first iteration of migration script

Author: AbstractUmbra

migration.sql

@@ -0,0 +1,22 @@
+BEGIN; -- start transaction
+
+SAVEPOINT pastes;
+ALTER TABLE pastes DROP COLUMN IF EXISTS author_id CASCADE;  -- no longer storing users
+ALTER TABLE pastes DROP COLUMN IF EXISTS last_edited CASCADE; -- no longer allowing edits
+ALTER TABLE pastes ALTER COLUMN password SET DEFAULT NULL; -- nullable password by default
+ALTER TABLE pastes DROP COLUMN IF EXISTS origin_ip CASCADE; -- no longer needed
+ALTER TABLE pastes ADD COLUMN IF NOT EXISTS safety TEXT UNIQUE;  -- this is how we handle paste deletion.
+CREATE UNIQUE INDEX IF NOT EXISTS pastes_safety_idx ON pastes (safety); -- -- Index by safety keys for faster lookup to delete.
+
+SAVEPOINT files;
+ALTER TABLE files ALTER COLUMN filename SET NOT NULL;  -- always require filename
+ALTER TABLE files DROP COLUMN IF EXISTS attachment;  -- we don't have these anymore
+ALTER TABLE files ADD COLUMN IF NOT EXISTS annotation TEXT;
+
+SAVEPOINT drops;
+DROP TABLE IF EXISTS bans CASCADE; -- no longer needed
+DROP TABLE IF EXISTS logs CASCADE; -- no longer needed
+DROP TABLE IF EXISTS bookmarks CASCADE;  -- no longer needed
+DROP TABLE IF EXISTS users CASCADE;  -- no longer needed
+
+COMMIT;