import { getAdminActiveUserKpiCounts, getAdminTenantKpiCounts } from "@toolctrl/db/kpi.server";
import { Stat } from "~/application/dtos/stats/Stat";
import currencies from "~/application/pricing/currencies";
import { getStatChangeType } from "../app/DashboardUtils";
import NumberUtils from "../shared/NumberUtils";
import { getMrr } from "./.server/subscriptionService";
import { promiseHash } from "../promises/promiseHash";
import { adminPath } from "~/utils/app/CanonicalUrlUtils";

type AdminDashboardStatsOptions = {
  t: (key: string) => string;
  gte?: Date;
};

export async function getAdminDashboardStats({ t, gte }: AdminDashboardStatsOptions): Promise<Stat[]> {
  const { tenantStat, mrrStat, activeUsersStat } = await promiseHash({
    tenantStat: getTenantStat({ t, gte }),
    mrrStat: getMMRStat(t),
    activeUsersStat: getActiveUsersStat({ t, gte }),
  });
  return [tenantStat, mrrStat, activeUsersStat];
}

async function getTenantStat({ t, gte }: AdminDashboardStatsOptions) {
  const { added, total } = await getAdminTenantKpiCounts({ gte });
  const tenantStat: Stat = {
    name: t("admin.kpi.accounts.name"),
    hint: t("admin.kpi.accounts.hint"),
    stat: total.toString(),
    previousStat: (total - added).toString(),
    change: "+" + added.toString(),
    changeType: getStatChangeType(added, total),
    path: adminPath("accounts", { mode: "host-aware" }),
  };
  return tenantStat;
}

async function getMMRStat(t: AdminDashboardStatsOptions["t"]) {
  const defaultCurrency = currencies.find((f) => f.default);
  const currency = defaultCurrency ?? { value: "usd", symbol: "$" };
  const mrr = await getMrr(currency.value);
  const tenantStat: Stat = {
    name: t("admin.kpi.mrr.name"),
    hint: t("admin.kpi.mrr.hint"),
    stat: currency.symbol + NumberUtils.decimalFormat(mrr.total),
    previousStat: t("admin.kpi.mrr.previousStat").replace("{{0}}", NumberUtils.intFormat(mrr.count)),
  };
  return tenantStat;
}

async function getActiveUsersStat({ t, gte }: AdminDashboardStatsOptions) {
  const { added, total } = await getAdminActiveUserKpiCounts({ gte });
  const activeUsersStat: Stat = {
    name: t("admin.kpi.activeUsers.name"),
    hint: t("admin.kpi.activeUsers.hint"),
    stat: total.toString(),
    previousStat: (total - added).toString(),
    change: "+" + added.toString(),
    changeType: getStatChangeType(added, total),
  };
  return activeUsersStat;
}