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#include "UI.hpp"
#include "Model/Filter.hpp"
#include "Model/Project.hpp"
#include "UI/Localization.hpp"
#include "UI/States.hpp"
#include "Utils/ScopeGuard.hpp"
#include "Utils/Time.hpp"
#include <IconsFontAwesome.h>
#include <SQLiteCpp/Statement.h>
#include <imgui.h>
#include <cstdint>
#include <memory>
#include <vector>
namespace {
// TODO move to Settings
constexpr int kMaxEntriesPerPage = 20;
class SaleEntry {
public:
std::string Customer;
std::string Deadline;
std::string DeliveryTime;
};
class PurchaseEntry {
public:
std::string Factory;
std::string OrderTime;
std::string DeliveryTime;
};
class GenericTableView {
protected:
// Translation entries for implementer to fill out
const char* mEditDialogTitle;
SQLite::Statement* mGetRowCountStatement;
SQLite::Statement* mGetRowsStatement;
Project* mProject;
/// Current active filter object, or \c nullptr.
std::unique_ptr<TableRowsFilter> mActiveFilter;
/// Inclusive.
/// \see mLastCachedRowId
int64_t mFirstCachedRowId;
/// Inclusive.
/// \see mFirstCachedRowId
int64_t mLastCachedRowId;
/// A vector of row ids of entries (in \c mEntries) that are visible under the current filter. To use these indices, the elements should be mapped to
/// index of the list of entries by adding \c mFirstCachedRowId.
/// The list of entries is a cached, contiguous (row id of each entry is monotonically increasing, but not necessarily starts at 0) list
/// of ready-to-be-presented entries, held by the implementer.
std::vector<int> mActiveEntries;
/// Number of rows in the table.
int mRowCount;
/// Last possible page for the current set table and filter (inclusive).
int mLastPage;
/// The current page the user is on.
int mCurrentPage;
int mSelectedEntryRowId;
public:
static int CalcPageForRowId(int64_t rowId) {
return rowId / kMaxEntriesPerPage;
}
/// Calculate range [begin, end) of index for the list of entries that are currently visible that the path-th page would show.
/// i.e. when there is a filter, look into \c mActiveEntryIndices; when there is no filter, use directly.
static std::pair<int64_t, int64_t> CalcRangeForPage(int page) {
int begin = page * kMaxEntriesPerPage;
return { begin, begin + kMaxEntriesPerPage };
}
Project* GetProject() const {
return mProject;
}
virtual void OnProjectChanged(Project* newProject) {
mProject = newProject;
if (mGetRowCountStatement->executeStep()) {
mRowCount = mGetRowCountStatement->getColumn(0).getInt();
} else {
// TODO report error
}
mFirstCachedRowId = 0;
mLastCachedRowId = 0;
ClearEntries();
mActiveEntries.clear();
UpdateLastPage();
SetPage(0);
mSelectedEntryRowId = -1;
}
TableRowsFilter* GetFilter() const {
return mActiveFilter.get();
}
virtual void OnFilterChanged() {
auto& stmt = mProject->GetTransactionsModel().GetSales().FilterRowsStatement;
DEFER {
stmt.reset();
};
// TODO lazy loading when too many results
mActiveEntries.clear();
int columnIdx = stmt.getColumnIndex("rowid");
while (stmt.executeStep()) {
mActiveEntries.push_back(stmt.getColumn(columnIdx).getInt());
}
UpdateLastPage();
SetPage(0);
mSelectedEntryRowId = -1;
}
void OnFilterChanged(std::unique_ptr<TableRowsFilter> filter) {
mActiveFilter = std::move(filter);
OnFilterChanged();
}
void Draw() {
bool dummy = true;
