import type { Lang } from '../locales'
import { readFileSync } from 'node:fs'
import path from 'node:path'
import { prompt } from 'enquirer'
import { locales } from '../locales'
import { execCommand } from '../shared'

interface PromptObject {
  types: string
  scopes: string
  description: string
}

/**
 * Git commit with Conventional Commits standard
 *
 * @param lang
 */
export async function gitCommit(lang: Lang = 'en-us') {
  const { gitCommitMessages, gitCommitTypes, gitCommitScopes } = locales[lang]

  const typesChoices = gitCommitTypes.map(([value, msg]) => {
    const nameWithSuffix = `${value}:`

    const message = `${nameWithSuffix.padEnd(12)}${msg}`

    return {
      name: value,
      message,
    }
  })

  const scopesChoices = gitCommitScopes.map(([value, msg]) => ({
    name: value,
    message: `${value.padEnd(30)} (${msg})`,
  }))

  const result = await prompt<PromptObject>([
    {
      name: 'types',
      type: 'select',
      message: gitCommitMessages.types,
      choices: typesChoices,
    },
    {
      name: 'scopes',
      type: 'select',
      message: gitCommitMessages.scopes,
      choices: scopesChoices,
    },
    {
      name: 'description',
      type: 'text',
      message: gitCommitMessages.description,
    },
  ])

  const breaking = result.description.startsWith('!') ? '!' : ''

  const description = result.description.replace(/^!/, '').trim()

  const commitMsg = `${result.types}(${result.scopes})${breaking}: ${description}`

  await execCommand('git', ['commit', '-m', commitMsg], { stdio: 'inherit' })
}

/** Git commit message verify */
export async function gitCommitVerify(lang: Lang = 'en-us', ignores: RegExp[] = []) {
  const gitPath = await execCommand('git', ['rev-parse', '--show-toplevel'])

  const gitMsgPath = path.join(gitPath, '.git', 'COMMIT_EDITMSG')

  const commitMsg = readFileSync(gitMsgPath, 'utf8').trim()

  if (ignores.some(regExp => regExp.test(commitMsg)))
    return

  const REG_EXP = /(?<type>[a-z]+)(?:\((?<scope>.+)\))?(?<breaking>!)?: (?<description>.+)/i

  if (!REG_EXP.test(commitMsg)) {
    const errorMsg = locales[lang].gitCommitVerify

    throw new Error(errorMsg)
  }
}