import type { Database } from "@/lib/types";
import { listPleskDomains, listPleskSubscriptions } from "@/lib/plesk/client";

type SupabaseLike = any;

type SyncResult = {
  instanceId: string;
  agencyId: string;
  skipped: boolean;
  reason?: string;
  subscriptionsUpserted: number;
  domainsUpserted: number;
};

type InstanceRow = Pick<
  Database["public"]["Tables"]["plesk_instances"]["Row"],
  | "id"
  | "agency_id"
  | "base_url"
  | "auth_type"
  | "encrypted_secret"
  | "last_connected_at"
>;

const MIN_INTERVAL_MS = 3 * 60 * 1000;

export async function syncPleskInstance(
  supabase: SupabaseLike,
  instance: InstanceRow,
  actorUserId?: string | null,
  action = "sync",
): Promise<SyncResult> {
  const startedAtIso = new Date().toISOString();

  await supabase
    .from("plesk_instances")
    .update({
      status: "syncing",
      last_sync_error: null,
    })
    .eq("id", instance.id)
    .eq("agency_id", instance.agency_id);

  const last = instance.last_connected_at
    ? new Date(instance.last_connected_at).getTime()
    : 0;
  if (last && Date.now() - last < MIN_INTERVAL_MS) {
    await supabase
      .from("plesk_instances")
      .update({
        status: "connected",
        last_sync_at: startedAtIso,
        last_sync_status: "skipped",
        last_sync_error: "recently_synced",
      })
      .eq("id", instance.id)
      .eq("agency_id", instance.agency_id);

    return {
      instanceId: instance.id,
      agencyId: instance.agency_id,
      skipped: true,
      reason: "recently_synced",
      subscriptionsUpserted: 0,
      domainsUpserted: 0,
    };
  }

  try {
    const [subscriptionsRaw, domainsRaw] = await Promise.all([
      listPleskSubscriptions({
        baseUrl: instance.base_url,
        authType: instance.auth_type,
        encryptedSecret: instance.encrypted_secret,
      }),
      listPleskDomains({
        baseUrl: instance.base_url,
        authType: instance.auth_type,
        encryptedSecret: instance.encrypted_secret,
      }),
    ]);

    const subscriptionsForUpsert = subscriptionsRaw
      .map((item: any) => {
        const sourceId = item?.id ?? item?.guid ?? item?.subscription_id;
        if (!sourceId) return null;
        return {
          agency_id: instance.agency_id,
          plesk_instance_id: instance.id,
          plesk_subscription_id: String(sourceId),
          name: item?.name ? String(item.name) : null,
          status: item?.status ? String(item.status) : null,
          owner_login: item?.owner_login
            ? String(item.owner_login)
            : item?.owner?.login
              ? String(item.owner.login)
              : null,
          plan_name: item?.plan_name
            ? String(item.plan_name)
            : item?.service_plan?.name
              ? String(item.service_plan.name)
              : null,
        };
      })
      .filter(Boolean) as Array<Record<string, unknown>>;

    if (subscriptionsForUpsert.length > 0) {
      const { error } = await supabase
        .from("plesk_subscriptions")
        .upsert(subscriptionsForUpsert, {
          onConflict: "agency_id,plesk_subscription_id",
        });
      if (error) throw new Error(error.message);
    }

    const { data: localSubscriptions, error: localSubscriptionsError } =
      await supabase
        .from("plesk_subscriptions")
        .select("id, plesk_subscription_id, status")
        .eq("agency_id", instance.agency_id)
        .eq("plesk_instance_id", instance.id);

    if (localSubscriptionsError) {
      throw new Error(localSubscriptionsError.message);
    }

    const subscriptionByExternalId = new Map<
      string,
      { id: string; status: string | null }
    >(
      (localSubscriptions ?? [])
        .filter((row: any) => row?.plesk_subscription_id && row?.id)
        .map((row: any) => [
          String(row.plesk_subscription_id),
          {
            id: String(row.id),
            status: row?.status ? String(row.status) : null,
          },
        ]),
    );

    const domainsForUpsert = domainsRaw
      .map((item: any) => {
        const domainId = item?.id ?? item?.guid ?? item?.name;
        const domainName = item?.name ?? item?.domain_name ?? item?.domain;
        const subExternalId =
          item?.subscription?.id ?? item?.subscription_id ?? item?.webspace_id;
        const externalSubscriptionId = subExternalId
          ? String(subExternalId)
          : null;
        const localSubscription = externalSubscriptionId
          ? subscriptionByExternalId.get(externalSubscriptionId)
          : undefined;
        const rawCreated = item?.created_at ?? item?.created;
        const sourceCreatedAt = rawCreated
          ? new Date(String(rawCreated)).toISOString()
          : null;
        const aliasesCount =
          typeof item?.aliases_count === "number"
            ? item.aliases_count
            : Array.isArray(item?.aliases)
              ? item.aliases.length
              : null;

        if (!domainId || !domainName) return null;

        return {
          agency_id: instance.agency_id,
          plesk_instance_id: instance.id,
          subscription_id: localSubscription?.id ?? null,
          external_subscription_id: externalSubscriptionId,
          plesk_domain_id: String(domainId),
          domain_name: String(domainName),
          status: localSubscription?.status ?? "unknown",
          hosting_type: item?.hosting_type ? String(item.hosting_type) : null,
          source_created_at: sourceCreatedAt,
          aliases_count: aliasesCount,
        };
      })
      .filter(Boolean) as Array<Record<string, unknown>>;

    if (domainsForUpsert.length > 0) {
      const { error } = await supabase
        .from("plesk_domains")
        .upsert(domainsForUpsert, {
          onConflict: "agency_id,plesk_domain_id",
        });
      if (error) throw new Error(error.message);
    }

    await supabase
      .from("plesk_instances")
      .update({
        last_connected_at: new Date().toISOString(),
        status: "connected",
        error_message: null,
        last_sync_at: startedAtIso,
        last_sync_status: "success",
        last_sync_error: null,
        last_sync_subscriptions: subscriptionsForUpsert.length,
        last_sync_domains: domainsForUpsert.length,
      })
      .eq("id", instance.id)
      .eq("agency_id", instance.agency_id);

    await supabase.from("actions_log").insert({
      agency_id: instance.agency_id,
      actor_user_id: actorUserId ?? null,
      target_type: "plesk_instance",
      target_id: instance.id,
      action,
      status: "success",
      metadata: {
        subscriptions_seen: subscriptionsRaw.length,
        domains_seen: domainsRaw.length,
      },
    });

    return {
      instanceId: instance.id,
      agencyId: instance.agency_id,
      skipped: false,
      subscriptionsUpserted: subscriptionsForUpsert.length,
      domainsUpserted: domainsForUpsert.length,
    };
  } catch (error) {
    const message =
      error instanceof Error ? error.message.slice(0, 1000) : "Sync failed";

    await supabase
      .from("plesk_instances")
      .update({
        status: "error",
        error_message: message,
        last_sync_at: startedAtIso,
        last_sync_status: "failed",
        last_sync_error: message,
      })
      .eq("id", instance.id)
      .eq("agency_id", instance.agency_id);

    throw error;
  }
}