From 0c2eeaf954842fb00b3371eb6c1d438e1d9609ea Mon Sep 17 00:00:00 2001
From: sam <sam@sleepycat.moe>
Date: Wed, 16 Aug 2023 03:30:34 +0200
Subject: [PATCH] chore: add down migrations

---
 scripts/migrate/001_init.sql                  | 17 +++++++++--
 .../migrate/002_add_member_display_name.sql   |  7 ++++-
 scripts/migrate/003_add_tokens.sql            |  9 +++++-
 scripts/migrate/004_field_arrays.sql          | 30 +++++++++++++++++--
 scripts/migrate/005_delete_users.sql          | 10 +++++--
 scripts/migrate/006_jsonb_arrays.sql          | 26 ++++++++++++++--
 scripts/migrate/007_hashed_avatars.sql        | 12 ++++++--
 scripts/migrate/008_data_exports.sql          |  8 +++--
 scripts/migrate/009_fediverse_oauth.sql       | 12 ++++++--
 scripts/migrate/010_reports.sql               | 10 +++++--
 scripts/migrate/011_token_info.sql            |  9 ++++--
 scripts/migrate/012_custom_options.sql        | 11 +++++--
 scripts/migrate/013_tumblr_oauth.sql          |  9 ++++--
 scripts/migrate/014_google_oauth.sql          |  9 ++++--
 scripts/migrate/015_custom_preferences.sql    |  8 +++--
 scripts/migrate/016_user_activity.sql         |  8 +++--
 scripts/migrate/017_pride_flags.sql           | 10 +++++--
 scripts/migrate/018_short_ids.sql             | 14 +++++++--
 scripts/migrate/019_timezones.sql             |  8 +++--
 19 files changed, 191 insertions(+), 36 deletions(-)

diff --git a/scripts/migrate/001_init.sql b/scripts/migrate/001_init.sql
index 2e83fb1..6708441 100644
--- a/scripts/migrate/001_init.sql
+++ b/scripts/migrate/001_init.sql
@@ -1,7 +1,7 @@
--- +migrate Up
-
 -- 2022-05-02: initial schema
 
+-- +migrate Up
+
 create table users (
     id           text primary key,
     username     text not null unique,
@@ -89,3 +89,16 @@ create table invites (
     created timestamp not null default (current_timestamp at time zone 'utc'),
     used    boolean not null default false
 );
+
+-- +migrate Down
+
+drop table invites;
+drop table member_fields;
+drop table member_pronouns;
+drop table member_names;
+drop index members_user_name_idx;
+drop table members;
+drop table user_fields;
+drop table user_pronouns;
+drop table user_names;
+drop table users;
diff --git a/scripts/migrate/002_add_member_display_name.sql b/scripts/migrate/002_add_member_display_name.sql
index 6bce517..64ea9b7 100644
--- a/scripts/migrate/002_add_member_display_name.sql
+++ b/scripts/migrate/002_add_member_display_name.sql
@@ -1,4 +1,9 @@
+-- 2022-11-20: add display name to members
+
 -- +migrate Up
 
--- 2022-11-20: add display name to members
 alter table members add column display_name text;
+
+-- +migrate Down
+
+alter table members drop column display_name;
diff --git a/scripts/migrate/003_add_tokens.sql b/scripts/migrate/003_add_tokens.sql
index a6d81ef..8d19ac2 100644
--- a/scripts/migrate/003_add_tokens.sql
+++ b/scripts/migrate/003_add_tokens.sql
@@ -1,6 +1,7 @@
+-- 2022-12-23: Add database-backed tokens
+
 -- +migrate Up
 
--- 2022-12-23: Add database-backed tokens
 create table tokens (
     user_id     text not null references users (id) on delete cascade,
     token_id    text primary key,
@@ -13,3 +14,9 @@ create table tokens (
 -- This does not change anything code-wise, but it's recommended over plain timestamp because plain timestamp does not handle timezones correctly
 alter table invites alter column created type timestamptz;
 alter table invites alter column created set default now();
+
+-- +migrate Down
+
+drop table tokens;
+alter table invites alter column created type timestamp;
+alter table invites alter column created set default (current_timestamp at time zone 'utc');
diff --git a/scripts/migrate/004_field_arrays.sql b/scripts/migrate/004_field_arrays.sql
index 0606cb4..ce5821e 100644
--- a/scripts/migrate/004_field_arrays.sql
+++ b/scripts/migrate/004_field_arrays.sql
@@ -1,7 +1,7 @@
--- +migrate Up
-
 -- 2023-01-03: change names, pronouns, and fields to be columns instead of separate tables
 
