import React, { useEffect, useRef, useState } from "react";
import List from "@mui/material/List";
import ListItem from "@mui/material/ListItem";
import Divider from "@mui/material/Divider";
import ListItemText from "@mui/material/ListItemText";
import ListItemAvatar from "@mui/material/ListItemAvatar";
import Avatar from "@mui/material/Avatar";
import Typography from "@mui/material/Typography";
import { Box, Button, ButtonBase, Dialog, DialogActions, DialogContent, DialogTitle, IconButton, Input } from "@mui/material";
import { CustomButton } from "./App-styles";
import { useDropzone } from "react-dropzone";
import EditIcon from "@mui/icons-material/Edit";
import { Label } from "./components/Group/AddGroup";
import { Spacer } from "./common/Spacer";
import { getWallets, storeWallets, walletVersion } from "./background";
import { useModal } from "./common/useModal";
import PhraseWallet from "./utils/generateWallet/phrase-wallet";
import { decryptStoredWalletFromSeedPhrase } from "./utils/decryptWallet";
import { crypto } from "./constants/decryptWallet";
import { LoadingButton } from "@mui/lab";
import { PasswordField } from "./components";

const parsefilenameQortal = (filename)=> {
    return filename.startsWith("qortal_backup_") ? filename.slice(14) : filename;
  }

export const Wallets = ({ setExtState, setRawWallet, rawWallet }) => {
  const [wallets, setWallets] = useState([]);
  const [isLoading, setIsLoading] = useState(true);
  const [seedValue, setSeedValue] = useState("");
  const [seedName, setSeedName] = useState("");
  const [seedError, setSeedError] = useState("");

  const [password, setPassword] = useState("");
  const [isOpenSeedModal, setIsOpenSeedModal] = useState(false);
  const [isLoadingEncryptSeed, setIsLoadingEncryptSeed] = useState(false);

  const { isShow, onCancel, onOk, show,  } = useModal();

  const { getRootProps, getInputProps } = useDropzone({
    accept: {
      "application/json": [".json"], // Only accept JSON files
    },
    onDrop: async (acceptedFiles) => {
      const files: any = acceptedFiles;
      let importedWallets: any = [];

      for (const file of files) {
        try {
          const fileContents = await new Promise((resolve, reject) => {
            const reader = new FileReader();

            reader.onabort = () => reject("File reading was aborted");
            reader.onerror = () => reject("File reading has failed");
            reader.onload = () => {
              // Resolve the promise with the reader result when reading completes
              resolve(reader.result);
            };

            // Read the file as text
            reader.readAsText(file);
          });
          if (typeof fileContents !== "string") continue;
          const parsedData = JSON.parse(fileContents)
          importedWallets.push({...parsedData, filename: file?.name});
        } catch (error) {
          console.error(error);
        }
      }

      let error: any = null;
      let uniqueInitialMap = new Map();

      // Only add a message if it doesn't already exist in the Map
      importedWallets.forEach((wallet) => {
        if (!wallet?.address0) return;
        if (!uniqueInitialMap.has(wallet?.address0)) {
          uniqueInitialMap.set(wallet?.address0, wallet);
        }
      });
      const data = Array.from(uniqueInitialMap.values());
      if (data && data?.length > 0) {
        const uniqueNewWallets = data.filter(
          (newWallet) =>
            !wallets.some(
              (existingWallet) =>
                existingWallet?.address0 === newWallet?.address0
            )
        );
        setWallets([...wallets, ...uniqueNewWallets]);
      }
    },
  });

  const updateWalletItem = (idx, wallet) => {
    setWallets((prev) => {
      let copyPrev = [...prev];
      if (wallet === null) {
        copyPrev.splice(idx, 1); // Use splice to remove the item
        return copyPrev;
      } else {
        copyPrev[idx] = wallet; // Update the wallet at the specified index
        return copyPrev;
      }
    });
  };

  const handleSetSeedValue = async ()=> {
    try {
      setIsOpenSeedModal(true)
      const {seedValue, seedName, password} = await show({
        message: "",
        publishFee: "",
      });
      setIsLoadingEncryptSeed(true)
      const res = await decryptStoredWalletFromSeedPhrase(seedValue)
      const wallet2 = new PhraseWallet(res, walletVersion);
      const wallet = await wallet2.generateSaveWalletData(
        password,
        crypto.kdfThreads,
        () => {}
      );
      if(wallet?.address0){
        setWallets([...wallets, {
          ...wallet,
          name: seedName
        }]);
        setIsOpenSeedModal(false)
        setSeedValue('')
        setSeedName('')
        setPassword('')
        setSeedError('')
      } else {
        setSeedError('Could not create wallet.')
      }

