fix: commands shouldn't be in ASC order

src/lodash.uniq.d.ts

@@ -0,0 +1,3 @@
+declare module 'lodash' {
+  declare function uniq<T>(s: T[]): T[]
+}

src/store/modules/bot-commands/bot-commands-actions.ts

@@ -5,5 +5,8 @@ import { BotCommand, BotCommandsState } from '@/store/modules/bot-commands/types
 export const actions: ActionTree<BotCommandsState, RootState> = {
   addBotCommand({ commit }, value: BotCommand): void {
     commit('addCommand', value)
+  },
+  initBotCommands({ commit }, value: { partnerId: string; commands: string[] }): void {
+    commit('initCommands', value)
   }
 }

src/store/modules/bot-commands/bot-commands-mutations.ts

@@ -1,5 +1,6 @@
 import { MutationTree } from 'vuex'
 import { BotCommand, BotCommandsState } from '@/store/modules/bot-commands/types.ts'
+import { uniq } from 'lodash'
 
 export const mutations: MutationTree<BotCommandsState> = {
   addCommand(state, botCommand: BotCommand): void {
@@ -15,5 +16,12 @@ export const mutations: MutationTree<BotCommandsState> = {
       botCommands.push(commandValue)
     }
     state.commands[botCommand.partnerId] = botCommands
+  },
+
+  initCommands(state, { partnerId, commands }: { partnerId: string; commands: string[] }): void {
+    const botCommands = state.commands[partnerId]
+    if (!botCommands) {
+      state.commands[partnerId] = uniq(commands)
+    }
   }
 }

src/store/modules/chat/index.js

@@ -558,6 +558,20 @@ const actions = {
       .then(({ messages, lastOffset }) => {
         dispatch('unshiftMessages', messages)
 
+        if (messages && offset === 0) {
+          dispatch(
+            'botCommands/initBotCommands',
+            {
+              partnerId: contactId,
+              commands: messages
+                .filter((item) => item.message.startsWith('/'))
+                .map((item) => item.message.trim())
+                .reverse()
+            },
+            { root: true }
+          )
+        }
+
         if (messages.length <= 0) {
           commit('setChatOffset', { contactId, offset: -1 }) // no more messages
         } else {