(function () {
  "use strict";

  const dataService = window.TarotDataService || {};

  const {
    DAY_IN_MS,
    getDateKey,
    getDecanForDate,
    getMoonPhaseName,
    calcPlanetaryHoursForDayAndLocation
  } = window.TarotCalc;
  const nowUiHelpers = window.NowUiHelpers || {};

  if (
    typeof nowUiHelpers.findNextDecanTransition !== "function"
    || typeof nowUiHelpers.findNextMoonPhaseTransition !== "function"
    || typeof nowUiHelpers.formatCountdown !== "function"
    || typeof nowUiHelpers.getSignStartDate !== "function"
    || typeof nowUiHelpers.getDisplayTarotName !== "function"
    || typeof nowUiHelpers.setNowCardImage !== "function"
    || typeof nowUiHelpers.renderNowPlanetPositions !== "function"
    || typeof nowUiHelpers.updateNowStats !== "function"
  ) {
    throw new Error("NowUiHelpers module must load before ui-now.js");
  }
  
  let moonCountdownCache = null;
  let decanCountdownCache = null;

  function joinSabianPhrases(phrases) {
    const parts = (Array.isArray(phrases) ? phrases : [])
      .map((phrase) => String(phrase || "").trim())
      .filter(Boolean);

    if (!parts.length) {
      return "--";
    }

    return parts.join(" ");
  }

  function renderNowStatsFromSnapshot(elements, stats) {
    if (elements.nowStatsPlanetsEl) {
      nowUiHelpers.renderNowPlanetPositions(
        elements.nowStatsPlanetsEl,
        Array.isArray(stats?.planetPositions) ? stats.planetPositions : []
      );
    }

    if (elements.nowStatsSabianEl) {
      const sunSabianSymbol = stats?.sunSabianSymbol || null;
      const moonSabianSymbol = stats?.moonSabianSymbol || null;
      elements.nowStatsSabianEl.textContent = joinSabianPhrases([
        moonSabianSymbol?.phrase,
        sunSabianSymbol?.phrase
      ]);
    }
  }

  function applyNowSnapshot(elements, snapshot, timeFormat) {
    const timestamp = snapshot?.timestamp ? new Date(snapshot.timestamp) : new Date();
    const dayKey = String(snapshot?.dayKey || getDateKey(timestamp));
    const currentHour = snapshot?.currentHour || null;

    if (currentHour?.planet) {
      elements.nowHourEl.textContent = `${currentHour.planet.symbol} ${currentHour.planet.name}`;
      if (elements.nowHourTarotEl) {
        const hourCardName = currentHour.planet?.tarot?.majorArcana || "";
        const hourTrumpNumber = currentHour.planet?.tarot?.number;
        elements.nowHourTarotEl.textContent = hourCardName
          ? nowUiHelpers.getDisplayTarotName(hourCardName, hourTrumpNumber)
          : "--";
      }

      elements.nowCountdownEl.textContent = nowUiHelpers.formatCountdown(currentHour.msRemaining, timeFormat);

      if (elements.nowHourNextEl) {
        const nextPlanet = currentHour.nextHourPlanet;
        elements.nowHourNextEl.textContent = nextPlanet
          ? `> ${nextPlanet.name}`
          : "> --";
      }

      nowUiHelpers.setNowCardImage(
        elements.nowHourCardEl,
        currentHour.planet?.tarot?.majorArcana,
        "Current planetary hour card",
        currentHour.planet?.tarot?.number
      );
    } else {
      elements.nowHourEl.textContent = "--";
      elements.nowCountdownEl.textContent = "--";
      if (elements.nowHourTarotEl) {
        elements.nowHourTarotEl.textContent = "--";
      }
      if (elements.nowHourNextEl) {
        elements.nowHourNextEl.textContent = "> --";
      }
      nowUiHelpers.setNowCardImage(elements.nowHourCardEl, null, "Current planetary hour card");
    }

