Stub the code in util/discord for server prefs work (#15, #30, #31, #49…

…). One more focused session should finish all this up

util/discord.js

@@ -5,6 +5,14 @@ const debug = msg => console.log(`sprefs: ${msg}`)
 // Public constants for main bot.js process to watch for
 const LISTEN_KEY = `heylisten`
 const DEAFEN_KEY = `begonebot`
+const DEFAULT_CHANNELS = [
+    "bot", 
+    "botspam",
+    "battles", 
+    "beat-challenge-submissions", 
+    "beat-battle", 
+    "submissions"
+]
 
 // Live cache for fast access
 let serverPrefs = {}
@@ -17,20 +25,76 @@ try {
   serverPrefs = {}
 }
 
-// Simple persistence layer
+// Simple persistence layer, stringify params result in human-readable output
 function _savePreferences(){
   try {
     fs.writeFileSync(_cacheFile, JSON.stringify(serverPrefs, null, 2))
   } catch(error) {
     debug(`error saving cache: ${error}`)
+  } 
+}
+
+function _initServerPrefs(serverKey){
+  //TODO verify this looks good
+  serverPrefs[serverKey] = {
+    'name': serverName?,
+    'botmodroles': [],
+    'channels': {}
+  }
+  for (let chanName in DEFAULT_CHANNELS){
+    if (chanName in server){
+      serverPrefs[serverKey]['channels'][CHANNELID] = {
+        'votemax': 3,
+        'rules': 'No rules saved for this channel yet',
+        'winners': []
+      }
+    }
+  }
+}
+
+function _getServerData(discordJsMsg){
+  //TODO this is very broken
+  const serverKey = discordJsMsg.server
+  if (!discordJsMsg in serverPrefs){
+    _initServer(serverKey)
+  }
+  return serverPrefs[serverKey]
+}
+
+// Splitting this out for cleaner code
+function _authorHasBotModRole(discordJsMsg){
+  // TODO #15 and #49
+  const prefs = _getServerData(discordJsMsg.server)
+  for (let modRole of prefs['botmodroles']) {
+    if (discordJsMsg.author.roles.includes(modRole)) {
+      return true
+    }
   }
+  return false
+}
+
+exports.updateBotModRoles = function(input, msg) {
+  // TODO add and remove logic #49
+}
+
+exports.listenToChannel = function(input, msg) {
+  // TODO #30
+}
+
+exports.stopListeningToChannel = function(input, msg) {
+  // TODO #31
 }
 
 // Relies on discord permission scheme: https://discord.com/developers/docs/topics/permissions
 exports.isPowerfulMember = function(discordJsMsg){
-  const isAdmin = discordJsMsg.member.permissions.any(['ADMINISTRATOR', 'MANAGE_CHANNELS'])
-  //TODO: const hasBotRole = msg.member.roles.any()
-  return isAdmin // || hasBotRole
+  // Channel managers and admins get highest priority
+  if (discordJsMsg.member.permissions.any(['ADMINISTRATOR', 'MANAGE_CHANNELS'])) {
+    return true
+  }
+  if (_authorHasBotModRole(discordJsMsg)){
+    return true
+  }
+  return false
 }
 
 exports.getRoleFromMessageGuild = function(roleinput, message){