auto ls = LocaleStrings::Instance.get();
if (ImGui::Button(ICON_FA_ARROW_LEFT, mCurrentPage == 0)) {
mSelectedEntryRowId = -1;
SetPage(mCurrentPage - 1);
}
ImGui::SameLine();
// +1 to convert from 0-based indices to 1-based, for human legibility
ImGui::Text("%d/%d", mCurrentPage + 1, mLastPage + 1);
ImGui::SameLine();
if (ImGui::Button(ICON_FA_ARROW_RIGHT, mCurrentPage == mLastPage)) {
mSelectedEntryRowId = -1;
SetPage(mCurrentPage + 1);
}
ImGui::SameLine();
if (ImGui::Button(ls->Edit.Get(), mSelectedEntryRowId == -1)) {
ImGui::OpenPopup(mEditDialogTitle);
}
if (ImGui::BeginPopupModal(mEditDialogTitle, &dummy, ImGuiWindowFlags_AlwaysAutoResize)) {
EditEntry(mSelectedEntryRowId);
ImGui::EndPopup();
}
if (ImGui::BeginTable("", GetTableColumnCount())) {
SetupTableColumns();
ImGui::TableHeadersRow();
auto [begin, end] = CalcRangeForPage(mCurrentPage);
if (mActiveFilter) {
end = std::min(end, (int64_t)mActiveEntries.size() - 1);
for (int i = begin; i < end; ++i) {
int rowId = mActiveEntries[i];
DisplayEntry(rowId);
}
} else {
end = std::min(end, mLastCachedRowId);
for (int rowId = begin; rowId < end; ++rowId) {
DisplayEntry(rowId);
}
}
ImGui::EndTable();
}
}
void SetPage(int page) {
mCurrentPage = page;
EnsureCacheCoversPage(page);
}
int RowIdToIndex(int64_t rowId) const {
return rowId - mFirstCachedRowId;
}
int64_t IndexToRowId(int index) const {
return index + mFirstCachedRowId;
}
protected:
virtual int GetTableColumnCount() const = 0;
virtual void SetupTableColumns() = 0;
virtual void DisplayEntry(int rowId) = 0;
virtual void EditEntry(int rowId) = 0;
virtual void ClearEntries() = 0;
void EnsureCacheCoversPage(int page) {
auto [begin, end] = CalcRangeForPage(page);
EnsureCacheCovers(begin, end - 1);
}
void EnsureCacheCovers(int64_t firstRow, int64_t lastRow) {
if (firstRow > lastRow) {
std::swap(firstRow, lastRow);
}
int newFirst = mFirstCachedRowId;
int newLast = mLastCachedRowId;
bool doRebuild = false;
if (firstRow < mFirstCachedRowId) {
newFirst = (CalcPageForRowId(firstRow) + 1) * kMaxEntriesPerPage;
doRebuild = true;
}
if (lastRow > mLastCachedRowId) {
newLast = (CalcPageForRowId(lastRow) + 1) * kMaxEntriesPerPage;
doRebuild = true;
}
if (!doRebuild) return;
EnsureCacheCoversImpl(newFirst, newLast);
}
/// To be implemented by child classes, presumable calling LoadRange() to get the front and back new contents.
/// \param newFirst The first rowid the new cache should cover
/// \param newLast The last rowid the new cache should cover
virtual void EnsureCacheCoversImpl(int newFirst, int newLast) = 0;
template <class TEntry, class TCollector>
std::vector<TEntry> LoadRange(int64_t begin, int64_t end, TCollector&& collector) {
std::vector<TEntry> result;
size_t size = end - begin;
if (size == 0) {
return result;
}
result.reserve(size);
DEFER {
mGetRowsStatement->reset();
};
mGetRowsStatement->bind(1, begin);
mGetRowsStatement->bind(2, end);
collector(result);
return result;
}
void UpdateLastPage() {
mLastPage = mActiveEntries.empty()
? CalcPageForRowId(mRowCount)
: CalcPageForRowId(mActiveEntries.back());
}
};
class SalesTableView : public GenericTableView {
private:
/// A cached, contiguous (row id of each entry is monotonically increasing, but not necessarily starts at 0) list ready-to-be-presented entries. May be incomplete.
