9 files changed, 523 insertions, 0 deletions

diff --git a/app/source/Cplt/Model/Workflow/Nodes/DocumentNodes.cpp b/app/source/Cplt/Model/Workflow/Nodes/DocumentNodes.cpp
new file mode 100644
index 0000000..df4a8bb
--- /dev/null
+++ b/app/source/Cplt/Model/Workflow/Nodes/DocumentNodes.cpp
@@ -0,0 +1,18 @@
+#include "DocumentNodes.hpp"
+
+#include <Cplt/Model/Workflow/Evaluation.hpp>
+#include <Cplt/Model/Workflow/Values/Basic.hpp>
+
+bool DocumentTemplateExpansionNode::IsInstance(const WorkflowNode* node)
+{
+	return node->GetKind() == KD_DocumentTemplateExpansion;
+}
+
+DocumentTemplateExpansionNode::DocumentTemplateExpansionNode()
+	: WorkflowNode(KD_DocumentTemplateExpansion, false)
+{
+}
+
+void DocumentTemplateExpansionNode::Evaluate(WorkflowEvaluationContext& ctx)
+{
+}
diff --git a/app/source/Cplt/Model/Workflow/Nodes/DocumentNodes.hpp b/app/source/Cplt/Model/Workflow/Nodes/DocumentNodes.hpp
new file mode 100644
index 0000000..a266b2c
--- /dev/null
+++ b/app/source/Cplt/Model/Workflow/Nodes/DocumentNodes.hpp
@@ -0,0 +1,13 @@
+#pragma once
+
+#include <Cplt/Model/Workflow/Workflow.hpp>
+
+class DocumentTemplateExpansionNode : public WorkflowNode
+{
+public:
+	static bool IsInstance(const WorkflowNode* node);
+	DocumentTemplateExpansionNode();
+
+	// TODO
+	virtual void Evaluate(WorkflowEvaluationContext& ctx) override;
+};
diff --git a/app/source/Cplt/Model/Workflow/Nodes/NumericNodes.cpp b/app/source/Cplt/Model/Workflow/Nodes/NumericNodes.cpp
new file mode 100644
index 0000000..f8b29bb
--- /dev/null
+++ b/app/source/Cplt/Model/Workflow/Nodes/NumericNodes.cpp
@@ -0,0 +1,94 @@
+#include "NumericNodes.hpp"
+
+#include <Cplt/Model/Workflow/Evaluation.hpp>
+#include <Cplt/Model/Workflow/Values/Basic.hpp>
+#include <Cplt/Utils/I18n.hpp>
+#include <Cplt/Utils/Macros.hpp>
+#include <Cplt/Utils/RTTI.hpp>
+
+#include <cassert>
+#include <utility>
+
+WorkflowNode::Kind NumericOperationNode::OperationTypeToNodeKind(OperationType type)
+{
+	switch (type) {
+		case Addition: return KD_NumericAddition;
+		case Subtraction: return KD_NumericSubtraction;
+		case Multiplication: return KD_NumericMultiplication;
+		case Division: return KD_NumericDivision;
+		default: return InvalidKind;
+	}
+}
+
+NumericOperationNode::OperationType NumericOperationNode::NodeKindToOperationType(Kind kind)
+{
+	switch (kind) {
+		case KD_NumericAddition: return Addition;
+		case KD_NumericSubtraction: return Subtraction;
+		case KD_NumericMultiplication: return Multiplication;
+		case KD_NumericDivision: return Division;
+		default: return InvalidType;
+	}
+}
+
+bool NumericOperationNode::IsInstance(const WorkflowNode* node)
+{
+	return node->GetKind() >= KD_NumericAddition && node->GetKind() <= KD_NumericDivision;
+}
+
+NumericOperationNode::NumericOperationNode(OperationType type)
+	: WorkflowNode(OperationTypeToNodeKind(type), false)
+	, mType{ type }
+{
+	mInputs.resize(2);
+	mInputs[0].MatchingType = BaseValue::KD_Numeric;
+	mInputs[1].MatchingType = BaseValue::KD_Numeric;
+
+	mOutputs.resize(1);
+	mOutputs[0].MatchingType = BaseValue::KD_Numeric;
+}
+
+void NumericOperationNode::Evaluate(WorkflowEvaluationContext& ctx)
+{
+	auto lhsVal = dyn_cast<NumericValue>(ctx.GetConnectionValue(mInputs[0]));
