import { calculateMissedPrayers } from "../utils/hijri.js";

const PRAYERS = [
  { id: "fajr", name: "SABAH", arabic: "Fecr" },
  { id: "dhuhr", name: "ÖĞLE", arabic: "Zuhur" },
  { id: "asr", name: "İKİNDİ", arabic: "Asr" },
  { id: "maghrib", name: "AKŞAM", arabic: "Mağrib" },
  { id: "isha", name: "YATSI", arabic: "İşa" },
  { id: "vitr", name: "VİTİR", arabic: "Vitr" },
];

export function renderKaza(pb) {
  const user = pb.authStore.model;
  const birthDate = user?.birthDate || user?.birthdate;
  const gender = user?.gender || "male";

  const html = `
    <div class="relative bg-slate-900/80 border border-white/10 p-6 md:p-8 rounded-3xl shadow-2xl max-w-4xl w-full h-[85vh] flex flex-col overflow-hidden">
      <button id="closeBtn" class="absolute top-4 right-4 bg-rose-500/20 hover:bg-rose-500/40 text-rose-300 border border-rose-500/30 w-8 h-8 rounded-full flex items-center justify-center font-bold text-xs transition-all">
        ✕
      </button>
      
      <div class="flex items-center gap-3 mb-2">
        <span class="text-3xl">📿</span>
        <div>
          <h2 class="text-2xl font-bold text-white">Kaza Namazı Sayaç & Takip</h2>
          <p class="text-slate-400 text-xs">Hicri takvime göre kaza borcunuzu sabitleyin ve kıldıkça düşürün.</p>
        </div>
      </div>

      ${
        !birthDate
          ? `
        <div class="bg-slate-950/50 border border-white/10 p-6 rounded-2xl my-auto text-center max-w-md mx-auto w-full">
          <h3 class="text-base font-bold text-white mb-2">Doğum Tarihi Gerekli</h3>
          <p class="text-xs text-slate-400 mb-6">Kaza namazı borcunuzu hesaplayabilmemiz için profil bilgilerinizi girin.</p>
          <form id="profileForm" class="space-y-4">
            <div class="text-left">
              <label class="block text-xs text-slate-300 mb-1">Doğum Tarihi ve Saati</label>
              <input type="datetime-local" id="birthDateInput" required class="w-full bg-slate-900 border border-slate-800 rounded-xl px-4 py-2.5 text-white text-sm focus:border-indigo-500 focus:outline-none" />
            </div>
            <div class="text-left">
              <label class="block text-xs text-slate-300 mb-1">Cinsiyet</label>
              <select id="genderInput" required class="w-full bg-slate-900 border border-slate-800 rounded-xl px-4 py-2.5 text-white text-sm focus:border-indigo-500 focus:outline-none">
                <option value="male">Erkek</option>
                <option value="female">Kadın</option>
              </select>
            </div>
            <button type="submit" class="w-full bg-indigo-600 hover:bg-indigo-500 text-white py-2.5 rounded-xl text-sm font-semibold transition-all">
              Kaydet
            </button>
          </form>
        </div>
      `
          : `
        <!-- HESAPLAMA VE İLERLEME BARI -->
        <div class="bg-slate-950/60 border border-white/10 p-5 rounded-2xl mb-6 mt-2 flex flex-col gap-4">
          <div class="flex flex-wrap items-center justify-between gap-2 border-b border-white/10 pb-3">
            <div>
              <h3 class="text-xs font-bold text-indigo-300 uppercase tracking-wider">Kaza Borcu Tanımlama</h3>
              <p class="text-[11px] text-slate-400">Hicri takvime göre kaza borcunuzu hesaplar ve PocketBase'e kaydeder.</p>
            </div>
            <button id="calcAndSaveBtn" class="bg-indigo-600 hover:bg-indigo-500 text-white px-4 py-2 rounded-xl text-xs font-semibold transition-all shadow-md active:scale-95">
              ⚡ Kaza Borçlarını Otomatik Hesapla & PB'ye Kaydet
            </button>
          </div>

