import React, { Fragment, useEffect, useRef, useState } from "react";
import { Platform, StyleSheet, View } from "react-native";
import FileViewer from "react-native-file-viewer";
import Share from "react-native-share";
import Icon from "react-native-vector-icons/MaterialCommunityIcons";
import { notesnook } from "../../../../e2e/test.ids";
import { useThemeStore } from "../../../stores/use-theme-store";
import { ToastEvent } from "../../../services/event-manager";
import Exporter from "../../../services/exporter";
import { getElevation } from "../../../utils";
import { ph, pv, SIZE } from "../../../utils/size";
import { sleep } from "../../../utils/time";
import SheetWrapper from "../../ui/sheet";
import { Button } from "../../ui/button";
import DialogHeader from "../../dialog/dialog-header";
import { PressableButton } from "../../ui/pressable";
import Seperator from "../../ui/seperator";
import Heading from "../../ui/typography/heading";
import Paragraph from "../../ui/typography/paragraph";
import {
  eSubscribeEvent,
  eUnSubscribeEvent
} from "../../../services/event-manager";
import { eOpenExportDialog, eCloseExportDialog } from "../../../utils/events";

const ExportNotesSheet = () => {
  const colors = useThemeStore((state) => state.colors);

  const [visible, setVisible] = useState(false);
  const actionSheetRef = useRef();
  const [notes, setNotes] = useState([]);
  const [exporting, setExporting] = useState(false);
  const [complete, setComplete] = useState(false);
  const [doneText, setDoneText] = useState(null);
  const [result, setResult] = useState({});
  useEffect(() => {
    eSubscribeEvent(eOpenExportDialog, open);
    eSubscribeEvent(eCloseExportDialog, close);

    return () => {
      eUnSubscribeEvent(eOpenExportDialog, open);
      eUnSubscribeEvent(eCloseExportDialog, close);
    };
  }, []);

  const open = (data) => {
    setVisible(true);
    setNotes(data);
  };

  const close = (data) => {
    setComplete(false);
    setExporting(false);
    setVisible(false);
    setNotes([]);
  };

  const save = async (func, name) => {
    if (exporting) return;
    setExporting(true);
    setComplete(false);
    let res;
    for (var i = 0; i < notes.length; i++) {
      let note = notes[i];
      res = await func(note);
      if (!res) {
        setExporting(false);
        return;
      }
    }
    setDoneText(
      `Note exported successfully! You can find the exported note in ${
        Platform.OS === "ios"
          ? "Files Manager/Notesnook"
          : `Storage/Notesnook/exported/${name}`
      }.`
    );

    setResult(res);
    setExporting(false);
    setComplete(true);
  };

  useEffect(() => {
    if (visible) {
      actionSheetRef.current.show();
    }
  }, [visible]);

  const actions = [
    {
      title: "PDF",
      func: async () => {
        await save(Exporter.saveToPDF, "PDF");
      },
      icon: "file-pdf-box",
      desc: "Can be opened in a pdf reader like Adobe or Foxit Reader",
      id: notesnook.ids.dialogs.export.pdf
    },
    {
      title: "Markdown",
      func: async () => {
        await save(Exporter.saveToMarkdown, "Markdown");
      },
      icon: "language-markdown",
      desc: "Can be opened in any text or markdown editor",
      id: notesnook.ids.dialogs.export.md
    },
    {
      title: "Plain Text",
      func: async () => {
        await save(Exporter.saveToText, "Text");
      },
      icon: "card-text",
      desc: "Can be opened in any text editor",
      id: notesnook.ids.dialogs.export.text
    },
    {
      title: "HTML",
      func: async () => {
        await save(Exporter.saveToHTML, "Html");
      },
      icon: "language-html5",
      desc: "Can be opened in any web browser",
      id: notesnook.ids.dialogs.export.html
    }
  ];

  return !visible ? null : (
    <SheetWrapper fwdRef={actionSheetRef} onClose={close} visible={true}>
      <View>
        <View
          style={{
            paddingHorizontal: 12
          }}
        >
          <DialogHeader
            icon="export"
            title="Export Note"
            paragraph={
              "All exports are saved in Notesnook/exported folder in phone storage"
            }
          />
        </View>