+	if (!lhsVal) return;
+	double lhs = lhsVal->GetValue();
+
+	auto rhsVal = dyn_cast<NumericValue>(ctx.GetConnectionValue(mInputs[1]));
+	if (!rhsVal) return;
+	double rhs = rhsVal->GetValue();
+
+	double res;
+	switch (mType) {
+		case Addition: res = lhs + rhs; break;
+		case Subtraction: res = lhs - rhs; break;
+		case Multiplication: res = lhs * rhs; break;
+		case Division: {
+			if (rhs == 0.0) {
+				ctx.ReportError(I18N_TEXT("Error: division by 0", L10N_WORKFLOW_RTERROR_DIV_BY_0), *this);
+				return;
+			}
+			res = lhs / rhs;
+		} break;
+
+		default: return;
+	}
+
+	auto value = std::make_unique<NumericValue>();
+	value->SetValue(res);
+	ctx.SetConnectionValue(mOutputs[0], std::move(value));
+}
+
+bool NumericExpressionNode::IsInstance(const WorkflowNode* node)
+{
+	return node->GetKind() == KD_NumericExpression;
+}
+
+NumericExpressionNode::NumericExpressionNode()
+	: WorkflowNode(KD_NumericExpression, false)
+{
+}
+
+void NumericExpressionNode::Evaluate(WorkflowEvaluationContext& ctx)
+{
+}
diff --git a/app/source/Cplt/Model/Workflow/Nodes/NumericNodes.hpp b/app/source/Cplt/Model/Workflow/Nodes/NumericNodes.hpp
new file mode 100644
index 0000000..3c89708
--- /dev/null
+++ b/app/source/Cplt/Model/Workflow/Nodes/NumericNodes.hpp
@@ -0,0 +1,44 @@
+#pragma once
+
+#include <Cplt/Model/Workflow/Workflow.hpp>
+
+#include <cstddef>
+#include <memory>
+#include <variant>
+#include <vector>
+
+class NumericOperationNode : public WorkflowNode
+{
+public:
+	enum OperationType
+	{
+		Addition,
+		Subtraction,
+		Multiplication,
+		Division,
+
+		InvalidType,
+		TypeCount = InvalidType,
+	};
+
+private:
+	OperationType mType;
+
+public:
+	static Kind OperationTypeToNodeKind(OperationType type);
+	static OperationType NodeKindToOperationType(Kind kind);
+	static bool IsInstance(const WorkflowNode* node);
+	NumericOperationNode(OperationType type);
+
+	virtual void Evaluate(WorkflowEvaluationContext& ctx) override;
+};
+
+class NumericExpressionNode : public WorkflowNode
+{
+public:
+	static bool IsInstance(const WorkflowNode* node);
+	NumericExpressionNode();
+
+	// TODO
+	virtual void Evaluate(WorkflowEvaluationContext& ctx) override;
+};
\ No newline at end of file
diff --git a/app/source/Cplt/Model/Workflow/Nodes/TextNodes.cpp b/app/source/Cplt/Model/Workflow/Nodes/TextNodes.cpp
new file mode 100644
index 0000000..9b31f7a
--- /dev/null
+++ b/app/source/Cplt/Model/Workflow/Nodes/TextNodes.cpp
@@ -0,0 +1,231 @@
+#include "TextNodes.hpp"
+
+#include <Cplt/Model/Workflow/Evaluation.hpp>
+#include <Cplt/Model/Workflow/Values/Basic.hpp>
+#include <Cplt/Utils/Macros.hpp>
+#include <Cplt/Utils/RTTI.hpp>
+#include <Cplt/Utils/Variant.hpp>
+
+#include <cassert>
+#include <utility>
+#include <variant>
+#include <vector>
+
+class TextFormatterNode::Impl
+{
+public:
+	template <class TFunction>
+	static void ForArguments(std::vector<Element>::iterator begin, std::vector<Element>::iterator end, const TFunction& func)
+	{
+		for (auto it = begin; it != end; ++it) {
+			auto& elm = *it;
+			if (auto arg = std::get_if<Argument>(&elm)) {
+				func(*arg);
+			}
+		}
+	}
+
+	/// Find the pin index that the \c elmIdx -th element should have, based on the elements coming before it.
