import style from "./style.module.css";
import { useEffect, useMemo, useRef, useState } from "react";
import { Close } from "@mui/icons-material";
import {
  Button,
  Dialog,
  DialogActions,
  DialogContent,
  DialogTitle,
  IconButton,
} from "@mui/material";
import fileSize from "filesize";
import SendIcon from "@mui/icons-material/Send";
import { inputFile, sendFile, uploadBigFile } from "../../telegram/telegram";
import { useDispatch } from "react-redux";
import { addFileOfStorage } from "../../store/fileList";

enum Status {
  normal,
  addFile,
  receive,
}

interface Props {
  isSignIn: boolean;
  onNotSignIn: () => void;
}

export function HomeButton(props: Props) {
  let [status, setStatus] = useState(Status.normal);
  let [boxStyle, setBoxStyle] = useState([style.box]);
  let [isReceive, setIsReceive] = useState(false);
  let [waitedFileList, setWaitedFileList] = useState<any[]>([]);
  let [uploadRatio, setUploadRatio] = useState(0);
  let [isFinish, setIsFinish] = useState(false);
  let [startUploadTime, setStartUploadTime] = useState(0);

  let uploadSpeed = useMemo(() => {
    if (waitedFileList.length === 0) {
      return "0/s";
    }
    let size = waitedFileList[0].size;
    if (uploadRatio === 0) {
      return "0/s";
    }
    return (
      fileSize((size * uploadRatio * 10) / (Date.now() - startUploadTime)) +
      "/s"
    );
  }, [startUploadTime, uploadRatio, waitedFileList]);

  const dispatch = useDispatch();

  let onNormal = () => {
    setStatus(Status.normal);
  };
  let onAddFile = () => {
    setStatus(Status.addFile);
  };
  let onReceive = () => {
    setStatus(Status.receive);
  };

  useEffect(() => {
    switch (status) {
      case Status.normal:
        setBoxStyle([style.box]);
        break;
      case Status.addFile:
        setBoxStyle([style.box, style.boxActivePlus]);
        break;
      case Status.receive:
        setBoxStyle([style.box, style.boxActiveReceive]);
        break;
    }
  }, [status]);

  let addFileInput = useRef<HTMLInputElement>(null);

  let OnChangeFileInput = (e: any) => {
    setWaitedFileList(e.target.files);
  };

  let handleFileUpload = () => {
    setUploadRatio(1);
    setStartUploadTime(Date.now());
    const reader = new FileReader();
    reader.onload = function (event) {
      if (event.target && event.target.result) {
        let bytes = event.target.result;
        uploadBigFile(bytes as ArrayBuffer, setUploadRatio)
          .then((file) => {
            console.log("uploadFile ret:", file);
            sendFile(
              // @ts-ignore
              inputFile(file.file_id, file.total_part, waitedFileList[0].name),
              waitedFileList[0].type
            ).then((result) => {
              console.log("sendFile ret:", result);
              result.updates[1].message.media.document.file_name =
                waitedFileList[0].name;
              dispatch(
                addFileOfStorage(result.updates[1].message.media.document)
              );
              setIsFinish(true);
            });
          })
          .catch((error) => {
            console.log("uploadFile error:", error);
            alert(error);
          });
      }
    };
    reader.readAsArrayBuffer(waitedFileList[0]);
  };
  return (
    <div className={boxStyle.join(" ")}>
      {!isReceive ? (
        <>
          <div className={style.plus}>➕</div>
          <div
            className={style.addFile}
            onMouseEnter={onAddFile}
            onMouseLeave={onNormal}
            onClick={() => addFileInput.current?.click()}
          >
            添加文件
            <input
              ref={addFileInput}
              type="file"
              style={{ display: "none" }}
              onChange={OnChangeFileInput}
            />
          </div>
          <button
            className={style.receive}
            onMouseEnter={onReceive}
            onMouseLeave={onNormal}
            onClick={() => {
              if (props.isSignIn) {
                setIsReceive(true);
              } else {
                props.onNotSignIn();
              }
            }}
          >
            接收文件
          </button>
        </>
      ) : (
        <>
          <input
            placeholder={"输入6位传输口令获取文件"}
            style={{}}
            className={isReceive ? style.receiveInput : style.receiveInputNone}
          />
          <IconButton
            className={style.receiveInputClose}
            aria-label="delete"
            onClick={() => {
              setIsReceive(false);
            }}
          >
            <Close />
          </IconButton>
        </>
      )}

      <Dialog open={waitedFileList.length !== 0}>
        <DialogTitle>文件上传</DialogTitle>
        <DialogContent sx={{ minWidth: 300 }}>
          是否上传文件?
          <br />
          <br />
          文件名: {waitedFileList.length > 0 ? waitedFileList[0].name : ""}
          <br />
          文件大小:{" "}
          {waitedFileList.length > 0 ? fileSize(waitedFileList[0].size) : ""}
          <br />
          {uploadRatio !== 0 && <>正在上传: {uploadRatio.toFixed(2)}%</>}
          <br />
          {uploadRatio !== 0 && (
            <>已用时间: {(Date.now() - startUploadTime) / 1000}s</>
          )}
          <br />
          {uploadRatio !== 0 && <>上传速度: {uploadSpeed}</>}
          <br />
          {isFinish && <>上传完成</>}
        </DialogContent>
        <DialogActions>
          <Button
            variant="outlined"
            onClick={() => {
              setWaitedFileList([]);
              setUploadRatio(0);
              setIsFinish(false);
            }}
          >
            取消
          </Button>
          {uploadRatio === 0 && (
            <Button
              variant="contained"
              onClick={handleFileUpload}
              endIcon={<SendIcon />}
            >
              上传
            </Button>
          )}
        </DialogActions>
      </Dialog>
    </div>
  );
}