std::vector<SaleEntry> mEntries;
public:
SalesTableView() {
auto ls = LocaleStrings::Instance.get();
mEditDialogTitle = ls->EditSaleEntryDialogTitle.Get();
}
virtual void OnProjectChanged(Project* newProject) override {
auto& sales = newProject->GetTransactionsModel().GetSales();
mGetRowCountStatement = &sales.GetRowCountStatement;
mGetRowsStatement = &sales.GetRowsStatement;
GenericTableView::OnProjectChanged(newProject);
}
protected:
virtual int GetTableColumnCount() const override {
return 3;
}
virtual void SetupTableColumns() override {
auto ls = LocaleStrings::Instance.get();
ImGui::TableSetupColumn(ls->DatabaseCustomerColumn.Get());
ImGui::TableSetupColumn(ls->DatabaseDeadlineColumn.Get());
ImGui::TableSetupColumn(ls->DatabaseDeliveryTimeColumn.Get());
}
virtual void DisplayEntry(int rowId) override {
auto& entry = GetEntry(rowId);
auto ls = LocaleStrings::Instance.get();
ImGui::PushID(rowId);
ImGui::TableNextRow();
ImGui::TableNextColumn();
if (ImGui::Selectable(entry.Customer.c_str(), mSelectedEntryRowId == rowId, ImGuiSelectableFlags_SpanAllColumns)) {
mSelectedEntryRowId = rowId;
}
ImGui::TableNextColumn();
ImGui::TextUnformatted(entry.Deadline.c_str());
ImGui::TableNextColumn();
if (entry.DeliveryTime.empty()) {
ImGui::TextUnformatted(ls->NotDelievered.Get());
} else {
ImGui::TextUnformatted(entry.DeliveryTime.c_str());
}
ImGui::PopID();
}
virtual void EditEntry(int rowId) override {
// TODO
}
virtual void ClearEntries() override {
mEntries.clear();
}
virtual void EnsureCacheCoversImpl(int newFirst, int newLast) override {
auto CollectRows = [&](std::vector<SaleEntry>& result) {
auto& stmt = *mGetRowsStatement;
int customerCol = stmt.getColumnIndex("Customer");
int deadlineCol = stmt.getColumnIndex("Deadline");
int deliveryTimeCol = stmt.getColumnIndex("DeliveryTime");
while (stmt.executeStep()) {
auto customer = stmt.getColumn(customerCol).getInt();
auto deadline = stmt.getColumn(deadlineCol).getInt64();
auto deliveryTime = stmt.getColumn(deliveryTimeCol).getInt64();
result.push_back(SaleEntry{
.Customer = mProject->Customers.Find(customer)->GetName(),
.Deadline = StringifyTimeStamp(deadline),
.DeliveryTime = StringifyTimeStamp(deliveryTime),
});
}
};
auto front = LoadRange<SaleEntry>(newFirst, mFirstCachedRowId, CollectRows);
auto back = LoadRange<SaleEntry>(mLastCachedRowId + 1, newLast + 1, CollectRows);
mFirstCachedRowId -= front.size();
mLastCachedRowId += back.size();
mEntries.insert(mEntries.begin(), std::make_move_iterator(front.begin()), std::make_move_iterator(front.end()));
mEntries.insert(mEntries.end(), std::make_move_iterator(back.begin()), std::make_move_iterator(back.end()));
}
SaleEntry& GetEntry(int rowId) {
return mEntries[RowIdToIndex(rowId)];
}
};
class PurchasesTableView : public GenericTableView {
private:
std::vector<PurchaseEntry> mEntries;
public:
PurchasesTableView() {
auto ls = LocaleStrings::Instance.get();
mEditDialogTitle = ls->EditPurchaseEntryDialogTitle.Get();
}
virtual void OnProjectChanged(Project* newProject) override {
auto& purchases = newProject->GetTransactionsModel().GetPurchases();
mGetRowCountStatement = &purchases.GetRowCountStatement;
mGetRowsStatement = &purchases.GetRowsStatement;
