fix(tg-bot): safe SQL migration for tg_bot_validations.is_valid

Made-with: Cursor

Author: VoxHash

prisma/migrations/20260327_tg_bot_validations_is_valid_boolean_compat/migration.sql

@@ -0,0 +1,77 @@
+-- Safe migration: tg_bot_validations.is_valid (int/bool -> boolean)
+-- Goal:
+--   - Preserve all existing rows
+--   - Avoid reset/drop-data migration flow
+--   - Handle both legacy integer-like and boolean source column types
+--
+-- Notes:
+--   - Run on the target Supabase database in a maintenance window.
+--   - This migration does NOT delete rows; it copies/converts values first.
+--   - If is_valid is already boolean, this is idempotent and only normalizes null/default.
+
+BEGIN;
+
+LOCK TABLE tg_bot_validations IN ACCESS EXCLUSIVE MODE;
+
+DO $$
+DECLARE
+  col_type text;
+BEGIN
+  SELECT data_type
+  INTO col_type
+  FROM information_schema.columns
+  WHERE table_schema = 'public'
+    AND table_name = 'tg_bot_validations'
+    AND column_name = 'is_valid';
+
+  IF col_type IS NULL THEN
+    RAISE EXCEPTION 'Column public.tg_bot_validations.is_valid does not exist.';
+  END IF;
+
+  -- Already boolean: just normalize constraints/default and null values.
+  IF col_type = 'boolean' THEN
+    EXECUTE 'UPDATE public.tg_bot_validations SET is_valid = FALSE WHERE is_valid IS NULL';
+    EXECUTE 'ALTER TABLE public.tg_bot_validations ALTER COLUMN is_valid SET DEFAULT FALSE';
+    EXECUTE 'ALTER TABLE public.tg_bot_validations ALTER COLUMN is_valid SET NOT NULL';
+    RETURN;
+  END IF;
+
+  -- Legacy integer/numeric-like values: convert safely through a temp column.
+  IF col_type IN ('smallint', 'integer', 'bigint', 'numeric', 'real', 'double precision') THEN
+    IF EXISTS (
+      SELECT 1
+      FROM information_schema.columns
+      WHERE table_schema = 'public'
+        AND table_name = 'tg_bot_validations'
+        AND column_name = 'is_valid_tmp_bool'
+    ) THEN
+      EXECUTE 'ALTER TABLE public.tg_bot_validations DROP COLUMN is_valid_tmp_bool';
+    END IF;
+
+    EXECUTE 'ALTER TABLE public.tg_bot_validations ADD COLUMN is_valid_tmp_bool boolean';
+
+    -- Preserve semantics:
+    --   1 / true-like => TRUE
+    --   everything else (0, null, invalid) => FALSE
+    EXECUTE $sql$
+      UPDATE public.tg_bot_validations
+      SET is_valid_tmp_bool = CASE
+        WHEN is_valid IS NULL THEN FALSE
+        WHEN is_valid::text IN ('1', 't', 'true', 'TRUE') THEN TRUE
+        ELSE FALSE
+      END
+    $sql$;
+
+    EXECUTE 'ALTER TABLE public.tg_bot_validations ALTER COLUMN is_valid_tmp_bool SET DEFAULT FALSE';
+    EXECUTE 'ALTER TABLE public.tg_bot_validations ALTER COLUMN is_valid_tmp_bool SET NOT NULL';
+
+    EXECUTE 'ALTER TABLE public.tg_bot_validations DROP COLUMN is_valid';
+    EXECUTE 'ALTER TABLE public.tg_bot_validations RENAME COLUMN is_valid_tmp_bool TO is_valid';
+
+    RETURN;
+  END IF;
+
+  RAISE EXCEPTION 'Unsupported source type for tg_bot_validations.is_valid: %', col_type;
+END $$;
+
+COMMIT;