import { and, eq } from 'drizzle-orm'
import { roles, userRoles, users } from '../../../../../db/schema'

export default defineEventHandler(async (event) => {
  const admin = await requirePermission(event, 'users.manage')
  const userId = Number(getRouterParam(event, 'id'))
  const roleId = Number(getRouterParam(event, 'roleId'))
  if (!Number.isInteger(userId) || userId <= 0 || !Number.isInteger(roleId) || roleId <= 0) {
    throw createError({ statusCode: 400, statusMessage: 'Ungültige ID' })
  }
  const db = useDb()

  const [role] = await db.select({ name: roles.name }).from(roles).where(eq(roles.id, roleId)).limit(1)
  if (!role) {
    throw createError({ statusCode: 404, statusMessage: 'Rolle nicht gefunden' })
  }
  if (role.name === 'admin' && userId === admin.id) {
    throw createError({ statusCode: 400, statusMessage: 'Du kannst dir nicht selbst die Admin-Rolle entziehen' })
  }

  const [target] = await db.select({ name: users.name }).from(users).where(eq(users.id, userId)).limit(1)
  const result = await db.delete(userRoles).where(and(eq(userRoles.userId, userId), eq(userRoles.roleId, roleId)))
  if (result[0].affectedRows) {
    await logAudit(admin.id, 'remove_role', { type: 'user', id: userId }, { userName: target?.name ?? null, role: role.name })
  }
  return { ok: true }
})