module.exports = (R, $) => {
  R.get('/api/servers', async (ctx) => {
    try {
      const { userId } = ctx.session
      const srv = $.discord.getRelevantServers(userId)
      const presentable = await $.P.presentableServers(srv, userId)

      ctx.body = presentable
    } catch (e) {
      console.error(e.trace)
    }
  })

  R.get('/api/server/:id', async (ctx) => {
    const { userId } = ctx.session
    const { id } = ctx.params

    const srv = $.discord.client.guilds.get(id)

    if (srv == null) {
      ctx.body = { err: 'not found' }
      ctx.status = 404
      return
    }

    const gm = $.discord.gm(id, userId)
    const server = await $.P.presentableServer(srv, gm)

    ctx.body = server
  })

  R.patch('/api/server/:id', async (ctx) => {
    const { userId } = ctx.session
    const { id } = ctx.params
    let gm = $.discord.gm(id, userId)

    // check perms
    if (!$.discord.getPermissions(gm).canManageRoles) {
      ctx.status = 403
      ctx.body = { err: 'cannot_manage_roles' }
      return
    }

    const { message = null, categories = null } = ctx.request.body

    // todo make less nasty
    await $.server.update(id, {
      ...((message != null) ? { message } : {}),
      ...((categories != null) ? { categories } : {})
    })

    ctx.body = { ok: true }
  })

  R.patch('/api/servers/:server/roles', async ctx => {
    const { userId } = ctx.session
    const { server } = ctx.params
    let gm = $.discord.gm(server, userId)

    const { added, removed } = ctx.request.body

    const allowedRoles = await $.server.getAllowedRoles(server)

    const pred = r => $.discord.safeRole(server, r) && allowedRoles.indexOf(r) !== -1

    if (added.length > 0) {
      gm = await gm.addRoles(added.filter(pred))
    }

    if (removed.length > 0) {
      gm = await gm.removeRoles(removed.filter(pred))
    }

    ctx.body = { ok: true }
  })
}