          <div>
            <div class="flex items-center justify-between mb-2">
              <span class="text-xs font-bold text-indigo-300 flex items-center gap-1.5">
                <span>📊</span> KAZA BORCU TAMAMLAMA ORANI
              </span>
              <span id="overallPercentage" class="text-sm font-extrabold text-emerald-400">%0 Kılındı</span>
            </div>
            <div class="w-full h-4 bg-slate-900 rounded-full overflow-hidden border border-white/5 p-0.5">
              <div id="overallProgressBar" class="h-full bg-linear-to-r from-indigo-500 via-purple-500 to-emerald-400 rounded-full transition-all duration-700 ease-out" style="width: 0%;"></div>
            </div>
            <div class="flex justify-between items-center text-[11px] text-slate-400 mt-2.5">
              <span>Hesaplanan İlk Borç: <b id="initialTotalText" class="text-slate-300">0</b> vakit</span>
              <span>Kalan Güncel Borç: <b id="totalRemainingText" class="text-amber-400">0</b> vakit</span>
            </div>
          </div>
        </div>

        <!-- VAKİT İLERLEME KARTLARI -->
        <div class="grid grid-cols-2 sm:grid-cols-3 lg:grid-cols-6 gap-3 mb-6">
          ${PRAYERS.map(
            (p) => `
            <div class="bg-slate-950/40 border border-white/10 p-3.5 rounded-2xl text-center relative overflow-hidden group">
              <p class="text-[11px] font-bold text-slate-300 mb-1">${p.name}</p>
              <p class="text-xs text-slate-400">Kalan: <span id="remaining-${p.id}" class="font-extrabold text-amber-300">-</span></p>
              <p class="text-[10px] text-slate-500 mt-0.5">İlk Borç: <span id="initial-${p.id}" class="text-slate-400">0</span></p>
              <div class="w-full bg-slate-800 h-2 rounded-full mt-2.5 overflow-hidden">
                <div id="progress-${p.id}" class="bg-emerald-400 h-full transition-all duration-500" style="width: 0%;"></div>
              </div>
            </div>
          `,
          ).join("")}
        </div>

        <!-- HIZLI SAYAÇ GÜNCELLEME ALANI -->
        <div class="bg-slate-950/40 border border-white/10 p-5 rounded-2xl mb-auto">
          <h3 class="text-xs font-bold text-slate-300 uppercase tracking-wider mb-3">Kaza Kıldım (Borçtan Düş)</h3>
          <form id="addKazaForm" class="flex flex-wrap items-center gap-3">
            <select id="kazaPrayerType" class="bg-slate-900 border border-slate-800 rounded-xl px-4 py-2.5 text-white text-sm focus:outline-none">
              ${PRAYERS.map((p) => `<option value="${p.id}">${p.name}</option>`).join("")}
            </select>
            <input type="number" id="kazaCount" min="1" value="1" required class="w-24 bg-slate-900 border border-slate-800 rounded-xl px-4 py-2.5 text-white text-sm text-center focus:outline-none font-bold" />
            
            <button type="button" id="subtractKazaBtn" class="bg-emerald-600 hover:bg-emerald-500 text-white px-5 py-2.5 rounded-xl text-sm font-semibold transition-all shadow-lg active:scale-95 flex items-center gap-1.5">
              <span>✓</span> Kıldım (Borçtan Düş -)
            </button>
            <button type="button" id="addKazaBtn" class="bg-rose-600/30 hover:bg-rose-600/50 text-rose-300 border border-rose-500/30 px-4 py-2.5 rounded-xl text-sm font-medium transition-all active:scale-95">
              Borç Ekle (+)
            </button>
          </form>
          <p id="kazaMsg" class="text-xs mt-3 hidden"></p>
        </div>
      `
      }
    </div>
  `;

