(function () {
  var mask = document.getElementById("coinDialog");
  if (!mask) return;

  var balanceEls = mask.querySelectorAll("[data-coin-balance]");
  var costEls = mask.querySelectorAll("[data-coin-cost]");
  var payBtn = mask.querySelector("[data-coin-dialog-pay]");
  var loading = false;
  var paying = false;

  function formatCoins(n) {
    var num = Number(n);
    if (!Number.isFinite(num) || num < 0) num = 0;
    return String(Math.floor(num));
  }

  function setBalance(n) {
    var text = formatCoins(n);
    balanceEls.forEach(function (el) {
      el.textContent = text;
    });
  }

  function setCost(n) {
    var text = formatCoins(n);
    costEls.forEach(function (el) {
      el.textContent = text;
    });
  }

  function toast(message, type) {
    if (typeof window.showToast === "function") {
      window.showToast(message, type);
      return;
    }
    window.alert(message);
  }

  function openLogin() {
    var loginOpen = document.querySelector("[data-login-dialog-open]");
    if (loginOpen) loginOpen.click();
  }

  function goToCoinRecharge() {
    window.location.href = "/deposit/coin/";
  }

  function isInsufficientBalance(res) {
    if (!res) return false;
    if (Number(res.code) === 20004) return true;
    var message = String(res.tip || res.msg || "");
    return /(?:金币|余额).{0,6}不足|不足.{0,6}(?:金币|余额)/.test(message);
  }

  function resolvePlayletId(trigger) {
    if (trigger) {
      var fromTrigger = Number(trigger.getAttribute("data-playlet-id") || 0);
      if (fromTrigger > 0) return fromTrigger;
    }
    var fromMask = Number(mask.getAttribute("data-playlet-id") || 0);
    if (fromMask > 0) return fromMask;
    var playPage =
      document.querySelector("[data-play-page]") ||
      document.querySelector(".play-page");
    if (playPage) {
      var fromPage = Number(playPage.getAttribute("data-playlet-id") || 0);
      if (fromPage > 0) return fromPage;
    }
    var player = document.querySelector("[data-play-player]");
    if (player) {
      var fromPlayer = Number(player.getAttribute("data-playlet-id") || 0);
      if (fromPlayer > 0) return fromPlayer;
    }
    var likeBtn = document.querySelector("[data-playlet-id]");
    if (likeBtn) {
      var fromBtn = Number(likeBtn.getAttribute("data-playlet-id") || 0);
      if (fromBtn > 0) return fromBtn;
    }
    return 0;
  }

  function resolvePlayletSlug(trigger) {
    if (trigger) {
      var fromTrigger = String(trigger.getAttribute("data-playlet-slug") || "").trim();
      if (fromTrigger) return fromTrigger;
    }
    var fromMask = String(mask.getAttribute("data-playlet-slug") || "").trim();
    if (fromMask) return fromMask;
    var playPage =
      document.querySelector("[data-play-page]") ||
      document.querySelector(".play-page");
    if (playPage) {
      var fromPage = String(playPage.getAttribute("data-playlet-slug") || "").trim();
      if (fromPage) return fromPage;
    }
    return "";
  }

  function buildPlayHref(playletId, chapterId) {
    if (!playletId || !chapterId) return "";
    var slug = resolvePlayletSlug(null);
    var key = slug || String(playletId);
    return "/play/" + encodeURIComponent(key) + "/" + chapterId + "/";
  }

  function isOnPlayPage() {
    return !!(
      document.querySelector("[data-play-page]") ||
      document.querySelector(".play-page")
    );
  }

  function afterUnlockSuccess(playletId, chapterId, data) {
    var detail = {
      playletId: playletId,
      chapterId: chapterId,
      balance: data && typeof data.balance === "number" ? data.balance : null,
      canWatch: !!(data && data.canWatch),
      unlocked: !!(data && data.unlocked),
    };
    window.dispatchEvent(
      new CustomEvent("play:chapter-unlocked", { detail: detail })
    );
    if (
      isOnPlayPage() &&
      typeof window.playAfterChapterUnlock === "function"
    ) {
      window.playAfterChapterUnlock(detail);
      return;
    }
    var href = buildPlayHref(playletId, chapterId);
    if (href) {
      window.location.href = href;
    }
  }

  function setPaying(on) {
    paying = !!on;
    if (!payBtn) return;
    payBtn.disabled = paying;
    payBtn.classList.toggle("is-loading", paying);
    payBtn.setAttribute("aria-busy", paying ? "true" : "false");
  }

