feat: allow to remove templates

src/core/config/config.cpp

@@ -216,6 +216,32 @@ Result<void> config::update_template(const std::string &key,
     return m_file->save_file();
 }
 
+Result<void> config::remove_template(const std::string &key)
+{
+    if (!m_file)
+        return Err<void>(error_code::config_missing, "Configuration not initialized");
+    
+    auto it = m_themes.find(key);
+    if (it == m_themes.end())
+        return Err<void>(error_code::template_not_found, "Template not found", key);
+    
+    std::filesystem::path template_file = it->second.template_path();
+    if (std::filesystem::exists(template_file))
+    {
+        try {
+            std::filesystem::remove(template_file);
+        } catch (const std::exception& e) {
+            return Err<void>(error_code::file_write_failed, "Failed to delete template file", e.what());
+        }
+    }
+    
+    m_themes.erase(it);
+    
+    m_file->remove_section("templates." + key);
+    
+    return m_file->save_file();
+}
+
 const std::unordered_map<std::string, clrsync::core::theme_template> config::templates()
 {
     if (m_themes.empty() && m_file)

src/core/config/config.hpp

@@ -33,6 +33,7 @@ class config
 
     Result<void> update_template(const std::string &key,
                          const clrsync::core::theme_template &theme_template);
+    Result<void> remove_template(const std::string &key);
     static std::filesystem::path get_data_dir();
 
   private:

src/core/io/file.hpp

@@ -41,6 +41,7 @@ class file
     }
     virtual void insert_or_update_value(const std::string &section, const std::string &key,
                                         const value_type &value) {};
+    virtual void remove_section(const std::string &section) {};
     virtual Result<void> save_file() { return Ok(); };
 };
 } // namespace clrsync::core::io

src/core/io/toml_file.cpp

@@ -92,6 +92,25 @@ void toml_file::insert_or_update_value(const std::string &section, const std::st
     std::visit([&](auto &&v) { tbl->insert_or_assign(key, v); }, value);
 }
 
+void toml_file::remove_section(const std::string &section)
+{
+    toml::table *tbl = m_file.as_table();
+    auto parts = split(section, '.');
+    
+    if (parts.empty())
+        return;
+    
+    for (size_t i = 0; i < parts.size() - 1; ++i)
+    {
+        auto *sub = (*tbl)[parts[i]].as_table();
+        if (!sub)
+            return;
+        tbl = sub;
+    }
+    
+    tbl->erase(parts.back());
+}
+
 Result<void> toml_file::save_file()
 {
     try {

src/core/io/toml_file.hpp

@@ -19,6 +19,7 @@ class toml_file : public file
     std::map<std::string, value_type> get_table(const std::string &section_path) const override;
     void insert_or_update_value(const std::string &section, const std::string &key,
                                 const value_type &value) override;
+    void remove_section(const std::string &section) override;
     Result<void> save_file() override;
 
   private: