/*****************************************************************************
 * Copyright (c) 2014-2024 OpenRCT2 developers
 *
 * For a complete list of all authors, please refer to contributors.md
 * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
 *
 * OpenRCT2 is licensed under the GNU General Public License version 3.
 *****************************************************************************/

#include <algorithm>
#include <openrct2-ui/interface/Dropdown.h>
#include <openrct2-ui/interface/Graph.h>
#include <openrct2-ui/interface/Widget.h>
#include <openrct2-ui/windows/Window.h>
#include <openrct2/Context.h>
#include <openrct2/Game.h>
#include <openrct2/GameState.h>
#include <openrct2/actions/ParkSetLoanAction.h>
#include <openrct2/actions/ParkSetResearchFundingAction.h>
#include <openrct2/config/Config.h>
#include <openrct2/localisation/Date.h>
#include <openrct2/localisation/Formatter.h>
#include <openrct2/localisation/Localisation.h>
#include <openrct2/management/Finance.h>
#include <openrct2/ride/RideData.h>
#include <openrct2/ride/ShopItem.h>
#include <openrct2/scenario/Scenario.h>
#include <openrct2/sprites.h>
#include <openrct2/world/Park.h>

namespace OpenRCT2::Ui::Windows
{
    enum
    {
        WINDOW_FINANCES_PAGE_SUMMARY,
        WINDOW_FINANCES_PAGE_FINANCIAL_GRAPH,
        WINDOW_FINANCES_PAGE_VALUE_GRAPH,
        WINDOW_FINANCES_PAGE_PROFIT_GRAPH,
        WINDOW_FINANCES_PAGE_MARKETING,
        WINDOW_FINANCES_PAGE_RESEARCH,
        WINDOW_FINANCES_PAGE_COUNT
    };

    enum
    {
        WIDX_BACKGROUND,
        WIDX_TITLE,
        WIDX_CLOSE,
        WIDX_PAGE_BACKGROUND,
        WIDX_TAB_1,
        WIDX_TAB_2,
        WIDX_TAB_3,
        WIDX_TAB_4,
        WIDX_TAB_5,
        WIDX_TAB_6,

        WIDX_TAB_CONTENT,

        WIDX_SUMMARY_SCROLL = WIDX_TAB_CONTENT,
        WIDX_LOAN,
        WIDX_LOAN_INCREASE,
        WIDX_LOAN_DECREASE,

        WIDX_ACTIVE_CAMPAIGNS_GROUP = WIDX_TAB_CONTENT,
        WIDX_CAMPAIGNS_AVAILABLE_GROUP,
        WIDX_CAMPAIGN_1,
        WIDX_CAMPAIGN_2,
        WIDX_CAMPAIGN_3,
        WIDX_CAMPAIGN_4,
        WIDX_CAMPAIGN_5,
        WIDX_CAMPAIGN_6,

        WIDX_RESEARCH_FUNDING_GROUP = WIDX_TAB_CONTENT,
        WIDX_RESEARCH_FUNDING,
        WIDX_RESEARCH_FUNDING_DROPDOWN_BUTTON,
        WIDX_RESEARCH_PRIORITIES_GROUP,
        WIDX_TRANSPORT_RIDES,
        WIDX_GENTLE_RIDES,
        WIDX_ROLLER_COASTERS,
        WIDX_THRILL_RIDES,
        WIDX_WATER_RIDES,
        WIDX_SHOPS_AND_STALLS,
        WIDX_SCENERY_AND_THEMING,
    };

#pragma region Measurements

    static constexpr int32_t WH_SUMMARY = 309;
    static constexpr int32_t WH_RESEARCH = 207;
    static constexpr int32_t WH_OTHER_TABS = 257;
    static constexpr int32_t WW_RESEARCH = 320;
    static constexpr int32_t WW_OTHER_TABS = 530;
    static constexpr int32_t RSH_SUMMARY = 266;
    static constexpr int32_t RSH_RESEARCH = 164;
    static constexpr int32_t RSH_OTHER_TABS = 214;
    static constexpr int32_t RSW_RESEARCH = WW_RESEARCH;
    static constexpr int32_t RSW_OTHER_TABS = WW_OTHER_TABS;

