/**
 * my-editor.js — VvvebJS 儲存橋接腳本
 * 覆蓋 vvvebjs 的 saveAjax 行為，附加 project slug 後送至 Flask /api/save
 */
(function () {
  "use strict";

  const SLUG = window.VVVEB_PROJECT_SLUG || "";

  // ── Toast 通知 ──────────────────────────────────────────────────
  function showToast(msg, type) {
    const existing = document.getElementById("vvveb-save-toast");
    if (existing) existing.remove();

    const toast = document.createElement("div");
    toast.id = "vvveb-save-toast";
    const bg = type === "error" ? "#7f1d1d" : "#14532d";
    const border = type === "error" ? "#ef444460" : "#22c55e60";
    Object.assign(toast.style, {
      position: "fixed",
      top: "1rem",
      right: "1rem",
      zIndex: "99999",
      background: bg,
      border: "1px solid " + border,
      color: "#fff",
      borderRadius: "8px",
      padding: "0.65rem 1.1rem",
      fontSize: "0.85rem",
      fontFamily: "Inter, system-ui, sans-serif",
      fontWeight: "500",
      boxShadow: "0 4px 20px rgba(0,0,0,0.5)",
      opacity: "0",
      transform: "translateY(-8px)",
      transition: "opacity 0.3s ease, transform 0.3s ease",
      pointerEvents: "none",
    });
    toast.textContent = msg;
    document.body.appendChild(toast);

    requestAnimationFrame(() => {
      toast.style.opacity = "1";
      toast.style.transform = "translateY(0)";
    });
    setTimeout(() => {
      toast.style.opacity = "0";
      toast.style.transform = "translateY(-8px)";
      setTimeout(() => toast.remove(), 350);
    }, 3000);
  }

  // ── 覆蓋 saveAjax ───────────────────────────────────────────────
  function patchSaveAjax() {
    if (typeof Vvveb === "undefined" || !Vvveb.Builder) {
      // 等待 Vvveb 載入
      setTimeout(patchSaveAjax, 200);
      return;
    }

    const originalSaveAjax = Vvveb.Builder.saveAjax
      ? Vvveb.Builder.saveAjax.bind(Vvveb.Builder)
      : null;

    Vvveb.Builder.saveAjax = function (saveUrl) {
      if (!SLUG) {
        showToast("錯誤：找不到專案識別碼 (slug)", "error");
        return;
      }

      // 取得目前編輯的頁面檔名
      const currentPage = Vvveb.FileManager
        ? Vvveb.FileManager.getCurrentPage
          ? Vvveb.FileManager.getCurrentPage()
          : null
        : null;

      let filename = "index.html";
      if (currentPage && currentPage.filename) {
        filename = currentPage.filename;
      } else if (currentPage && currentPage.file) {
        // 只取檔名部分
        filename = currentPage.file.split("/").pop();
      }

      // 取得 HTML 內容
      let html = "";
      try {
        html = Vvveb.Builder.getHtml ? Vvveb.Builder.getHtml() : "";
      } catch (e) {
        console.error("[my-editor] getHtml failed:", e);
      }

      if (!html) {
        showToast("無法取得頁面內容", "error");
        return;
      }

      // 顯示儲存中狀態
      const saveBtn = document.querySelector(".save-btn");
      if (saveBtn) {
        saveBtn.querySelector(".loading")?.classList.remove("d-none");
        saveBtn.querySelector(".button-text")?.classList.add("d-none");
      }

      const body = new URLSearchParams({
        slug: SLUG,
        file: filename,
        html: html,
      });

      fetch("/api/save", {
        method: "POST",
        headers: { "Content-Type": "application/x-www-form-urlencoded" },
        body: body.toString(),
      })
        .then((res) => res.json())
        .then((data) => {
          if (data.ok) {
            showToast("✓ 已儲存：" + (data.saved || filename));
          } else {
            showToast("儲存失敗：" + (data.error || "未知錯誤"), "error");
          }
        })
        .catch((err) => {
          showToast("網路錯誤：" + err.message, "error");
        })
        .finally(() => {
          if (saveBtn) {
            saveBtn.querySelector(".loading")?.classList.add("d-none");
            saveBtn.querySelector(".button-text")?.classList.remove("d-none");
          }
        });
    };

    console.log("[my-editor] saveAjax patched for slug:", SLUG);
  }

  // ── 啟用 Save 按鈕（vvvebjs 預設 disabled）──────────────────────
  function enableSaveBtn() {
    const btn = document.querySelector(".save-btn");
    if (btn) {
      btn.removeAttribute("disabled");
    } else {
      setTimeout(enableSaveBtn, 300);
    }
  }

  // ── Ctrl+S 快捷鍵 ────────────────────────────────────────────────
  document.addEventListener("keydown", function (e) {
    if ((e.ctrlKey || e.metaKey) && e.key === "s") {
      e.preventDefault();
      if (typeof Vvveb !== "undefined" && Vvveb.Builder && Vvveb.Builder.saveAjax) {
        Vvveb.Builder.saveAjax("/api/save");
      }
    }
  });

  // ── 初始化 ────────────────────────────────────────────────────────
  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", () => {
      patchSaveAjax();
      enableSaveBtn();
    });
  } else {
    patchSaveAjax();
    enableSaveBtn();
  }
})();