Erweitere Schema fuer Shopify Delta Import

db/migrations/0010_shopify_delta_order_schema.sql

@@ -0,0 +1,68 @@
+BEGIN;
+
+-- Additive Shopify delta-sync identities. Existing Wix and direct orders,
+-- their lines and their lot allocations remain unchanged.
+
+ALTER TABLE sales_order
+  ADD COLUMN IF NOT EXISTS shopify_order_gid TEXT,
+  ADD COLUMN IF NOT EXISTS shopify_order_name TEXT,
+  ADD COLUMN IF NOT EXISTS shopify_created_at TIMESTAMP,
+  ADD COLUMN IF NOT EXISTS shopify_updated_at TIMESTAMP,
+  ADD COLUMN IF NOT EXISTS shopify_financial_status TEXT,
+  ADD COLUMN IF NOT EXISTS shopify_fulfillment_status TEXT;
+
+ALTER TABLE sales_order_line
+  ADD COLUMN IF NOT EXISTS shopify_line_item_gid TEXT,
+  ADD COLUMN IF NOT EXISTS shopify_variant_gid TEXT,
+  ADD COLUMN IF NOT EXISTS shopify_product_gid TEXT,
+  ADD COLUMN IF NOT EXISTS sku TEXT;
+
+ALTER TABLE external_item_alias
+  ADD COLUMN IF NOT EXISTS shopify_product_gid TEXT,
+  ADD COLUMN IF NOT EXISTS shopify_variant_gid TEXT;
+
+CREATE TABLE IF NOT EXISTS party_external_identity (
+  id BIGSERIAL PRIMARY KEY,
+  party_id BIGINT NOT NULL REFERENCES party(id) ON DELETE CASCADE,
+  source_system TEXT NOT NULL,
+  external_id TEXT NOT NULL,
+  observed_at TIMESTAMP NOT NULL DEFAULT NOW(),
+  created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+  updated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+  CONSTRAINT uq_party_external_identity_source_external UNIQUE (source_system, external_id)
+);
+
+ALTER TABLE sales_order
+  DROP CONSTRAINT IF EXISTS chk_sales_order_source;
+
+ALTER TABLE sales_order
+  ADD CONSTRAINT chk_sales_order_source
+  CHECK (order_source IN ('wix', 'direct', 'shopify'));
+
+ALTER TABLE sales_order
+  DROP CONSTRAINT IF EXISTS chk_sales_order_payment_status;
+
+ALTER TABLE sales_order
+  ADD CONSTRAINT chk_sales_order_payment_status
+  CHECK (payment_status IN ('pending', 'authorized', 'paid', 'partially_refunded', 'refunded', 'voided', 'unknown'));
+
+CREATE UNIQUE INDEX IF NOT EXISTS uq_sales_order_shopify_order_gid
+  ON sales_order(shopify_order_gid)
+  WHERE shopify_order_gid IS NOT NULL;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uq_sales_order_line_shopify_line_item_gid
+  ON sales_order_line(shopify_line_item_gid)
+  WHERE shopify_line_item_gid IS NOT NULL;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uq_external_item_alias_shopify_variant_gid
+  ON external_item_alias(shopify_variant_gid)
+  WHERE shopify_variant_gid IS NOT NULL;
+
+CREATE INDEX IF NOT EXISTS idx_party_external_identity_party
+  ON party_external_identity(party_id);
+
+CREATE INDEX IF NOT EXISTS idx_sales_order_shopify_updated_at
+  ON sales_order(shopify_updated_at DESC)
+  WHERE shopify_order_gid IS NOT NULL;
+
+COMMIT;