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#include "../include/Config.hpp"
#include "../include/Storage.hpp"
#include <json/value.h>
#include <assert.h>
#include <X11/Xlib.h>
// TODO: Show nice error message if config looks wrong (wrong types, has configs that do not exist (maybe spelling mistake?))
namespace QuickMedia {
static bool config_initialized = false;
static Config *config = nullptr;
static float scale = 1.0f;
static bool scale_set = false;
static const int XFT_DPI_DEFAULT = 96;
// Returns XFT_DPI_DEFAULT on error
static int xrdb_get_dpi() {
int xft_dpi = XFT_DPI_DEFAULT;
Display *display = XOpenDisplay(nullptr);
if(!display) {
fprintf(stderr, "Failed to open x display\n");
return xft_dpi;
}
char *dpi = XGetDefault(display, "Xft", "dpi");
if(dpi) {
xft_dpi = strtol(dpi, nullptr, 10);
if(xft_dpi == 0)
xft_dpi = XFT_DPI_DEFAULT;
}
XCloseDisplay(display);
return xft_dpi;
}
static float get_ui_scale() {
if(scale_set)
return scale;
const char *gdk_scale = getenv("GDK_SCALE");
if(gdk_scale) {
setlocale(LC_ALL, "C"); // Sigh... stupid C
scale = atof(gdk_scale);
} else {
scale = (float)xrdb_get_dpi() / (float)XFT_DPI_DEFAULT;
}
if(scale < 0.0001f)
scale = 1.0f;
scale_set = true;
return scale;
}
static std::string path_expanduser(const std::string &path) {
std::string result;
if(!path.empty() && path[0] == '~')
result = get_home_dir().data + path.substr(1);
else
result = path;
return result;
}
template <typename T>
static void get_json_value(const Json::Value &json_obj, const char *field_name, T &val) {
const Json::Value &json_val = json_obj[field_name];
if(json_val.isNull())
return;
if(!json_val.is<T>()) {
fprintf(stderr, "Warning: config variable \"%s\" is not a %s\n", field_name, typeid(T).name());
return;
}
val = json_val.as<T>();
}
static void get_json_value(const Json::Value &json_obj, const char *field_name, float &val) {
const Json::Value &json_val = json_obj[field_name];
if(json_val.isNull())
return;
if(!json_val.isDouble()) {
fprintf(stderr, "Warning: config variable \"%s\" is not a float\n", field_name);
return;
}
val = json_val.asDouble();
}
// No-op if this has already been called before
static void init_config() {
if(config_initialized)
return;
setlocale(LC_ALL, "C"); // Sigh... stupid C
config_initialized = true;
// Wtf? can't use static non-pointer config because it causes a segfault when setting config.theme.
// It looks like a libc bug??? crashes for both gcc and clang.
config = new Config();
config->scale = get_ui_scale();
Path config_path = get_storage_dir().join("config.json");
if(get_file_type(config_path) != FileType::REGULAR) {
return;
}
Json::Value json_root;
if(!read_file_as_json(config_path, json_root) || !json_root.isObject()) {
fprintf(stderr, "Warning: failed to parse config file: %s\n", config_path.data.c_str());
return;
}
const Json::Value &search_json = json_root["search"];
if(search_json.isObject())
get_json_value(search_json, "font_size", config->search.font_size);
const Json::Value &tab_json = json_root["tab"];
if(tab_json.isObject())
get_json_value(tab_json, "font_size", config->tab.font_size);
const Json::Value &body_json = json_root["body"];
if(body_json.isObject()) {
get_json_value(body_json, "title_font_size", config->body.title_font_size);
get_json_value(body_json, "author_font_size", config->body.author_font_size);
get_json_value(body_json, "description_font_size", config->body.description_font_size);
get_json_value(body_json, "timestamp_font_size", config->body.timestamp_font_size);
get_json_value(body_json, "reaction_font_size", config->body.reaction_font_size);
get_json_value(body_json, "embedded_load_font_size", config->body.embedded_load_font_size);
}
const Json::Value &input_json = json_root["input"];
if(input_json.isObject())
get_json_value(input_json, "font_size", config->input.font_size);
const Json::Value &video_json = json_root["video"];
if(video_json.isObject())
get_json_value(video_json, "max_height", config->video.max_height);
const Json::Value &local_manga_json = json_root["local_manga"];
if(local_manga_json.isObject()) {
const Json::Value &directory_json = local_manga_json["directory"];
if(directory_json.isString()) {
config->local_manga.directory = path_expanduser(directory_json.asString());
while(config->local_manga.directory.size() > 1 && config->local_manga.directory.back() == '/') {
config->local_manga.directory.pop_back();
}
}
get_json_value(local_manga_json, "load_progress", config->local_manga.sort_by_name);
get_json_value(local_manga_json, "sort_chapters_by_name", config->local_manga.sort_chapters_by_name);
}
const Json::Value &local_anime_json = json_root["local_anime"];
if(local_anime_json.isObject()) {
const Json::Value &directory_json = local_anime_json["directory"];
if(directory_json.isString()) {
config->local_anime.directory = path_expanduser(directory_json.asString());
while(config->local_anime.directory.size() > 1 && config->local_anime.directory.back() == '/') {
config->local_anime.directory.pop_back();
}
}
get_json_value(local_anime_json, "sort_by_name", config->local_anime.sort_by_name);
get_json_value(local_anime_json, "auto_group_episodes", config->local_anime.auto_group_episodes);
}
const Json::Value &youtube_json = json_root["youtube"];
if(youtube_json.isObject())
get_json_value(youtube_json, "load_progress", config->youtube.load_progress);
get_json_value(json_root, "use_system_fonts", config->use_system_fonts);
get_json_value(json_root, "use_system_mpv_config", config->use_system_mpv_config);
get_json_value(json_root, "enable_shaders", config->enable_shaders);
get_json_value(json_root, "theme", config->theme);
get_json_value(json_root, "scale", config->scale);
get_json_value(json_root, "font_scale", config->font_scale);
get_json_value(json_root, "spacing_scale", config->spacing_scale);
}
const Config& get_config() {
init_config();
return *config;
}
}
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