add udHistory by identity, hasura style

.env.example

 DB_NAME=squid
 DB_PASSWORD=postgres
 DB_DEV_PORT=5432
-GQL_PORT=4350
 GENESIS_FILE="gdev.json"        # "test.json"
 HISTORY_FILE="history.json"     # "history_empty.json"
 HASURA_GRAPHQL_ADMIN_SECRET=my_hasura_password

hasura/metadata/databases/default/tables/public_identity.yaml

@@ -65,3 +65,10 @@ array_relationships:
         table:
           name: ud_history
           schema: public
+computed_fields:
+  - name: ud_history
+    definition:
+      function:
+        name: get_ud_history
+        schema: public
+    comment: Get history of universal dividend created by this identity

hasura/metadata/query_collections.yaml

-
 []

hasura/migrations/default/1708136081522_init/up.sql → hasura/migrations/default/1708143845816_init/up.sql

 SET check_function_bodies = false;
+CREATE TABLE public.identity (
+    id character varying NOT NULL,
+    index integer NOT NULL,
+    name text NOT NULL,
+    status character varying(11) NOT NULL,
+    created_on integer NOT NULL,
+    last_change_on integer NOT NULL,
+    smith_status character varying(8),
+    is_member boolean NOT NULL,
+    expire_on integer NOT NULL,
+    account_id character varying,
+    created_in_id character varying
+);
+CREATE TABLE public.ud_history (
+    id character varying NOT NULL,
+    amount integer NOT NULL,
+    block_number integer NOT NULL,
+    "timestamp" timestamp with time zone NOT NULL,
+    identity_id character varying
+);
+CREATE FUNCTION public.get_ud_history(identity_row public.identity) RETURNS SETOF public.ud_history
+    LANGUAGE plpgsql STABLE
+    AS $$
+BEGIN
+    RETURN QUERY
+    SELECT
+        CAST('ud-' || identity_row.name || '-' || ud.block_number || '-' || ud.event_id AS character varying) AS id,
+        ud.amount,
+        ud.block_number,
+        b.timestamp,
+        identity_row.id AS identity_id
+    FROM
+        public.universal_dividend ud
+    JOIN public.block b ON ud.block_number = b.height
+    WHERE
+        EXISTS (
+            SELECT 1
+            FROM (
+                SELECT
+                    me1.block_number as creation_block,
+                    COALESCE(
+                        (
+                            SELECT me2.block_number
+                            FROM public.membership_event me2
+                            WHERE me2.identity_id = me1.identity_id
+                                AND me2.event_type = 'REMOVAL'
+                                AND me2.block_number > me1.block_number
+                            ORDER BY me2.block_number
+                            LIMIT 1
+                        ),
+                        (SELECT MAX(block_number) FROM public.universal_dividend)
+                    ) as removal_block
+                FROM public.membership_event me1
+                WHERE me1.identity_id = identity_row.id
+                    AND me1.event_type = 'CREATION'
+            ) as membership_periods
+            WHERE ud.block_number >= membership_periods.creation_block
+                AND ud.block_number <= membership_periods.removal_block
+        );
+END;
+$$;
 CREATE TABLE public.account (
     id character varying NOT NULL,
     linked_identity_id character varying
@@ -80,19 +141,6 @@ CREATE TABLE public.extrinsic (
     block_id character varying,
     call_id character varying
 );
-CREATE TABLE public.identity (
-    id character varying NOT NULL,
-    index integer NOT NULL,
-    name text NOT NULL,
-    status character varying(11) NOT NULL,
-    created_on integer NOT NULL,
-    last_change_on integer NOT NULL,
-    smith_status character varying(8),
-    is_member boolean NOT NULL,
-    expire_on integer NOT NULL,
-    account_id character varying,
-    created_in_id character varying
-);
 CREATE TABLE public.items_counter (
     id character varying NOT NULL,
     type character varying(10) NOT NULL,
@@ -134,13 +182,6 @@ CREATE TABLE public.transfer (
     from_id character varying,
     to_id character varying
 );
-CREATE TABLE public.ud_history (
-    id character varying NOT NULL,
-    amount integer NOT NULL,
-    block_number integer NOT NULL,
-    "timestamp" timestamp with time zone NOT NULL,
-    identity_id character varying
-);
 CREATE TABLE public.ud_reeval (
     id character varying NOT NULL,
     block_number integer NOT NULL,