[refact] move functions from index.ts to other places

src/exit_code.ts

@@ -0,0 +1,4 @@
+export const EXIT_TASK_FAILED = 1
+export const EXIT_LOGIN_FAILED = 69
+export const EXIT_CODE_INVALID_ARGUMENT = 87
+export const EXIT_CODE_UNKNOWN_ERROR = 255

src/index.ts

@@ -3,11 +3,13 @@ import path from 'path'
 import log from 'loglevel' // cspell: ignore loglevel
 import { program } from 'commander'
 import Bot from './pinkoi-bot'
-
-const EXIT_TASK_FAILED = 1
-const EXIT_LOGIN_FAILED = 69
-const EXIT_CODE_INVALID_ARGUMENT = 87
-const EXIT_CODE_UNKNOWN_ERROR = 255
+import { setupLogging, validateArgs } from './util'
+import {
+  EXIT_CODE_INVALID_ARGUMENT,
+  EXIT_CODE_UNKNOWN_ERROR,
+  EXIT_LOGIN_FAILED,
+  EXIT_TASK_FAILED
+} from './exit_code'
 
 const version = '1.3.0'
 const majorVersion = version.split('.')[0]
@@ -30,25 +32,9 @@ program
   )
 
 const args = program.parse(process.argv).opts()
+validateArgs(args)
 
-if (process.env['DEBUG']) {
-  log.setDefaultLevel('debug')
-  if (args.quiet) {
-    log.warn('Option `--quiet` is ignored in debug mode.')
-  }
-} else if (args.quiet) {
-  log.setDefaultLevel('warn')
-} else {
-  log.setDefaultLevel('info')
-}
-
-// Argument validation.
-if (args.checkin === args.solveWeeklyMission) {
-  log.error(
-    'You should run exactly one of --checkin or --solve-weekly-mission.'
-  )
-  process.exit(EXIT_CODE_INVALID_ARGUMENT)
-}
+setupLogging(args)
 
 async function main() {
   log.info('Start pinkoi coins bot v' + version + '.')

src/util.ts

@@ -1,3 +1,33 @@
+import log from 'loglevel' // cspell: ignore loglevel
+import { OptionValues } from 'commander'
+import { EXIT_CODE_INVALID_ARGUMENT } from './exit_code'
+
 export function sleep() {
   return new Promise((res) => setTimeout(res, 500))
 }
+
+export function setupLogging(args: OptionValues) {
+  if (process.env['DEBUG']) {
+    log.setDefaultLevel('debug')
+    if (args.quiet) {
+      log.warn('Option `--quiet` is ignored in debug mode.')
+    }
+  } else if (args.quiet) {
+    log.setDefaultLevel('warn')
+  } else {
+    log.setDefaultLevel('info')
+  }
+}
+
+function requireCheckinOrSolveWeeklyMission(args: OptionValues) {
+  if (args.checkin === args.solveWeeklyMission) {
+    log.error(
+      'You should run exactly one of --checkin or --solve-weekly-mission.'
+    )
+    process.exit(EXIT_CODE_INVALID_ARGUMENT)
+  }
+}
+
+export function validateArgs(args: OptionValues) {
+  requireCheckinOrSolveWeeklyMission(args)
+}