chore: clean up interface for info::shared::fetch

Follow-up to #1780,
implementing @leighmcculloch's [suggestions].

  [suggestions]: #1780 (review)

cmd/soroban-cli/src/commands/contract/bindings/typescript.rs

@@ -60,13 +60,14 @@ impl NetworkRunnable for Cmd {
     ) -> Result<(), Error> {
         let print = Print::new(global_args.is_some_and(|a| a.quiet));
 
-        let (spec, contract_address, network) =
-            wasm_or_contract::fetch_wasm(&self.wasm_or_hash_or_contract_id, &print).await?;
+        let wasm_or_contract::Fetched { contract, source } =
+            wasm_or_contract::fetch(&self.wasm_or_hash_or_contract_id, &print).await?;
 
-        let spec = if let Some(spec) = spec {
-            Spec::new(&spec)?.spec
-        } else {
-            soroban_spec::read::parse_raw(&soroban_sdk::token::StellarAssetSpec::spec_xdr())?
+        let spec = match contract {
+            wasm_or_contract::Contract::Wasm { wasm_bytes } => Spec::new(&wasm_bytes)?.spec,
+            wasm_or_contract::Contract::StellarAssetContract => {
+                soroban_spec::read::parse_raw(&soroban_sdk::token::StellarAssetSpec::spec_xdr())?
+            }
         };
 
         if self.output_dir.is_file() {
@@ -88,12 +89,20 @@ impl NetworkRunnable for Cmd {
         let contract_name = &file_name
             .to_str()
             .ok_or_else(|| Error::NotUtf8(file_name.to_os_string()))?;
-        if let Some(contract_address) = contract_address.clone() {
-            print.infoln(format!("Embedding contract address: {contract_address}"));
-        }
+        let (resolved_address, network) = match source {
+            wasm_or_contract::Source::Contract {
+                resolved_address,
+                network,
+            } => {
+                print.infoln(format!("Embedding contract address: {resolved_address}"));
+                (Some(resolved_address), Some(network))
+            }
+            wasm_or_contract::Source::Wasm { network, .. } => (None, Some(network)),
+            wasm_or_contract::Source::File { .. } => (None, None),
+        };
         p.init(
             contract_name,
-            contract_address.as_deref(),
+            resolved_address.as_deref(),
             network.as_ref().map(|n| n.rpc_url.as_ref()),
             network.as_ref().map(|n| n.network_passphrase.as_ref()),
             &spec,

cmd/soroban-cli/src/commands/contract/info/env_meta.rs

@@ -9,7 +9,7 @@ use crate::{
     commands::{
         contract::info::{
             env_meta::Error::{NoEnvMetaPresent, NoSACEnvMeta},
-            shared::{self, fetch_wasm, MetasInfoOutput},
+            shared::{self, fetch, Fetched, MetasInfoOutput},
         },
         global,
     },
@@ -43,12 +43,12 @@ pub enum Error {
 impl Cmd {
     pub async fn run(&self, global_args: &global::Args) -> Result<String, Error> {
         let print = Print::new(global_args.quiet);
-        let (bytes, ..) = fetch_wasm(&self.common, &print).await?;
+        let Fetched { contract, .. } = fetch(&self.common, &print).await?;
 
-        let Some(bytes) = bytes else {
-            return Err(NoSACEnvMeta());
+        let spec = match contract {
+            shared::Contract::Wasm { wasm_bytes } => Spec::new(&wasm_bytes)?,
+            _ => return Err(NoSACEnvMeta()),
         };
-        let spec = Spec::new(&bytes)?;
 
         let Some(env_meta_base64) = spec.env_meta_base64 else {
             return Err(NoEnvMetaPresent());

cmd/soroban-cli/src/commands/contract/info/interface.rs

@@ -1,8 +1,7 @@
 use std::fmt::Debug;
 
 use crate::commands::contract::info::interface::Error::NoInterfacePresent;
-use crate::commands::contract::info::shared;
-use crate::commands::contract::info::shared::fetch_wasm;
+use crate::commands::contract::info::shared::{self, fetch, Fetched};
 use crate::commands::global;
 use crate::print::Print;
 use clap::{command, Parser};
@@ -47,18 +46,21 @@ pub enum Error {
 impl Cmd {
     pub async fn run(&self, global_args: &global::Args) -> Result<String, Error> {
         let print = Print::new(global_args.quiet);
-        let (bytes, ..) = fetch_wasm(&self.common, &print).await?;
+        let Fetched { contract, .. } = fetch(&self.common, &print).await?;
 
-        let (base64, spec) = if bytes.is_none() {
-            Spec::spec_to_base64(&soroban_sdk::token::StellarAssetSpec::spec_xdr())?
-        } else {
-            let spec = Spec::new(&bytes.unwrap())?;
+        let (base64, spec) = match contract {
+            shared::Contract::Wasm { wasm_bytes } => {
+                let spec = Spec::new(&wasm_bytes)?;
 
-            if spec.env_meta_base64.is_none() {
-                return Err(NoInterfacePresent());
-            }
+                if spec.env_meta_base64.is_none() {
+                    return Err(NoInterfacePresent());
+                }
 
