<script setup>
import AppLayout from "@/Layouts/AppLayout.vue";
import { Link, router } from "@inertiajs/vue3";
import { onMounted, onUnmounted, ref, computed } from "vue";
import {
  Card,
  CardContent,
  CardHeader,
  CardTitle,
  CardDescription,
} from "@/Components/ui/card";
import { Button } from "@/Components/ui/button";
import { Badge } from "@/Components/ui/badge";
import { Separator } from "@/Components/ui/separator";
import DataTableNew2 from "@/Components/DataTable/DataTableNew2.vue";
import Pagination from "@/Components/Pagination.vue";
import {
  PackageIcon,
  ArrowLeftIcon,
  PlayIcon,
  XCircleIcon,
  RefreshCwIcon,
  CopyIcon,
} from "lucide-vue-next";
import AppCard from "@/Components/app/ui/card/AppCard.vue";

const props = defineProps({
  package: { type: Object, required: true },
  items: { type: Object, required: true },
  preview: { type: [Object, null], default: null },
});

const columns = [
  { accessorKey: "id", header: "ID" },
  { accessorKey: "target", header: "Prejemnik" },
  { accessorKey: "message", header: "Sporočilo" },
  { accessorKey: "status", header: "Status" },
  { accessorKey: "last_error", header: "Napaka" },
  { accessorKey: "provider_message_id", header: "Provider ID" },
  { accessorKey: "cost", header: "Cena" },
  { accessorKey: "currency", header: "Valuta" },
];

function getStatusVariant(status) {
  if (["queued", "processing"].includes(status)) return "secondary";
  if (status === "sent") return "default";
  if (status === "failed") return "destructive";
  return "outline";
}

const refreshing = ref(false);
let timer = null;

const isRunning = computed(() => ["queued", "running"].includes(props.package.status));

// Derive a summary of payload/template/body from the first item on the page.
// Assumption: payload is the same across items in a package (both flows use a common payload).
const firstItem = computed(() =>
  props.items?.data && props.items.data.length ? props.items.data[0] : null
);
const firstPayload = computed(() =>
  firstItem.value ? firstItem.value.payload_json || {} : {}
);
const messageBody = computed(() => {
  const b = firstPayload.value?.body;
  if (typeof b === "string") {
    const t = b.trim();
    return t.length ? t : null;
  }
  return null;
});
const payloadSummary = computed(() => ({
  profile_id: firstPayload.value?.profile_id ?? null,
  sender_id: firstPayload.value?.sender_id ?? null,
  template_id: firstPayload.value?.template_id ?? null,
  delivery_report: !!firstPayload.value?.delivery_report,
}));

function reload() {
  refreshing.value = true;
  router.reload({
    only: ["package", "items"],
    onFinish: () => (refreshing.value = false),
    preserveScroll: true,
    preserveState: true,
  });
}

function dispatchPkg() {
  router.post(
    route("packages.dispatch", props.package.id),
    {},
    { onSuccess: reload }
  );
}
function cancelPkg() {
  router.post(
    route("packages.cancel", props.package.id),
    {},
    { onSuccess: reload }
  );
}

onMounted(() => {
  if (isRunning.value) {
    timer = setInterval(reload, 3000);
  }
});
onUnmounted(() => {
  if (timer) clearInterval(timer);
});

async function copyText(text) {
  if (!text) return;
  try {
    await navigator.clipboard.writeText(text);
  } catch (e) {
    // Fallback for older browsers
    const ta = document.createElement("textarea");
    ta.value = text;
    ta.style.position = "fixed";
    ta.style.opacity = "0";
    document.body.appendChild(ta);
    ta.focus();
    ta.select();
    try {
      document.execCommand("copy");
    } catch (_) {}
    document.body.removeChild(ta);
  }
}
</script>

<template>
  <AppLayout :title="`Paket #${package.id}`">
    <Card class="mb-4">
      <CardHeader>
        <div class="flex items-center justify-between">
          <div class="flex items-center gap-3">
            <PackageIcon class="h-5 w-5 text-muted-foreground" />
            <div>
              <CardTitle>Paket #{{ package.id }}</CardTitle>
              <CardDescription class="font-mono"
                >UUID: {{ package.uuid }}</CardDescription
              >
            </div>
          </div>
          <div class="flex items-center gap-2">
            <Button variant="ghost" size="sm" as-child>
              <Link :href="route('packages.index')">
                <ArrowLeftIcon class="h-4 w-4 mr-2" />
                Nazaj
              </Link>
            </Button>
            <Button
              v-if="['draft', 'failed'].includes(package.status)"
              @click="dispatchPkg"
              size="sm"
            >
              <PlayIcon class="h-4 w-4 mr-2" />
              Zaženi
            </Button>
            <Button v-if="isRunning" @click="cancelPkg" variant="destructive" size="sm">
              <XCircleIcon class="h-4 w-4 mr-2" />
              Prekliči
            </Button>
            <Button v-if="!isRunning" @click="reload" variant="outline" size="sm">
              <RefreshCwIcon class="h-4 w-4" />
            </Button>
          </div>
        </div>
      </CardHeader>
    </Card>

