feat: user, audit, hashed_text, email

schema/000_email.sql

@@ -0,0 +1 @@
+create type public.email as (email text);

schema/000_hashed_text.sql

@@ -0,0 +1 @@
+create type hashed_text as (hashed text);

schema/000_thread_kind.sql

@@ -1,5 +0,0 @@
-create type public.thread_kind as enum
-  ( 'post'
-  , 'short'
-  , 'message'
-  );

schema/010_audit.sql

@@ -0,0 +1,10 @@
+create type public.audit_kind as enum
+  ( 'modify'
+  , 'delete'
+  , 'create'
+  );
+
+create table public.audit
+  ( id   int               not null primary key generated always as identity
+  , kind public.audit_kind not null
+  );

schema/010_thread.sql

@@ -1,5 +1,11 @@
-create table public.thread
+create type public.thread_kind as enum
-  ( id int not null generated always as identity
+  ( 'post'
-  , uid uuid not null default gen_random_uuid()
+  , 'short'
-  , kind thread_kind not null
+  , 'message'
+  );
+
+create table public.thread
+  ( id     int                not null primary key generated always as identity
+  , uid    uuid               not null default gen_random_uuid()
+  , kind   public.thread_kind not null
   );

schema/010_user.sql

@@ -0,0 +1,103 @@
+create type public.usr_username as (username text);
+
+create table public.usr_audit
+  ( usr           int                 not null
+  , kind          public.audit_kind   not null
+  , actor         int                 not null
+  , prev_username public.usr_username null
+  , prev_password public.hashed_text  null
+  , prev_email    public.email        null
+  );
+
+create table public.usr
+  ( id       int                 not null primary key generated always as identity
+  , uid      uuid                not null default gen_random_uuid()
+  , deleted  boolean             not null default false
+  , username public.usr_username not null unique
+  , password public.hashed_text  not null
+  , email    public.email        not null unique
+  );
+
+alter table public.usr_audit
+  add constraint fk_usr_audit_usr
+  foreign key (usr)
+  references public.usr (id)
+, add constraint fk_usr_audit_actor
+  foreign key (actor)
+  references public.usr (id)
+;
+
+create function public.do_usr_audit()
+  returns trigger
+  language plpgsql as $$
+  declare
+    audit_kind public.audit_kind;
+    usr_id int;
+    prev_username public.usr_username := null;
+    prev_password public.hashed_text   := null;
+    prev_email    public.email         := null;
+  begin
+    if (TG_OP = 'UPDATE') then
+      usr_id := OLD.id;
+      audit_kind := 'modify';
+      prev_username := OLD.username;
+      prev_password := OLD.password;
+      prev_email := OLD.email;
+    elsif (TG_OP = 'INSERT') then
+      usr_id := NEW.id;
+      audit_kind := 'create';
+    end if;
+
+    insert into public.usr_audit
+      ( kind
+      , usr
+      , actor
+      , prev_username
+      , prev_email
+      , prev_password
+      )
+    values
+      ( audit_kind
+      , usr_id
+      , usr_id -- TODO
+      , prev_username
+      , prev_email
+      , prev_password
+      );
+
+    return NEW;
+  end;
+$$;
+
+create function public.do_usr_soft_delete()
+  returns trigger
+  language plpgsql as $$
+  declare
+    audit_id int;
+  begin
+    insert into public.usr_audit
+      ( kind
+      , usr
+      , actor
+      )
+    values
+      ( 'delete' :: public.audit_kind
+      , OLD.id
+      , OLD.id -- TODO
+      );
+
+    update public.usr
+    set deleted = true
+    where id = OLD.id;
+
+    return null;
+  end;
+$$;
+
+create trigger trigger_usr_audit
+  after insert or update on public.usr
+  for each row execute function public.do_usr_audit();
+
+create trigger trigger_usr_soft_delete
+  before delete on public.usr
+  for each row execute function public.do_usr_soft_delete();

scripts/migrate.sh

@@ -0,0 +1,3 @@
+#! /usr/bin/bash
+
+