-- SQL to create the initial tables for the MediaWiki database.
-- This is read and executed by the install script; you should
-- not have to run it by itself unless doing a manual install.
-- This is the PostgreSQL version.
-- For information about each table, please see the notes in ../tables.sql
-- Please make sure all dollar-quoting uses $mw$ at the start of the line
-- We can't use SERIAL everywhere: the sequence names are hard-coded into the PHP
-- TODO: Change CHAR to BOOL, TEXT to CIDR, allow custom schema

SET client_min_messages = 'ERROR';

CREATE SEQUENCE user_user_id_seq MINVALUE 0 START WITH 0;
CREATE TABLE "user" (
  user_id                   INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('user_user_id_seq'),
  user_name                 TEXT NOT NULL UNIQUE,
  user_real_name            TEXT,
  user_password             TEXT,
  user_newpassword          TEXT,
  user_token                CHAR(32),
  user_email                TEXT,
  user_email_token          CHAR(32),
  user_email_token_expires  TIMESTAMPTZ,
  user_email_authenticated  TIMESTAMPTZ,
  user_options              TEXT,
  user_touched              TIMESTAMPTZ,
  user_registration         TIMESTAMPTZ
);
CREATE INDEX user_email_token_idx ON "user"(user_email_token);

CREATE TABLE user_groups (
  ug_user   INTEGER NULL REFERENCES "user"(user_id) ON DELETE CASCADE,
  ug_group  TEXT NOT NULL
);
CREATE UNIQUE INDEX user_groups_unique ON user_groups(ug_group, ug_user);

CREATE TABLE user_newtalk (
  user_id  INTEGER NOT NULL REFERENCES "user"(user_id) ON DELETE CASCADE,
  user_ip  TEXT NULL -- change to CIDR later
);
CREATE INDEX user_newtalk_id_idx ON user_newtalk(user_id);
CREATE INDEX user_newtalk_ip_idx ON user_newtalk(user_ip);

CREATE SEQUENCE page_page_id_seq;
CREATE TABLE page (
  page_id            INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('page_page_id_seq'),
  page_namespace     SMALLINT NOT NULL,
  page_title         TEXT NOT NULL,
  page_restrictions  TEXT,
  page_counter       BIGINT NOT NULL DEFAULT 0,
  page_is_redirect   CHAR NOT NULL DEFAULT 0,
  page_is_new        CHAR NOT NULL DEFAULT 0,
  page_random        NUMERIC(15,14) NOT NULL,
  page_touched       TIMESTAMPTZ,
  page_latest        INTEGER NOT NULL, -- FK?
  page_len           INTEGER NOT NULL
);
CREATE UNIQUE INDEX page_unique_name ON page(page_namespace, page_title);
CREATE INDEX page_random_idx ON page(page_random);
CREATE INDEX page_len_idx ON page(page_len);

-- Create a dummy page to satisfy fk contraints where a page_id of "0" is added
INSERT INTO page (page_id,page_namespace,page_title,page_random,page_latest,page_len)
VALUES (0,0,'',0.0,0,0);


CREATE SEQUENCE rev_rev_id_val;
CREATE TABLE revision (
  rev_id          INTEGER NOT NULL UNIQUE DEFAULT nextval('rev_rev_id_val'),
  rev_page        INTEGER NULL REFERENCES page (page_id) ON DELETE SET NULL,
  rev_text_id     INTEGER NULL, -- FK
  rev_comment     TEXT,
  rev_user        INTEGER NOT NULL REFERENCES "user"(user_id),
  rev_user_text   TEXT NOT NULL,
  rev_timestamp   TIMESTAMPTZ NOT NULL,
  rev_minor_edit  CHAR NOT NULL DEFAULT '0',
  rev_deleted     CHAR NOT NULL DEFAULT '0'
);
CREATE UNIQUE INDEX revision_unique ON revision(rev_page, rev_id);
CREATE INDEX rev_timestamp_idx ON revision(rev_timestamp);
CREATE INDEX rev_user_idx ON revision(rev_user);
CREATE INDEX rev_user_text_idx ON revision(rev_user_text);


CREATE SEQUENCE text_old_id_val;
CREATE TABLE "text" (
  old_id     INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('text_old_id_val'),
  old_text   TEXT,
  old_flags  TEXT
);


