CREATE TABLE IF NOT EXISTS canned_responses (
    id SERIAL PRIMARY KEY,
    account_id INTEGER NOT NULL,
    content TEXT NOT NULL,
    short_code VARCHAR(255) NOT NULL,
    created_at TIMESTAMPTZ DEFAULT NOW(),
    updated_at TIMESTAMPTZ DEFAULT NOW(),
    deleted_at TIMESTAMPTZ
);
CREATE INDEX IF NOT EXISTS idx_canned_responses_account_id ON canned_responses(account_id);
CREATE UNIQUE INDEX IF NOT EXISTS idx_canned_short_code ON canned_responses(account_id, short_code) WHERE deleted_at IS NULL;
CREATE INDEX IF NOT EXISTS idx_canned_responses_deleted_at ON canned_responses(deleted_at);