Change representation of blockchain config in Instance API response

Allowed multiple blockchain configs.

docs/openapi.yaml

@@ -918,36 +918,36 @@ components:
           description: Post character limit.
           type: integer
           example: 5000
-        blockchain_id:
-          description: CAIP-2 chain ID.
-          type: string
-          nullable: true
-          example: 'eip155:1'
-        blockchain_explorer_url:
-          description: Blockchain explorer base URL.
-          type: string
-          nullable: true
-        blockchain_contract_address:
-          description: Blockchain contract address.
-          type: string
-          nullable: true
-        blockchain_features:
-          description: Blockchain contract features.
-          type: object
-          nullable: true
-          properties:
-            minter:
-              description: Minter feature flag.
-              type: boolean
-              example: true
-            subscription:
-              description: Subscription feature flag.
-              type: boolean
-              example: true
-        blockchain_info:
-          description: Additional information about blockchain
-          type: object
-          nullable: true
+        blockchains:
+          description: Information about blockchain integrations.
+          type: array
+          items:
+            type: object
+            properties:
+              chain_id:
+                description: CAIP-2 chain ID.
+                type: string
+                example: 'eip155:1'
+              chain_metadata:
+                description: Additional information about blockchain
+                type: object
+                nullable: true
+              contract_address:
+                description: Blockchain contract address.
+                type: string
+                nullable: true
+              features:
+                description: Blockchain features.
+                type: object
+                properties:
+                  minter:
+                    description: Minter feature flag.
+                    type: boolean
+                    example: true
+                  subscriptions:
+                    description: Subscriptions feature flag.
+                    type: boolean
+                    example: true
         ipfs_gateway_url:
           description: IPFS gateway URL.
           type: string

src/config/mod.rs

@@ -2,6 +2,10 @@ mod blockchain;
 mod environment;
 mod main;
 
-pub use blockchain::{EthereumConfig, MoneroConfig};
+pub use blockchain::{
+    BlockchainConfig,
+    EthereumConfig,
+    MoneroConfig,
+};
 pub use environment::Environment;
 pub use main::{parse_config, Config, Instance};

src/mastodon_api/instance/types.rs

@@ -1,14 +1,22 @@
 use serde::Serialize;
 use serde_json::{to_value, Value};
 
-use crate::config::Config;
+use crate::config::{BlockchainConfig, Config};
 use crate::ethereum::contracts::ContractSet;
 use crate::mastodon_api::MASTODON_API_VERSION;
 
 #[derive(Serialize)]
 struct BlockchainFeatures {
     minter: bool,
-    subscription: bool,
+    subscriptions: bool,
+}
+
+#[derive(Serialize)]
+struct BlockchainInfo {
+    chain_id: String,
+    chain_metadata: Option<Value>,
+    contract_address: Option<String>,
+    features: BlockchainFeatures,
 }
 
 #[derive(Serialize)]
@@ -22,11 +30,7 @@ pub struct InstanceInfo {
 
     login_message: String,
     post_character_limit: usize,
-    blockchain_id: Option<String>,
-    blockchain_explorer_url: Option<String>,
-    blockchain_contract_address: Option<String>,
-    blockchain_features: Option<BlockchainFeatures>,
-    blockchain_info: Option<Value>,
+    blockchains: Vec<BlockchainInfo>,
     ipfs_gateway_url: Option<String>,
 }
 
@@ -40,17 +44,45 @@ fn get_full_api_version(version: &str) -> String {
 
 impl InstanceInfo {
     pub fn create(config: &Config, maybe_blockchain: Option<&ContractSet>) -> Self {
-        let ethereum_config = config.blockchain()
-            .and_then(|conf| conf.ethereum_config());
-        let blockchain_features = maybe_blockchain.map(|contract_set| {
-            BlockchainFeatures {
-                minter: contract_set.collectible.is_some(),
-                subscription: contract_set.subscription.is_some(),
-            }
-        });
-        let maybe_blockchain_info = ethereum_config
-            .and_then(|conf| conf.chain_metadata.as_ref())
-            .and_then(|metadata| to_value(metadata).ok());
+        let mut blockchains = vec![];
+        match config.blockchain() {
+            Some(BlockchainConfig::Ethereum(ethereum_config)) => {
+                let features = if let Some(contract_set) = maybe_blockchain {
+                    BlockchainFeatures {
+                        minter: contract_set.collectible.is_some(),
+                        subscriptions: contract_set.subscription.is_some(),
+                    }
+                } else {
+                    BlockchainFeatures {
+                        minter: false,
+                        subscriptions: false,
+                    }
+                };
+                let maybe_chain_metadata = ethereum_config
+                    .chain_metadata.as_ref()
+                    .and_then(|metadata| to_value(metadata).ok());
+                blockchains.push(BlockchainInfo {
+                    chain_id: ethereum_config.chain_id.to_string(),
+                    chain_metadata: maybe_chain_metadata,
+                    contract_address:
+                        Some(ethereum_config.contract_address.clone()),
+                    features: features,
+                });
+            },
+            Some(BlockchainConfig::Monero(monero_config)) => {
+                let features = BlockchainFeatures {
+                    minter: false,
+                    subscriptions: true,
+                };
+                blockchains.push(BlockchainInfo {
+                    chain_id: monero_config.chain_id.to_string(),
+                    chain_metadata: None,
+                    contract_address: None,
+                    features: features,
+                })
+            },
+            None => (),
+        };
         Self {
             uri: config.instance().host(),
             title: config.instance_title.clone(),
@@ -60,15 +92,7 @@ impl InstanceInfo {
             registrations: config.registrations_open,
             login_message: config.login_message.clone(),
             post_character_limit: config.post_character_limit,
-            blockchain_id: ethereum_config
-                .map(|val| val.chain_id.to_string()),
-            blockchain_explorer_url: ethereum_config
-                .and_then(|conf| conf.chain_metadata.as_ref())
-                .and_then(|metadata| metadata.explorer_url.clone()),
-            blockchain_contract_address: ethereum_config
-                .map(|val| val.contract_address.clone()),
-            blockchain_features: blockchain_features,
-            blockchain_info: maybe_blockchain_info,
+            blockchains: blockchains,
             ipfs_gateway_url: config.ipfs_gateway_url.clone(),
         }
     }