feat: implement donate function

dapp/src/components/DonateModal.astro

@@ -94,6 +94,9 @@
 </div>
 
 <script>
+import { sendXLM } from "../service/PaymentService";
+import { getAddressFromDomain } from "../service/SorobanDomainContractService";
+
   document.addEventListener("astro:page-load", () => {
     const amountButtons = document.querySelectorAll('.amount-button');
     const amountInputContainer = document.getElementById('amount-input-container');
@@ -133,5 +136,23 @@
         modal.classList.add('hidden');
       });
     }
+
+    const contributeButton = document.getElementById('contribute-button');
+    if (contributeButton) {
+      contributeButton.addEventListener('click', async () => {
+        console.log('Contribute button clicked');
+        const domainAddress = await getAddressFromDomain("tansu");
+        console.log("domainAddress:", domainAddress);
+
+        const amountInput = document.getElementById('amount-input') as HTMLInputElement;
+        const tipAmountInput = document.getElementById('tip-amount-input') as HTMLInputElement;
+
+        const amount = parseFloat(amountInput.value) || 0;
+        const tipAmount = parseFloat(tipAmountInput.value) || 0;
+
+        const payment = await sendXLM(amount.toString(), tipAmount.toString(), import.meta.env.PUBLIC_TANSU_CONTRACT_ID);
+        console.log("donate:", payment);
+      });
+    }
   });
 </script>

dapp/src/service/SorobanDomainContractService.ts

@@ -0,0 +1,28 @@
+import type { Record } from '@creit.tech/sorobandomains-sdk';
+import { Domain404Error } from '@creit.tech/sorobandomains-sdk';
+import sdk from '../contracts/soroban_domain_sdk';
+
+async function getAddressFromDomain (
+  domainName: string,
+) {
+  try {
+    const domainRecord: Record = await sdk.searchDomain({ domain: domainName });
+    return domainRecord;
+  } catch (e) {
+    if (e instanceof Error && e.name === Domain404Error.name) {
+      return {
+        "error": true,
+        "message": "SDK error",
+      }
+    } else {
+      return {
+        "error": true,
+        "message": "Simulation error",
+      }
+    }
+  }
+}
+
+export {
+  getAddressFromDomain,
+}