1 files changed, 211 insertions, 4 deletions
diff --git a/crates/shirabe/src/io/io_interface.rs b/crates/shirabe/src/io/io_interface.rs
index 1d97700..aac1488 100644
--- a/crates/shirabe/src/io/io_interface.rs
+++ b/crates/shirabe/src/io/io_interface.rs
@@ -2,8 +2,9 @@
 
 use crate::config::Config;
 use indexmap::IndexMap;
-use shirabe_external_packages::psr::log::LoggerInterface;
 use shirabe_php_shim::PhpMixed;
+use std::cell::RefCell;
+use std::rc::Rc;
 
 pub const QUIET: i64 = 1;
 pub const NORMAL: i64 = 2;
@@ -11,7 +12,18 @@ pub const VERBOSE: i64 = 4;
 pub const VERY_VERBOSE: i64 = 8;
 pub const DEBUG: i64 = 16;
 
-pub trait IOInterface: LoggerInterface + std::fmt::Debug {
+// In PHP this is `IOInterface extends LoggerInterface`. Shirabe does not
+// integrate with the PHP runtime, so there is no need for a separate
+// `LoggerInterface` entity on the Rust side: the LoggerInterface methods that
+// Composer actually invokes through an IO are folded directly into this trait
+// (each is annotated as originating from LoggerInterface).
+//
+// On the Rust side the interface is split into an immutable part (`&self`
+// methods, below) and a mutable part (`IOInterfaceMutable`, the `&mut self`
+// methods). The shared handle `Rc<RefCell<dyn IOInterface>>` implements only
+// `IOInterfaceImmutable`, so the mutating methods are reachable only via
+// `io.borrow_mut()` — enforced at compile time rather than at runtime.
+pub trait IOInterfaceImmutable: std::fmt::Debug {
     fn is_interactive(&self) -> bool;
 
     fn is_verbose(&self) -> bool;
@@ -112,6 +124,19 @@ pub trait IOInterface: LoggerInterface + std::fmt::Debug {
 
     fn get_authentication(&self, repository_name: &str) -> IndexMap<String, Option<String>>;
 
+    // From PHP `LoggerInterface` (which `IOInterface` extends). Only the
+    // variants Composer actually calls through an IO are kept.
+    fn error(&self, message: &str, context: &[(&str, &str)]);
+
+    fn warning(&self, message: &str, context: &[(&str, &str)]);
+
+    fn debug(&self, message: &str, context: &[(&str, &str)]);
+}
+
+// The `&mut self` part of PHP `IOInterface`. The shared handle does NOT
+// implement this trait, so these methods can only be reached through
+// `io.borrow_mut()`.
+pub trait IOInterfaceMutable {
     fn set_authentication(
         &mut self,
         repository_name: String,
@@ -120,8 +145,190 @@ pub trait IOInterface: LoggerInterface + std::fmt::Debug {
     );
 