CREATE TABLE archive (
  ar_namespace   SMALLINT NOT NULL,
  ar_title       TEXT NOT NULL,
  ar_text        TEXT,
  ar_comment     TEXT,
  ar_user        INTEGER REFERENCES "user"(user_id) ON DELETE SET NULL,
  ar_user_text   TEXT NOT NULL,
  ar_timestamp   TIMESTAMPTZ NOT NULL,
  ar_minor_edit  CHAR NOT NULL DEFAULT '0',
  ar_flags       TEXT,
  ar_rev_id      INTEGER,
  ar_text_id     INTEGER
);
CREATE INDEX archive_name_title_timestamp ON archive(ar_namespace,ar_title,ar_timestamp);


CREATE TABLE pagelinks (
  pl_from       INTEGER NOT NULL REFERENCES page(page_id) ON DELETE CASCADE,
  pl_namespace  SMALLINT NOT NULL,
  pl_title      TEXT NOT NULL
);
CREATE UNIQUE INDEX pagelink_unique ON pagelinks(pl_namespace,pl_title,pl_from);


CREATE TABLE templatelinks (
  tl_from       INTEGER NOT NULL REFERENCES page(page_id) ON DELETE CASCADE,
  tl_namespace  TEXT NOT NULL,
  tl_title      TEXT NOT NULL
);
CREATE UNIQUE INDEX templatelinks_unique ON templatelinks(tl_namespace,tl_title,tl_from);


CREATE TABLE imagelinks (
  il_from  INTEGER NOT NULL REFERENCES page(page_id) ON DELETE CASCADE,
  il_to    TEXT NOT NULL
);
CREATE UNIQUE INDEX il_from ON imagelinks(il_to,il_from);


CREATE TABLE categorylinks (
  cl_from       INTEGER NOT NULL REFERENCES page(page_id) ON DELETE CASCADE,
  cl_to         TEXT NOT NULL,
  cl_sortkey    TEXT,
  cl_timestamp  TIMESTAMPTZ NOT NULL
);
CREATE UNIQUE INDEX cl_from ON categorylinks(cl_from, cl_to);
CREATE INDEX cl_sortkey ON categorylinks(cl_to, cl_sortkey);


CREATE TABLE externallinks (
  el_from   INTEGER NOT NULL REFERENCES page(page_id) ON DELETE CASCADE,
  el_to     TEXT NOT NULL,
  el_index  TEXT NOT NULL
);
CREATE INDEX externallinks_from_to ON externallinks(el_from,el_to);
CREATE INDEX externallinks_index ON externallinks(el_index);


CREATE TABLE langlinks (
  ll_from    INTEGER NOT NULL REFERENCES page (page_id) ON DELETE CASCADE,
  ll_lang    TEXT,
  ll_title   TEXT
);
CREATE UNIQUE INDEX langlinks_unique ON langlinks (ll_from,ll_lang);
CREATE INDEX langlinks_lang_title ON langlinks(ll_lang,ll_title);


CREATE TABLE site_stats (
  ss_row_id         INTEGER NOT NULL UNIQUE,
  ss_total_views    INTEGER DEFAULT 0,
  ss_total_edits    INTEGER DEFAULT 0,
  ss_good_articles  INTEGER DEFAULT 0,
  ss_total_pages    INTEGER DEFAULT -1,
  ss_users          INTEGER DEFAULT -1,
  ss_admins         INTEGER DEFAULT -1,
  ss_images         INTEGER DEFAULT 0
);


CREATE TABLE hitcounter (
  hc_id  BIGINT NOT NULL
);

CREATE SEQUENCE ipblocks_ipb_id_val;
CREATE TABLE ipblocks (
  ipb_id           INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('ipblocks_ipb_id_val'),
  ipb_address      TEXT NULL, -- change to CIDR later
  ipb_user         INTEGER NULL REFERENCES "user"(user_id) ON DELETE SET NULL,
  ipb_by           INTEGER NOT NULL REFERENCES "user"(user_id) ON DELETE CASCADE,
  ipb_reason       TEXT NOT NULL,
  ipb_timestamp    TIMESTAMPTZ NOT NULL,
  ipb_auto         CHAR NOT NULL DEFAULT '0',
  ipb_expiry       TIMESTAMPTZ NOT NULL,
  ipb_range_start  TEXT, -- change to CIDR later
  ipb_range_end    TEXT  -- change to CIDR later
);
CREATE INDEX ipb_address ON ipblocks(ipb_address);
CREATE INDEX ipb_user ON ipblocks(ipb_user);
CREATE INDEX ipb_range ON ipblocks(ipb_range_start,ipb_range_end);


