Feature/transfer fraction button

frontend/components/hypercert-fetcher.tsx

@@ -28,6 +28,7 @@ export interface HypercertFetcherProps {
   useQueryString?: boolean; // Forces us to try the query string first
   byClaimId?: string; // Fetch by claimId
   byMetadataUri?: string; // Fetch by metadataUri; If both are specified, byMetadataUri will override the URI in the claim
+  overrideChainId?: number; // Override the chainId
 }
 
 export function HypercertFetcher(props: HypercertFetcherProps) {
@@ -40,9 +41,12 @@ export function HypercertFetcher(props: HypercertFetcherProps) {
     useQueryString,
     byClaimId,
     byMetadataUri,
+    overrideChainId,
   } = props;
   const [data, setData] = React.useState<Hypercert | undefined>();
-  const { client } = useHypercertClient();
+  const { client } = useHypercertClient({
+    overrideChainId,
+  });
 
   React.useEffect(() => {
     if (!client) {

frontend/components/split-fraction-button.tsx

@@ -6,6 +6,7 @@ import { PlusIcon } from "primereact/icons/plus";
 import { Delete } from "@mui/icons-material";
 import { useSplitFractionUnits } from "../hooks/splitClaimUnits";
 import { toast } from "react-toastify";
+import { TransferFractionButton } from "./transfer-fraction-button";
 
 const style = {
   position: "absolute",
@@ -183,6 +184,7 @@ export function SplitFractionButton({
           </Formik>
         </Box>
       </Modal>
+      <TransferFractionButton fractionId={fractionId} />
     </>
   );
 }

frontend/components/transfer-fraction-button.tsx

@@ -1,5 +1,39 @@
-import { Button } from "@mui/material";
-import React from "react";
+import {
+  Box,
+  Button,
+  Dialog,
+  DialogActions,
+  DialogContent,
+  DialogContentText,
+  DialogTitle,
+  IconButton,
+  Modal,
+  TextField,
+  Typography,
+} from "@mui/material";
+import { Send } from "@mui/icons-material";
+import React, { useState } from "react";
+import { useTransferFraction } from "../hooks/transferFraction";
+import { Form, Formik } from "formik";
+import { isAddress } from "viem";
+import { useClaimById, useFractionById } from "../hooks/fractions";
+import { useAccountLowerCase } from "../hooks/account";
+import { formatAddress } from "../lib/formatting";
+import { TransferRestrictions } from "@hypercerts-org/sdk";
+import { useReadTransferRestrictions } from "../hooks/readTransferRestriction";
+
+const style = {
+  position: "absolute",
+  top: "50%",
+  left: "50%",
+  transform: "translate(-50%, -50%)",
+  width: 400,
+  bgcolor: "background.paper",
+  boxShadow: 24,
+  pt: 2,
+  px: 4,
+  pb: 3,
+};
 
 interface Props {
   fractionId: string;
@@ -13,18 +47,199 @@ export function TransferFractionButton({
   className,
   disabled,
 }: Props) {
+  const [open, setOpen] = useState(false);
+  const handleOpen = () => setOpen(true);
+  const handleClose = () => setOpen(false);
+  const { address } = useAccountLowerCase();
+
+  const { write, readOnly, txPending } = useTransferFraction({
+    onComplete: () => {
+      handleClose();
+    },
+  });
+
+  const [dialogOpen, setDialogOpen] = React.useState(false);
+
+  const handleDialogOpen = () => {
+    setDialogOpen(true);
+  };
+
+  const handleDialogClose = () => {
+    setDialogOpen(false);
+  };
+
+  const { data: fractionData, isLoading: isLoadingFraction } =
+    useFractionById(fractionId);
+
+  const { data: claim, isLoading: isLoadingClaim } = useClaimById(
+    fractionData?.claimToken?.claim.id,
+  );
+
+  const {
+    data: transferRestrictions,
+    isLoading: isLoadingTransferRestrictions,
+  } = useReadTransferRestrictions(claim?.claim?.tokenID);
+
+  const determineCanTransfer = () => {
+    if (!address) {
+      return false;
+    }
+
+    if (!transferRestrictions) {
+      return false;
+    }
+
+    if (!(transferRestrictions in TransferRestrictions)) {
+      return false;
+    }
+
+    const transferRestrictionValue =
+      TransferRestrictions[
+        transferRestrictions as keyof typeof TransferRestrictions
+      ];
+
+    if (transferRestrictionValue === TransferRestrictions.DisallowAll) {
+      return false;
+    }
+
+    if (transferRestrictionValue === TransferRestrictions.AllowAll) {
+      return true;
+    }
+
+    if (transferRestrictionValue === TransferRestrictions.FromCreatorOnly) {
+      return claim?.claim?.creator === address;
+    }
+
+    return false;
+  };
+
+  const canTransfer = determineCanTransfer();
+
+  const tokenId = fractionId.split("-")[1];
+  const _disabled =
+    txPending ||
+    readOnly ||
+    disabled ||
+    isLoadingFraction ||
+    isLoadingClaim ||
+    isLoadingTransferRestrictions;
+
+  if (!canTransfer) {
+    return null;
+  }
+
   return (
-    <Button
-      onClick={() =>
-        console.log({
-          fractionId,
-          text,
-          className,
-          disabled,
-        })
-      }
-    >
-      Send
-    </Button>
+    <>
+      <IconButton
+        size="small"
+        aria-label="transfer"
+        color="primary"
+        disabled={_disabled}
+        onClick={() => {
+          console.log({
+            fractionId,
+            text,
+            className,
+            disabled,
+          });
+          handleOpen();
+        }}
+      >
+        <Send fontSize="inherit" />
+      </IconButton>
+      <Modal
+        open={open}
+        onClose={handleClose}
+        aria-labelledby="modal-modal-title"
+        aria-describedby="modal-modal-description"
+      >
+        <Box sx={{ ...style, width: 400 }}>
+          <Formik
+            initialValues={{ to: "" }}
+            validate={(values) => {
+              if (!values.to || values.to === "") {
+                return { to: "Required" };
+              }
+
+              if (!isAddress(values.to)) {
+                return { to: "Invalid address" };
+              }
+            }}
+            onSubmit={() => {
+              handleDialogOpen();
+            }}
+          >
+            {({ isSubmitting, isValid, setFieldValue, errors, values }) => {
+              const isDisabled = _disabled || isSubmitting;
+              return (
+                <>
+                  <Form
+                    style={{
+                      display: "flex",
+                      flexDirection: "column",
+                      alignItems: "flex-start",
+                      gap: "1rem",
+                    }}
+                  >
+                    <Typography
+                      id="modal-modal-title"
+                      variant="h6"
+                      component="h2"
+                    >
+                      Transfer this fraction
+                    </Typography>
+                    <TextField
+                      error={!!errors.to}
+                      helperText={errors.to}
+                      name="to"
+                      required
+                      style={{ width: "100%" }}
+                      disabled={isDisabled}
+                      placeholder="Recipient address"
+                      onChange={(e) => {
+                        setFieldValue("to", e.target.value);
+                      }}
+                    />
+                    <Button disabled={!isValid} type={"submit"}>
+                      Transfer
+                    </Button>
+                  </Form>{" "}
+                  <Dialog
+                    open={dialogOpen}
+                    onClose={handleClose}
+                    aria-labelledby="alert-dialog-title"
+                    aria-describedby="alert-dialog-description"
+                  >
+                    <DialogTitle id="alert-dialog-title">
+                      Are you sure you want to transfer?
+                    </DialogTitle>
+                    <DialogContent>
+                      <DialogContentText id="alert-dialog-description">
+                        Transferring to {formatAddress(values.to)}. This action
+                        cannot be reversed.
+                      </DialogContentText>
+                    </DialogContent>
+                    <DialogActions>
+                      <Button color="error" onClick={handleDialogClose}>
+                        cancel
+                      </Button>
+                      <Button
+                        color="primary"
+                        onClick={async () => {
+                          await write(BigInt(tokenId), values.to);
+                        }}
+                        autoFocus
+                      >
+                        transfer
+                      </Button>
+                    </DialogActions>
+                  </Dialog>
+                </>
+              );
+            }}
+          </Formik>
+        </Box>
+      </Modal>
+    </>
   );
 }