+-- +migrate Up
+
 create type field_entry as (
     value  text,
     status int
@@ -33,3 +33,29 @@ alter table member_fields drop column okay;
 alter table member_fields drop column jokingly;
 alter table member_fields drop column friends_only;
 alter table member_fields drop column avoid;
+
+-- +migrate Down
+
+alter table user_fields add column favourite text[];
+alter table user_fields add column okay text[];
+alter table user_fields add column jokingly text[];
+alter table user_fields add column friends_only text[];
+alter table user_fields add column avoid text[];
+
+alter table member_fields add column favourite text[];
+alter table member_fields add column okay text[];
+alter table member_fields add column jokingly text[];
+alter table member_fields add column friends_only text[];
+alter table member_fields add column avoid text[];
+
+alter table users drop column names;
+alter table users drop column pronouns;
+
+alter table members drop column names;
+alter table members drop column pronouns;
+
+alter table user_fields drop column entries;
+alter table member_fields drop column entries;
+
+drop type field_entry;
+drop type pronoun_entry;
diff --git a/scripts/migrate/005_delete_users.sql b/scripts/migrate/005_delete_users.sql
index 3bb2ac1..f6a0c45 100644
--- a/scripts/migrate/005_delete_users.sql
+++ b/scripts/migrate/005_delete_users.sql
@@ -1,10 +1,16 @@
--- +migrate Up
-
 -- 2023-03-07: add delete functionality
 
+-- +migrate Up
+
 -- if not null, the user is soft deleted
 alter table users add column deleted_at timestamptz;
 -- if true, the user deleted their account themselves + should have option to reactivate; should also be deleted after 30 days
 alter table users add column self_delete boolean;
 -- delete reason if the user was deleted by a moderator
 alter table users add column delete_reason text;
+
+-- +migrate Down
+
+alter table users drop column deleted_at;
+alter table users drop column self_delete;
+alter table users drop column delete_reason;
diff --git a/scripts/migrate/006_jsonb_arrays.sql b/scripts/migrate/006_jsonb_arrays.sql
index c9ad3d1..9f72465 100644
--- a/scripts/migrate/006_jsonb_arrays.sql
+++ b/scripts/migrate/006_jsonb_arrays.sql
@@ -1,8 +1,8 @@
--- +migrate Up
-
 -- 2023-03-11: Change composite type arrays to use jsonb columns
 -- Composite types aren't actually supported by pgx and this allows us to drop pggen as a dev dependency.
 
+-- +migrate Up
+
 -- Delete old columns
 alter table users drop column names;
 alter table users drop column pronouns;
@@ -22,3 +22,25 @@ alter table members add column pronouns jsonb not null default '[]';
 
 alter table user_fields add column entries jsonb not null default '[]';
 alter table member_fields add column entries jsonb not null default '[]';
+
+-- +migrate Down
+
+-- Delete old columns
+alter table users drop column names;
+alter table users drop column pronouns;
+
+alter table members drop column names;
+alter table members drop column pronouns;
+
+alter table user_fields drop column entries;
+alter table member_fields drop column entries;
+
+-- Create new columns
+alter table users add column names field_entry;
+alter table users add column pronouns pronoun_entry;
+
+alter table members add column names field_entry;
+alter table members add column pronouns pronoun_entry;
+
+alter table user_fields add column entries field_entry;
+alter table member_fields add column entries field_entry;
diff --git a/scripts/migrate/007_hashed_avatars.sql b/scripts/migrate/007_hashed_avatars.sql
index 547e433..4ad24b2 100644
--- a/scripts/migrate/007_hashed_avatars.sql
+++ b/scripts/migrate/007_hashed_avatars.sql
@@ -1,9 +1,17 @@
--- +migrate Up
-
 -- 2023-03-13: Change avatar URLs to hashes
 
