import { Switch } from "@radix-ui/react-switch";
import classNames from "classnames";
import { useAppStore } from "../../store/app-store";
import { useProjectStore } from "../../store/project-store";
import { AppState } from "../../types";
import CodePreview from "../preview/CodePreview";
import Spinner from "../core/Spinner";
import KeyboardShortcutBadge from "../core/KeyboardShortcutBadge";
import TipLink from "../messages/TipLink";
import SelectAndEditModeToggleButton from "../select-and-edit/SelectAndEditModeToggleButton";
import { Button } from "../ui/button";
import { Textarea } from "../ui/textarea";
import { useEffect, useRef } from "react";
import HistoryDisplay from "../history/HistoryDisplay";
import Variants from "../variants/Variants";

interface SidebarProps {
  showSelectAndEditFeature: boolean;
  doUpdate: (instruction: string) => void;
  regenerate: () => void;
  cancelCodeGeneration: () => void;
}

function Sidebar({
  showSelectAndEditFeature,
  doUpdate,
  regenerate,
  cancelCodeGeneration,
}: SidebarProps) {
  const textareaRef = useRef<HTMLTextAreaElement>(null);

  const {
    appState,
    updateInstruction,
    setUpdateInstruction,
    shouldIncludeResultImage,
    setShouldIncludeResultImage,
  } = useAppStore();

  const { inputMode, referenceImages, executionConsoles, head, commits } =
    useProjectStore();

  const viewedCode =
    head && commits[head]
      ? commits[head].variants[commits[head].selectedVariantIndex].code
      : "";

  const executionConsole =
    (head && executionConsoles[commits[head].selectedVariantIndex]) || [];

  // When coding is complete, focus on the update instruction textarea
  useEffect(() => {
    if (appState === AppState.CODE_READY && textareaRef.current) {
      textareaRef.current.focus();
    }
  }, [appState]);

  return (
    <>
      <Variants />

      {/* Show code preview only when coding */}
      {appState === AppState.CODING && (
        <div className="flex flex-col">
          {/* Speed disclaimer for video mode */}
          {inputMode === "video" && (
            <div
              className="bg-yellow-100 border-l-4 border-yellow-500 text-yellow-700
            p-2 text-xs mb-4 mt-1"
            >
              Code generation from videos can take 3-4 minutes. We do multiple
              passes to get the best result. Please be patient.
            </div>
          )}

          <div className="flex items-center gap-x-1">
            <Spinner />
            {executionConsole.slice(-1)[0]}
          </div>

          <CodePreview code={viewedCode} />

          <div className="flex w-full">
            <Button
              onClick={cancelCodeGeneration}
              className="w-full dark:text-white dark:bg-gray-700"
            >
              Cancel
            </Button>
          </div>
        </div>
      )}

      {appState === AppState.CODE_READY && (
        <div>
          <div className="grid w-full gap-2">
            <Textarea
              ref={textareaRef}
              placeholder="Tell the AI what to change..."
              onChange={(e) => setUpdateInstruction(e.target.value)}
              onKeyDown={(e) => {
                if (e.key === "Enter" && !e.shiftKey) {
                  doUpdate(updateInstruction);
                }
              }}
              value={updateInstruction}
            />
            <div className="flex justify-between items-center gap-x-2">
              <div className="font-500 text-xs text-slate-700 dark:text-white">
                Include screenshot of current version?
              </div>
              <Switch
                checked={shouldIncludeResultImage}
                onCheckedChange={setShouldIncludeResultImage}
                className="dark:bg-gray-700"
              />
            </div>
            <Button
              onClick={() => doUpdate(updateInstruction)}
              className="dark:text-white dark:bg-gray-700 update-btn"
            >
              Update <KeyboardShortcutBadge letter="enter" />
            </Button>
          </div>
          <div className="flex items-center justify-end gap-x-2 mt-2">
            <Button
              onClick={regenerate}
              className="flex items-center gap-x-2 dark:text-white dark:bg-gray-700 regenerate-btn"
            >
              🔄 Regenerate
            </Button>
            {showSelectAndEditFeature && <SelectAndEditModeToggleButton />}
          </div>
          <div className="flex justify-end items-center mt-2">
            <TipLink />
          </div>
        </div>
      )}

      {/* Reference image display */}
      <div className="flex gap-x-2 mt-2">
        {referenceImages.length > 0 && (
          <div className="flex flex-col">
            <div
              className={classNames({
                "scanning relative": appState === AppState.CODING,
              })}
            >
              {inputMode === "image" && (
                <img
                  className="w-[340px] border border-gray-200 rounded-md"
                  src={referenceImages[0]}
                  alt="Reference"
                />
              )}
              {inputMode === "video" && (
                <video
                  muted
                  autoPlay
                  loop
                  className="w-[340px] border border-gray-200 rounded-md"
                  src={referenceImages[0]}
                />
              )}
            </div>
            <div className="text-gray-400 uppercase text-sm text-center mt-1">
              {inputMode === "video" ? "Original Video" : "Original Screenshot"}
            </div>
          </div>
        )}
        <div className="bg-gray-400 px-4 py-2 rounded text-sm hidden">
          <h2 className="text-lg mb-4 border-b border-gray-800">Console</h2>
          {Object.entries(executionConsoles).map(([index, lines]) => (
            <div key={index}>
              {lines.map((line, lineIndex) => (
                <div
                  key={`${index}-${lineIndex}`}
                  className="border-b border-gray-400 mb-2 text-gray-600 font-mono"
                >
                  <span className="font-bold mr-2">{`${index}:${
                    lineIndex + 1
                  }`}</span>
                  {line}
                </div>
              ))}
            </div>
          ))}
        </div>
      </div>

      <HistoryDisplay shouldDisableReverts={appState === AppState.CODING} />
    </>
  );
}

export default Sidebar;