  function fetchBalance() {
    if (!window.HttpRequest) {
      setBalance(0);
      return Promise.resolve(0);
    }
    return window.HttpRequest.get("/api/auth/getInfo")
      .then(function (res) {
        if (!res || res.code !== 200 || !res.data) {
          if (res && res.code === 401) {
            openLogin();
          }
          throw new Error((res && (res.tip || res.msg)) || "获取余额失败");
        }
        var recharge = res.data.recharge;
        setBalance(recharge);
        if (window.CookieUtil && CookieUtil.setAuthSession) {
          CookieUtil.setAuthSession(res.data);
        }
        return Number(recharge) || 0;
      })
      .catch(function (err) {
        setBalance(0);
        toast((err && err.message) || "获取余额失败", "error");
        return 0;
      });
  }

  function unlockAndPlay() {
    if (paying) return;
    if (!window.HttpRequest) {
      toast("网络模块未就绪", "error");
      return;
    }

    var chapterId = Number(mask.getAttribute("data-chapter-id") || 0);
    var playletId = Number(mask.getAttribute("data-playlet-id") || 0);
    var cost = Number(mask.getAttribute("data-single-coins") || 0);
    var balance = Number(
      (balanceEls[0] && balanceEls[0].textContent) || 0
    );

    if (!chapterId || !playletId) {
      toast("缺少剧集信息，请刷新后重试", "error");
      return;
    }

    if (Number.isFinite(balance) && Number.isFinite(cost) && balance < cost) {
      goToCoinRecharge();
      return;
    }

    setPaying(true);
    window.HttpRequest.post("/api/playlet/chapter/unlock", {
      chapterId: chapterId,
      playletId: playletId,
    })
      .then(function (res) {
        if (!res || res.code !== 200) {
          if (res && res.code === 401) {
            closeDialog();
            openLogin();
            return;
          }
          if (isInsufficientBalance(res)) {
            goToCoinRecharge();
            return;
          }
          throw new Error((res && (res.tip || res.msg)) || "解锁失败");
        }
        var data = res.data || {};
        if (typeof data.balance === "number") {
          setBalance(data.balance);
          if (window.CookieUtil && CookieUtil.setAuthSession) {
            CookieUtil.setAuthSession({ recharge: data.balance });
          }
        }
        toast((res && res.tip) || "解锁成功", "success");
        closeDialog();
        afterUnlockSuccess(
          Number(data.playletId) || playletId,
          Number(data.chapterId) || chapterId,
          data
        );
      })
      .catch(function (err) {
        toast((err && err.message) || "解锁失败，请稍后重试", "error");
      })
      .finally(function () {
        setPaying(false);
      });
  }

  function openDialog(event) {
    if (event) event.preventDefault();
    var trigger =
      event && event.target && event.target.closest
        ? event.target.closest("[data-coin-dialog-open]")
        : null;
    var singleCoins = trigger
      ? Number(trigger.getAttribute("data-single-coins") || 0)
      : 0;
    setCost(singleCoins);
    if (trigger) {
      mask.setAttribute(
        "data-chapter-id",
        trigger.getAttribute("data-chapter-id") || ""
      );
      mask.setAttribute("data-single-coins", String(singleCoins || 0));
      mask.setAttribute(
        "data-playlet-id",
        String(resolvePlayletId(trigger) || "")
      );
      mask.setAttribute("data-playlet-slug", resolvePlayletSlug(trigger));
    } else if (!mask.getAttribute("data-playlet-id")) {
      mask.setAttribute("data-playlet-id", String(resolvePlayletId(null) || ""));
    }

    mask.classList.add("is-open");
    document.body.style.overflow = "hidden";

    if (loading) return;
    loading = true;
    fetchBalance().finally(function () {
      loading = false;
    });
  }

  function closeDialog() {
    mask.classList.remove("is-open");
    document.body.style.overflow = "";
  }

  document.addEventListener("click", function (event) {
    if (event.target.closest("[data-coin-dialog-open]")) {
      openDialog(event);
      return;
    }

    if (event.target.closest("[data-coin-dialog-close]")) {
      closeDialog();
      return;
    }

    if (event.target.closest("[data-coin-dialog-pay]")) {
      event.preventDefault();
      unlockAndPlay();
      return;
    }

    if (event.target === mask) {
      closeDialog();
    }
  });

  document.addEventListener("keydown", function (event) {
    if (event.key === "Escape" && mask.classList.contains("is-open")) {
      closeDialog();
    }
  });

  window.openCoinDialog = openDialog;
  window.closeCoinDialog = closeDialog;
})();