    const moon = snapshot?.moon || null;
    const illuminationFraction = Number(moon?.illuminationFraction || 0);
    const moonTarot = moon?.tarot?.majorArcana || "The High Priestess";
    elements.nowMoonEl.textContent = moon
      ? `${moon.phase} (${Math.round(illuminationFraction * 100)}%)`
      : "--";
    elements.nowMoonTarotEl.textContent = moon
      ? nowUiHelpers.getDisplayTarotName(moonTarot, moon?.tarot?.number)
      : "--";
    nowUiHelpers.setNowCardImage(
      elements.nowMoonCardEl,
      moon?.tarot?.majorArcana,
      "Current moon phase card",
      moon?.tarot?.number
    );

    if (elements.nowMoonCountdownEl) {
      if (moon?.countdown) {
        elements.nowMoonCountdownEl.textContent = nowUiHelpers.formatCountdown(moon.countdown.msRemaining, timeFormat);
        if (elements.nowMoonNextEl) {
          elements.nowMoonNextEl.textContent = `> ${moon.countdown.nextPhase}`;
        }
      } else {
        elements.nowMoonCountdownEl.textContent = "--";
        if (elements.nowMoonNextEl) {
          elements.nowMoonNextEl.textContent = "> --";
        }
      }
    }

    const decanInfo = snapshot?.decan || null;
    if (decanInfo?.sign) {
      const signMajorName = nowUiHelpers.getDisplayTarotName(
        decanInfo.sign?.tarot?.majorArcana,
        decanInfo.sign?.tarot?.number
      );
      const signDegree = Number.isFinite(Number(decanInfo.signDegree))
        ? Number(decanInfo.signDegree).toFixed(1)
        : "0.0";

      elements.nowDecanEl.textContent = `${decanInfo.sign.symbol} ${decanInfo.sign.name} · ${signMajorName} (${signDegree}°)`;

      if (decanInfo.decan?.tarotMinorArcana) {
        elements.nowDecanTarotEl.textContent = nowUiHelpers.getDisplayTarotName(decanInfo.decan.tarotMinorArcana);
        nowUiHelpers.setNowCardImage(elements.nowDecanCardEl, decanInfo.decan.tarotMinorArcana, "Current decan card");
      } else {
        const signTarotName = decanInfo.sign?.tarot?.majorArcana || "--";
        elements.nowDecanTarotEl.textContent = signTarotName === "--"
          ? "--"
          : nowUiHelpers.getDisplayTarotName(signTarotName, decanInfo.sign?.tarot?.number);
        nowUiHelpers.setNowCardImage(
          elements.nowDecanCardEl,
          decanInfo.sign?.tarot?.majorArcana,
          "Current decan card",
          decanInfo.sign?.tarot?.number
        );
      }

      if (elements.nowDecanCountdownEl) {
        if (decanInfo.countdown) {
          elements.nowDecanCountdownEl.textContent = nowUiHelpers.formatCountdown(decanInfo.countdown.msRemaining, timeFormat);
          if (elements.nowDecanNextEl) {
            elements.nowDecanNextEl.textContent = `> ${nowUiHelpers.getDisplayTarotName(decanInfo.countdown.nextLabel)}`;
          }
        } else {
          elements.nowDecanCountdownEl.textContent = "--";
          if (elements.nowDecanNextEl) {
            elements.nowDecanNextEl.textContent = "> --";
          }
        }
      }
    } else {
      elements.nowDecanEl.textContent = "--";
      elements.nowDecanTarotEl.textContent = "--";
      nowUiHelpers.setNowCardImage(elements.nowDecanCardEl, null, "Current decan card");
      if (elements.nowDecanCountdownEl) {
        elements.nowDecanCountdownEl.textContent = "--";
      }
      if (elements.nowDecanNextEl) {
        elements.nowDecanNextEl.textContent = "> --";
      }
    }

    renderNowStatsFromSnapshot(elements, snapshot?.stats || {});

    return {
      dayKey,
      skyRefreshKey: String(snapshot?.skyRefreshKey || "")
    };
  }

  async function updateNowPanel(referenceData, geo, elements, timeFormat = "minutes") {
    if (!referenceData || !geo || !elements) {
      return { dayKey: getDateKey(new Date()), skyRefreshKey: "" };
    }

    const snapshot = await dataService.fetchNowSnapshot?.(geo, new Date());
    return applyNowSnapshot(elements, snapshot || {}, timeFormat);
  }

  window.TarotNowUi = {
    updateNowPanel
  };
})();