CirclesTools/replenishMyCRC.html at main · koeppelmann/CirclesTools · GitHub

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<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8"/>
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>Replenish My CRC</title>
  <script src="https://cdn.jsdelivr.net/npm/ethers@5.7.2/dist/ethers.umd.min.js"></script>
  <style>
      body {
          font-family: Arial, sans-serif;
          margin: 2rem;
          max-width: 800px;
          margin: 0 auto;
          padding: 20px;
      }

      .container {
          background: #fff;
          padding: 20px;
          border-radius: 8px;
          box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      }

      button {
          background: #191568;
          color: white;
          border: none;
          border-radius: 4px;
          cursor: pointer;
          padding: 10px;
          width: 100%;
          max-width: 400px;
          margin: 5px 0;
      }

      button:hover {
          background: #4a39cc;
      }

      button:disabled {
          background: #ccc;
          cursor: not-allowed;
      }

      .section {
          margin-bottom: 20px;
          padding: 15px;
          border: 1px solid #eee;
          border-radius: 4px;
      }

      .error {
          color: red;
          margin: 10px 0;
      }

      .success {
          color: green;
          margin: 10px 0;
      }

      #amountControls {
          display: none;
      }

      .slider-container {
          margin: 20px 0;
      }

      input[type="range"] {
          width: 100%;
          max-width: 400px;
      }

      input[type="number"] {
          padding: 8px;
          margin: 5px 0;
          width: 100%;
          max-width: 382px; /* 400px - 2*padding */
      }

      pre {
          background: #f5f5f5;
          padding: 10px;
          overflow-x: auto;
          border-radius: 4px;
      }

      .info {
          background: #f0f9ff;
          border-left: 4px solid #3b82f6;
          padding: 10px;
          margin: 10px 0;
      }
  </style>
</head>
<body>
<div class="container">
  <h1>Replenish my CRC</h1>
  Tool to replenish your balance of your own CRC.
  <div class="section">
    <h2>1. Connect Wallet</h2>
    <button id="connectButton">Connect Wallet</button>
    <div id="walletStatus"></div>
  </div>

  <div class="section">
    <h2>2. Check max replenishable amount</h2>
    <div class="info">
      This will check the maximum amount you can transfer to
      yourself using your own tokens.
    </div>
    <button id="checkPathButton">Check</button>
    <div id="maxFlowResult"></div>
  </div>

  <div id="amountControls" class="section">
    <h2>3. Select amount to replenish</h2>
    <div class="slider-container">
      <input
          type="range"
          id="amountSlider"
          min="0"
          max="100"
          step="0.000001"
      />
      <input type="number" id="amountInput" step="0.000001"/>
      <div id="amountDisplay"></div>
    </div>
    <button id="executeButton">Replenish</button>
    <div id="executionStatus"></div>
    <pre id="calldata"></pre>
  </div>
</div>

<script>
    // Constants
    const API_ENDPOINT = "https://rpc.aboutcircles.com/";
    const CIRCLES_HUB_ADDRESS =
        "0xc12C1E50ABB450d6205Ea2C3Fa861b3B834d13e8";
    // Just the operateFlowMatrix function ABI
    const CIRCLES_HUB_ABI = [
        {
            inputs: [
                {
                    internalType: "address[]",
                    name: "_flowVertices",
                    type: "address[]",
                },
                {
                    components: [
                        {
                            internalType: "uint16",
                            name: "streamSinkId",
                            type: "uint16",
                        },
                        {
                            internalType: "uint192",
                            name: "amount",
                            type: "uint192",
                        },
                    ],
                    internalType: "struct TypeDefinitions.FlowEdge[]",
                    name: "_flow",
                    type: "tuple[]",
                },
                {
                    components: [
                        {
                            internalType: "uint16",
                            name: "sourceCoordinate",
                            type: "uint16",
                        },
                        {
                            internalType: "uint16[]",
                            name: "flowEdgeIds",
                            type: "uint16[]",
                        },
                        {
                            internalType: "bytes",
                            name: "data",
                            type: "bytes",
                        },
                    ],
                    internalType: "struct TypeDefinitions.Stream[]",
                    name: "_streams",
                    type: "tuple[]",
                },
                {
                    internalType: "bytes",
                    name: "_packedCoordinates",
                    type: "bytes",
                },
            ],
            name: "operateFlowMatrix",
            outputs: [],
            stateMutability: "nonpayable",
            type: "function",
        },
    ];

    let provider, signer, hubContract;
    let maxFlow = "0";
    let currentAddress = null;

    // Helper function to format Wei to ETH
    function formatWei(wei) {
        return ethers.utils.formatUnits(wei, 18);
    }