+	static int FindPinForElement(const std::vector<Element>& vec, int elmIdx)
+	{
+		for (int i = elmIdx; i >= 0; --i) {
+			auto& elm = vec[i];
+			if (auto arg = std::get_if<Argument>(&elm)) {
+				return arg->PinIdx + 1;
+			}
+		}
+		return 0;
+	}
+};
+
+BaseValue::Kind TextFormatterNode::ArgumentTypeToValueKind(TextFormatterNode::ArgumentType arg)
+{
+	switch (arg) {
+		case NumericArgument: return BaseValue::KD_Numeric;
+		case TextArgument: return BaseValue::KD_Text;
+		case DateTimeArgument: return BaseValue::KD_DateTime;
+	}
+}
+
+bool TextFormatterNode::IsInstance(const WorkflowNode* node)
+{
+	return node->GetKind() == KD_TextFormatting;
+}
+
+TextFormatterNode::TextFormatterNode()
+	: WorkflowNode(KD_TextFormatting, false)
+{
+}
+
+int TextFormatterNode::GetElementCount() const
+{
+	return mElements.size();
+}
+
+const TextFormatterNode::Element& TextFormatterNode::GetElement(int idx) const
+{
+	return mElements[idx];
+}
+
+void TextFormatterNode::SetElement(int idx, std::string text)
+{
+	assert(idx >= 0 && idx < mElements.size());
+
+	std::visit(
+		Overloaded{
+			[&](const std::string& original) { mMinOutputChars -= original.size(); },
+			[&](const Argument& original) { PreRemoveElement(idx); },
+		},
+		mElements[idx]);
+
+	mMinOutputChars += text.size();
+	mElements[idx] = std::move(text);
+}
+
+void TextFormatterNode::SetElement(int idx, ArgumentType argument)
+{
+	assert(idx >= 0 && idx < mElements.size());
+
+	std::visit(
+		Overloaded{
+			[&](const std::string& original) {
+				mMinOutputChars -= original.size();
+
+				mElements[idx] = Argument{
+					.Type = argument,
+					.PinIdx = Impl::FindPinForElement(mElements, idx),
+				};
+				/* `original` is invalid from this point */
+			},
+			[&](const Argument& original) {
+				int pinIdx = original.PinIdx;
+
+				// Create pin
+				auto& pin = mInputs[pinIdx];
+				pin.MatchingType = ArgumentTypeToValueKind(argument);
+
+				// Create element
+				mElements[idx] = Argument{
+					.Type = argument,
+					.PinIdx = pinIdx,
+				};
+				/* `original` is invalid from this point */
+			},
+		},
+		mElements[idx]);
+}
+
+void TextFormatterNode::InsertElement(int idx, std::string text)
+{
+	assert(idx >= 0);
+	if (idx >= mElements.size()) AppendElement(std::move(text));
+
+	mMinOutputChars += text.size();
+	mElements.insert(mElements.begin() + idx, std::move(text));
+}
+
+void TextFormatterNode::InsertElement(int idx, ArgumentType argument)
+{
+	assert(idx >= 0);
+	if (idx >= mElements.size()) AppendElement(argument);
+
+	int pinIdx = Impl::FindPinForElement(mElements, idx);
+
+	// Create pin
+	auto& pin = InsertInputPin(pinIdx);
+	pin.MatchingType = ArgumentTypeToValueKind(argument);
+
+	// Create element
+	mElements.insert(
+		mElements.begin() + idx,
+		Argument{
+			.Type = argument,
+			.PinIdx = pinIdx,
+		});
+}
+
+void TextFormatterNode::AppendElement(std::string text)
+{
+	mMinOutputChars += text.size();
