From a2c9aeb8dd2f8e3a9c56590a10d44fe25e612cf5 Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Sun, 31 May 2020 12:01:21 -0500
Subject: [PATCH] Conditionally fetch /nodeinfo/2.1.json for Pleroma < 2.1,
 #137

---
 app/soapbox/actions/instance.js  | 37 ++++++++++++++++++++++++++++++--
 app/soapbox/reducers/instance.js | 20 ++++++++++++++++-
 2 files changed, 54 insertions(+), 3 deletions(-)

diff --git a/app/soapbox/actions/instance.js b/app/soapbox/actions/instance.js
index 2be8418fd..16294034a 100644
--- a/app/soapbox/actions/instance.js
+++ b/app/soapbox/actions/instance.js
@@ -1,18 +1,36 @@
 import api from '../api';
+import { get } from 'lodash';
+import { parseVersion } from 'soapbox/utils/features';
 
-export const INSTANCE_IMPORT  = 'INSTANCE_IMPORT';
-export const INSTANCE_FAIL    = 'INSTANCE_FAIL';
+export const INSTANCE_IMPORT = 'INSTANCE_IMPORT';
+export const INSTANCE_FAIL   = 'INSTANCE_FAIL';
+export const NODEINFO_IMPORT = 'NODEINFO_IMPORT';
+export const NODEINFO_FAIL   = 'NODEINFO_FAIL';
 
 export function fetchInstance() {
   return (dispatch, getState) => {
     api(getState).get('/api/v1/instance').then(response => {
       dispatch(importInstance(response.data));
+      const v = parseVersion(get(response.data, 'version'));
+      if (v.software === 'Pleroma' && !get(response.data, ['pleroma', 'metadata'])) {
+        dispatch(fetchNodeinfo()); // Pleroma < 2.1 backwards compatibility
+      }
     }).catch(error => {
       dispatch(instanceFail(error));
     });
   };
 }
 
+export function fetchNodeinfo() {
+  return (dispatch, getState) => {
+    api(getState).get('/nodeinfo/2.1.json').then(response => {
+      dispatch(importNodeinfo(response.data));
+    }).catch(error => {
+      dispatch(nodeinfoFail(error));
+    });
+  };
+}
+
 export function importInstance(instance) {
   return {
     type: INSTANCE_IMPORT,
@@ -27,3 +45,18 @@ export function instanceFail(error) {
     skipAlert: true,
   };
 };
+
+export function importNodeinfo(nodeinfo) {
+  return {
+    type: NODEINFO_IMPORT,
+    nodeinfo,
+  };
+}
+
+export function nodeinfoFail(error) {
+  return {
+    type: NODEINFO_FAIL,
+    error,
+    skipAlert: true,
+  };
+};
diff --git a/app/soapbox/reducers/instance.js b/app/soapbox/reducers/instance.js
index 716b7aaa6..45211f754 100644
--- a/app/soapbox/reducers/instance.js
+++ b/app/soapbox/reducers/instance.js
@@ -1,6 +1,22 @@
-import { INSTANCE_IMPORT } from '../actions/instance';
+import {
+  INSTANCE_IMPORT,
+  NODEINFO_IMPORT,
+} from '../actions/instance';
 import { Map as ImmutableMap, fromJS } from 'immutable';
 
+const nodeinfoToInstance = nodeinfo => {
+  // Match Pleroma's develop branch
+  return ImmutableMap({
+    pleroma: ImmutableMap({
+      metadata: ImmutableMap({
+        account_activation_required: nodeinfo.getIn(['metadata', 'accountActivationRequired']),
+        features: nodeinfo.getIn(['metadata', 'features']),
+        federation: nodeinfo.getIn(['metadata', 'federation']),
+      }),
+    }),
+  });
+};
+
 // Set Mastodon defaults, overridden by Pleroma servers
 const initialState = ImmutableMap({
   max_toot_chars: 500,
@@ -16,6 +32,8 @@ export default function instance(state = initialState, action) {
   switch(action.type) {
   case INSTANCE_IMPORT:
     return initialState.merge(fromJS(action.instance));
+  case NODEINFO_IMPORT:
+    return nodeinfoToInstance(fromJS(action.nodeinfo)).merge(state);
   default:
     return state;
   }