CREATE TABLE image (
  img_name         TEXT NOT NULL PRIMARY KEY,
  img_size         SMALLINT NOT NULL,
  img_width        SMALLINT NOT NULL,
  img_height       SMALLINT NOT NULL,
  img_metadata     TEXT,
  img_bits         SMALLINT,
  img_media_type   TEXT,
  img_major_mime   TEXT DEFAULT 'unknown',
  img_minor_mime   TEXT DEFAULT 'unknown',
  img_description  TEXT NOT NULL,
  img_user         INTEGER NULL REFERENCES "user"(user_id) ON DELETE SET NULL,
  img_user_text    TEXT NOT NULL,
  img_timestamp    TIMESTAMPTZ
);
CREATE INDEX img_size_idx ON image(img_size);
CREATE INDEX img_timestamp_idx ON image(img_timestamp);


CREATE TABLE oldimage (
  oi_name          TEXT NOT NULL REFERENCES image(img_name),
  oi_archive_name  TEXT NOT NULL,
  oi_size          SMALLINT NOT NULL,
  oi_width         SMALLINT NOT NULL,
  oi_height        SMALLINT NOT NULL,
  oi_bits          SMALLINT NOT NULL,
  oi_description   TEXT,
  oi_user          INTEGER NULL REFERENCES "user"(user_id) ON DELETE SET NULL,
  oi_user_text     TEXT NOT NULL,
  oi_timestamp     TIMESTAMPTZ NOT NULL
);
CREATE INDEX oi_name ON oldimage (oi_name);


CREATE TABLE filearchive (
  fa_id                 SERIAL      NOT NULL PRIMARY KEY,
  fa_name               TEXT        NOT NULL,
  fa_archive_name       TEXT,  
  fa_storage_group      VARCHAR(16),
  fa_storage_key        CHAR(64),
  fa_deleted_user       INTEGER         NULL REFERENCES "user"(user_id) ON DELETE SET NULL,
  fa_deleted_timestamp  TIMESTAMPTZ NOT NULL,
  fa_deleted_reason     TEXT,
  fa_size               SMALLINT    NOT NULL,
  fa_width              SMALLINT    NOT NULL,
  fa_height             SMALLINT    NOT NULL,
  fa_metadata           TEXT,
  fa_bits               SMALLINT,
  fa_media_type         TEXT,
  fa_major_mime         TEXT                   DEFAULT 'unknown',
  fa_minor_mime         TEXT                   DEFAULT 'unknown',
  fa_description        TEXT        NOT NULL,
  fa_user               INTEGER         NULL REFERENCES "user"(user_id) ON DELETE SET NULL,
  fa_user_text          TEXT        NOT NULL,
  fa_timestamp          TIMESTAMPTZ
);
CREATE INDEX fa_name_time ON filearchive(fa_name, fa_timestamp);
CREATE INDEX fa_dupe ON filearchive(fa_storage_group, fa_storage_key);
CREATE INDEX fa_notime ON filearchive(fa_deleted_timestamp);
CREATE INDEX fa_nouser ON filearchive(fa_deleted_user);


CREATE SEQUENCE rc_rc_id_seq;
CREATE TABLE recentchanges (
  rc_id              INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('rc_rc_id_seq'),
  rc_timestamp       TIMESTAMPTZ NOT NULL,
  rc_cur_time        TIMESTAMPTZ NOT NULL,
  rc_user            INTEGER NULL REFERENCES "user"(user_id) ON DELETE SET NULL,
  rc_user_text       TEXT NOT NULL,
  rc_namespace       SMALLINT NOT NULL,
  rc_title           TEXT NOT NULL,
  rc_comment         TEXT,
  rc_minor           CHAR NOT NULL DEFAULT '0',
  rc_bot             CHAR NOT NULL DEFAULT '0',
  rc_new             CHAR NOT NULL DEFAULT '0',
  rc_cur_id          INTEGER NOT NULL REFERENCES page(page_id),
  rc_this_oldid      INTEGER NOT NULL,
  rc_last_oldid      INTEGER NOT NULL,
  rc_type            CHAR NOT NULL DEFAULT '0',
  rc_moved_to_ns     SMALLINT,
  rc_moved_to_title  TEXT,
  rc_patrolled       CHAR NOT NULL DEFAULT '0',
  rc_ip              TEXT -- change to CIDR later
);
CREATE INDEX rc_timestamp ON recentchanges (rc_timestamp);
CREATE INDEX rc_namespace_title ON recentchanges(rc_namespace, rc_title);
CREATE INDEX rc_cur_id ON recentchanges(rc_cur_id);
CREATE INDEX new_name_timestamp ON recentchanges(rc_new, rc_namespace, rc_timestamp);
CREATE INDEX rc_ip ON recentchanges(rc_ip);