    } catch (error) {
      setSeedError(error?.message || 'Could not create wallet.')
    } finally {
      setIsLoadingEncryptSeed(false)
    }
  }

  const selectedWalletFunc = (wallet) => {
    setRawWallet(wallet);
    setExtState("wallet-dropped");
  };

  useEffect(()=> {
    setIsLoading(true)
    getWallets().then((res)=> {
      
        if(res && Array.isArray(res)){
            setWallets(res)
        }
        setIsLoading(false)
    }).catch((error)=> {
        console.error(error)
        setIsLoading(false)
    })
  }, [])

  useEffect(()=> {
    if(!isLoading && wallets && Array.isArray(wallets)){
        storeWallets(wallets)
    }
  }, [wallets, isLoading])

  if(isLoading) return null

  return (
    <div>
      {(wallets?.length === 0 ||
        !wallets) ? (
          <>
            <Typography>No wallets saved</Typography>
            <Spacer height="75px" />
          </>
        ): (
            <>
            <Typography>Your saved wallets</Typography>
            <Spacer height="30px" />
          </>
        )}

      {rawWallet && (
        <Box>
          <Typography>Selected Wallet:</Typography>
          {rawWallet?.name && <Typography>{rawWallet.name}</Typography>}
          {rawWallet?.address0 && (
            <Typography>{rawWallet?.address0}</Typography>
          )}
        </Box>
      )}
      {wallets?.length > 0 && (
         <List
         sx={{
           width: "100%",
           maxWidth: "500px",
           bgcolor: "background.paper",
           maxHeight: "60vh",
           overflow: "auto",
         }}
       >
         {wallets?.map((wallet, idx) => {
           return (
             <>
               <WalletItem
                 setSelectedWallet={selectedWalletFunc}
                 key={wallet?.address0}
                 wallet={wallet}
                 idx={idx}
                 updateWalletItem={updateWalletItem}
               />
               <Divider variant="inset" component="li" />
             </>
           );
         })}
       </List>
      )}
     
      <Box
        sx={{
          display: "flex",
          gap: "10px",
          alignItems: "center",
          position: wallets?.length === 0 ? 'relative' : 'fixed',
          bottom:  wallets?.length === 0 ? 'unset' : '20px',
          right:  wallets?.length === 0 ? 'unset' : '20px'
        }}
      >
        <CustomButton onClick={handleSetSeedValue} sx={{
          padding: '10px'
        }} >
         
          Add seed-phrase
        </CustomButton>
        <CustomButton sx={{
          padding: '10px'
        }} {...getRootProps()}>
          <input {...getInputProps()} />
          Add wallets
        </CustomButton>
      </Box>

       <Dialog
       open={isOpenSeedModal}
       aria-labelledby="alert-dialog-title"
       aria-describedby="alert-dialog-description"
       onKeyDown={(e) => {
         if (e.key === 'Enter' && seedValue && seedName && password) {
           onOk({seedValue, seedName, password});
         }
       }}
     >
       <DialogTitle id="alert-dialog-title">
         Type or paste in your seed-phrase
       </DialogTitle>
       <DialogContent>
         <Box
           sx={{
             display: "flex",
             flexDirection: "column",
          
           }}
         >
            <Label>Name</Label>
           <Input
             placeholder="Name"
             value={seedName}
             onChange={(e) => setSeedName(e.target.value)}
           />
           <Spacer height="7px" />
           <Label>Seed-phrase</Label>
           <Input
             placeholder="Seed-phrase"
             value={seedValue}
             onChange={(e) => setSeedValue(e.target.value)}
           />
                      <Spacer height="7px" />

           <Label>Choose new password</Label>
           <PasswordField
              id="standard-adornment-password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              autoComplete="off"
            />
 
