Add global SDK logger (#242)

* Add SDK global logger

* Add bindings

* Fix path to internal uniffi log

* Exclude "set_log_stream" from generated RN methods

* Move logger-specific structs to a separate module

* Delegate init_logging to method in logger.rs

* Rename uniffi BindingLogger to UniffiBindingLogger

* Add set_log_stream for dart bindings

* Add SDK logger to Dart bindings

* Rename dart binding logger to DartBindingLogger

* Add rustdocs

* RN bindings: Add manual handling for setLogStream()

* Re-generate dart bindings

* Re-generate RN bindings

* Remove LOG_INIT cell

* Set global maximum log level once on initialization

Return a LiquidSdkError::Generic instead of Anyhow error when initializing log stream on Dart bindings

* Do not panic when initializing binding loggers

* Rename LogStream to Logger

---------

Co-authored-by: Erdem Yerebasmaz <erdem@yerebasmaz.com>

packages/react-native/android/src/main/java/com/breezliquidsdk/BreezLiquidSDKLogStream.kt

@@ -0,0 +1,15 @@
+package com.breezliquidsdk
+
+import breez_liquid_sdk.LogEntry
+import breez_liquid_sdk.Logger
+import com.facebook.react.modules.core.DeviceEventManagerModule.RCTDeviceEventEmitter
+
+class BreezLiquidSDKLogger(private val emitter: RCTDeviceEventEmitter) : Logger {
+    companion object {
+        var emitterName = "breezLiquidSdkLog"
+    }
+
+    override fun log(l: LogEntry) {
+        emitter.emit(emitterName, readableMapOf(l))
+    }
+}

packages/react-native/android/src/main/java/com/breezliquidsdk/BreezLiquidSDKMapper.kt

@@ -226,6 +226,43 @@ fun asLnInvoiceList(arr: ReadableArray): List<LnInvoice> {
     return list
 }
 
+fun asLogEntry(logEntry: ReadableMap): LogEntry? {
+    if (!validateMandatoryFields(
+            logEntry,
+            arrayOf(
+                "line",
+                "level",
+            ),
+        )
+    ) {
+        return null
+    }
+    val line = logEntry.getString("line")!!
+    val level = logEntry.getString("level")!!
+    return LogEntry(
+        line,
+        level,
+    )
+}
+
+fun readableMapOf(logEntry: LogEntry): ReadableMap {
+    return readableMapOf(
+        "line" to logEntry.line,
+        "level" to logEntry.level,
+    )
+}
+
+fun asLogEntryList(arr: ReadableArray): List<LogEntry> {
+    val list = ArrayList<LogEntry>()
+    for (value in arr.toArrayList()) {
+        when (value) {
+            is ReadableMap -> list.add(asLogEntry(value)!!)
+            else -> throw LiquidSdkException.Generic(errUnexpectedType("${value::class.java.name}"))
+        }
+    }
+    return list
+}
+
 fun asPayment(payment: ReadableMap): Payment? {
     if (!validateMandatoryFields(
             payment,

packages/react-native/android/src/main/java/com/breezliquidsdk/BreezLiquidSDKModule.kt

@@ -55,6 +55,21 @@ class BreezLiquidSDKModule(reactContext: ReactApplicationContext) : ReactContext
         }
     }
 
+    @ReactMethod
+    fun setLogger(promise: Promise) {
+        executor.execute {
+            try {
+                val emitter = reactApplicationContext.getJSModule(RCTDeviceEventEmitter::class.java)
+
+                setLogger(BreezLiquidSDKLogger(emitter))
+                promise.resolve(readableMapOf("status" to "ok"))
+            } catch (e: Exception) {
+                e.printStackTrace()
+                promise.reject(e.javaClass.simpleName.replace("Exception", "Error"), e.message, e)
+            }
+        }
+    }
+
     @ReactMethod
     fun connect(
         req: ReadableMap,