Add basic invoke command

Author: tupui

README.md

@@ -18,6 +18,11 @@ soroban.invoke("AAAA...", "increment")
 Identity and Network configurations are automatically pulled from the global
 or local configuration.
 
+It also provides a CLI
+```bash
+soroban invoke CC22IAGPHR4DXI73WSI4L65TTB3F5A2DF7FP5PPNIOLVX5NQWSVR4TID version --source-account=...
+```
+
 > Note: this repository has no affiliation with the Stellar Developer Foundation.
 > The official CLI can be found here https://github.com/stellar/soroban-cli
 > Should this become useful, I am happy to transfer it as well!

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "soroban"
-version = "1.0.0"
+version = "0.2.0"
 description = "CLI for Soroban contracts in Python"
 readme = "README.md"
 requires-python = ">=3.11"

src/soroban/cli.py

@@ -1,7 +1,24 @@
+import soroban
 import typer
 
+
 app = typer.Typer()
 
-invoke = typer.Typer()
 
-app.add_typer(invoke, name="invoke")
+@app.command()
+def invoke(
+    contract_id: str,
+    function_name: str,
+    source_account: str = None,
+):
+    identity = soroban.Identity(secret_key=source_account)
+    res = soroban.invoke(
+        contract_id=contract_id, function_name=function_name, source_account=identity
+    )
+    print(res)
+
+
+# only needed because we have a single command
+@app.callback()
+def callback():
+    pass

src/soroban/models.py

@@ -21,6 +21,8 @@ def _load_configuration(id: str | pathlib.Path, kind: Literal["identity", "netwo
         return local_config
     elif global_config.is_file():
         return global_config
+    else:
+        raise ValueError(f"Cannot find a {kind!r} configuration for {id!r}")
 
 
 class Identity(BaseSettings):