frontend/hooks/fractions.ts

@@ -39,3 +39,31 @@ export const useFractionById = (fractionId: string) => {
     { enabled: !!fractionId },
   );
 };
+
+export const useClaimById = (claimId?: string | null) => {
+  const { client } = useHypercertClient();
+
+  return useQuery(
+    ["graph", "claims", claimId],
+    () => {
+      if (!client) return null;
+      if (!claimId) return null;
+      return client.indexer.claimById(claimId);
+    },
+    { enabled: !!claimId && !!client },
+  );
+};
+
+export const useClaimMetadataByUri = (uri?: string | null) => {
+  const { client } = useHypercertClient();
+
+  return useQuery(
+    ["graph", "claim-metadata", uri],
+    () => {
+      if (!client) return null;
+      if (!uri) return null;
+      return client.storage.getMetadata(uri);
+    },
+    { enabled: !!uri && !!client },
+  );
+};

frontend/hooks/hypercerts-client.ts

@@ -4,7 +4,11 @@ import { NFT_STORAGE_TOKEN, WEB3_STORAGE_TOKEN } from "../lib/config";
 import { HypercertClient, HypercertClientConfig } from "@hypercerts-org/sdk";
 import { useWalletClient, useNetwork } from "wagmi";
 
-export const useHypercertClient = () => {
+export const useHypercertClient = ({
+  overrideChainId,
+}: {
+  overrideChainId?: number;
+} = {}) => {
   const { chain } = useNetwork();
   const clientConfig = {
     chain,
@@ -26,13 +30,14 @@ export const useHypercertClient = () => {
   } = useWalletClient();
 
   useEffect(() => {
-    if (chain?.id && !walletClientLoading && !isError && walletClient) {
+    const chainId = overrideChainId || chain?.id;
+    if (chainId && !walletClientLoading && !isError && walletClient) {
       setIsLoading(true);
 
       try {
         const config: Partial<HypercertClientConfig> = {
           ...clientConfig,
-          chain: { id: chain.id },
+          chain: { id: chainId },
           walletClient,
         };
 

frontend/hooks/readTransferRestriction.ts

@@ -0,0 +1,28 @@
+import { useHypercertClient } from "./hypercerts-client";
+import { useWalletClient } from "wagmi";
+import { useQuery } from "@tanstack/react-query";
+import { readContract } from "viem/actions";
+
+export const useReadTransferRestrictions = (tokenId?: bigint) => {
+  const { client } = useHypercertClient();
+  const { data: walletClient } = useWalletClient();
+
+  return useQuery(
+    ["read-transfer-restrictions", tokenId],
+    async () => {
+      if (!client) return null;
+      if (!tokenId) return null;
+      if (!walletClient) return null;
+      const contract = client.contract;
+
+      if (!contract) return null;
+
+      return (await readContract(walletClient, {
+        ...contract,
+        functionName: "readTransferRestriction",
+        args: [tokenId],
+      })) as string;
+    },
+    { enabled: !!tokenId && !!client },
+  );
+};