  return {
    html,
    initEvents: (container) => {
      container.querySelector("#closeBtn")?.addEventListener("click", () => {
        window.dispatchEvent(
          new CustomEvent("navigate", { detail: "desktop" }),
        );
      });

      if (!birthDate) {
        container
          .querySelector("#profileForm")
          ?.addEventListener("submit", async (e) => {
            e.preventDefault();
            const bInput = container.querySelector("#birthDateInput").value;
            const gInput = container.querySelector("#genderInput").value;
            try {
              await pb.collection("users").update(pb.authStore.model.id, {
                birthdate: bInput,
                birthDate: bInput,
                gender: gInput,
              });
              pb.authStore.model.birthdate = bInput;
              pb.authStore.model.gender = gInput;
              window.dispatchEvent(
                new CustomEvent("navigate", { detail: "kaza" }),
              );
            } catch (err) {
              alert("Profil kaydedilemedi.");
            }
          });
      } else {
        refreshKazaStats(container, pb, birthDate, gender);

        container
          .querySelector("#calcAndSaveBtn")
          ?.addEventListener("click", async () => {
            if (
              confirm(
                "Kaza borcunuz yeniden hesaplanıp PocketBase'e kaydedilecek. Onaylıyor musunuz?",
              )
            ) {
              const res = await initAndSaveInitialKaza(pb, birthDate, gender);
              if (res.success) {
                await refreshKazaStats(container, pb, birthDate, gender);
                showKazaMsg(
                  container.querySelector("#kazaMsg"),
                  `✓ Borç hesaplandı (${res.days} gün) ve PocketBase'e kaydedildi!`,
                  true,
                );
              } else {
                showKazaMsg(
                  container.querySelector("#kazaMsg"),
                  `Hata: ${res.error}`,
                  false,
                );
              }
            }
          });

        container
          .querySelector("#subtractKazaBtn")
          ?.addEventListener("click", async () => {
            await updateKazaDebt(container, pb, birthDate, gender, -1);
          });

        container
          .querySelector("#addKazaBtn")
          ?.addEventListener("click", async () => {
            await updateKazaDebt(container, pb, birthDate, gender, 1);
          });
      }
    },
  };
}

async function initAndSaveInitialKaza(pb, birthDate, gender) {
  try {
    const calc = calculateMissedPrayers(birthDate, gender, 12);

    if (!calc || calc.days <= 0) {
      return {
        success: false,
        error:
          "Doğum tarihiniz henüz mükellefiyet yaşından (12 Hicri yıl) küçük.",
      };
    }

    const userId = pb.authStore.model.id;
    let userRecord = null;

    try {
      userRecord = await pb
        .collection("kaza_logs")
        .getFirstListItem(`user = "${userId}"`);
    } catch (e) {}

    // PB tarafındaki varsayılan sütunlara (fajr, dhuhr vb.) borcu yazıyoruz
    const initialData = {
      user: userId,
      fajr: calc.fajr,
      dhuhr: calc.dhuhr,
      asr: calc.asr,
      maghrib: calc.maghrib,
      isha: calc.isha,
      vitr: calc.vitr,
    };

    if (userRecord) {
      await pb.collection("kaza_logs").update(userRecord.id, initialData);
    } else {
      await pb.collection("kaza_logs").create(initialData);
    }

    return { success: true, days: calc.days, fajr: calc.fajr };
  } catch (err) {
    console.error("PocketBase Kayıt Hatası:", err);
    return {
      success: false,
      error: err?.message || "PocketBase'e kaydedilemedi.",
    };
  }
}

async function updateKazaDebt(container, pb, birthDate, gender, direction) {
  const prayerId = container.querySelector("#kazaPrayerType").value;
  const countInput = container.querySelector("#kazaCount");
  const countValue = Math.max(1, parseInt(countInput?.value || "1", 10));

  const changeAmount = countValue * direction;
  const msg = container.querySelector("#kazaMsg");