GenericTableView::OnProjectChanged(newProject);
}
protected:
virtual int GetTableColumnCount() const override {
return 3;
}
virtual void SetupTableColumns() override {
auto ls = LocaleStrings::Instance.get();
ImGui::TableSetupColumn(ls->DatabaseFactoryColumn.Get());
ImGui::TableSetupColumn(ls->DatabaseOrderTimeColumn.Get());
ImGui::TableSetupColumn(ls->DatabaseDeliveryTimeColumn.Get());
}
virtual void DisplayEntry(int rowId) override {
auto& entry = GetEntry(rowId);
auto ls = LocaleStrings::Instance.get();
ImGui::PushID(rowId);
ImGui::TableNextRow();
ImGui::TableNextColumn();
if (ImGui::Selectable(entry.Factory.c_str(), mSelectedEntryRowId == rowId, ImGuiSelectableFlags_SpanAllColumns)) {
mSelectedEntryRowId = rowId;
}
ImGui::TableNextColumn();
if (entry.OrderTime.empty()) {
ImGui::TextUnformatted(ls->NotDelievered.Get());
} else {
ImGui::TextUnformatted(entry.OrderTime.c_str());
}
ImGui::TableNextColumn();
if (entry.DeliveryTime.empty()) {
ImGui::TextUnformatted(ls->NotDelievered.Get());
} else {
ImGui::TextUnformatted(entry.DeliveryTime.c_str());
}
ImGui::PopID();
}
virtual void EditEntry(int rowId) override {
// TODO
}
virtual void ClearEntries() override {
mEntries.clear();
}
virtual void EnsureCacheCoversImpl(int newFirst, int newLast) override {
auto CollectRows = [&](std::vector<PurchaseEntry>& result) {
auto& stmt = *mGetRowsStatement;
int factoryCol = stmt.getColumnIndex("Factory");
int orderTimeCol = stmt.getColumnIndex("OrderTime");
int deliveryTimeCol = stmt.getColumnIndex("DeliveryTime");
while (stmt.executeStep()) {
auto factory = stmt.getColumn(factoryCol).getInt();
auto orderTime = stmt.getColumn(orderTimeCol).getInt64();
auto deliveryTime = stmt.getColumn(deliveryTimeCol).getInt64();
result.push_back(PurchaseEntry{
.Factory = mProject->Factories.Find(factory)->GetName(),
.OrderTime = StringifyTimeStamp(orderTime),
.DeliveryTime = StringifyTimeStamp(deliveryTime),
});
}
};
auto front = LoadRange<PurchaseEntry>(newFirst, mFirstCachedRowId, CollectRows);
auto back = LoadRange<PurchaseEntry>(mLastCachedRowId + 1, newLast + 1, CollectRows);
mFirstCachedRowId -= front.size();
mLastCachedRowId += back.size();
mEntries.insert(mEntries.begin(), std::make_move_iterator(front.begin()), std::make_move_iterator(front.end()));
mEntries.insert(mEntries.end(), std::make_move_iterator(back.begin()), std::make_move_iterator(back.end()));
}
PurchaseEntry& GetEntry(int rowId) {
return mEntries[RowIdToIndex(rowId)];
}
};
} // namespace
void UI::DatabaseViewTab() {
auto ls = LocaleStrings::Instance.get();
auto& uis = UIState::GetInstance();
static Project* currentProject = nullptr;
static SalesTableView sales;
static PurchasesTableView purchases;
if (currentProject != uis.CurrentProject.get()) {
currentProject = uis.CurrentProject.get();
sales.OnProjectChanged(currentProject);
purchases.OnProjectChanged(currentProject);
}
if (ImGui::BeginTabBar("##DatabaseViewTabs")) {
if (ImGui::BeginTabItem(ls->SalesViewTab.Get())) {
sales.Draw();
ImGui::EndTabItem();
}
if (ImGui::BeginTabItem(ls->PurchasesViewTab.Get())) {
purchases.Draw();
ImGui::EndTabItem();
}
ImGui::EndTabBar();
}
}
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