#pragma once

#include "ast_gen.h"

namespace example_novel {
	enum class NovelNode {
		GlobalElement = 0,
		TextSection = 1,
		PointRefers = 2,
		PointDefines = 3,
		StoryDefine = 4,
		Document = 5,
		ArticleDefine = 6,
		VolumeDefine = 7,
		RankDeclaration = 8,
		FragmentSlice = 9,
	};

	class LIBSYNTAX_EXPORT AbstractImpl : public ast_basic::ExprElement, public ast_gen::SyntaxElement {
	private:
		std::weak_ptr<const SyntaxElement> parent_store;

	public:
		explicit AbstractImpl(std::shared_ptr<const lib_syntax::ExprRule> rule_bind);

		// 通过 SyntaxElement 继承
		virtual std::shared_ptr<const ast_basic::IExprInst> bindExpression() const override;
		QString path() const override;
		virtual std::shared_ptr<const ast_gen::SyntaxElement> parent() const override;
		virtual void setParent(std::shared_ptr<const ast_gen::SyntaxElement> inst) override;
		virtual QList<std::shared_ptr<const ast_gen::TokenAccess>> selfTokens() const override;
	};


	class LIBSYNTAX_EXPORT TextSection : public AbstractImpl {
	public:
		TextSection(std::shared_ptr<const lib_syntax::ExprRule> rule_bind);

		QString content() const;

		// SyntaxElement interface
	public:
		virtual int typeMark() const override;
		virtual bool isAnonymous() const override;
		virtual QString signature() const override;
	};

	class LIBSYNTAX_EXPORT PointRefers : public AbstractImpl {
	public:
		PointRefers(std::shared_ptr<const lib_syntax::ExprRule> rule_bind);

		QString storyRefer() const;
		void setStoryRefer(const QString& refer);

		QString fragmentRefer() const;
		void setFragmentRefer(const QString& refer);

		QString referSignature() const;

		// SyntaxElement interface
	public:
		virtual int typeMark() const override;
		virtual bool isAnonymous() const override;
		virtual QString signature() const override;

	private:
		QString story_refs, fragment_ref;
	};

	class LIBSYNTAX_EXPORT PointDefines : public AbstractImpl {
	public:
		PointDefines(std::shared_ptr<const lib_syntax::ExprRule> rule_bind);

		QString name() const;
		void setName(const QString& nm);

		// SyntaxElement interface
	public:
		virtual int typeMark() const override;
		virtual bool isAnonymous() const override;
		virtual QString signature() const override;

	private:
		QString name_store;
	};

	class LIBSYNTAX_EXPORT ArticleDefine : public AbstractImpl {
	public:
		ArticleDefine(std::shared_ptr<const lib_syntax::ExprRule> rule_bind);

		QString name() const;
		void setName(const QString& nm);

		// SyntaxElement interface
	public:
		virtual int typeMark() const override;
		virtual bool isAnonymous() const override;
		virtual QString signature() const override;

	private:
		QString name_store;
	};

	class LIBSYNTAX_EXPORT VolumeDefine : public AbstractImpl {
	public:
		VolumeDefine(std::shared_ptr<const lib_syntax::ExprRule> rule_bind);

		QString name() const;
		void setName(const QString& nm);

		// SyntaxElement interface
	public:
		virtual int typeMark() const override;
		virtual bool isAnonymous() const override;
		virtual QString signature() const override;

	private:
		QString name_store;
	};

	class LIBSYNTAX_EXPORT StoryDefine : public AbstractImpl {
	public:
		StoryDefine(std::shared_ptr<const lib_syntax::ExprRule> rule_bind);

		QString name() const;
		void setName(const QString& nm);

		void setSort(int value);
		int sort() const;

		// SyntaxElement interface
	public:
		virtual int typeMark() const override;
		virtual bool isAnonymous() const override;
		virtual QString signature() const override;

	private:
		QString name_store;
		int sort_index;
	};

	class LIBSYNTAX_EXPORT Document : public AbstractImpl {
	public:
		Document(std::shared_ptr<const lib_syntax::ExprRule> rule_bind);

		// SyntaxElement interface
	public:
		virtual int typeMark() const override;
		virtual bool isAnonymous() const override;
		virtual QString signature() const override;
	};

	class LIBSYNTAX_EXPORT RankDeclare : public AbstractImpl {
	private:
		int page_rank = 0;
	public:
		RankDeclare(std::shared_ptr<const lib_syntax::ExprRule> rule);

		int rankNumber() const;
		void setRank(int nums);

		// 通过 AbstractImpl 继承
		int typeMark() const override;
		bool isAnonymous() const override;
		QString signature() const override;
	};
}

namespace lib_syntax {
	template<> class ElementRule<example_novel::TextSection> : public ExprRule {
	public:
		ElementRule<example_novel::TextSection>(const QString& rule_name, int expr_mark)
			:ExprRule(rule_name, expr_mark) { }

		// 通过 ExprRule 继承
		virtual std::shared_ptr<ast_basic::IExprInst> newEmptyInstance() const {
			return std::dynamic_pointer_cast<ast_basic::IExprInst>(
				std::make_shared<example_novel::TextSection>(this->shared_from_this()));
		}

		virtual std::shared_ptr<ExprRule> makeCopy() const {
			return std::make_shared<ElementRule<example_novel::TextSection>>(name(), typeMark());
		}

		virtual std::tuple<IBasicRule::MatchResult, std::shared_ptr<const lib_words::IWordBase>>
			parse(std::shared_ptr<IContext> rt_inst, std::shared_ptr<const lib_words::IWordBase> head) const override {

			std::shared_ptr<ast_basic::IExprInst> elm_ast = this->newEmptyInstance();
			auto text_present = this->token_present();

			rt_inst->pushExprRule(this->shared_from_this());
			rt_inst->pushExprInst(elm_ast);

			auto rstg = child_store->parse(rt_inst, head);
			auto tokens_decl = elm_ast->tokens();

			switch (std::get<0>(rstg)) {
			case IBasicRule::MatchResult::Fail:
			case IBasicRule::MatchResult::Part:
				rt_inst->popExprInst();
				rt_inst->popExprRule();
				break;
			case IBasicRule::MatchResult::Success:
				{
					if (!std::dynamic_pointer_cast<example_novel::Document>(elm_ast)) {
						auto start_pos = tokens_decl.first()->position();
						rt_inst->clearErrors(rt_inst->currentFile(), start_pos);
					}

					rt_inst->popExprInst();
					rt_inst->popExprRule();
					while (tokens_decl.size()) {
						auto text_paragraph = this->newEmptyInstance();
						int row_n = tokens_decl.first()->row();

						for (int idx = 0; idx < tokens_decl.size(); ++idx) {
							auto target_token = tokens_decl.at(idx);
							if (target_token->row() == row_n) {
								text_paragraph->addToken(target_token);
								tokens_decl.removeAt(idx--);
							}
						}

						if (rt_inst->currentExprInst()) {
							rt_inst->currentExprInst()->addChild(text_paragraph);
						}
						else {
							rt_inst->appendDocInst(text_paragraph);
						}
					}

				}break;
			default:
				break;
			}

			return rstg;
		}


	};
}