  try {
    const userId = pb.authStore.model.id;
    let userRecord = await pb
      .collection("kaza_logs")
      .getFirstListItem(`user = "${userId}"`);

    if (!userRecord) {
      showKazaMsg(
        msg,
        "Önce 'Kaza Borçlarını Otomatik Hesapla & PB'ye Kaydet' butonuna basmalısınız.",
        false,
      );
      return;
    }

    const currentDebt = userRecord[prayerId] || 0;
    const newDebt = Math.max(0, currentDebt + changeAmount);

    await pb.collection("kaza_logs").update(userRecord.id, {
      [prayerId]: newDebt,
    });

    showKazaMsg(
      msg,
      direction < 0
        ? `✓ ${countValue} vakit kılındı, borçtan düşüldü! Kalan: ${newDebt}`
        : `${countValue} vakit borca eklendi. Kalan: ${newDebt}`,
      true,
    );

    if (countInput) countInput.value = "1";
    await refreshKazaStats(container, pb, birthDate, gender);
  } catch (err) {
    console.error("Güncelleme hatası:", err);
    showKazaMsg(msg, "PocketBase güncellenirken hata oluştu.", false);
  }
}

async function refreshKazaStats(container, pb, birthDate, gender) {
  // İlk toplam borç verisini direkt doğum tarihinden dinamik alıyoruz (Hiç şaşmaz!)
  const initialCalc = calculateMissedPrayers(birthDate, gender, 12);
  const userId = pb.authStore.model.id;

  let userRecord = null;
  try {
    userRecord = await pb
      .collection("kaza_logs")
      .getFirstListItem(`user = "${userId}"`);
  } catch (err) {}

  let grandInitialTotal = 0;
  let grandCurrentDebtTotal = 0;

  PRAYERS.forEach((p) => {
    const initialDebt = initialCalc[p.id] || 0;
    // PB kaydı henüz yoksa kalan borç = ilk borçtur
    const currentDebt = userRecord
      ? (userRecord[p.id] ?? initialDebt)
      : initialDebt;

    grandInitialTotal += initialDebt;
    grandCurrentDebtTotal += currentDebt;

    const remainEl = container.querySelector(`#remaining-${p.id}`);
    const initialEl = container.querySelector(`#initial-${p.id}`);
    const progressEl = container.querySelector(`#progress-${p.id}`);

    if (remainEl) remainEl.textContent = currentDebt;
    if (initialEl) initialEl.textContent = initialDebt;

    // Yüzde Hesabı: (Kılınan Vakit / İlk Borç) * 100
    if (progressEl) {
      const completed = Math.max(0, initialDebt - currentDebt);
      const pct =
        initialDebt > 0
          ? Math.min(
              100,
              Math.max(0, Math.round((completed / initialDebt) * 100)),
            )
          : 0;
      progressEl.style.width = `${pct}%`;
    }
  });

  const totalCompleted = Math.max(0, grandInitialTotal - grandCurrentDebtTotal);
  const overallPct =
    grandInitialTotal > 0
      ? Math.min(
          100,
          Math.max(0, Math.round((totalCompleted / grandInitialTotal) * 100)),
        )
      : 0;

  const bar = container.querySelector("#overallProgressBar");
  const pctText = container.querySelector("#overallPercentage");
  const initText = container.querySelector("#initialTotalText");
  const remText = container.querySelector("#totalRemainingText");

  if (bar) bar.style.width = `${overallPct}%`;
  if (pctText) pctText.textContent = `%${overallPct} Kılındı`;
  if (initText) initText.textContent = grandInitialTotal;
  if (remText) remText.textContent = grandCurrentDebtTotal;
}

function showKazaMsg(el, text, success) {
  if (!el) return;
  el.textContent = text;
  el.className = `text-xs mt-3 ${success ? "text-emerald-400 font-medium" : "text-rose-400 font-medium"}`;
  el.classList.remove("hidden");
}