response JSONB NOT NULL,
    user_id UUID NOT NULL,
    sent timestamptz NOT NULL
);