chore: add subgraph service contracts boilerplate

Signed-off-by: Tomás Migone <[email protected]>

packages/contracts/contracts/staking/IHorizonStaking.sol

@@ -3,10 +3,6 @@
 pragma solidity >=0.7.6 <0.9.0;
 pragma abicoder v2;
 
-interface Test {
-    function test() external returns (uint256);
-}
-
 interface IHorizonStaking {
     struct Provision {
         // Service provider that created the provision

packages/subgraph-service/contracts/ISubgraphService.sol

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+pragma solidity ^0.8.25;
+
+interface ISubgraphService {
+    // register as a provider in the data service
+    function register(address provisionId, string calldata url, string calldata geohash, uint256 delegatorQueryFeeCut)
+        external;
+
+    // register as a provider in the data service, create the required provision first
+    // function provisionAndRegister(
+    //     uint256 tokens,
+    //     string calldata url,
+    //     string calldata geohash,
+    //     uint256 delegatorQueryFeeCut
+    // ) external;
+}

packages/subgraph-service/contracts/SubgraphService.sol

@@ -1,10 +1,20 @@
-// SPDX-License-Identifier: GPL-3.0
-pragma solidity >=0.4.0 <0.9.0;
+// SPDX-License-Identifier: GPL-2.0-or-later
+pragma solidity ^0.8.25;
 
-import {Test} from "@graphprotocol/contracts/contracts/staking/IHorizonStaking.sol";
+import {IHorizonStaking} from "@graphprotocol/contracts/contracts/staking/IHorizonStaking.sol";
+import {ISubgraphService} from "./ISubgraphService.sol";
+import {SubgraphServiceV1Storage} from "./SubgraphServiceStorage.sol";
 
-contract SimpleTest is Test {
-    function test() external pure returns (uint256) {
-        return 42;
+contract SubgraphService is SubgraphServiceV1Storage, ISubgraphService {
+    function register(address provisionId, string calldata url, string calldata geohash, uint256 delegatorQueryFeeCut)
+        external
+        override
+    {
+        // Get provision from Staking contract
+        // Validate provision parameters meet DS requirements
     }
+
+    function _register(address provisionId, string calldata url, string calldata geohash, uint256 delegatorQueryFeeCut)
+        internal
+    {}
 }

packages/subgraph-service/contracts/SubgraphServiceStorage.sol

@@ -0,0 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+pragma solidity ^0.8.25;
+
+contract SubgraphServiceV1Storage {}

packages/subgraph-service/package.json

@@ -10,7 +10,7 @@
     "lint": "yarn lint:ts && yarn lint:sol",
     "clean": "rm -rf build cache typechain-types",
     "build": "hardhat compile",
-    "test": "forge test"
+    "test": "forge test && hardhat test"
   },
   "devDependencies": {
     "@graphprotocol/contracts": "workspace:^7.0.0",