feat: add filecoin chains (#2177)

* feat: add filecoin chains

* formatting

* fix: add missing match

---------

Co-authored-by: Georgios Konstantopoulos <me@gakonst.com>

ethers-core/src/types/chain.rs

@@ -109,6 +109,9 @@ pub enum Chain {
     Emerald = 42262,
     EmeraldTestnet = 42261,
 
+    FilecoinMainnet = 314,
+    FilecoinHyperspaceTestnet = 3141,
+
     Avalanche = 43114,
     #[strum(serialize = "fuji", serialize = "avalanche-fuji")]
     AvalancheFuji = 43113,
@@ -248,8 +251,9 @@ impl Chain {
             Emerald => 6_000,
             Dev | AnvilHardhat => 200,
             Celo | CeloAlfajores | CeloBaklava => 5_000,
-
+            FilecoinHyperspaceTestnet | FilecoinMainnet => 30_000,
-            // Explicitly exhaustive. See NB above.
+            // Explictly handle all network to make it easier not to forget this match when new
+            // networks are added.
             Morden | Ropsten | Rinkeby | Goerli | Kovan | XDai | Chiado | Sepolia | Moonbase |
             MoonbeamDev | Optimism | OptimismGoerli | OptimismKovan | Poa | Sokol | Rsk |
             EmeraldTestnet => return None,
@@ -294,14 +298,20 @@ impl Chain {
             CeloBaklava => true,
 
             // Known EIP-1559 chains
-            Mainnet | Goerli | Sepolia | Polygon | PolygonMumbai | Avalanche | AvalancheFuji => {
+            Mainnet |
-                false
+            Goerli |
-            }
+            Sepolia |
+            Polygon |
+            PolygonMumbai |
+            Avalanche |
+            AvalancheFuji |
+            FilecoinHyperspaceTestnet => false,
 
             // Unknown / not applicable, default to false for backwards compatibility
             Dev | AnvilHardhat | Morden | Ropsten | Rinkeby | Cronos | CronosTestnet | Kovan |
             Sokol | Poa | XDai | Moonbeam | MoonbeamDev | Moonriver | Moonbase | Evmos |
-            EvmosTestnet | Chiado | Aurora | AuroraTestnet | Canto | CantoTestnet => false,
+            EvmosTestnet | Chiado | Aurora | AuroraTestnet | Canto | CantoTestnet |
+            FilecoinMainnet => false,
         }
     }
 
@@ -379,6 +389,9 @@ impl Chain {
             Chiado => {
                 ("https://blockscout.chiadochain.net/api", "https://blockscout.chiadochain.net")
             }
+            FilecoinHyperspaceTestnet => {
+                ("https://api.hyperspace.node.glif.io/rpc/v1", "https://hyperspace.filfox.info")
+            }
             Sokol => ("https://blockscout.com/poa/sokol/api", "https://blockscout.com/poa/sokol"),
             Poa => ("https://blockscout.com/poa/core/api", "https://blockscout.com/poa/core"),
             Rsk => ("https://blockscout.com/rsk/mainnet/api", "https://blockscout.com/rsk/mainnet"),
@@ -408,9 +421,11 @@ impl Chain {
                 "https://testnet-explorer.canto.neobase.one/",
                 "https://testnet-explorer.canto.neobase.one/api",
             ),
-
+            AnvilHardhat | Dev | Morden | MoonbeamDev | FilecoinMainnet => {
-            // Explicitly exhaustive. See NB above.
+                // this is explicitly exhaustive so we don't forget to add new urls when adding a
-            AnvilHardhat | Dev | Morden | MoonbeamDev => return None,
+                // new chain
+                return None
+            }
         };
 
         Some(urls)
@@ -452,7 +467,6 @@ impl Chain {
             Celo |
             CeloAlfajores |
             CeloBaklava => "ETHERSCAN_API_KEY",
-
             Avalanche | AvalancheFuji => "SNOWTRACE_API_KEY",
 
             Polygon | PolygonMumbai => "POLYGONSCAN_API_KEY",
@@ -464,8 +478,21 @@ impl Chain {
             Canto | CantoTestnet => "BLOCKSCOUT_API_KEY",
 
             // Explicitly exhaustive. See NB above.
-            XDai | Chiado | Sepolia | Rsk | Sokol | Poa | Oasis | Emerald | EmeraldTestnet |
+            XDai |
-            Evmos | EvmosTestnet | AnvilHardhat | Dev => return None,
+            Chiado |
+            Sepolia |
+            Rsk |
+            Sokol |
+            Poa |
+            Oasis |
+            Emerald |
+            EmeraldTestnet |
+            Evmos |
+            EvmosTestnet |
+            AnvilHardhat |
+            Dev |
+            FilecoinMainnet |
+            FilecoinHyperspaceTestnet => return None,
         };
 
         Some(api_key_name)