1 files changed, 146 insertions, 0 deletions
diff --git a/core/src/Model/Items.hpp b/core/src/Model/Items.hpp
new file mode 100644
index 0000000..0c7be41
--- /dev/null
+++ b/core/src/Model/Items.hpp
@@ -0,0 +1,146 @@
+#pragma once
+
+#include <tsl/array_map.h>
+#include <cstddef>
+#include <stdexcept>
+#include <string>
+#include <string_view>
+#include <vector>
+
+/// Pointers and references returned by accessors are valid as long as no non-const functions have been called.
+template <class T>
+class ItemList {
+public:
+	class Iterator {
+	private:
+		typename std::vector<T>::const_iterator mBackingIter;
+
+	public:
+		Iterator(typename std::vector<T>::const_iterator it)
+			: mBackingIter{ it } {
+		}
+
+		Iterator& operator++() {
+			++mBackingIter;
+			return *this;
+		}
+
+		Iterator& operator++(int) {
+			auto tmp = *this;
+			++mBackingIter;
+			return tmp;
+		}
+
+		Iterator& operator--() {
+			--mBackingIter;
+			return *this;
+		}
+
+		Iterator& operator--(int) {
+			auto tmp = *this;
+			--mBackingIter;
+			return tmp;
+		}
+
+		const T& operator*() const {
+			return *mBackingIter;
+		}
+
+		friend bool operator==(const Iterator&, const Iterator&) = default;
+	};
+
+private:
+	std::vector<T> mStorage;
+	tsl::array_map<char, size_t> mNameLookup;
+
+public:
+	template <class... Args>
+	T& Insert(std::string name, Args... args) {
+		auto iter = mNameLookup.find(name);
+		if (iter != mNameLookup.end()) {
+			throw std::runtime_error("Duplicate key.");
+		}
+
+		size_t id = mStorage.size();
+		mNameLookup.insert(name, id);
+		return mStorage.emplace_back(id, std::move(name), std::forward<Args>(args)...);
+	}
+
+	const T* Find(size_t id) const {
+		return &mStorage[id];
+	}
+
+	const T* Find(std::string_view name) const {
+		auto iter = mNameLookup.find(name);
+		if (iter != mNameLookup.end()) {
+			return &mStorage[iter.value()];
+		} else {
+			return nullptr;
+		}
+	}
+
+	Iterator begin() const {
+		return Iterator(mStorage.begin());
+	}
+
+	Iterator end() const {
+		return Iterator(mStorage.end());
+	}
+};
+
+class ItemBase {
+private:
+	size_t mId;
+
+public:
+	ItemBase();
+	ItemBase(size_t id);
+
+	bool IsInvalid() const;
+	size_t GetId() const;
+};
+
+class ProductItem : public ItemBase {
+private:
+	std::string mName;
+	std::string mDescription;
+
+public:
+	ProductItem() {}
+	ProductItem(size_t id, std::string name);
+
+	const std::string& GetName() const;
+	void SetName(std::string mName);
+	const std::string& GetDescription() const;
+	void SetDescription(std::string description);
+};
+
+class FactoryItem : public ItemBase {
+private:
+	std::string mName;
+	std::string mDescription;
+
+public:
+	FactoryItem() {}
+	FactoryItem(size_t id, std::string name);
+
+	const std::string& GetName() const;
+	void SetName(std::string name);
+	const std::string& GetDescription() const;
+	void SetDescription(std::string description);
+};
+
+class CustomerItem : public ItemBase {
+private:
+	std::string mName;
+	std::string mDescription;
+
+public:
+	CustomerItem() {}
+	CustomerItem(size_t id, std::string name);
+
+	const std::string& GetName() const;
+	void SetName(std::string name);
+	const std::string& GetDescription() const;
+	void SetDescription(std::string description);
+};