CREATE TABLE IF NOT EXISTS captchas (
    id SERIAL PRIMARY KEY,
    proxy_id INTEGER REFERENCES proxies(id),
    hash CHAR(32),
    solution CHAR(6)
);

CREATE TYPE IF NOT EXISTS protocol_type AS ENUM ('http', 'https');

CREATE TABLE IF NOT EXISTS proxies (
    id SERIAL PRIMARY KEY,
    proto protocol_type,
    claimed BOOLEAN DEFAULT FALSE,
    host INET NOT NULL,
    port SMALLINT NOT NULL,
    username VARCHAR(16),
    password VARCHAR(32)
)