    <div class="grid sm:grid-cols-4 gap-3 mb-4">
      <Card>
        <CardHeader class="pb-2">
          <CardDescription>Status</CardDescription>
          <CardTitle class="text-xl uppercase">{{ package.status }}</CardTitle>
        </CardHeader>
      </Card>
      <Card>
        <CardHeader class="pb-2">
          <CardDescription>Skupaj</CardDescription>
          <CardTitle class="text-xl">{{ package.total_items }}</CardTitle>
        </CardHeader>
      </Card>
      <Card>
        <CardHeader class="pb-2">
          <CardDescription>Poslano</CardDescription>
          <CardTitle class="text-xl text-emerald-700">{{ package.sent_count }}</CardTitle>
        </CardHeader>
      </Card>
      <Card>
        <CardHeader class="pb-2">
          <CardDescription>Neuspešno</CardDescription>
          <CardTitle class="text-xl text-rose-700">{{ package.failed_count }}</CardTitle>
        </CardHeader>
      </Card>
    </div>

    <!-- Payload / Message preview -->
    <div class="mb-4 grid gap-3 sm:grid-cols-2">
      <Card>
        <CardHeader>
          <CardTitle class="text-base">Sporočilo</CardTitle>
        </CardHeader>
        <CardContent>
          <template v-if="preview && preview.content">
            <div class="text-sm whitespace-pre-wrap mb-3">{{ preview.content }}</div>
            <Button @click="copyText(preview.content)" size="sm" variant="outline">
              <CopyIcon class="h-3.5 w-3.5 mr-2" />
              Kopiraj
            </Button>
            <p
              v-if="preview.source === 'template' && preview.template"
              class="mt-3 text-xs text-muted-foreground"
            >
              Predloga: {{ preview.template.name }} (#{{ preview.template.id }})
            </p>
          </template>
          <template v-else>
            <div v-if="messageBody" class="text-sm whitespace-pre-wrap">
              {{ messageBody }}
            </div>
            <div v-else class="text-sm text-muted-foreground">
              <template v-if="payloadSummary.template_id">
                Uporabljena bo predloga #{{ payloadSummary.template_id }}.
              </template>
              <template v-else> Vsebina sporočila ni določena. </template>
            </div>
          </template>
        </CardContent>
      </Card>
      <Card>
        <CardHeader>
          <CardTitle class="text-base">Meta / Nastavitve pošiljanja</CardTitle>
        </CardHeader>
        <CardContent>
          <dl class="text-sm grid grid-cols-3 gap-y-2">
            <dt class="col-span-1 text-muted-foreground">Profil</dt>
            <dd class="col-span-2">{{ payloadSummary.profile_id ?? "—" }}</dd>
            <dt class="col-span-1 text-muted-foreground">Pošiljatelj</dt>
            <dd class="col-span-2">{{ payloadSummary.sender_id ?? "—" }}</dd>
            <dt class="col-span-1 text-muted-foreground">Predloga</dt>
            <dd class="col-span-2">{{ payloadSummary.template_id ?? "—" }}</dd>
            <dt class="col-span-1 text-muted-foreground">Delivery report</dt>
            <dd class="col-span-2">{{ payloadSummary.delivery_report ? "da" : "ne" }}</dd>
          </dl>
          <div
            v-if="
              package.meta && (package.meta.source || package.meta.skipped !== undefined)
            "
            class="mt-3 pt-3 border-t text-xs text-muted-foreground"
          >
            <span v-if="package.meta.source" class="mr-3"
              >Vir: {{ package.meta.source }}</span
            >
            <span v-if="package.meta.skipped !== undefined"
              >Preskočeno: {{ package.meta.skipped }}</span
            >
          </div>
        </CardContent>
      </Card>
    </div>

    <AppCard
      title=""
      padding="none"
      class="p-0! gap-0"
      header-class="py-3! px-4 gap-0 text-muted-foreground"
      body-class=""
    >
      <template #header>
        <div class="flex items-center gap-2">
          <PackageIcon size="18" />
          <CardTitle class="uppercase">Uvozi</CardTitle>
        </div>
      </template>
      <DataTableNew2
        :columns="columns"
        :data="items.data"
        :meta="items"
        route-name="packages.show"
        :route-params="{ id: package.id }"
      >
        <template #cell-target="{ row }">
          <span class="text-sm">{{
            (row.target_json && row.target_json.number) || "—"
          }}</span>
        </template>

        <template #cell-message="{ row }">
          <div class="flex items-start gap-2">
            <div class="text-xs max-w-[420px] line-clamp-2 whitespace-pre-wrap">
              {{ row.rendered_preview || "—" }}
            </div>
            <Button
              v-if="row.rendered_preview"
              @click="copyText(row.rendered_preview)"
              size="sm"
              variant="ghost"
            >
              <CopyIcon class="h-3.5 w-3.5" />
            </Button>
          </div>
        </template>

        <template #cell-status="{ row }">
          <Badge :variant="getStatusVariant(row.status)">{{ row.status }}</Badge>
        </template>

        <template #cell-last_error="{ row }">
          <span class="text-xs text-rose-700">{{ row.last_error ?? "—" }}</span>
        </template>

        <template #cell-provider_message_id="{ row }">
          <span class="font-mono text-xs text-muted-foreground">{{
            row.provider_message_id ?? "—"
          }}</span>
        </template>

        <template #cell-cost="{ row }">
          <span class="text-sm">{{ row.cost ?? "—" }}</span>
        </template>

        <template #cell-currency="{ row }">
          <span class="text-sm">{{ row.currency ?? "—" }}</span>
        </template>
      </DataTableNew2>
    </AppCard>

    <div v-if="refreshing" class="mt-2 text-xs text-muted-foreground">
      Osveževanje ...
    </div>
  </AppLayout>
</template>
