Revert drep_info to use null value for expires_epoch_no and deposit i…

…f unregistered.

files/grest/rpc/governance/drep_info.sql

@@ -98,9 +98,9 @@ BEGIN
       ENCODE(dh.raw, 'hex')::text AS hex,
       dh.has_script AS has_script,
       (CASE WHEN starts_with(dh.view,'drep_') OR (COALESCE(dr.deposit, 0) >= 0 AND dr.drep_hash_id IS NOT NULL) THEN TRUE ELSE FALSE END) AS registered,
-      (CASE WHEN (dr.deposit < 0) OR starts_with(dh.view,'drep_') THEN 0 ELSE COALESCE(ds.deposit, 0) END)::text AS deposit,
+      (CASE WHEN (dr.deposit < 0) OR starts_with(dh.view,'drep_') THEN NULL ELSE ds.deposit END)::text AS deposit,
       (CASE WHEN starts_with(dh.view,'drep_') THEN TRUE ELSE COALESCE(dr.deposit, 0) >= 0 AND ds.active END) AS active,
-      (CASE WHEN COALESCE(dr.deposit, 0) >= 0 THEN COALESCE(ds.expires_epoch_no, 0) ELSE 0 END) AS expires_epoch_no,
+      (CASE WHEN COALESCE(dr.deposit, 0) >= 0 THEN ds.expires_epoch_no ELSE NULL END) AS expires_epoch_no,
       COALESCE(dd.amount, 0)::text AS amount
     FROM public.drep_hash AS dh
       LEFT JOIN public.drep_registration AS dr ON dh.id = dr.drep_hash_id

specs/templates/1-api-info.yaml

@@ -7,7 +7,7 @@ info:
   license:
     name: Creative Commons Attribution 4.0 International
     url: https://github.com/cardano-community/koios-artifacts/blob/main/LICENSE
-  version: v1.1.3
+  version: v1.2.0a
   description: |
     Koios is best described as a Decentralized and Elastic RESTful query layer for exploring data on Cardano blockchain to consume within applications/wallets/explorers/etc. This page not only provides an OpenAPI Spec for live implementation, but also ability to execute live demo from client browser against each endpoint with pre-filled examples.
 

specs/templates/4-api-schemas.yaml

@@ -2273,15 +2273,19 @@ schemas:
             description: Flag to show if the DRep is currently registered
             example: false
           deposit:
-            type: string
+            type:
+              - string
+              - null
             description: DRep's registration deposit  in lovelace
             example: 500000000
           active:
             type: boolean
             description: Flag to show if the DRep is  (i.e. not expired)
             example: true
           expires_epoch_no:
-            type: number
+            type:
+              - number
+              - null
             description: After which epoch DRep is considered inactive.
             example: 410
           amount: