CREATE TABLE IF NOT EXISTS seen_hosts (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    ip_address TEXT NOT NULL UNIQUE
);

CREATE TABLE IF NOT EXISTS seen_users (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    user TEXT NOT NULL UNIQUE
);

CREATE TABLE IF NOT EXISTS seen_routes (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    route TEXT NOT NULL,
    method TEXT NOT NULL,
    UNIQUE(route, method)
);

CREATE TABLE IF NOT EXISTS response_code (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    code INTEGER NOT NULL UNIQUE
);

CREATE TABLE IF NOT EXISTS referer (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    referer TEXT NOT NULL UNIQUE
);

CREATE TABLE IF NOT EXISTS ua (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    ua TEXT NOT NULL UNIQUE
);

CREATE TABLE IF NOT EXISTS requests (
    id INTEGER PRIMARY KEY,
    uuid TEXT NOT NULL UNIQUE,
    date INTEGER NOT NULL,
    host_id INTEGER NOT NULL REFERENCES seen_hosts(id) ON DELETE CASCADE,
    user_id INTEGER NOT NULL REFERENCES seen_users(id) ON DELETE CASCADE,
    route_id INTEGER NOT NULL REFERENCES seen_routes(id) ON DELETE CASCADE,
    referer_id INTEGER NOT NULL REFERENCES referer(id) ON DELETE CASCADE,
    ua_id INTEGER NOT NULL REFERENCES ua(id) ON DELETE CASCADE,
    response_code_id INTEGER NOT NULL REFERENCES response_code(id) ON DELETE RESTRICT
);

/* Urchin stuff - it's powerful to be able to do things in backend based on campaign, even if you use a JS frontend. */
CREATE TABLE IF NOT EXISTS urchin_source (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    value TEXT NOT NULL UNIQUE
);
CREATE TABLE IF NOT EXISTS urchin_medium (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    value TEXT NOT NULL UNIQUE
);
CREATE TABLE IF NOT EXISTS urchin_campaign (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    value TEXT NOT NULL UNIQUE
);
CREATE TABLE IF NOT EXISTS urchin_term (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    value TEXT NOT NULL UNIQUE
);
CREATE TABLE IF NOT EXISTS urchin_content (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    value TEXT NOT NULL UNIQUE
);

CREATE TABLE IF NOT EXISTS urchin (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    request_id INTEGER NOT NULL UNIQUE REFERENCES requests(id) ON DELETE CASCADE,
    source_id INTEGER NOT NULL REFERENCES urchin_source(id) ON DELETE CASCADE,
    medium_id INTEGER REFERENCES urchin_medium(id) ON DELETE CASCADE,
    campaign_id INTEGER REFERENCES urchin_campaign(id) ON DELETE CASCADE,
    term_id INTEGER REFERENCES urchin_term(id) ON DELETE CASCADE,
    content_id INTEGER REFERENCES urchin_content(id) ON DELETE CASCADE
);

CREATE VIEW IF NOT EXISTS urchin_requests AS 
    SELECT
        u.id,
        r.uuid   AS request_uuid,
        us.value AS utm_source,
        um.value AS utm_medium,
        uc.value AS utm_campaign,
        ut.value AS utm_term,
        uo.value AS utm_content
    FROM
        urchin AS u
    JOIN
        requests AS r ON u.request_id = r.id
    JOIN
        urchin_source AS us ON us.id = u.source_id
    LEFT JOIN
        urchin_medium AS um ON um.id = u.medium_id
    LEFT JOIN
        urchin_campaign AS uc ON uc.id = u.campaign_id
    LEFT JOIN
        urchin_term AS ut ON ut.id = u.term_id
    LEFT JOIN
        urchin_content AS uo ON uo.id = u.content_id;

/* Make urchin_requests a writable view via triggers.  We will always stomp the main row, as the last update will be what we want. */
CREATE TRIGGER IF NOT EXISTS insert_urchin_requests INSTEAD OF INSERT ON urchin_requests BEGIN
    INSERT OR IGNORE INTO urchin_source   (value) VALUES (NEW.utm_source);
    INSERT OR IGNORE INTO urchin_medium   (value) VALUES (NEW.utm_medium);
    INSERT OR IGNORE INTO urchin_campaign (value) VALUES (NEW.utm_campaign);
    INSERT OR IGNORE INTO urchin_term     (value) VALUES (NEW.utm_term);
    INSERT OR IGNORE INTO urchin_content  (value) VALUES (NEW.utm_content);
    INSERT OR REPLACE INTO urchin SELECT
        NEW.id,
        r.id  AS request_id,
        us.id AS source_id,
        um.id AS medium_id,
        uc.id AS campaign_id,
        ut.id AS term_id,
        uo.id AS content_id
    FROM requests AS r
    JOIN      urchin_source   AS us ON us.value = NEW.utm_source
    LEFT JOIN urchin_medium   AS um ON um.value = NEW.utm_medium
    LEFT JOIN urchin_campaign AS uc ON uc.value = NEW.utm_campaign
    LEFT JOIN urchin_term     AS ut ON ut.value = NEW.utm_term
    LEFT JOIN urchin_content  AS uo ON uo.value = NEW.utm_content
    WHERE r.uuid = NEW.request_uuid;
END;

CREATE VIEW IF NOT EXISTS all_requests AS
    SELECT
        q.id,
        q.uuid,
        q.date,
        h.ip_address,
        u.user,
        r.method,
        r.route,
        f.referer,
        ua.ua,
        c.code
    FROM
        requests AS q
    JOIN
        seen_hosts AS h ON q.host_id = h.id
    JOIN
        seen_users AS u ON q.user_id = u.id
    JOIN
        seen_routes AS r ON q.route_id = r.id
    JOIN
        referer AS f ON q.referer_id = f.id
    JOIN
        ua ON q.ua_id = ua.id
    JOIN
        response_code AS c on q.response_code_id = c.id;

/* Make all_requests a writable view via triggers.  We will always stomp the main row, as the last update will be what we want. */
CREATE TRIGGER IF NOT EXISTS insert_all_requests INSTEAD OF INSERT ON all_requests BEGIN
    INSERT OR IGNORE INTO response_code (code)         VALUES (NEW.code);
    INSERT OR IGNORE INTO seen_routes   (route,method) VALUES (NEW.route, NEW.method);
    INSERT OR IGNORE INTO seen_users    (user)         VALUES (NEW.user);
    INSERT OR IGNORE INTO seen_hosts    (ip_address)   VALUES (NEW.ip_address);
    INSERT OR IGNORE INTO referer       (referer)      VALUES (NEW.referer);
    INSERT OR IGNORE INTO ua            (ua)           VALUES (NEW.ua);
    INSERT OR REPLACE INTO requests SELECT
        NEW.id,
        NEW.uuid,
        NEW.date,
        h.id AS host_id,
        u.id AS user_id,
        r.id AS route_id,
        f.id AS referer_id,
        ua.id AS ua_id,
        c.id AS response_code_id
    FROM seen_hosts AS h
    JOIN seen_users AS u ON u.user = NEW.user
    JOIN seen_routes AS r ON r.route = NEW.route AND r.method = NEW.method
    JOIN referer AS f ON f.referer = NEW.referer
    JOIN ua ON ua.ua = NEW.ua
    JOIN response_code AS c ON c.code = NEW.code
    WHERE h.ip_address = NEW.ip_address;
END;

/* This is just to store various messages associated with requests, which are usually errors. */
CREATE TABLE IF NOT EXISTS messages (
    uuid TEXT NOT NULL REFERENCES requests(uuid) ON DELETE NO ACTION,
    message TEXT NOT NULL
);