[holds-tokens] Combined meebits strat (snapshot-labs#85)

* Fix example and readme in meebitsdao strategy

* holding token strategy

* meebit strat not working

* fix rpc issue, but strat still broken

* snapshot voting working

* changes to readme

* change readme

* rever package-lock.json

* fetching the block number if we are not using latest

* updating readme

* updating token strategy to utilize multicall and erc20-with-balance

* remove console.log

* Update src/strategies/holds-tokens/examples.json

Co-authored-by: Chaitanya <[email protected]>

* add comma to example

Co-authored-by: Josh Peters <[email protected]>
Co-authored-by: Patrick Lu <[email protected]>
Co-authored-by: lightninglu10 <[email protected]>
Co-authored-by: Chaitanya <[email protected]>

src/strategies/holds-tokens/README.md

@@ -0,0 +1,14 @@
+# holds-tokens
+
+This strategy return the balances of the voters for a specific ERC20 or ERC721 and maps them to the number of votes that voter gets based on holding a set of tokens.
+
+Here is an example of parameters:
+
+```json
+{
+  "tokenAddresses": [
+    {"address": "0x7Bd29408f11D2bFC23c34f18275bBf23bB716Bc7", "network": "1", "decimals": 0, "minBalance": 1},
+    {"address": "0xc34cbca32e355636c7f52dd8beab0af2396ebd79", "network": "137", "decimals": 0, "minBalance": 1}
+  ]
+}
+```

src/strategies/holds-tokens/examples.json

@@ -0,0 +1,24 @@
+[
+  {
+    "name": "Example query",
+    "strategy": {
+      "name": "holds-tokens",
+      "params": {
+        "symbol": "ABC",
+        "tokenAddresses": [
+          {"address": "0x7Bd29408f11D2bFC23c34f18275bBf23bB716Bc7", "network": "1", "decimals": 0, "minBalance": 0},
+          {"address": "0xc34cbca32e355636c7f52dd8beab0af2396ebd79", "network": "137", "decimals": 0, "minBalance": 0}
+        ]
+      }
+    },
+    "network": "1",
+    "addresses": [
+      "0xC5e38233Cc0D7CFf9340e6139367aBA498EC9b18",
+      "0x2009a752a50D3CDe486d7b5921944377B729E747",
+      "0x7b15e6c439b27a553b65a9904ce571da6691a0fb",
+      "0x8d2f3a76a76f055d62a931678ab16b042e7badeb",
+      "0xEDe64a571CFe98B936271B935a955620f387E05A"
+    ],
+    "snapshot": 13317369
+  }
+]

src/strategies/holds-tokens/index.ts

@@ -0,0 +1,41 @@
+import { strategy as multichainStrategy } from '../multichain';
+
+export const author = 'lightninglu10';
+export const version = '0.1.0';
+
+export async function strategy(
+  space,
+  network,
+  provider,
+  addresses,
+  options,
+  snapshot
+) {
+  const tokens = options.tokenAddresses || [];
+
+  options.strategies = tokens.map((token) => ({
+    "name": "erc20-with-balance",
+    "network": token.network,
+    "params": {
+      "address": token.address,
+      "decimals": token.decimals,
+      "minBalance": token.minBalance
+    }
+  }));
+
+  const scores: any = await multichainStrategy(
+    space,
+    network,
+    provider,
+    addresses,
+    options,
+    snapshot  
+  );
+
+  return Object.fromEntries(
+    Object.entries(scores).map((address: any) => [
+      address[0],
+      (address[1] === tokens.length) ? 1 : 0
+    ])
+  );
+}

src/strategies/index.ts

@@ -144,6 +144,7 @@ import * as eglVote from './egl-vote';
 import * as mcnFarm from './mcn-farm';
 import * as snowswap from './snowswap';
 import * as meebitsdao from './meebitsdao';
+import * as holdsTokens from './holds-tokens';
 import * as crucibleERC20BalanceOf from './crucible-erc20-balance-of';
 import * as hasrock from './has-rock';
 import * as flexaCapacityStaking from './flexa-capacity-staking';
@@ -309,6 +310,7 @@ const strategies = {
   'hopr-staking': hoprStaking,
   'hopr-bridged-balance': hoprBridgedBalance,
   'occ-stake-of': occStakeOf,
+  'holds-tokens': holdsTokens,
   'loot-character-guilds': lootCharacterGuilds
 };