+-- +migrate Up
+
 alter table users drop column avatar_urls;
 alter table members drop column avatar_urls;
 
 alter table users add column avatar text;
 alter table members add column avatar text;
+
+-- +migrate Down
+
+alter table users drop column avatar;
+alter table members drop column avatar;
+
+alter table users add column avatar_urls text[];
+alter table members add column avatar_urls text[];
diff --git a/scripts/migrate/008_data_exports.sql b/scripts/migrate/008_data_exports.sql
index 937a56c..f4fbbf7 100644
--- a/scripts/migrate/008_data_exports.sql
+++ b/scripts/migrate/008_data_exports.sql
@@ -1,10 +1,14 @@
--- +migrate Up
-
 -- 2023-03-15: Add data export
 
+-- +migrate Up
+
 create table data_exports (
     id         serial primary key,
     user_id    text not null references users (id) on delete cascade,
     filename   text not null,
     created_at timestamptz not null default now()
 );
+
+-- +migrate Down
+
+drop table data_exports;
diff --git a/scripts/migrate/009_fediverse_oauth.sql b/scripts/migrate/009_fediverse_oauth.sql
index f1265cc..27ef875 100644
--- a/scripts/migrate/009_fediverse_oauth.sql
+++ b/scripts/migrate/009_fediverse_oauth.sql
@@ -1,7 +1,7 @@
--- +migrate Up
-
 -- 2023-03-16: Add fediverse (Mastodon/Pleroma/Misskey) OAuth
 
+-- +migrate Up
+
 create table fediverse_apps (
     id            serial primary key,
     instance      text not null unique,
@@ -13,3 +13,11 @@ create table fediverse_apps (
 alter table users add column fediverse text null;
 alter table users add column fediverse_username text null;
 alter table users add column fediverse_app_id integer null references fediverse_apps (id) on delete set null;
+
+-- +migrate Down
+
+alter table users drop column fediverse;
+alter table users drop column fediverse_username;
+alter table users drop column fediverse_app_id;
+
+drop table fediverse_apps;
diff --git a/scripts/migrate/010_reports.sql b/scripts/migrate/010_reports.sql
index 888f601..4cabb14 100644
--- a/scripts/migrate/010_reports.sql
+++ b/scripts/migrate/010_reports.sql
@@ -1,7 +1,7 @@
--- +migrate Up
-
 -- 2023-03-19: Add moderation-related tables
 
+-- +migrate Up
+
 alter table users add column is_admin boolean not null default false;
 
 create table reports (
@@ -25,3 +25,9 @@ create table warnings (
     created_at timestamptz not null default now(),
     read_at    timestamptz
 );
+
+-- +migrate Down
+
+drop table warnings;
+drop table reports;
+alter table users drop column is_admin;
diff --git a/scripts/migrate/011_token_info.sql b/scripts/migrate/011_token_info.sql
index c9958ac..019b2f4 100644
--- a/scripts/migrate/011_token_info.sql
+++ b/scripts/migrate/011_token_info.sql
@@ -1,6 +1,11 @@
--- +migrate Up
-
 -- 2023-03-30: Add token information to database
 
+-- +migrate Up
+
 alter table tokens add column api_only boolean not null default false;
 alter table tokens add column read_only boolean not null default false;
+
+-- +migrate Down
+
+alter table tokens drop column api_only;
+alter table tokens drop column read_only;
diff --git a/scripts/migrate/012_custom_options.sql b/scripts/migrate/012_custom_options.sql
index 31c2212..501940f 100644
--- a/scripts/migrate/012_custom_options.sql
+++ b/scripts/migrate/012_custom_options.sql
@@ -1,8 +1,15 @@
--- +migrate Up
-
 -- 2023-04-01: Add a couple customization options to users and members
 
+-- +migrate Up
+
 alter table users add column member_title text;
 alter table users add column list_private boolean not null default false;
 
 alter table members add column unlisted boolean not null default false;
+
+-- +migrate Down
+
+alter table users drop column member_title;
+alter table users drop column list_private;
+
+alter table members drop column unlisted;
diff --git a/scripts/migrate/013_tumblr_oauth.sql b/scripts/migrate/013_tumblr_oauth.sql
index 0a04c62..3ce37c7 100644
--- a/scripts/migrate/013_tumblr_oauth.sql
+++ b/scripts/migrate/013_tumblr_oauth.sql
@@ -1,6 +1,11 @@
--- +migrate Up
-
 -- 2023-04-18: Add tumblr oauth
 