#pragma endregion

#pragma region Widgets

    // clang-format off
#define MAIN_FINANCES_WIDGETS(TITLE, RSW, RSH, WW, WH) \
    WINDOW_SHIM(TITLE, WW, WH), \
    MakeWidget({0, 43}, {RSW, RSH}, WindowWidgetType::Resize, WindowColour::Secondary), \
    MakeTab({  3, 17}, STR_FINANCES_SHOW_SUMMARY_TAB_TIP      ), \
    MakeTab({ 34, 17}, STR_FINANCES_SHOW_CASH_TAB_TIP         ), \
    MakeTab({ 65, 17}, STR_FINANCES_SHOW_PARK_VALUE_TAB_TIP   ), \
    MakeTab({ 96, 17}, STR_FINANCES_SHOW_WEEKLY_PROFIT_TAB_TIP), \
    MakeTab({127, 17}, STR_FINANCES_SHOW_MARKETING_TAB_TIP    ), \
    MakeTab({158, 17}, STR_FINANCES_RESEARCH_TIP              )

static Widget _windowFinancesSummaryWidgets[] =
{
    MAIN_FINANCES_WIDGETS(STR_FINANCIAL_SUMMARY, RSW_OTHER_TABS, RSH_SUMMARY, WW_OTHER_TABS, WH_SUMMARY),
    MakeWidget        ({130,  50}, {391, 211}, WindowWidgetType::Scroll,  WindowColour::Secondary, SCROLL_HORIZONTAL              ),
    MakeSpinnerWidgets({ 64, 279}, { 97,  14}, WindowWidgetType::Spinner, WindowColour::Secondary, STR_FINANCES_SUMMARY_LOAN_VALUE), // NB: 3 widgets.
    kWidgetsEnd,
};

static Widget _windowFinancesCashWidgets[] =
{
    MAIN_FINANCES_WIDGETS(STR_FINANCIAL_GRAPH, RSW_OTHER_TABS, RSH_OTHER_TABS, WW_OTHER_TABS, WH_OTHER_TABS),
    kWidgetsEnd,
};

static Widget _windowFinancesParkValueWidgets[] =
{
    MAIN_FINANCES_WIDGETS(STR_PARK_VALUE_GRAPH, RSW_OTHER_TABS, RSH_OTHER_TABS, WW_OTHER_TABS, WH_OTHER_TABS),
    kWidgetsEnd,
};

static Widget _windowFinancesProfitWidgets[] =
{
    MAIN_FINANCES_WIDGETS(STR_PROFIT_GRAPH, RSW_OTHER_TABS, RSH_OTHER_TABS, WW_OTHER_TABS, WH_OTHER_TABS),
    kWidgetsEnd,
};

static Widget _windowFinancesMarketingWidgets[] =
{
    MAIN_FINANCES_WIDGETS(STR_MARKETING, RSW_OTHER_TABS, RSH_OTHER_TABS, WW_OTHER_TABS, WH_OTHER_TABS),
    MakeWidget({3, 47}, { WW_OTHER_TABS - 6,  45}, WindowWidgetType::Groupbox, WindowColour::Tertiary , STR_MARKETING_CAMPAIGNS_IN_OPERATION                                   ),
    MakeWidget({3, 47}, { WW_OTHER_TABS - 6, 206}, WindowWidgetType::Groupbox, WindowColour::Tertiary , STR_MARKETING_CAMPAIGNS_AVAILABLE                                      ),
    MakeWidget({8,  0}, {WW_OTHER_TABS - 16,  14}, WindowWidgetType::ImgBtn,   WindowColour::Secondary, 0xFFFFFFFF,                           STR_START_THIS_MARKETING_CAMPAIGN),
    MakeWidget({8,  0}, {WW_OTHER_TABS - 16,  14}, WindowWidgetType::ImgBtn,   WindowColour::Secondary, 0xFFFFFFFF,                           STR_START_THIS_MARKETING_CAMPAIGN),
    MakeWidget({8,  0}, {WW_OTHER_TABS - 16,  14}, WindowWidgetType::ImgBtn,   WindowColour::Secondary, 0xFFFFFFFF,                           STR_START_THIS_MARKETING_CAMPAIGN),
    MakeWidget({8,  0}, {WW_OTHER_TABS - 16,  14}, WindowWidgetType::ImgBtn,   WindowColour::Secondary, 0xFFFFFFFF,                           STR_START_THIS_MARKETING_CAMPAIGN),
    MakeWidget({8,  0}, {WW_OTHER_TABS - 16,  14}, WindowWidgetType::ImgBtn,   WindowColour::Secondary, 0xFFFFFFFF,                           STR_START_THIS_MARKETING_CAMPAIGN),
    MakeWidget({8,  0}, {WW_OTHER_TABS - 16,  14}, WindowWidgetType::ImgBtn,   WindowColour::Secondary, 0xFFFFFFFF,                           STR_START_THIS_MARKETING_CAMPAIGN),
    kWidgetsEnd,
};

