Added lua methods to access track data

lua/browser.lua

@@ -8,6 +8,7 @@ local styles = require("styles")
 local playback = require("playback")
 local theme = require("theme")
 local screen = require("screen")
+local database = require("database")
 
 return screen:new{
     create_ui = function(self)
@@ -101,6 +102,10 @@ return screen:new{
                         })
                     else
                         queue.clear()
+                        local track = database.track_by_id(contents)
+                        if (track) then
+                            print("Track saved position: ", track.saved_position)
+                        end
                         queue.add(contents)
                         playback.playing:set(true)
                         backstack.push(playing:new())

src/tangara/lua/lua_database.cpp

@@ -73,6 +73,56 @@ static auto indexes(lua_State* state) -> int {
   return 1;
 }
 
+auto pushTagValue(lua_State* L, const database::TagValue& val) -> void {
+  std::visit(
+      [&](auto&& arg) {
+        using T = std::decay_t<decltype(arg)>;
+        if constexpr (std::is_same_v<T, std::pmr::string>) {
+          lua_pushlstring(L, arg.data(), arg.size());
+        } else if constexpr (std::is_same_v<
+                                 T, std::span<const std::pmr::string>>) {
+          lua_createtable(L, 0, arg.size());
+          for (const auto& i : arg) {
+            lua_pushlstring(L, i.data(), i.size());
+            lua_pushboolean(L, true);
+            lua_rawset(L, -3);
+          }
+        } else if constexpr (std::is_same_v<T, uint32_t>) {
+          lua_pushinteger(L, arg);
+        } else {
+          lua_pushnil(L);
+        }
+      },
+      val);
+}
+
+static void pushTrack(lua_State* L, const database::Track& track) {
+  lua_newtable(L);
+
+  lua_pushliteral(L, "tags");
+  lua_newtable(L);
+  for (const auto& tag : track.tags().allPresent()) {
+    lua_pushstring(L, database::tagName(tag).c_str());
+    pushTagValue(L, track.tags().get(tag));
+    lua_settable(L, -3);
+  }
+  lua_settable(L, -3);
+
+  lua_pushliteral(L, "id");
+  lua_pushinteger(L, track.data().id);
+  lua_settable(L, -3);
+
+  lua_pushliteral(L, "filepath");
+  lua_pushstring(L, track.data().filepath.c_str());
+  lua_settable(L, -3);
+
+  lua_pushliteral(L, "saved_position");
+  lua_pushinteger(L, track.data().last_position);
+  lua_settable(L, -3);
+
+
+}
+
 static auto version(lua_State* L) -> int {
   Bridge* instance = Bridge::Get(L);
   auto db = instance->services().database().lock();
@@ -111,9 +161,29 @@ static auto update(lua_State* L) -> int {
   return 0;
 }
 
+static auto track_by_id(lua_State* L) -> int {
+  auto id = luaL_checkinteger(L, -1);
+
+  Bridge* instance = Bridge::Get(L);
+  auto db = instance->services().database().lock();
+  if (!db) {
+    return 0;
+  }
+
+  auto track = db->getTrack(id);
+  if (!track) {
+    return 0;
+  }
+
+  pushTrack(L, *track);
+
+  return 1;
+}
+
 static const struct luaL_Reg kDatabaseFuncs[] = {
     {"indexes", indexes},   {"version", version}, {"size", size},
-    {"recreate", recreate}, {"update", update},   {NULL, NULL}};
+    {"recreate", recreate}, {"update", update},   {"track_by_id", track_by_id},
+    {NULL, NULL}};
 
 /*
  * Struct to be used as userdata for the Lua representation of database records.

src/tangara/lua/lua_database.hpp

@@ -14,6 +14,8 @@ namespace lua {
 
 auto db_check_iterator(lua_State*, int stack_pos) -> database::Iterator*;
 
+auto pushTagValue(lua_State* L, const database::TagValue& val) -> void; 
+
 auto RegisterDatabaseModule(lua_State*) -> void;
 
 }  // namespace lua

src/tangara/lua/property.cpp

@@ -19,6 +19,7 @@
 #include "lauxlib.h"
 #include "lua.h"
 #include "lua.hpp"
+#include "lua/lua_database.hpp"
 #include "lua/lua_thread.hpp"
 #include "lvgl.h"
 #include "memory_resource.hpp"
@@ -240,29 +241,6 @@ auto Property::set(const LuaValue& val) -> bool {
   return true;
 }
 
-static auto pushTagValue(lua_State* L, const database::TagValue& val) -> void {
-  std::visit(
-      [&](auto&& arg) {
-        using T = std::decay_t<decltype(arg)>;
-        if constexpr (std::is_same_v<T, std::pmr::string>) {
-          lua_pushlstring(L, arg.data(), arg.size());
-        } else if constexpr (std::is_same_v<
-                                 T, std::span<const std::pmr::string>>) {
-          lua_createtable(L, 0, arg.size());
-          for (const auto& i : arg) {
-            lua_pushlstring(L, i.data(), i.size());
-            lua_pushboolean(L, true);
-            lua_rawset(L, -3);
-          }
-        } else if constexpr (std::is_same_v<T, uint32_t>) {
-          lua_pushinteger(L, arg);
-        } else {
-          lua_pushnil(L);
-        }
-      },
-      val);
-}
-
 static void pushTrack(lua_State* L, const audio::TrackInfo& track) {
   lua_newtable(L);