Create AcreSubgraphApi

And expose the `getDepositsByOwner` function that returns all deposits
for a given depositor.

sdk/src/lib/api/AcreSubgraphApi.ts

@@ -0,0 +1,79 @@
+import { ChainIdentifier } from "@keep-network/tbtc-v2.ts"
+import HttpApi from "./HttpApi"
+import { DepositStatus } from "./TbtcApi"
+
+type DepositDataResponse = {
+  data: {
+    deposits: {
+      id: string
+      bitcoinTransactionId: string
+      amountToDeposit: string
+      initialDepositAmount: string
+      events: { type: "Initialized" | "Finalized" }[]
+    }[]
+  }
+}
+
+type Deposit = {
+  depositKey: string
+  txHash: string
+  amount: bigint
+  status: DepositStatus
+}
+
+export default class AcreSubgraphApi extends HttpApi {
+  async getDepositsByOwner(
+    depositOwnerId: ChainIdentifier,
+  ): Promise<Deposit[]> {
+    const query = `
+    query {
+      deposits(
+            where: {depositOwner_: {id: "0x${depositOwnerId.identifierHex}"}}
+        ) {
+            id
+            bitcoinTransactionId
+            initialDepositAmount
+            events {
+                type
+            }
+            amountToDeposit
+        }
+    }`
+    const response = await this.postRequest(
+      "",
+      { query },
+      { credentials: undefined },
+    )
+
+    if (!response.ok) {
+      throw new Error(
+        `Could not get deposits by deposit owner: ${response.status}`,
+      )
+    }
+
+    const responseData = (await response.json()) as DepositDataResponse
+
+    return responseData.data.deposits.map((deposit) => {
+      const {
+        bitcoinTransactionId: txHash,
+        amountToDeposit,
+        initialDepositAmount,
+        events,
+        id,
+      } = deposit
+
+      // The subgraph indexes only initialized or finalized deposits.
+      const status = events.some(({ type }) => type === "Finalized")
+        ? DepositStatus.Finalized
+        : DepositStatus.Initialized
+
+      return {
+        depositKey: id,
+        txHash,
+        amount: BigInt(amountToDeposit ?? initialDepositAmount),
+        type: "deposit",
+        status,
+      }
+    })
+  }
+}