        <Seperator half />
        <View style={styles.buttonContainer}>
          {actions.map((item) => (
            <Fragment key={item.title}>
              <Seperator half />
              <PressableButton
                onPress={item.func}
                customStyle={{
                  width: "100%",
                  alignItems: "center",
                  flexDirection: "row",
                  paddingRight: 12,
                  paddingVertical: 10,
                  justifyContent: "flex-start",
                  borderRadius: 0,
                  paddingHorizontal: 12
                }}
              >
                <View
                  style={{
                    backgroundColor: colors.shade,
                    borderRadius: 5,
                    height: 60,
                    width: 60,
                    justifyContent: "center",
                    alignItems: "center"
                  }}
                >
                  <Icon
                    name={item.icon}
                    color={colors.accent}
                    size={SIZE.xxxl + 10}
                  />
                </View>
                <View
                  style={{
                    flexShrink: 1
                  }}
                >
                  <Heading style={{ marginLeft: 10 }} size={SIZE.md}>
                    {item.title}
                  </Heading>
                  <Paragraph
                    style={{ marginLeft: 10 }}
                    size={SIZE.sm}
                    color={colors.icon}
                  >
                    {item.desc}
                  </Paragraph>
                </View>
              </PressableButton>
            </Fragment>
          ))}

          <View
            style={{
              width: "100%",
              paddingHorizontal: 12,
              marginTop: 10
            }}
          >
            {complete && (
              <>
                <Button
                  title="Open"
                  type="accent"
                  width="100%"
                  fontSize={SIZE.md}
                  onPress={async () => {
                    close();
                    await sleep(500);
                    FileViewer.open(result.filePath, {
                      showOpenWithDialog: true,
                      showAppsSuggestions: true
                    }).catch((e) => {
                      ToastEvent.show({
                        heading: "Cannot open",
                        message: `No application found to open ${result.name} file.`,
                        type: "success",
                        context: "local"
                      });
                    });
                  }}
                  height={50}
                />
                <Button
                  title="Share"
                  type="shade"
                  width="100%"
                  fontSize={SIZE.md}
                  style={{
                    marginTop: 10
                  }}
                  onPress={async () => {
                    if (Platform.OS === "ios") {
                      Share.open({
                        url: "file:/" + result.filePath
                      }).catch(console.log);
                    } else {
                      FileViewer.open(result.filePath, {
                        showOpenWithDialog: true,
                        showAppsSuggestions: true,
                        shareFile: true
                      }).catch(console.log);
                    }
                  }}
                  height={50}
                />
              </>
            )}
            {complete && (
              <Paragraph
                style={{
                  textAlign: "center",
                  marginTop: 5
                }}
                color={colors.icon}
                size={SIZE.xs}
              >
                {"Note exported as " + result.fileName}
              </Paragraph>
            )}
            {exporting && !complete && (
              <Button loading={true} height={50} width="100%" />
            )}
          </View>
        </View>
      </View>
    </SheetWrapper>
  );
};

const styles = StyleSheet.create({
  container: {
    ...getElevation(5),
    borderRadius: 5,
    paddingVertical: pv
  },
  buttonContainer: {
    justifyContent: "space-between",
    alignItems: "center"
  },
  button: {
    paddingVertical: pv,
    paddingHorizontal: ph,
    marginTop: 10,
    borderRadius: 5,
    width: "100%",
    justifyContent: "center",
    alignItems: "center",
    borderWidth: 1,
    flexDirection: "row"
  },
  buttonText: {
    //fontFamily: "sans-serif",
    color: "white",
    fontSize: SIZE.sm,
    marginLeft: 5
  },
  overlay: {
    width: "100%",
    height: "100%",
    position: "absolute"
  }
});

export default ExportNotesSheet;