+-- +migrate Up
+
 alter table users add column tumblr text null;
 alter table users add column tumblr_username text null;
+
+-- +migrate Down
+
+alter table users drop column tumblr;
+alter table users drop column tumblr_username;
diff --git a/scripts/migrate/014_google_oauth.sql b/scripts/migrate/014_google_oauth.sql
index 2fdb0fb..5ce1043 100644
--- a/scripts/migrate/014_google_oauth.sql
+++ b/scripts/migrate/014_google_oauth.sql
@@ -1,6 +1,11 @@
--- +migrate Up
-
 -- 2023-04-18: Add Google oauth
 
+-- +migrate Up
+
 alter table users add column google text null;
 alter table users add column google_username text null;
+
+-- +migrate Down
+
+alter table users drop column google;
+alter table users drop column google_username;
diff --git a/scripts/migrate/015_custom_preferences.sql b/scripts/migrate/015_custom_preferences.sql
index 90f112b..d05803c 100644
--- a/scripts/migrate/015_custom_preferences.sql
+++ b/scripts/migrate/015_custom_preferences.sql
@@ -1,5 +1,9 @@
--- +migrate Up
-
 -- 2023-04-19: Add custom preferences
 
+-- +migrate Up
+
 alter table users add column custom_preferences jsonb not null default '{}';
+
+-- +migrate Down
+
+alter table users drop column custom_preferences;
diff --git a/scripts/migrate/016_user_activity.sql b/scripts/migrate/016_user_activity.sql
index e306e93..9400643 100644
--- a/scripts/migrate/016_user_activity.sql
+++ b/scripts/migrate/016_user_activity.sql
@@ -1,7 +1,11 @@
--- +migrate Up
-
 -- 2023-05-02: Add a last_active column to users, updated whenever the user modifies their profile or members.
 -- This is not directly exposed in the API.
 -- Potential future use cases: showing total number of active users, pruning completely empty users if they don't log in?
 
+-- +migrate Up
+
 alter table users add column last_active timestamptz not null default now();
+
+-- +migrate Down
+
+alter table users drop column last_active;
diff --git a/scripts/migrate/017_pride_flags.sql b/scripts/migrate/017_pride_flags.sql
index 9c9b622..11add61 100644
--- a/scripts/migrate/017_pride_flags.sql
+++ b/scripts/migrate/017_pride_flags.sql
@@ -1,8 +1,8 @@
--- +migrate Up
-
 -- 2023-05-09: Add pride flags
 -- Hashes are a separate table so we can deduplicate flags.
 
+-- +migrate Up
+
 create table pride_flags (
     id          text primary key,
     user_id     text not null references users (id) on delete cascade,
@@ -22,3 +22,9 @@ create table member_flags (
     member_id   text not null references members (id) on delete cascade,
     flag_id     text not null references pride_flags (id) on delete cascade
 );
+
+-- +migrate Down
+
+drop table member_flags;
+drop table user_flags;
+drop table pride_flags;
diff --git a/scripts/migrate/018_short_ids.sql b/scripts/migrate/018_short_ids.sql
index 09b9af6..d591c13 100644
--- a/scripts/migrate/018_short_ids.sql
+++ b/scripts/migrate/018_short_ids.sql
@@ -1,7 +1,7 @@
--- +migrate Up
-
 -- 2023-06-03: Add short IDs for the prns.cc domain.
 
+-- +migrate Up
+
 -- add the columns
 alter table users add column sid text unique check(length(sid)=5);
 alter table members add column sid text unique check(length(sid)=6);
@@ -48,3 +48,13 @@ update members set sid = find_free_member_sid();
 -- finally, make the values non-nullable
 alter table users alter column sid set not null;
 alter table members alter column sid set not null;
+
+-- +migrate Down
+
+drop function find_free_member_sid;
+drop function find_free_user_sid;
+drop function generate_sid;
+
+alter table users drop column sid;
+alter table users drop column last_sid_reroll;
+alter table members drop column sid;
diff --git a/scripts/migrate/019_timezones.sql b/scripts/migrate/019_timezones.sql
index f45c69c..369300f 100644
--- a/scripts/migrate/019_timezones.sql
+++ b/scripts/migrate/019_timezones.sql
@@ -1,5 +1,9 @@
--- +migrate Up
-
 -- 2023-07-30: Add user timezones
 
+-- +migrate Up
+
 alter table users add column timezone text null;
+
+-- +migrate Down
+
+alter table users drop column timezone;