import { DeleteOutline, FileOpenOutlined } from "@mui/icons-material";
import { Box, Button, CircularProgress, LinearProgress, Stack, TextField, Typography } from "@mui/material";
import { open } from "@tauri-apps/api/dialog";
import { readBinaryFile } from "@tauri-apps/api/fs";
import { invoke } from "@tauri-apps/api/tauri";
import { useAtom } from "jotai";
import Image from "next/image";
import { FC, useEffect, useState } from "react";
import { useSettings } from "../../../../contexts/SettingsContext";
import { defaultSettings } from "../../../../lib/settings";
import { stagedSettingsAtom } from "../../../../lib/store/jotai/settings";
import { CategoryTitle } from "../CategoryTitle";
import { SettingsItem } from "../SettingsItem";

interface BackgroundProps {
  sx?: any;
}

export const Background: FC<BackgroundProps> = ({ sx }) => {
  // contexts
  const { settings } = useSettings();

  // atoms
  const [stagedSettings, setStagedSettings] = useAtom(stagedSettingsAtom);

  // states
  const [oldWallpaperPath, setOldWallpaperPath] = useState<string | null>(null);
  const [targetWallpaperPath, setTargetWallpaperPath] = useState<string | null>(null);
  const [imageBlob, setImageBlob] = useState<string | null>(null);
  const [noImageSelectedIcon, setNoImageSelectedIcon] = useState<string | null>(null);

  const handleSettingsBackgroundValueChange = (
    settingKey: string,
    settingValue: boolean | number | string | number[],
  ) => {
    const newSettings = {
      ...stagedSettings,
      background: {
        ...stagedSettings.background,
        [settingKey]: settingValue,
      },
    };
    setStagedSettings(newSettings);

    return newSettings;
  };

  const setImageSrc = async (filePath: string) => {
    const imageBlobTemp = await readBinaryFile(filePath);

    if (imageBlobTemp) setImageBlob(URL.createObjectURL(new Blob([imageBlobTemp])));
  };

  const selectImage = async () => {
    const { appLocalDataDir, basename } = await import("@tauri-apps/api/path");

    // clear the states first
    setTargetWallpaperPath(null);
    setImageBlob(null);

    let selectedFilePath = await open({
      multiple: false,
      filters: [
        {
          name: "Images",
          extensions: ["jpg", "png", "jpeg", "webp", "gif"],
        },
      ],
    });

    // if the user somehow manages to select multiple files, take the first file
    if (Array.isArray(selectedFilePath)) {
      selectedFilePath = selectedFilePath[0];
    }

    if (selectedFilePath) {
      setTargetWallpaperPath(selectedFilePath);

      // construct the destination file path
      const appLocalDataDirPath = await appLocalDataDir();
      const filename = await basename(selectedFilePath);
      const destinationFilePath = appLocalDataDirPath + "wallpaper/" + filename;
      handleSettingsBackgroundValueChange("background_image_path", destinationFilePath);
    }
  };

  const clearImage = async () => {
    handleSettingsBackgroundValueChange("background_image_path", "");
  };

  // if settings.background.background_image_path changes, update the image
  useEffect(() => {
    const applyWallpaper = async () => {
      // apply the new wallpaper image
      try {
        // if there is already a wallpaper file, delete it
        if (settings.background.background_image_path && oldWallpaperPath) {
          try {
            await invoke("delete_old_wallpaper_images");
          } catch (error) {
            console.error("Failed to delete old wallpaper image", error);
          }
        }
        if (targetWallpaperPath)
          await invoke("process_wallpaper_image", {
            filePathString: targetWallpaperPath,
          });
      } catch (error) {
        console.error(error);
      }
    };

    applyWallpaper();

    setOldWallpaperPath(settings.background.background_image_path);
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [settings.background.background_image_path]);

  // update the preview image when stagedSettings.background.background_image_path changes
  useEffect(() => {
    if (targetWallpaperPath) {
      setImageSrc(targetWallpaperPath);
    } else {
      setImageBlob(null);
    }
  }, [targetWallpaperPath]);

  useEffect(() => {});

  return (
    <Box sx={{ sx }}>
      <CategoryTitle title="Wallpaper" />
      <Box
        sx={{
          position: "relative",
          // dynamic width based on the parent container
          width: "100%",
          // 3:2 aspect ratio (2/3 = 66.67%) qwuik mafs
          paddingBottom: "66.67%",
          // Hide overflow to maintain aspect ratio
          overflow: "hidden",
          borderRadius: "8px", // Optional: rounded corners
        }}
      >
        {imageBlob ? (
          <Image
            alt="Image not found"
            // fill the box r/catsareliquid
            layout="fill"
            objectFit="cover"
            src={imageBlob}
          />
        ) : (
          <Box
            sx={{
              alignItems: "center",
              backgroundColor: "rgba(0, 0, 0, 0.1)",
              display: "flex",
              flexDirection: "column",
              height: "100%",
              justifyContent: "center",
              position: "absolute",
              width: "100%",
            }}
          >
            {targetWallpaperPath ? (
              <CircularProgress color="primary" />
            ) : (
              <>
                {/* eslint-disable-next-line @next/next/no-img-element */}
                <img
                  alt="Image not found"
                  src="/images/cry.webp"
                  style={{
                    height: "50%",
                  }}
                />
                <Typography
                  color="text.disabled"
                  variant="h6"
                >
                  No image selected
                </Typography>
              </>
            )}
          </Box>
        )}
      </Box>
      <Box
        sx={{
          mb: 2,
          mt: 1,
        }}
      >
        <Stack
          direction="row"
          spacing={1}
        >
          <Button
            color="primary"
            onClick={() => {
              selectImage();
            }}
            startIcon={<FileOpenOutlined />}
            size="small"
            variant="outlined"
          >
            Select
          </Button>
          <Button
            color="warning"
            onClick={clearImage}
            startIcon={<DeleteOutline />}
            size="small"
            variant="outlined"
          >
            Clear
          </Button>
        </Stack>
      </Box>
      <CategoryTitle title="Colors" />
      <SettingsItem
        defaultText={defaultSettings.background.background_color}
        description="Background color"
        input={
          <TextField
            name="background_color"
            onChange={(e) => {
              handleSettingsBackgroundValueChange(e.target.name, e.target.value);
            }}
            sx={{
              width: "100%",
            }}
            size="small"
            type="color"
            value={stagedSettings.background.background_color}
            variant="standard"
          />
        }
      />
      <SettingsItem
        defaultText={defaultSettings.background.background_color_popup}
        description="Popup background color"
        input={
          <TextField
            name="background_color_popup"
            onChange={(e) => {
              handleSettingsBackgroundValueChange(e.target.name, e.target.value);
            }}
            sx={{
              width: "100%",
            }}
            size="small"
            type="color"
            value={stagedSettings.background.background_color_popup}
            variant="standard"
          />
        }
      />
    </Box>
  );
};