         </Box>
       
       </DialogContent>
       <DialogActions>
         <Button disabled={isLoadingEncryptSeed} variant="contained" onClick={()=> {
          setIsOpenSeedModal(false)
        setSeedValue('')
        setSeedName('')
        setPassword('')
        setSeedError('')
         }}>
           Close
         </Button>
         <LoadingButton
            loading={isLoadingEncryptSeed}
           disabled={!seedValue || !seedName || !password}
           variant="contained"
           onClick={() => {
            if(!seedValue || !seedName || !password) return
            onOk({seedValue, seedName, password});
           }}
           autoFocus
         >
           Add
         </LoadingButton>
         <Typography sx={{
          fontSize: '14px',
          visibility: seedError ? 'visible' : 'hidden'
         }}>{seedError}</Typography>
       </DialogActions>
     </Dialog>

    </div>
      
  );
};

const WalletItem = ({ wallet, updateWalletItem, idx, setSelectedWallet }) => {
  const [name, setName] = useState("");
  const [note, setNote] = useState("");
  const [isEdit, setIsEdit] = useState(false);

  useEffect(() => {
    if (wallet?.name) {
      setName(wallet.name);
    }
    if (wallet?.note) {
      setNote(wallet.note);
    }
  }, [wallet]);
  return (
    <>
      <ButtonBase
        onClick={() => {
          setSelectedWallet(wallet);
        }}
        sx={{
            width: '100%'
        }}
      >
        <ListItem
        
          secondaryAction={
            <IconButton
              onClick={(e) => {
                e.stopPropagation();
                setIsEdit(true);
              }}
              edge="end"
              aria-label="edit"
            >
              <EditIcon
                sx={{
                  color: "white",
                }}
              />
            </IconButton>
          }
          alignItems="flex-start"
        >
          <ListItemAvatar>
            <Avatar alt="" src="/static/images/avatar/1.jpg" />
          </ListItemAvatar>
          <ListItemText
            primary={wallet?.name ? wallet.name : wallet?.filename ? parsefilenameQortal(wallet?.filename)  : "No name"}
            secondary={
              <Box
                sx={{
                  display: "flex",
                  flexDirection: "column",
                }}
              >
                <Typography
                  component="span"
                  variant="body2"
                  sx={{ color: "text.primary", display: "inline" }}
                >
                  {wallet?.address0}
                </Typography>
                {wallet?.note}
              </Box>
            }
          />
        </ListItem>
      </ButtonBase>
      {isEdit && (
        <Box
          sx={{
            padding: "8px",
          }}
        >
          <Label>Name</Label>
          <Input
            placeholder="Name"
            value={name}
            onChange={(e) => setName(e.target.value)}
            sx={{
              width: "100%",
            }}
          />
          <Spacer height="10px" />
          <Label>Note</Label>
          <Input
            placeholder="Note"
            value={note}
            onChange={(e) => setNote(e.target.value)}
            inputProps={{
              maxLength: 100,
            }}
            sx={{
              width: "100%",
            }}
          />
          <Spacer height="10px" />
          <Box
            sx={{
              display: "flex",
              gap: "20px",
              justifyContent: "flex-end",
              width: "100%",
            }}
          >
            <Button  size="small" variant="contained" onClick={() => setIsEdit(false)}>
              Close
            </Button>
            <Button
            sx={{
                backgroundColor: 'var(--unread)',
                "&:hover": {
                    backgroundColor: "var(--unread)", 
                  },
                  "&:focus": {
                    backgroundColor: "var(--unread)", 
                  },
            }}
            size="small"
              variant="contained"
              onClick={() => updateWalletItem(idx, null)}
            >
              Remove
            </Button>
            <Button
            sx={{
                backgroundColor: "#5EB049",
                "&:hover": {
                    backgroundColor: "#5EB049", 
                  },
                  "&:focus": {
                    backgroundColor: "#5EB049", 
                  },
            }}
            size="small"
              variant="contained"
              onClick={() => {
                updateWalletItem(idx, {
                  ...wallet,
                  name,
                  note,
                });
                setIsEdit(false);
              }}
            >
              Save
            </Button>
          </Box>
        </Box>
      )}
      
     
    
    </>
  );
};