From a180e1b56025c6b7d81d2e587ad90531d29de44c Mon Sep 17 00:00:00 2001
From: rtk0c <mail.tianyig@gmail.com>
Date: Sat, 5 Jun 2021 19:44:54 -0700
Subject: Initial work on asset system (does not compile)

---
 core/src/Model/Workflow/Workflow.hpp      | 25 +++++++++-----
 core/src/Model/Workflow/Workflow_Main.cpp | 56 ++++++++++++++++++++++++++++---
 core/src/Model/Workflow/fwd.hpp           |  2 +-
 3 files changed, 68 insertions(+), 15 deletions(-)

(limited to 'core/src/Model/Workflow')

diff --git a/core/src/Model/Workflow/Workflow.hpp b/core/src/Model/Workflow/Workflow.hpp
index c57ac31..51596e5 100644
--- a/core/src/Model/Workflow/Workflow.hpp
+++ b/core/src/Model/Workflow/Workflow.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include "Model/Assets.hpp"
 #include "Model/Workflow/Value.hpp"
 #include "Utils/Vector.hpp"
 #include "cplt_fwd.hpp"
@@ -174,17 +175,12 @@ protected:
 	void OnDetach();
 };
 
-struct WorkflowInfo
+class Workflow : public Asset
 {
-	std::filesystem::path Path;
-	std::string Name;
-	std::string PathStringCache = Path.string();
-
-	std::unique_ptr<Workflow> LoadFromDisk() const;
-};
+public:
+	using CategoryType = WorkflowAssetCategory;
+	static constinit const WorkflowAssetCategory Category;
 
-class Workflow
-{
 private:
 	friend class WorkflowNode;
 	friend class WorkflowEvaluationContext;
@@ -279,3 +275,14 @@ private:
 	std::pair<WorkflowConnection&, size_t> AllocWorkflowConnection();
 	std::pair<std::unique_ptr<WorkflowNode>&, size_t> AllocWorkflowStep();
 };
+
+class WorkflowAssetCategory : public AssetCategory
+{
+public:
+	virtual void DiscoverFiles(const std::function<void(SavedAsset)>& callback) const override;
+	virtual Workflow* CreateEmpty(const SavedAsset& diskForm) const override;
+	virtual Workflow* Load(const SavedAsset& diskForm) const override;
+	virtual void SetupDetailsTable(const char* tableId) const override;
+	virtual void DrawBigIcon(const SavedAsset& asset) const override;
+	virtual void DrawDetailsTableRow(const SavedAsset& asset) const override;
+};
diff --git a/core/src/Model/Workflow/Workflow_Main.cpp b/core/src/Model/Workflow/Workflow_Main.cpp
index 61cd510..0875f11 100644
--- a/core/src/Model/Workflow/Workflow_Main.cpp
+++ b/core/src/Model/Workflow/Workflow_Main.cpp
@@ -1,5 +1,8 @@
 #include "Workflow.hpp"
 
+#include "Model/GlobalStates.hpp"
+#include "Model/Project.hpp"
+
 #include <imgui.h>
 #include <imgui_node_editor.h>
 #include <tsl/robin_set.h>
@@ -9,6 +12,7 @@
 #include <queue>
 #include <utility>
 
+using namespace std::literals::string_view_literals;
 namespace ImNodes = ax::NodeEditor;
 
 WorkflowConnection::WorkflowConnection()
@@ -320,17 +324,49 @@ void WorkflowNode::OnDetach()
 {
 }
 
-std::unique_ptr<Workflow> WorkflowInfo::LoadFromDisk() const
+constinit const WorkflowAssetCategory Workflow::Category{};
+
+void WorkflowAssetCategory::DiscoverFiles(const std::function<void(SavedAsset)>& callback) const
+{
+	auto& gs = GlobalStates::GetInstance();
+	DiscoverFilesByExtension(callback, gs.GetCurrentProject()->GetWorkflowsDirectory(), ".cplt-workflow"sv);
+}
+
+Workflow* WorkflowAssetCategory::CreateEmpty(const SavedAsset& diskForm) const
+{
+	// TODO
+}
+
+Workflow* WorkflowAssetCategory::Load(const SavedAsset& diskForm) const
 {
-	std::ifstream ifs(this->Path);
+	std::ifstream ifs(diskForm.Path);
 	if (!ifs) return nullptr;
 
 	auto workflow = std::make_unique<Workflow>();
-	if (workflow->ReadFrom(ifs) == Workflow::RR_Success) {
-		return workflow;
+	if (workflow->ReadFrom(ifs) != Workflow::RR_Success) {
+		return nullptr;
 	}
 
-	return nullptr;
+	return workflow.release();
+}
+
+void WorkflowAssetCategory::SetupDetailsTable(const char* tableId) const
+{
+	ImGui::BeginTable(tableId, 2);
+
+	ImGui::TableSetupColumn("Name");
+	ImGui::TableSetupColumn("Modified time");
+	ImGui::TableHeadersRow();
+}
+
+void WorkflowAssetCategory::DrawBigIcon(const SavedAsset& asset) const
+{
+	// TODO
+}
+
+void WorkflowAssetCategory::DrawDetailsTableRow(const SavedAsset& asset) const
+{
+	// TODO
 }
 
 const std::vector<WorkflowConnection>& Workflow::GetConnections() const
@@ -717,6 +753,16 @@ void Workflow::WriteTo(std::ostream& stream)
 	}
 }
 
+void Workflow::DrawBigIcon() const
+{
+	// TODO
+}
+
+void Workflow::DrawDetailTableRow() const
+{
+	// TODO
+}
+
 std::pair<WorkflowConnection&, size_t> Workflow::AllocWorkflowConnection()
 {
 	for (size_t idx = 0; idx < mConnections.size(); ++idx) {
diff --git a/core/src/Model/Workflow/fwd.hpp b/core/src/Model/Workflow/fwd.hpp
index d118fe8..8f0263d 100644
--- a/core/src/Model/Workflow/fwd.hpp
+++ b/core/src/Model/Workflow/fwd.hpp
@@ -18,5 +18,5 @@ class BaseObjectValue;
 // Workflow.hpp
 class WorkflowConnection;
 class WorkflowNode;
-struct WorkflowInfo;
 class Workflow;
+class WorkflowAssetCategory;
-- 
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