+	mElements.push_back(std::move(text));
+}
+
+void TextFormatterNode::AppendElement(ArgumentType argument)
+{
+	int pinIdx = mInputs.size();
+	// Create pin
+	mInputs.push_back(InputPin{});
+	mInputs.back().MatchingType = ArgumentTypeToValueKind(argument);
+	// Creat eelement
+	mElements.push_back(Argument{
+		.Type = argument,
+		.PinIdx = pinIdx,
+	});
+}
+
+void TextFormatterNode::RemoveElement(int idx)
+{
+	assert(idx >= 0 && idx < mElements.size());
+
+	PreRemoveElement(idx);
+	if (auto arg = std::get_if<Argument>(&mElements[idx])) {
+		RemoveInputPin(arg->PinIdx);
+	}
+	mElements.erase(mElements.begin() + idx);
+}
+
+void TextFormatterNode::Evaluate(WorkflowEvaluationContext& ctx)
+{
+	std::string result;
+	result.reserve((size_t)(mMinOutputChars * 1.5f));
+
+	auto HandleText = [&](const std::string& str) {
+		result += str;
+	};
+	auto HandleArgument = [&](const Argument& arg) {
+		switch (arg.Type) {
+			case NumericArgument: {
+				if (auto val = dyn_cast<NumericValue>(ctx.GetConnectionValue(mInputs[arg.PinIdx]))) {
+					result += val->GetString();
+				} else {
+					// TODO localize
+					ctx.ReportError("Non-numeric value connected to a numeric text format parameter.", *this);
+				}
+			} break;
+			case TextArgument: {
+				if (auto val = dyn_cast<TextValue>(ctx.GetConnectionValue(mInputs[arg.PinIdx]))) {
+					result += val->GetValue();
+				} else {
+					// TODO localize
+					ctx.ReportError("Non-text value connected to a textual text format parameter.", *this);
+				}
+			} break;
+			case DateTimeArgument: {
+				if (auto val = dyn_cast<DateTimeValue>(ctx.GetConnectionValue(mInputs[arg.PinIdx]))) {
+					result += val->GetString();
+				} else {
+					// TODO localize
+					ctx.ReportError("Non-date/time value connected to a date/time text format parameter.", *this);
+				}
+			} break;
+		}
+	};
+
+	for (auto& elm : mElements) {
+		std::visit(Overloaded{ HandleText, HandleArgument }, elm);
+	}
+}
+
+void TextFormatterNode::PreRemoveElement(int idx)
+{
+	auto& elm = mElements[idx];
+	if (auto arg = std::get_if<Argument>(&elm)) {
+		RemoveInputPin(arg->PinIdx);
+		Impl::ForArguments(
+			mElements.begin() + idx + 1,
+			mElements.end(),
+			[&](Argument& arg) {
+				arg.PinIdx--;
+			});
+	}
+}
diff --git a/app/source/Cplt/Model/Workflow/Nodes/TextNodes.hpp b/app/source/Cplt/Model/Workflow/Nodes/TextNodes.hpp
new file mode 100644
index 0000000..4689931
--- /dev/null
+++ b/app/source/Cplt/Model/Workflow/Nodes/TextNodes.hpp
@@ -0,0 +1,53 @@
+#pragma once
+
+#include <Cplt/Model/Workflow/Workflow.hpp>
+
+#include <cstddef>
+#include <memory>
+#include <variant>
+#include <vector>
+
+class TextFormatterNode : public WorkflowNode
+{
+public:
+	enum ArgumentType
+	{
+		NumericArgument,
+		TextArgument,
+		DateTimeArgument,
+	};
+
+private:
+	class Impl;
+
+	struct Argument
+	{
+		ArgumentType Type;
+		int PinIdx;
+	};
+	using Element = std::variant<std::string, Argument>;
+