-            (spec.spec_base64.unwrap(), spec.spec)
+                (spec.spec_base64.unwrap(), spec.spec)
+            }
+            shared::Contract::StellarAssetContract => {
+                Spec::spec_to_base64(&soroban_sdk::token::StellarAssetSpec::spec_xdr())?
+            }
         };
 
         let res = match self.output {

cmd/soroban-cli/src/commands/contract/info/meta.rs

@@ -1,8 +1,7 @@
 use std::fmt::Debug;
 
 use crate::commands::contract::info::meta::Error::{NoMetaPresent, NoSACMeta};
-use crate::commands::contract::info::shared;
-use crate::commands::contract::info::shared::{fetch_wasm, MetasInfoOutput};
+use crate::commands::contract::info::shared::{self, fetch, Fetched, MetasInfoOutput};
 use crate::commands::global;
 use crate::print::Print;
 use clap::{command, Parser};
@@ -36,12 +35,12 @@ pub enum Error {
 impl Cmd {
     pub async fn run(&self, global_args: &global::Args) -> Result<String, Error> {
         let print = Print::new(global_args.quiet);
-        let (bytes, ..) = fetch_wasm(&self.common, &print).await?;
+        let Fetched { contract, .. } = fetch(&self.common, &print).await?;
 
-        let Some(bytes) = bytes else {
-            return Err(NoSACMeta());
+        let spec = match contract {
+            shared::Contract::Wasm { wasm_bytes } => Spec::new(&wasm_bytes)?,
+            _ => return Err(NoSACMeta()),
         };
-        let spec = Spec::new(&bytes)?;
 
         let Some(meta_base64) = spec.meta_base64 else {
             return Err(NoMetaPresent());

cmd/soroban-cli/src/commands/contract/info/shared.rs

@@ -83,16 +83,51 @@ pub enum Error {
     Locator(#[from] locator::Error),
 }
 
-pub async fn fetch_wasm(
-    args: &Args,
-    print: &Print,
-) -> Result<(Option<Vec<u8>>, Option<String>, Option<Network>), Error> {
+pub struct Fetched {
+    pub contract: Contract,
+    pub source: Source,
+}
+
+pub enum Contract {
+    Wasm { wasm_bytes: Vec<u8> },
+    StellarAssetContract,
+}
+
+pub enum Source {
+    File {
+        path: PathBuf,
+    },
+    Wasm {
+        hash: String,
+        network: Network,
+    },
+    Contract {
+        resolved_address: String,
+        network: Network,
+    },
+}
+
+impl Source {
+    pub fn network(&self) -> Option<&Network> {
+        match self {
+            Source::File { .. } => None,
+            Source::Wasm { ref network, .. } | Source::Contract { ref network, .. } => {
+                Some(network)
+            }
+        }
+    }
+}
+
+pub async fn fetch(args: &Args, print: &Print) -> Result<Fetched, Error> {
     // Check if a local WASM file path is provided
     if let Some(path) = &args.wasm {
         // Read the WASM file and return its contents
         print.infoln("Loading contract spec from file...");
         let wasm_bytes = wasm::Args { wasm: path.clone() }.read()?;
-        return Ok((Some(wasm_bytes), None, None));
+        return Ok(Fetched {
+            contract: Contract::Wasm { wasm_bytes },
+            source: Source::File { path: path.clone() },
+        });
     }
 
     // If no local wasm, then check for wasm_hash and fetch from the network
@@ -116,21 +151,36 @@ pub async fn fetch_wasm(
         print.globeln(format!(
             "Downloading contract spec for wasm hash: {wasm_hash}"
         ));
-        Ok((
-            Some(get_remote_wasm_from_hash(&client, &hash).await?),
-            None,
-            Some(network.clone()),
-        ))
+        let wasm_bytes = get_remote_wasm_from_hash(&client, &hash).await?;
+        Ok(Fetched {
+            contract: Contract::Wasm { wasm_bytes },
+            source: Source::Wasm {
+                hash: wasm_hash.clone(),
+                network: network.clone(),
+            },
+        })
     } else if let Some(contract_id) = &args.contract_id {
         let contract_id =
             contract_id.resolve_contract_id(&args.locator, &network.network_passphrase)?;
-        let contract_address = xdr::ScAddress::Contract(xdr::Hash(contract_id.0)).to_string();
-        print.globeln(format!("Downloading contract spec: {contract_address}"));
+        let derived_address = xdr::ScAddress::Contract(xdr::Hash(contract_id.0)).to_string();
+        print.globeln(format!("Downloading contract spec: {derived_address}"));
         let res = wasm::fetch_from_contract(&contract_id, network).await;
         if let Some(ContractIsStellarAsset) = res.as_ref().err() {
-            return Ok((None, Some(contract_address), Some(network.clone())));
+            return Ok(Fetched {
+                contract: Contract::StellarAssetContract,
+                source: Source::Contract {
+                    resolved_address: derived_address,
+                    network: network.clone(),
+                },
+            });
         }
-        Ok((Some(res?), Some(contract_address), Some(network.clone())))
+        Ok(Fetched {
+            contract: Contract::Wasm { wasm_bytes: res? },
+            source: Source::Contract {
+                resolved_address: derived_address,
+                network: network.clone(),
+            },
+        })
     } else {
         return Err(Error::MalformedWasmOrWasmHashOrContractId);
     }