CREATE TABLE watchlist (
  wl_user                   INTEGER NOT NULL REFERENCES "user"(user_id) ON DELETE CASCADE,
  wl_namespace              SMALLINT NOT NULL DEFAULT 0,
  wl_title                  TEXT NOT NULL,
  wl_notificationtimestamp  TIMESTAMPTZ DEFAULT NULL
);
CREATE UNIQUE INDEX wl_user_namespace_title ON watchlist (wl_namespace, wl_title, wl_user);


CREATE TABLE math (
  math_inputhash              TEXT NOT NULL UNIQUE,
  math_outputhash             TEXT NOT NULL,
  math_html_conservativeness  SMALLINT NOT NULL,
  math_html                   TEXT,
  math_mathml                 TEXT
);


CREATE TABLE interwiki (
  iw_prefix  TEXT NOT NULL UNIQUE,
  iw_url     TEXT NOT NULL,
  iw_local   CHAR NOT NULL,
  iw_trans   CHAR NOT NULL DEFAULT '0'
);


CREATE TABLE querycache (
  qc_type       TEXT NOT NULL,
  qc_value      SMALLINT NOT NULL,
  qc_namespace  SMALLINT NOT NULL,
  qc_title      TEXT NOT NULL
);
CREATE INDEX querycache_type_value ON querycache(qc_type, qc_value);


CREATE TABLE objectcache (
  keyname  CHAR(255) UNIQUE,
  value    TEXT NOT NULL DEFAULT '',
  exptime  TIMESTAMPTZ NOT NULL
);
CREATE INDEX objectcacache_exptime ON objectcache(exptime);

CREATE TABLE transcache (
  tc_url       TEXT NOT NULL UNIQUE,
  tc_contents  TEXT NOT NULL,
  tc_time      TIMESTAMPTZ NOT NULL
);

CREATE TABLE logging (
  log_type        TEXT NOT NULL,
  log_action      TEXT NOT NULL,
  log_timestamp   TIMESTAMPTZ NOT NULL,
  log_user        INTEGER REFERENCES "user"(user_id) ON DELETE SET NULL,
  log_namespace   SMALLINT NOT NULL,
  log_title       TEXT NOT NULL,
  log_comment     TEXT,
  log_params      TEXT
);
CREATE INDEX logging_type_name ON logging(log_type, log_timestamp);
CREATE INDEX logging_user_time ON logging(log_timestamp, log_user);
CREATE INDEX logging_page_time ON logging(log_namespace, log_title, log_timestamp);

CREATE TABLE trackbacks (
  tb_id     SERIAL NOT NULL PRIMARY KEY,
  tb_page   INTEGER REFERENCES page(page_id) ON DELETE CASCADE,
  tb_title  TEXT NOT NULL,
  tb_url    TEXT NOT NULL,
  tb_ex     TEXT,
  tb_name   TEXT
);
CREATE INDEX trackback_page ON trackbacks(tb_page);

CREATE SEQUENCE job_job_id_seq;
CREATE TABLE job (
  job_id         INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('job_job_id_seq'),
  job_cmd        TEXT NOT NULL,
  job_namespace  SMALLINT NOT NULL,
  job_title      TEXT NOT NULL,
  job_params     TEXT NOT NULL
);
CREATE INDEX job_cmd_namespace_title ON job(job_cmd, job_namespace, job_title);

CREATE TABLE querycache_info (
  qci_type       TEXT UNIQUE,
  qci_timestamp  TIMESTAMPTZ NULL
);


CREATE OR REPLACE FUNCTION add_interwiki (TEXT,INT,CHAR) RETURNS INT LANGUAGE SQL AS
$mw$
  INSERT INTO interwiki (iw_prefix, iw_url, iw_local) VALUES ($1,$2,$3);
  SELECT 1;
$mw$;