Add db migrations

SHARP/database/init.sql

@@ -196,4 +196,19 @@ CREATE TABLE IF NOT EXISTS used_hashcash_tokens (
    token TEXT PRIMARY KEY,
    expires_at TIMESTAMPTZ NOT NULL
 );
-CREATE INDEX IF NOT EXISTS idx_used_hashcash_tokens_expires_at ON used_hashcash_tokens(expires_at);
+CREATE INDEX IF NOT EXISTS idx_used_hashcash_tokens_expires_at ON used_hashcash_tokens(expires_at);
+
+DROP TYPE IF EXISTS migration_status;
+
+CREATE TYPE migration_status AS ENUM (
+    'scheduled', -- Initial state
+    'running', -- Migration in progress
+    'failed', -- Migration failed
+    'migrated' -- Successfully migrated
+);
+
+CREATE TABLE IF NOT EXISTS migrations (
+   id TEXT PRIMARY KEY,
+   status migration_status DEFAULT 'scheduled',
+   modfied_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);

SHARP/database/migrations/00_migration_table.sql

@@ -0,0 +1,14 @@
+DROP TYPE IF EXISTS migration_status;
+
+CREATE TYPE migration_status AS ENUM (
+    'scheduled', -- Initial state
+    'running', -- Migration in progress
+    'failed', -- Migration failed
+    'migrated' -- Successfully migrated
+);
+
+CREATE TABLE IF NOT EXISTS migrations (
+   id TEXT PRIMARY KEY,
+   status migration_status DEFAULT 'scheduled',
+   modfied_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);

SHARP/database/migrations/README.md

@@ -0,0 +1,5 @@
+# Database Migrations
+
+Add here the databayse migration, you want to run, also adjust the `../init.sql` file to include those chnages.
+
+After that, also add them to the `MIGRATIONS` array, so that they are applied automatically.