<script setup lang="ts">
import InputGroup from 'primevue/inputgroup'
import InputGroupAddon from 'primevue/inputgroupaddon'
import { ping } from 'tauri-plugin-vpnservice-api'
import { getOsHostname } from '~/composables/network'

import { NetworkingMethod } from '~/types/network'

const props = defineProps<{
  configInvalid?: boolean
  instanceId?: string
}>()

defineEmits(['runNetwork'])

const { t } = useI18n()

const networking_methods = ref([
  { value: NetworkingMethod.PublicServer, label: () => t('public_server') },
  { value: NetworkingMethod.Manual, label: () => t('manual') },
  { value: NetworkingMethod.Standalone, label: () => t('standalone') },
])

const networkStore = useNetworkStore()
const curNetwork = computed(() => {
  if (props.instanceId) {
    // console.log('instanceId', props.instanceId)
    const c = networkStore.networkList.find(n => n.instance_id === props.instanceId)
    if (c !== undefined)
      return c
  }

  return networkStore.curNetwork
})

const protos: { [proto: string]: number } = { tcp: 11010, udp: 11010, wg: 11011, ws: 11011, wss: 11012 }

function searchUrlSuggestions(e: { query: string }): string[] {
  const query = e.query
  const ret = []
  // if query match "^\w+:.*", then no proto prefix
  if (query.match(/^\w+:.*/)) {
    // if query is a valid url, then add to suggestions
    try {
      new URL(query)
      ret.push(query)
    }
    catch (e) {}
  }
  else {
    for (const proto in protos) {
      let item = `${proto}://${query}`
      // if query match ":\d+$", then no port suffix
      if (!query.match(/:\d+$/)) {
        item += `:${protos[proto]}`
      }
      ret.push(item)
    }
  }

  return ret
}

const publicServerSuggestions = ref([''])

function searchPresetPublicServers(e: { query: string }) {
  const presetPublicServers = [
    'tcp://public.easytier.top:11010',
  ]

  const query = e.query
  // if query is sub string of presetPublicServers, add to suggestions
  let ret = presetPublicServers.filter(item => item.includes(query))
  // add additional suggestions
  if (query.length > 0) {
    ret = ret.concat(searchUrlSuggestions(e))
  }

  publicServerSuggestions.value = ret
}

const peerSuggestions = ref([''])

function searchPeerSuggestions(e: { query: string }) {
  peerSuggestions.value = searchUrlSuggestions(e)
}

const listenerSuggestions = ref([''])

function searchListenerSuggestiong(e: { query: string }) {
  const ret = []

  for (const proto in protos) {
    let item = `${proto}://0.0.0.0:`
    // if query is a number, use it as port
    if (e.query.match(/^\d+$/)) {
      item += e.query
    }
    else {
      item += protos[proto]
    }

    if (item.includes(e.query)) {
      ret.push(item)
    }
  }

  if (ret.length === 0) {
    ret.push(e.query)
  }

  listenerSuggestions.value = ret
}

function validateHostname() {
  if (curNetwork.value.hostname) {
    // eslint no-useless-escape
    let name = curNetwork.value.hostname!.replaceAll(/[^\u4E00-\u9FA5a-z0-9\-]*/gi, '')
    if (name.length > 32)
      name = name.substring(0, 32)

    if (curNetwork.value.hostname !== name)
      curNetwork.value.hostname = name
  }
}

const osHostname = ref<string>('')

onMounted(async () => {
  osHostname.value = await getOsHostname()
  osHostname.value = await ping('ffdklsajflkdsjl') || ''
})
</script>

<template>
  <div class="flex flex-column h-full">
    <div class="flex flex-column">
      <div class="w-10/12 self-center mb-3">
        <Message severity="warn">
          {{ t('dhcp_experimental_warning') }}
        </Message>
      </div>
      <div class="w-10/12 self-center ">
        <Panel :header="t('basic_settings')">
          <div class="flex flex-column gap-y-2">
            <div class="flex flex-row gap-x-9 flex-wrap">
              <div class="flex flex-column gap-2 basis-5/12 grow">
                <div class="flex align-items-center" for="virtual_ip">
                  <label class="mr-2"> {{ t('virtual_ipv4') }} </label>
                  <Checkbox v-model="curNetwork.dhcp" input-id="virtual_ip_auto" :binary="true" />

                  <label for="virtual_ip_auto" class="ml-2">
                    {{ t('virtual_ipv4_dhcp') }}
                  </label>
                </div>
                <InputGroup>
                  <InputText
                    id="virtual_ip" v-model="curNetwork.virtual_ipv4" :disabled="curNetwork.dhcp"
                    aria-describedby="virtual_ipv4-help"
                  />
                  <InputGroupAddon>
                    <span>/24</span>
                  </InputGroupAddon>
                </InputGroup>
              </div>
            </div>

            <div class="flex flex-row gap-x-9 flex-wrap">
              <div class="flex flex-column gap-2 basis-5/12 grow">
                <label for="network_name">{{ t('network_name') }}</label>
                <InputText id="network_name" v-model="curNetwork.network_name" aria-describedby="network_name-help" />
              </div>
              <div class="flex flex-column gap-2 basis-5/12 grow">
                <label for="network_secret">{{ t('network_secret') }}</label>
                <InputText
                  id="network_secret" v-model="curNetwork.network_secret"
                  aria-describedby="network_secret-help"
                />
              </div>
            </div>

