From 80ec8f3a54d938c6bf39b471aa26c4c77f9984a2 Mon Sep 17 00:00:00 2001
From: Simon Binder <simon@journeyapps.com>
Date: Mon, 27 Jan 2025 15:12:53 +0100
Subject: [PATCH] Link PowerSync core extension

---
 sqlite3/assets/wasm/CMakeLists.txt |  7 ++++++-
 sqlite3/assets/wasm/os_web.c       | 11 ++++++++++-
 sqlite3/assets/wasm/sqlite_cfg.h   |  2 +-
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/sqlite3/assets/wasm/CMakeLists.txt b/sqlite3/assets/wasm/CMakeLists.txt
index 6597d86..81a5a41 100644
--- a/sqlite3/assets/wasm/CMakeLists.txt
+++ b/sqlite3/assets/wasm/CMakeLists.txt
@@ -6,6 +6,7 @@ project(${PROJECT_NAME} LANGUAGES C)
 set(triple wasm32-unknown-wasi)
 set(wasi_sysroot "/usr/share/wasi-sysroot" CACHE PATH "Path to wasi sysroot")
 set(clang "clang" CACHE FILEPATH "Path to wasm-capable clang executable")
+set(POWERSYNC_VERSION "0.3.9" CACHE STRING "PowerSync core version to use")
 
 include(FetchContent)
 
@@ -27,6 +28,9 @@ FetchContent_MakeAvailable(sqlite3mc)
 
 file(DOWNLOAD https://raw.githubusercontent.com/sqlite/sqlite/master/src/test_vfstrace.c "${CMAKE_BINARY_DIR}/vfstrace.c")
 
+set(POWERSYNC_A "${CMAKE_BINARY_DIR}/libpowersync-wasm.a")
+file(DOWNLOAD "https://github.com/powersync-ja/powersync-sqlite-core/releases/download/v${POWERSYNC_VERSION}/libpowersync-wasm.a" "${POWERSYNC_A}")
+
 # Generate symbols we need to export from the sqlite3.wasm build
 add_custom_command(
     OUTPUT required_symbols.txt
@@ -88,8 +92,9 @@ macro(base_sqlite3_target name debug crypto)
       -Wl,--import-memory
       --sysroot ${wasi_sysroot}
       ${sources}
+      ${POWERSYNC_A}
       @${CMAKE_CURRENT_BINARY_DIR}/required_symbols.txt
-    DEPENDS ${sources} required_symbols
+    DEPENDS ${sources} ${POWERSYNC_A} required_symbols
     VERBATIM
   )
 
diff --git a/sqlite3/assets/wasm/os_web.c b/sqlite3/assets/wasm/os_web.c
index 4a1df1d..be9c3c9 100644
--- a/sqlite3/assets/wasm/os_web.c
+++ b/sqlite3/assets/wasm/os_web.c
@@ -6,7 +6,16 @@
 #include "bridge.h"
 #include "sqlite3.h"
 
-int sqlite3_os_init(void) { return SQLITE_OK; }
+extern int sqlite3_powersync_init(sqlite3 *db, char **pzErrMsg,
+                                  const sqlite3_api_routines *pApi);
+
+int sqlite3_os_init(void) {
+  int rc = sqlite3_auto_extension((void (*)(void)) & sqlite3_powersync_init);
+  if (rc != SQLITE_OK) {
+    return rc;
+  }
+  return SQLITE_OK;
+}
 
 int sqlite3_os_end(void) { return SQLITE_OK; }
 
diff --git a/sqlite3/assets/wasm/sqlite_cfg.h b/sqlite3/assets/wasm/sqlite_cfg.h
index 74e8dd7..682acbf 100644
--- a/sqlite3/assets/wasm/sqlite_cfg.h
+++ b/sqlite3/assets/wasm/sqlite_cfg.h
@@ -42,7 +42,7 @@
 // Disable things we don't need
 #define SQLITE_OMIT_DEPRECATED
 #define SQLITE_OMIT_PROGRESS_CALLBACK
-#define SQLITE_OMIT_AUTHORIZATION
+// #define SQLITE_OMIT_AUTHORIZATION // This breaks the powersync-core build
 #define SQLITE_UNTESTABLE
 #define SQLITE_OMIT_COMPILEOPTION_DIAGS
 #define SQLITE_OMIT_LOAD_EXTENSION
-- 
2.39.5 (Apple Git-154)