// islands/QuizConfigure.tsx
import { useEffect, useState } from "preact/hooks";
import { QuizConfig } from "../utils/types.ts";
import { AsyncYesNoPop } from "./AsyncYesNoPop.tsx";

export interface ArrangementProps {
  quizConfig: QuizConfig;
  // kvObj: KvObj<QuizConfig>;
  quizOrder: { index: number; slots: string[] };
  quizMode: string;
  tabs: string[];
}

const NEW_TAB_VALUE = "__new_tab__";

export default function ArrangeQuiz(
  { quizConfig, quizOrder, quizMode, tabs }: ArrangementProps,
) {
  // Theme classes are defined in styles.css with @media (prefers-color-scheme: dark)

  const [ask, popupElement] = AsyncYesNoPop();
  const [thisQuizConfig, setQuizConfig] = useState<QuizConfig>(quizConfig);
  const [orderedQuizStr, setOrderQuizStr] = useState<string>(
    JSON.stringify(thisQuizConfig),
  );
  const [thisQuizConfigStr, setQuizConfigStr] = useState<string>(
    JSON.stringify({
      theUpdate: null,
      quiz: quizConfig,
      //kvObj: kvObj,
      quizOrder: quizOrder,
    }),
  );
  const [selectedSlot, setSelectedSlot] = useState(0);
  const [thisQuizOder, setThisQuizOrder] = useState(quizOrder);
  const [randomOrder, setRandomOrder] = useState(true);
  const [modeType, setModeType] = useState(quizMode);
  //const [isLoading, setIsLoading] = useState(true);

  // Tab selection state
  const [selectedTabIndex, setSelectedTabIndex] = useState<
    number | typeof NEW_TAB_VALUE
  >(-1);
  const [newTabName, setNewTabName] = useState("");
  const isNewTab = selectedTabIndex === NEW_TAB_VALUE;
  const isExistingTab = typeof selectedTabIndex === "number" &&
    selectedTabIndex >= 0;

  const [count, setCount] = useState(0);

  const handleClick = () => {
    setCount((prev) => {
      const newCount = prev + 1;
      return newCount;
    });
  };

  const handleSaveQuiz = async (event: Event) => {
    //console.log("Clicked save");
    //if (changeMode && changeMode.mode) {
    // setQuizConfigStr(JSON.stringify({ theUpdate:changeMode.mode, quiz: thisQuizConfig, kvObj:kvObj,quizOrder:thisQuizOder }));
    // handleClick();
    event.preventDefault();
    //value={JSON.stringify({ theUpdate:null, quiz: quiz , kvObj:quizProps[index] ? cloneObjectExcept(quizProps[index],["value"]) as KvObj<QuizConfig>: null})}

    const form = event.currentTarget as HTMLFormElement;

    const userConfirmed = await ask(
      "Do you want to save this change?",
      Date.now(),
    );

    if (userConfirmed) {
      form.submit();
    }
    //const userConfirmed = window.confirm("Do you wanted to save changes?");

    // if (userConfirmed) {
    //   (event.currentTarget as HTMLFormElement).submit();
    // }
    //} else {
    //  event.preventDefault();
    //}
  };

  useEffect(() => {
    //console.log("setting mode!!",quizConfig.quiz_mode)
    if (quizConfig.quiz_mode) {
      setModeType(quizConfig.quiz_mode);
    }
  }, []);

  useEffect(() => {
    // Initialize selectedTabIndex to 0 when tabs are available and no tab is selected
    if (tabs.length > 0 && selectedTabIndex === -1) {
      setSelectedTabIndex(0);
    }
  }, [tabs, selectedTabIndex]);

  return (
    <>
      {popupElement}
      <div
        className={`theme-container p-2 sm:p-3 md:p-4 rounded-lg shadow-md max-w-md mx-auto w-full overflow-auto`}
      >
        <div hidden>
          <button onClick={handleClick}>Increment</button>
          <p>Count: {count}</p>
        </div>

        <h2 className="text-2xl font-bold mb-4 theme-text">
          Arrange Quizzes
        </h2>

        <div className="theme-secondary-container p-2 sm:p-3 md:p-4 rounded-lg shadow-md max-w-md mx-auto w-full overflow-auto">
          <h2 className="text-2xl font-bold mb-4 theme-text">
            Dashboard Quiz List
          </h2>
          <form
            action="/language/arrange"
            method="POST"
            onSubmit={handleSaveQuiz}
          >
            <input
              type="hidden"
              name="quizConfigData"
              value={thisQuizConfigStr}
            />
            <input
              type="hidden"
              name="quizMode"
              value={quizMode}
            />
            {/* Step 1: Select a quiz */}
            <div className="mb-4">
              <label
                htmlFor="quizSelect"
                className="block mb-2 theme-text"
              >
                Select Quiz
              </label>
              <select
                id="quizSelect"
                value={thisQuizOder.index}
                onChange={(e: any) => {
                  const newIndex = parseInt(e.target.value, 10);
                  setSelectedSlot(newIndex);
                  thisQuizOder.index = newIndex;
                  setThisQuizOrder({ ...thisQuizOder });
                  // Reset tab selection when quiz changes
                  setSelectedTabIndex(-1);
                  setNewTabName("");
                  setQuizConfigStr(
                    JSON.stringify({
                      theUpdate: newIndex,
                      quiz: thisQuizConfig,
                      quizOrder: thisQuizOder,
                    }),
                  );
                }}
                className="w-full px-3 py-2 rounded-md theme-select"
              >
                <option value={-1}>Select a quiz to move</option>
                {thisQuizOder.slots.map((name: string, i: number) => (
                  <option
                    key={i}
                    className="text-black"
                    value={i}
                  >
                    {`${i} - ${name}`}
                  </option>
                ))}
              </select>
            </div>