+	std::vector<Element> mElements;
+	int mMinOutputChars;
+
+public:
+	static BaseValue::Kind ArgumentTypeToValueKind(ArgumentType arg);
+	static bool IsInstance(const WorkflowNode* node);
+	TextFormatterNode();
+
+	int GetElementCount() const;
+	const Element& GetElement(int idx) const;
+
+	void SetElement(int idx, std::string text);
+	void SetElement(int idx, ArgumentType argument);
+	void InsertElement(int idx, std::string text);
+	void InsertElement(int idx, ArgumentType argument);
+	void AppendElement(std::string text);
+	void AppendElement(ArgumentType argument);
+	void RemoveElement(int idx);
+
+	virtual void Evaluate(WorkflowEvaluationContext& ctx) override;
+
+private:
+	void PreRemoveElement(int idx);
+};
diff --git a/app/source/Cplt/Model/Workflow/Nodes/UserInputNodes.cpp b/app/source/Cplt/Model/Workflow/Nodes/UserInputNodes.cpp
new file mode 100644
index 0000000..93d458c
--- /dev/null
+++ b/app/source/Cplt/Model/Workflow/Nodes/UserInputNodes.cpp
@@ -0,0 +1,32 @@
+#include "UserInputNodes.hpp"
+
+#include <Cplt/Model/Workflow/Evaluation.hpp>
+#include <Cplt/Model/Workflow/Values/Basic.hpp>
+
+bool FormInputNode::IsInstance(const WorkflowNode* node)
+{
+	return node->GetKind() == KD_FormInput;
+}
+
+FormInputNode::FormInputNode()
+	: WorkflowNode(KD_FormInput, false)
+{
+}
+
+void FormInputNode::Evaluate(WorkflowEvaluationContext& ctx)
+{
+}
+
+bool DatabaseRowsInputNode::IsInstance(const WorkflowNode* node)
+{
+	return node->GetKind() == KD_DatabaseRowsInput;
+}
+
+DatabaseRowsInputNode::DatabaseRowsInputNode()
+	: WorkflowNode(KD_DatabaseRowsInput, false)
+{
+}
+
+void DatabaseRowsInputNode::Evaluate(WorkflowEvaluationContext& ctx)
+{
+}
diff --git a/app/source/Cplt/Model/Workflow/Nodes/UserInputNodes.hpp b/app/source/Cplt/Model/Workflow/Nodes/UserInputNodes.hpp
new file mode 100644
index 0000000..f0b923c
--- /dev/null
+++ b/app/source/Cplt/Model/Workflow/Nodes/UserInputNodes.hpp
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <Cplt/Model/Workflow/Workflow.hpp>
+
+class FormInputNode : public WorkflowNode
+{
+public:
+	static bool IsInstance(const WorkflowNode* node);
+	FormInputNode();
+
+	// TODO
+	virtual void Evaluate(WorkflowEvaluationContext& ctx) override;
+};
+
+class DatabaseRowsInputNode : public WorkflowNode
+{
+public:
+	static bool IsInstance(const WorkflowNode* node);
+	DatabaseRowsInputNode();
+
+	// TODO
+	virtual void Evaluate(WorkflowEvaluationContext& ctx) override;
+};
diff --git a/app/source/Cplt/Model/Workflow/Nodes/fwd.hpp b/app/source/Cplt/Model/Workflow/Nodes/fwd.hpp
new file mode 100644
index 0000000..4153825
--- /dev/null
+++ b/app/source/Cplt/Model/Workflow/Nodes/fwd.hpp
@@ -0,0 +1,15 @@
+#pragma once
+
+// DocumentNodes.hpp
+class DocumentTemplateExpansionNode;
+
+// InputNodes.hpp
+class FormInputNode;
+class DatabaseRowsInputNode;
+
+// NumericNodes.hpp
+class NumericOperationNode;
+class NumericExpressionNode;
+
+// TextNodes.hpp
+class TextFormatterNode;