            <div class="flex flex-row gap-x-9 flex-wrap">
              <div class="flex flex-column gap-2 basis-5/12 grow">
                <label for="nm">{{ t('networking_method') }}</label>
                <SelectButton v-model="curNetwork.networking_method" :options="networking_methods" :option-label="(v) => v.label()" option-value="value" />
                <div class="items-center flex flex-row p-fluid gap-x-1">
                  <AutoComplete
                    v-if="curNetwork.networking_method === NetworkingMethod.Manual" id="chips"
                    v-model="curNetwork.peer_urls" :placeholder="t('chips_placeholder', ['tcp://8.8.8.8:11010'])"
                    class="grow" multiple fluid :suggestions="peerSuggestions" @complete="searchPeerSuggestions"
                  />

                  <AutoComplete
                    v-if="curNetwork.networking_method === NetworkingMethod.PublicServer" v-model="curNetwork.public_server_url"
                    :suggestions="publicServerSuggestions" :virtual-scroller-options="{ itemSize: 38 }" class="grow" dropdown :complete-on-focus="true"
                    @complete="searchPresetPublicServers"
                  />
                </div>
              </div>
            </div>
          </div>
        </Panel>

        <Divider />

        <Panel :header="t('advanced_settings')" toggleable collapsed>
          <div class="flex flex-column gap-y-2">
            <div class="flex flex-row gap-x-9 flex-wrap">
              <div class="flex flex-column gap-2 basis-5/12 grow">
                <div class="flex align-items-center">
                  <Checkbox v-model="curNetwork.latency_first" input-id="use_latency_first" :binary="true" />
                  <label for="use_latency_first" class="ml-2"> {{ t('use_latency_first') }} </label>
                </div>
              </div>
            </div>

            <div class="flex flex-row gap-x-9 flex-wrap">
              <div class="flex flex-column gap-2 basis-5/12 grow">
                <label for="hostname">{{ t('hostname') }}</label>
                <InputText
                  id="hostname" v-model="curNetwork.hostname" aria-describedby="hostname-help" :format="true"
                  :placeholder="t('hostname_placeholder', [osHostname])" @blur="validateHostname"
                />
              </div>
            </div>

            <div class="flex flex-row gap-x-9 flex-wrap w-full">
              <div class="flex flex-column gap-2 grow p-fluid">
                <label for="username">{{ t('proxy_cidrs') }}</label>
                <Chips
                  id="chips" v-model="curNetwork.proxy_cidrs"
                  :placeholder="t('chips_placeholder', ['10.0.0.0/24'])" separator=" " class="w-full"
                />
              </div>
            </div>

            <div class="flex flex-row gap-x-9 flex-wrap ">
              <div class="flex flex-column gap-2 grow">
                <label for="username">VPN Portal</label>
                <ToggleButton
                  v-model="curNetwork.enable_vpn_portal" on-icon="pi pi-check" off-icon="pi pi-times"
                  :on-label="t('off_text')" :off-label="t('on_text')" class="w-48"
                />
                <div v-if="curNetwork.enable_vpn_portal" class="items-center flex flex-row gap-x-4">
                  <div class="min-w-64">
                    <InputGroup>
                      <InputText
                        v-model="curNetwork.vpn_portal_client_network_addr"
                        :placeholder="t('vpn_portal_client_network')"
                      />
                      <InputGroupAddon>
                        <span>/{{ curNetwork.vpn_portal_client_network_len }}</span>
                      </InputGroupAddon>
                    </InputGroup>

                    <InputNumber
                      v-model="curNetwork.vpn_portal_listen_port" :allow-empty="false"
                      :format="false" :min="0" :max="65535" class="w-8" fluid
                    />
                  </div>
                </div>
              </div>
            </div>

            <div class="flex flex-row gap-x-9 flex-wrap">
              <div class="flex flex-column gap-2 grow p-fluid">
                <label for="listener_urls">{{ t('listener_urls') }}</label>
                <AutoComplete
                  id="listener_urls" v-model="curNetwork.listener_urls"
                  :suggestions="listenerSuggestions" class="w-full" dropdown :complete-on-focus="true"
                  :placeholder="t('chips_placeholder', ['tcp://1.1.1.1:11010'])"
                  multiple @complete="searchListenerSuggestiong"
                />
              </div>
            </div>

            <div class="flex flex-row gap-x-9 flex-wrap">
              <div class="flex flex-column gap-2 basis-5/12 grow">
                <label for="rpc_port">{{ t('rpc_port') }}</label>
                <InputNumber
                  id="rpc_port" v-model="curNetwork.rpc_port" aria-describedby="rpc_port-help"
                  :format="false" :min="0" :max="65535"
                />
              </div>
            </div>

            <div class="flex flex-row gap-x-9 flex-wrap">
              <div class="flex flex-column gap-2 basis-5/12 grow">
                <label for="dev_name">{{ t('dev_name') }}</label>
                <InputText
                  id="dev_name" v-model="curNetwork.dev_name" aria-describedby="dev_name-help" :format="true"
                  :placeholder="t('dev_name_placeholder')"
                />
              </div>
            </div>
          </div>
        </Panel>

        <div class="flex pt-4 justify-content-center">
          <Button
            :label="t('run_network')" icon="pi pi-arrow-right" icon-pos="right" :disabled="configInvalid"
            @click="$emit('runNetwork', curNetwork)"
          />
        </div>
      </div>
    </div>
  </div>
</template>
