import bcrypt from 'bcrypt'
import { createError, readBody } from 'h3'
import { z } from 'zod'
import { getUserByIdWithPassword, updateMemberPassword } from '../../repositories/member-repository'
import { requireMemberSession } from '../../utils/member-auth'

const updatePasswordSchema = z.object({
  currentPassword: z.string().min(1),
  nextPassword: z.string().min(8).max(32)
})

/**
 * 회원 비밀번호 변경 API
 * @param {import('h3').H3Event} event - 요청 이벤트
 * @returns {Promise<{ ok: true }>} 변경 결과
 */
export default defineEventHandler(async (event) => {
  const session = requireMemberSession(event)
  const parsedBody = updatePasswordSchema.safeParse(await readBody(event))

  if (!parsedBody.success) {
    throw createError({
      statusCode: 400,
      message: '비밀번호 변경 요청 형식이 올바르지 않습니다.'
    })
  }

  const user = await getUserByIdWithPassword(session.userId)
  if (!user) {
    throw createError({
      statusCode: 404,
      message: '회원 정보를 찾을 수 없습니다.'
    })
  }

  const isCurrentValid = await bcrypt.compare(parsedBody.data.currentPassword, user.passwordHash)
  if (!isCurrentValid) {
    throw createError({
      statusCode: 401,
      message: '현재 비밀번호가 올바르지 않습니다.'
    })
  }

  const nextHash = await bcrypt.hash(parsedBody.data.nextPassword, 12)
  await updateMemberPassword({
    userId: session.userId,
    passwordHash: nextHash
  })

  return { ok: true }
})