feat: gpauth support macos

crates/gpapi/src/logger.rs

@@ -0,0 +1,49 @@
+use std::sync::OnceLock;
+
+use anyhow::bail;
+use env_logger::Logger;
+use log::Level;
+use log_reload::{ReloadHandle, ReloadLog};
+
+static LOG_HANDLE: OnceLock<ReloadHandle<log_reload::LevelFilter<Logger>>> = OnceLock::new();
+
+pub fn init(level: Level) -> anyhow::Result<()> {
+  // Initialize the env_logger and global max level to trace, the logs will be
+  // filtered by the outer logger
+  let logger = env_logger::builder().filter_level(log::LevelFilter::Trace).build();
+  init_with_logger(level, logger)?;
+
+  Ok(())
+}
+
+pub fn init_with_logger(level: Level, logger: Logger) -> anyhow::Result<()> {
+  if let Some(_) = LOG_HANDLE.get() {
+    bail!("Logger already initialized")
+  } else {
+    log::set_max_level(log::LevelFilter::Trace);
+
+    // Create a new logger that will filter the logs based on the max level
+    let level_filter_logger = log_reload::LevelFilter::new(level, logger);
+
+    let reload_log = ReloadLog::new(level_filter_logger);
+    let handle = reload_log.handle();
+
+    // Register the logger to be used by the log crate
+    log::set_boxed_logger(Box::new(reload_log))?;
+    LOG_HANDLE
+      .set(handle)
+      .map_err(|_| anyhow::anyhow!("Failed to set the logger"))?;
+  }
+
+  Ok(())
+}
+
+pub fn set_max_level(level: Level) -> anyhow::Result<()> {
+  let Some(handle) = LOG_HANDLE.get() else {
+    bail!("Logger not initialized")
+  };
+
+  handle
+    .modify(|logger| logger.set_level(level))
+    .map_err(|e| anyhow::anyhow!(e))
+}