feat: add /cancel command

src/bot.ts

@@ -1,5 +1,6 @@
 import { Bot, Context, session, SessionFlavor } from 'grammy'
 import { start } from './commands'
+import { cancel } from './commands/cancel'
 import { AppConfig } from './config'
 import { WizardFlavor, wizards } from './util/wizard'
 import setInfo from './wizards/set-info'
@@ -29,6 +30,7 @@ export async function getBot(config: AppConfig) {
 
   bot.use(...wizards([setInfo]))
 
+  bot.command(cancel.name, cancel.fn)
   bot.command(start.name, start.fn)
 
   return bot

src/commands/cancel.ts

@@ -0,0 +1,16 @@
+import { AppContext } from '../bot'
+
+export const cancel = {
+  name: 'cancel',
+  helpText: 'Cancela a operação atual',
+  fn: (ctx: AppContext) => {
+    if (ctx.session.wizard?.id === 'setInfo') {
+      ctx.session.city = ''
+      ctx.session.name = ''
+      ctx.session.pixKey = ''
+    }
+    ctx.wizard.exit()
+    delete ctx.session.query
+    return ctx.reply('Ok, deixa pra lá')
+  }
+}