create table if not exists stored_files (
  id         bigserial   primary key,
  guid       uuid        not null default gen_random_uuid(),
  thought_id uuid        references thoughts(guid) on delete set null,
  project_id uuid        references projects(guid) on delete set null,
  name       text        not null,
  media_type text        not null,
  kind       text        not null default 'file',
  encoding   text        not null default 'base64',
  size_bytes bigint      not null,
  sha256     text        not null,
  content    bytea       not null,
  created_at timestamptz not null default now(),
  updated_at timestamptz not null default now(),
  constraint stored_files_guid_unique unique (guid)
);

create index if not exists stored_files_thought_id_idx on stored_files (thought_id);
create index if not exists stored_files_project_id_idx on stored_files (project_id);
create index if not exists stored_files_sha256_idx on stored_files (sha256);