From 469f38b7683d48b95805e0341f44f7839863f702 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20S=C3=A1?= <siiky@users.noreply.github.com>
Date: Tue, 26 Apr 2022 14:12:52 +0100
Subject: [PATCH] feat: put T&C in its own query

---
 lib/graphql/resolvers.js | 63 ++++++++++++++++++++++++++++++----------
 lib/graphql/types.js     | 10 +++++--
 2 files changed, 54 insertions(+), 19 deletions(-)

diff --git a/lib/graphql/resolvers.js b/lib/graphql/resolvers.js
index 01c2adb5..2e0c68b0 100644
--- a/lib/graphql/resolvers.js
+++ b/lib/graphql/resolvers.js
@@ -68,18 +68,6 @@ const buildTriggers = (allTriggers) => {
     })
 }
 
-/*
- * TODO: From `lib/routes/termsAndConditionsRoutes.js` -- remove this after
- * terms are removed from the GraphQL API too.
- */
-const massageTerms = terms => (terms.active && terms.text) ? ({
-  delay: Boolean(terms.delay),
-  title: terms.title,
-  text: nmd(terms.text),
-  accept: terms.acceptButtonText,
-  cancel: terms.cancelButtonText,
-}) : null
-
 const staticConfig = ({ currentConfigVersion, deviceId, deviceName, pq, settings, }) => {
   const massageCoins = _.map(_.pick([
     'batchable',
@@ -112,7 +100,6 @@ const staticConfig = ({ currentConfigVersion, deviceId, deviceName, pq, settings
     configManager.getLocale(deviceId, settings.config),
     configManager.getOperatorInfo(settings.config),
     configManager.getReceipt(settings.config),
-    massageTerms(configManager.getTermsConditions(settings.config)),
     !!configManager.getCashOut(deviceId, settings.config).active,
   ])
     .then(([
@@ -123,7 +110,6 @@ const staticConfig = ({ currentConfigVersion, deviceId, deviceName, pq, settings
       localeInfo,
       operatorInfo,
       receiptInfo,
-      terms,
       twoWayMode,
     ]) =>
       (currentConfigVersion && currentConfigVersion >= staticConf.configVersion) ?
@@ -143,7 +129,6 @@ const staticConfig = ({ currentConfigVersion, deviceId, deviceName, pq, settings
           twoWayMode,
           speedtestFiles,
           urlsToPing,
-          terms,
         }),
         _.update('triggersAutomation', _.mapValues(_.eq('Automatic'))),
         addOperatorInfo(operatorInfo),
@@ -232,8 +217,54 @@ const configs = (parent, { currentConfigVersion }, { deviceId, deviceName, opera
       }),
     }))
 
+
+const massageTerms = terms => (terms.active && terms.text) ? ({
+  delay: Boolean(terms.delay),
+  title: terms.title,
+  text: nmd(terms.text),
+  accept: terms.acceptButtonText,
+  cancel: terms.cancelButtonText,
+}) : null
+
+/*
+ * The type of the result of `configManager.getTermsConditions()` is more or
+ * less `Maybe (Maybe Hash, Maybe TC)`. Each case has a specific meaning to the
+ * machine:
+ *
+ * Nothing => Nothing
+ *   There are no T&C or they've been removed/disabled.
+ *
+ * Just (Nothing, _) => Nothing
+ *   Shouldn't happen! Treated as if there were no T&C.
+ *
+ * Just (Just hash, Nothing) => Nothing
+ *   May happen (after `massageTerms`) if T&C are disabled.
+ *
+ * Just (Just hash, Just tc) => Just (hash, Just tc) or Just (hash, Nothing)
+ *   `tc` is sent depending on whether the `hash` differs from `currentHash` or
+ *   not.
+ */
+const terms = (parent, { currentHash }, { settings }, info) => {
+  const isNone = x => _.isNil(x) || _.isEmpty(x)
+
+  const latestTerms = configManager.getTermsConditions(settings.config)
+  if (isNone(latestTerms)) return null
+
+  const hash = latestTerms.hash
+  if (!_.isString(hash)) return null
+
+  if (hash === currentHash) return { hash, details: null }
+
+  const details = massageTerms(latestTerms)
+  if (isNone(details)) return null
+
+  return { hash, details }
+}
+
+
 module.exports = {
   Query: {
-    configs
+    configs,
+    terms,
   }
 }
diff --git a/lib/graphql/types.js b/lib/graphql/types.js
index a9318978..ae4b24d3 100644
--- a/lib/graphql/types.js
+++ b/lib/graphql/types.js
@@ -69,7 +69,7 @@ type Trigger {
   thresholdDays: Int
 }
 
-type Terms {
+type TermsDetails {
   delay: Boolean!
   title: String!
   text: String!
@@ -77,6 +77,11 @@ type Terms {
   cancel: String!
 }
 
+type Terms {
+  hash: String!
+  details: TermsDetails
+}
+
 type StaticConfig {
   configVersion: Int!
 
@@ -98,8 +103,6 @@ type StaticConfig {
 
   triggersAutomation: TriggersAutomation!
   triggers: [Trigger!]!
-
-  terms: Terms
 }
 
 type DynamicCoinValues {
@@ -147,5 +150,6 @@ type Configs {
 
 type Query {
   configs(currentConfigVersion: Int): Configs!
+  terms(currentHash: String): Terms
 }
 `