            {/* Step 2: Select a tab (only shown after quiz is selected) */}
            {thisQuizOder.index != -1 && (
              <div className="mb-4">
                <label
                  htmlFor="tabSelect"
                  className="block mb-2 theme-text"
                >
                  Select Tab
                </label>
                <select
                  id="tabSelect"
                  value={selectedTabIndex === NEW_TAB_VALUE
                    ? NEW_TAB_VALUE
                    : selectedTabIndex}
                  onChange={(e: any) => {
                    const value = e.target.value;
                    if (value === NEW_TAB_VALUE) {
                      setSelectedTabIndex(NEW_TAB_VALUE);
                      setNewTabName("");
                    } else {
                      setSelectedTabIndex(parseInt(value, 10));
                      setNewTabName("");
                    }
                  }}
                  className="w-full px-3 py-2 rounded-md theme-select"
                >
                  <option value={-1}>Select a tab</option>
                  {tabs.map((tabName: string, i: number) => (
                    <option
                      key={i}
                      className="text-black"
                      value={i}
                    >
                      {tabName}
                    </option>
                  ))}
                  <option
                    value={NEW_TAB_VALUE}
                    className="text-black font-semibold"
                  >
                    + New Tab
                  </option>
                </select>
              </div>
            )}

            {/* Step 3a: New tab name input (only shown if "New Tab" is selected) */}
            {thisQuizOder.index != -1 && isNewTab && (
              <div className="mb-4">
                <label
                  htmlFor="newTabName"
                  className="block mb-2 theme-text"
                >
                  New Tab Name
                </label>
                <input
                  type="text"
                  id="newTabName"
                  value={newTabName}
                  onChange={(e: any) => setNewTabName(e.target.value)}
                  placeholder="Enter new tab name"
                  className="w-full px-3 py-2 rounded-md theme-input border theme-border"
                />
              </div>
            )}

            {/* Step 3b: Position selector (only shown if existing tab is selected) */}
            {thisQuizOder.index != -1 && isExistingTab && (
              <div className="mb-4">
                <label
                  htmlFor="quizOrder"
                  className="block mb-2 theme-text"
                >
                  Select Position in Tab
                </label>
                <select
                  id="quizOrder"
                  value={selectedSlot}
                  onChange={(e: any) => {
                    setSelectedSlot(parseInt(e.target.value, 10));
                    setQuizConfigStr(
                      JSON.stringify({
                        theUpdate: parseInt(e.target.value, 10),
                        quiz: thisQuizConfig,
                        quizOrder: thisQuizOder,
                      }),
                    );
                  }}
                  className="w-full px-3 py-2 rounded-md theme-select"
                >
                  {thisQuizOder.slots.map((name: string, i: number) => (
                    <option
                      key={i}
                      className="text-black"
                      value={i}
                    >
                      {`Position ${i + 1}`}
                    </option>
                  ))}
                </select>
              </div>
            )}

            {/* Save button for moving to new tab */}
            {thisQuizOder.index != -1 && isNewTab &&
              newTabName.trim().length > 0 && (
              <div className="flex space-x-2 mt-4">
                <button
                  type="submit"
                  className="theme-button px-4 py-2 rounded w-full"
                  onClick={() => {
                    setQuizConfigStr(
                      JSON.stringify({
                        theUpdate: thisQuizOder.index,
                        quiz: thisQuizConfig,
                        quizOrder: thisQuizOder,
                        tabAction: "new",
                        newTabName: newTabName.trim(),
                        newTabIndex: tabs.length,
                      }),
                    );
                  }}
                >
                  Move to New Tab
                </button>
              </div>
            )}

            {/* Save button for reordering position within tab */}
            {thisQuizOder.index != -1 && isExistingTab &&
              thisQuizOder.index !== selectedSlot && (
              <div className="flex space-x-2 mt-4">
                <button
                  type="submit"
                  className="theme-button px-4 py-2 rounded w-full"
                  onClick={() => {
                    setQuizConfigStr(
                      JSON.stringify({
                        theUpdate: selectedSlot,
                        quiz: thisQuizConfig,
                        quizOrder: thisQuizOder,
                        tabAction: "reorder",
                        targetTabIndex: selectedTabIndex,
                      }),
                    );
                  }}
                >
                  Save Position Change
                </button>
              </div>
            )}

            {/* Save button for moving to different existing tab (same position) */}
            {thisQuizOder.index != -1 && isExistingTab &&
              thisQuizOder.index === selectedSlot && (
              <div className="flex space-x-2 mt-4">
                <button
                  type="submit"
                  className="theme-button px-4 py-2 rounded w-full"
                  onClick={() => {
                    setQuizConfigStr(
                      JSON.stringify({
                        theUpdate: thisQuizOder.index,
                        quiz: thisQuizConfig,
                        quizOrder: thisQuizOder,
                        tabAction: "move",
                        targetTabIndex: selectedTabIndex,
                        targetTabName: tabs[selectedTabIndex as number],
                      }),
                    );
                  }}
                >
                  Move to Tab
                </button>
              </div>
            )}
          </form>
        </div>
      </div>
      <div class="fixed bottom-4 inset-x-0 flex justify-center z-40 pointer-events-none">
        <div class="flex gap-2 w-11/12 max-w-md pointer-events-auto">
          <span class={`w-[200px] py-3 px-6`}></span>
          <span class={`w-[16px]`}></span>
          <button
            type="button"
            onClick={() => {
              globalThis.location.href = "/language/dashboard";
            }}
            class={`w-[200px] theme-button font-semibold py-3 px-6 rounded-full shadow-lg text-center`}
          >
            Dashboard
          </button>
        </div>
      </div>
    </>
  );
}