    // Helper function to parse ETH to Wei
    function parseEth(eth) {
        return ethers.utils.parseUnits(eth.toString(), 18);
    }

    // Connect wallet function
    async function connectWallet() {
        try {
            if (typeof window.ethereum === "undefined") {
                throw new Error("Please install MetaMask");
            }

            provider = new ethers.providers.Web3Provider(
                window.ethereum,
            );
            await provider.send("eth_requestAccounts", []);
            signer = provider.getSigner();
            currentAddress = await signer.getAddress();

            document.getElementById("walletStatus").innerHTML =
                `<div class="success">Connected: ${currentAddress}</div>`;

            hubContract = new ethers.Contract(
                CIRCLES_HUB_ADDRESS,
                CIRCLES_HUB_ABI,
                signer,
            );
        } catch (error) {
            document.getElementById("walletStatus").innerHTML =
                `<div class="error">Error: ${error.message}</div>`;
        }
    }

    // Find path function
    async function findPath(amount = null) {
        if (!currentAddress) {
            return null; // Silent return if no wallet is connected
        }

        const params = {
            Source: currentAddress,
            Sink: currentAddress, // Send to self
            TargetFlow: amount || parseEth("100000000000").toString(), // Use large number for max flow check
            WithWrap: true,
            ToTokens: [currentAddress], // Specify connected address as return token
        };

        const response = await fetch(API_ENDPOINT, {
            method: "POST",
            headers: {"Content-Type": "application/json"},
            body: JSON.stringify({
                jsonrpc: "2.0",
                id: 0,
                method: "circlesV2_findPath",
                params: [params],
            }),
        });

        const data = await response.json();
        if (data.error) {
            throw new Error(data.error.message);
        }

        return data.result;
    }

    // Helper to pack coordinates array into bytes
    function packCoordinates(coordinates) {
        let packedBuffer = "0x";
        coordinates.forEach((coord) => {
            let hex = coord.toString(16).padStart(4, "0");
            packedBuffer += hex;
        });
        return packedBuffer;
    }

    /**
     * Build the four arguments expected by Hub.operateFlowMatrix()
     * from a Pathfinder result.
     *
     * @param {object}   pathData  – result of circlesV2_findPath
     * @param {string}   from      – source avatar (connected wallet)
     * @param {string}   to        – sink avatar   (usually = from)
     * @param {string}   value     – target flow   (dec / hex string)
     *
     * @returns {{
     *   _flowVertices: string[],
     *   _flow:        { streamSinkId: number, amount: string|bigint }[],
     *   _streams:     { sourceCoordinate: number, flowEdgeIds: number[], data: Uint8Array }[],
     *   _packedCoordinates: Uint8Array,
     *   sourceCoordinate: number
     * }}
     */
    function generateFlowMatrixParams(pathData, from, to, value) {
        // ────── guards ───────────────────────────────────────────────────────
        if (!pathData || !Array.isArray(pathData.transfers) || !pathData.transfers.length)
            throw new Error('Pathfinder returned no transfers');

        from = from.toLowerCase();
        to = to.toLowerCase();

        const expectedValue = BigInt(value);

        // ────── 1. normalise transfers + collect all addresses ───────────────
        const addrs = new Set([from, to]);
        const transfers = pathData.transfers.map(t => {
            const norm = {
                from: t.from.toLowerCase(),
                to: t.to.toLowerCase(),
                tokenOwner: t.tokenOwner.toLowerCase(),
                value: t.value                 // string
            };
            addrs.add(norm.from);
            addrs.add(norm.to);
            addrs.add(norm.tokenOwner);
            return norm;
        });

        // ────── 2. strictly-ascending vertices (numeric compare) ─────────────
        const flowVertices = [...addrs].sort((a, b) => (BigInt(a) < BigInt(b) ? -1 : 1));

        // lookup[address] → coordinate
        const lookUpMap = Object.create(null);
        flowVertices.forEach((addr, idx) => (lookUpMap[addr] = idx));

        // ────── 3. flow edges, mark edges that reach the sink ────────────────
        const flowEdges = transfers.map(t => ({
            streamSinkId: (t.to === to) ? 1 : 0,      // only edges that end in 'to' get 1
            amount: BigInt(t.value)             // uint192 fits in JS BigInt
        }));

        // ensure *at least* one edge is terminal
        if (!flowEdges.some(e => e.streamSinkId === 1)) {
            const lastIdx = transfers.map(t => t.to).lastIndexOf(to);
            (lastIdx >= 0 ? flowEdges[lastIdx] : flowEdges[flowEdges.length - 1]).streamSinkId = 1;
        }