     fn load_configuration(&mut self, config: &mut Config) -> anyhow::Result<()>;
+}
+
+// PHP `IOInterface`. This is the type used for the shared trait object
+// `dyn IOInterface`; its vtable carries both the immutable and mutable methods.
+pub trait IOInterface: IOInterfaceImmutable + IOInterfaceMutable {}
+
+// Shared-ownership handle for a PHP IO instance (reference semantics). It
+// exposes only the immutable surface; mutating methods (`set_authentication`,
+// `load_configuration`) are reached via `io.borrow_mut()`. Because the handle
+// does not implement `IOInterfaceMutable`, calling those directly on the handle
+// is a compile error rather than a runtime panic.
+impl IOInterfaceImmutable for Rc<RefCell<dyn IOInterface>> {
+    fn is_interactive(&self) -> bool {
+        self.borrow().is_interactive()
+    }
+
+    fn is_verbose(&self) -> bool {
+        self.borrow().is_verbose()
+    }
+
+    fn is_very_verbose(&self) -> bool {
+        self.borrow().is_very_verbose()
+    }
+
+    fn is_debug(&self) -> bool {
+        self.borrow().is_debug()
+    }
+
+    fn is_decorated(&self) -> bool {
+        self.borrow().is_decorated()
+    }
+
+    fn write(&self, message: &str) {
+        self.borrow().write(message)
+    }
+
+    fn write2(&self, message: &str, newline: bool) {
+        self.borrow().write2(message, newline)
+    }
+
+    fn write_no_newline(&self, message: &str) {
+        self.borrow().write_no_newline(message)
+    }
+
+    fn write3(&self, message: &str, newline: bool, verbosity: i64) {
+        self.borrow().write3(message, newline, verbosity)
+    }
+
+    fn write_error(&self, message: &str) {
+        self.borrow().write_error(message)
+    }
+
+    fn write_error2(&self, message: &str, newline: bool) {
+        self.borrow().write_error2(message, newline)
+    }
+
+    fn write_error_no_newline(&self, message: &str) {
+        self.borrow().write_error_no_newline(message)
+    }
+
+    fn write_error3(&self, message: &str, newline: bool, verbosity: i64) {
+        self.borrow().write_error3(message, newline, verbosity)
+    }
+
+    fn write_raw(&self, message: &str) {
+        self.borrow().write_raw(message)
+    }
+
+    fn write_raw2(&self, message: &str, newline: bool) {
+        self.borrow().write_raw2(message, newline)
+    }
+
+    fn write_raw3(&self, message: &str, newline: bool, verbosity: i64) {
+        self.borrow().write_raw3(message, newline, verbosity)
+    }
+
+    fn write_error_raw(&self, message: &str) {
+        self.borrow().write_error_raw(message)
+    }
+
+    fn write_error_raw2(&self, message: &str, newline: bool) {
+        self.borrow().write_error_raw2(message, newline)
+    }
+
+    fn write_error_raw3(&self, message: &str, newline: bool, verbosity: i64) {
+        self.borrow().write_error_raw3(message, newline, verbosity)
+    }
+
+    fn overwrite(&self, message: &str) {
+        self.borrow().overwrite(message)
+    }
+
+    fn overwrite2(&self, message: &str, newline: bool) {
+        self.borrow().overwrite2(message, newline)
+    }
+
+    fn overwrite3(&self, message: &str, newline: bool, size: Option<i64>) {
+        self.borrow().overwrite3(message, newline, size)
+    }
+
+    fn overwrite4(&self, message: &str, newline: bool, size: Option<i64>, verbosity: i64) {
+        self.borrow().overwrite4(message, newline, size, verbosity)
+    }
+
+    fn overwrite_error(&self, message: &str) {
+        self.borrow().overwrite_error(message)
+    }
+
+    fn overwrite_error2(&self, message: &str, newline: bool) {
+        self.borrow().overwrite_error2(message, newline)
+    }
+
+    fn overwrite_error3(&self, message: &str, newline: bool, size: Option<i64>) {
+        self.borrow().overwrite_error3(message, newline, size)
+    }
+
+    fn overwrite_error4(&self, message: &str, newline: bool, size: Option<i64>, verbosity: i64) {
+        self.borrow()
+            .overwrite_error4(message, newline, size, verbosity)
+    }
+
+    fn ask(&self, question: String, default: PhpMixed) -> PhpMixed {
+        self.borrow().ask(question, default)
+    }
+
+    fn ask_confirmation(&self, question: String, default: bool) -> bool {
+        self.borrow().ask_confirmation(question, default)
+    }
+
+    fn ask_and_validate(
+        &self,
+        question: String,
+        validator: Box<dyn Fn(PhpMixed) -> PhpMixed>,
+        attempts: Option<i64>,
+        default: PhpMixed,
+    ) -> PhpMixed {
+        self.borrow()
+            .ask_and_validate(question, validator, attempts, default)
+    }
+
+    fn ask_and_hide_answer(&self, question: String) -> Option<String> {
+        self.borrow().ask_and_hide_answer(question)
+    }
+
+    fn select(
+        &self,
+        question: String,
+        choices: Vec<String>,
+        default: PhpMixed,
+        attempts: PhpMixed,
+        error_message: String,
+        multiselect: bool,
+    ) -> PhpMixed {
+        self.borrow().select(
+            question,
+            choices,
+            default,
+            attempts,
+            error_message,
+            multiselect,
+        )
+    }
+
+    fn get_authentications(&self) -> IndexMap<String, IndexMap<String, Option<String>>> {
+        self.borrow().get_authentications()
+    }
+
+    fn has_authentication(&self, repository_name: &str) -> bool {
+        self.borrow().has_authentication(repository_name)
+    }
+
+    fn get_authentication(&self, repository_name: &str) -> IndexMap<String, Option<String>> {
+        self.borrow().get_authentication(repository_name)
+    }
+
+    fn error(&self, message: &str, context: &[(&str, &str)]) {
+        self.borrow().error(message, context)
+    }
+
+    fn warning(&self, message: &str, context: &[(&str, &str)]) {
+        self.borrow().warning(message, context)
+    }
 
-    fn clone_box(&self) -> Box<dyn IOInterface> {
-        todo!()
+    fn debug(&self, message: &str, context: &[(&str, &str)]) {
+        self.borrow().debug(message, context)
     }
 }