        // verify sum( terminal amounts ) == value requested
        const terminalSum = flowEdges
            .filter(e => e.streamSinkId === 1)
            .reduce((s, e) => s + e.amount, 0n);

        if (terminalSum !== expectedValue)
            throw new Error(`terminal amount ${terminalSum} ≠ requested ${expectedValue}`);

        // ────── 4. one Stream referencing all terminal edges ─────────────────
        const flowEdgeIds = flowEdges
            .map((e, idx) => (e.streamSinkId === 1 ? idx : -1))
            .filter(idx => idx !== -1);

        const stream = {
            sourceCoordinate: lookUpMap[from],
            flowEdgeIds: flowEdgeIds,
            data: new Uint8Array()        // no user-data
        };

        // ────── 5. coordinate triples (tokenId, src, dst) ────────────────────
        const coords = [];
        transfers.forEach(t => {
            coords.push(
                lookUpMap[t.tokenOwner],
                lookUpMap[t.from],
                lookUpMap[t.to]
            );
        });

        // pack uint16[] → Uint8Array big-endian
        const packed = new Uint8Array(coords.length * 2);
        coords.forEach((c, i) => {
            packed[2 * i] = c >> 8;
            packed[2 * i + 1] = c & 0xff;
        });

        // ────── 6. return exactly what operateFlowMatrix expects ─────────────
        return {
            _flowVertices: flowVertices,
            _flow: flowEdges,
            _streams: [stream],
            _packedCoordinates: packed,
            sourceCoordinate: lookUpMap[from]      // optional convenience
        };
    }


    // Event Listeners
    document
        .getElementById("connectButton")
        .addEventListener("click", connectWallet);

    document
        .getElementById("checkPathButton")
        .addEventListener("click", async () => {
            if (!currentAddress) {
                document.getElementById("maxFlowResult").innerHTML =
                    `<div class="error">Please connect your wallet first</div>`;
                return;
            }

            try {
                const result = await findPath();
                maxFlow = result.maxFlow;
                const maxFlowEth = formatWei(maxFlow);

                document.getElementById("maxFlowResult").innerHTML =
                    `<div class="success">Maximum available: ${maxFlowEth} CRC</div>`;

                // Show and setup amount controls
                const amountControls =
                    document.getElementById("amountControls");
                amountControls.style.display = "block";

                const slider = document.getElementById("amountSlider");
                const input = document.getElementById("amountInput");

                slider.max = maxFlowEth;
                slider.value = maxFlowEth;
                input.value = maxFlowEth;

                document.getElementById("amountDisplay").textContent =
                    `Selected: ${maxFlowEth} CRC`;
            } catch (error) {
                document.getElementById("maxFlowResult").innerHTML =
                    `<div class="error">Error: ${error.message}</div>`;
            }
        });

    // Sync slider and input
    document
        .getElementById("amountSlider")
        .addEventListener("input", (e) => {
            const value = e.target.value;
            document.getElementById("amountInput").value = value;
            document.getElementById("amountDisplay").textContent =
                `Selected: ${value} CRC`;
        });

    document
        .getElementById("amountInput")
        .addEventListener("input", (e) => {
            const value = Math.min(e.target.value, formatWei(maxFlow));
            document.getElementById("amountSlider").value = value;
            document.getElementById("amountDisplay").textContent =
                `Selected: ${value} CRC`;
        });

    document
        .getElementById("executeButton")
        .addEventListener("click", async () => {
            if (!currentAddress) {
                document.getElementById("executionStatus").innerHTML =
                    `<div class="error">Please connect your wallet first</div>`;
                return;
            }

            try {
                const amount = parseEth(
                    document.getElementById("amountInput").value,
                );
                const pathData = await findPath(amount.toString());
                const params = generateFlowMatrixParams(pathData, currentAddress, currentAddress, amount.toString());

                // document.getElementById("calldata").textContent =
                // JSON.stringify(params, null, 2);

                const tx = await hubContract.operateFlowMatrix(
                    params._flowVertices,
                    params._flow,
                    params._streams,
                    params._packedCoordinates,
                );

                document.getElementById("executionStatus").innerHTML =
                    `<div class="success">Transaction submitted: ${tx.hash}</div>`;

                const receipt = await tx.wait();
                document.getElementById("executionStatus").innerHTML +=
                    `<div class="success">Transaction confirmed!</div>`;
            } catch (error) {
                document.getElementById("executionStatus").innerHTML =
                    `<div class="error">Error: ${error.message}</div>`;
            }
        });
</script>
</body>
</html>