static Widget _windowFinancesResearchWidgets[] =
{
    MAIN_FINANCES_WIDGETS(STR_RESEARCH_FUNDING, RSW_RESEARCH, RSH_RESEARCH, WW_RESEARCH, WH_RESEARCH),
    MakeWidget({  3,  47}, { WW_RESEARCH - 6,  45}, WindowWidgetType::Groupbox, WindowColour::Tertiary, STR_RESEARCH_FUNDING_                                                             ),
    MakeWidget({  8,  59}, {             160,  14}, WindowWidgetType::DropdownMenu, WindowColour::Tertiary, 0xFFFFFFFF,                           STR_SELECT_LEVEL_OF_RESEARCH_AND_DEVELOPMENT),
    MakeWidget({156,  60}, {              11,  12}, WindowWidgetType::Button,   WindowColour::Tertiary, STR_DROPDOWN_GLYPH,                   STR_SELECT_LEVEL_OF_RESEARCH_AND_DEVELOPMENT),
    MakeWidget({  3,  96}, { WW_RESEARCH - 6, 107}, WindowWidgetType::Groupbox, WindowColour::Tertiary, STR_RESEARCH_PRIORITIES                                                           ),
    MakeWidget({  8, 108}, {WW_RESEARCH - 14,  12}, WindowWidgetType::Checkbox, WindowColour::Tertiary, STR_RESEARCH_NEW_TRANSPORT_RIDES,     STR_RESEARCH_NEW_TRANSPORT_RIDES_TIP        ),
    MakeWidget({  8, 121}, {WW_RESEARCH - 14,  12}, WindowWidgetType::Checkbox, WindowColour::Tertiary, STR_RESEARCH_NEW_GENTLE_RIDES,        STR_RESEARCH_NEW_GENTLE_RIDES_TIP           ),
    MakeWidget({  8, 134}, {WW_RESEARCH - 14,  12}, WindowWidgetType::Checkbox, WindowColour::Tertiary, STR_RESEARCH_NEW_ROLLER_COASTERS,     STR_RESEARCH_NEW_ROLLER_COASTERS_TIP        ),
    MakeWidget({  8, 147}, {WW_RESEARCH - 14,  12}, WindowWidgetType::Checkbox, WindowColour::Tertiary, STR_RESEARCH_NEW_THRILL_RIDES,        STR_RESEARCH_NEW_THRILL_RIDES_TIP           ),
    MakeWidget({  8, 160}, {WW_RESEARCH - 14,  12}, WindowWidgetType::Checkbox, WindowColour::Tertiary, STR_RESEARCH_NEW_WATER_RIDES,         STR_RESEARCH_NEW_WATER_RIDES_TIP            ),
    MakeWidget({  8, 173}, {WW_RESEARCH - 14,  12}, WindowWidgetType::Checkbox, WindowColour::Tertiary, STR_RESEARCH_NEW_SHOPS_AND_STALLS,    STR_RESEARCH_NEW_SHOPS_AND_STALLS_TIP       ),
    MakeWidget({  8, 186}, {WW_RESEARCH - 14,  12}, WindowWidgetType::Checkbox, WindowColour::Tertiary, STR_RESEARCH_NEW_SCENERY_AND_THEMING, STR_RESEARCH_NEW_SCENERY_AND_THEMING_TIP    ),
    kWidgetsEnd,
};
    // clang-format on

    static Widget* _windowFinancesPageWidgets[] = {
        _windowFinancesSummaryWidgets,   // WINDOW_FINANCES_PAGE_SUMMARY
        _windowFinancesCashWidgets,      // WINDOW_FINANCES_PAGE_FINANCIAL_GRAPH
        _windowFinancesParkValueWidgets, // WINDOW_FINANCES_PAGE_VALUE_GRAPH
        _windowFinancesProfitWidgets,    // WINDOW_FINANCES_PAGE_PROFIT_GRAPH
        _windowFinancesMarketingWidgets, // WINDOW_FINANCES_PAGE_MARKETING
        _windowFinancesResearchWidgets,  // WINDOW_FINANCES_PAGE_RESEARCH
    };
    static_assert(std::size(_windowFinancesPageWidgets) == WINDOW_FINANCES_PAGE_COUNT);

#pragma endregion

    static constexpr StringId _windowFinancesSummaryRowLabels[EnumValue(ExpenditureType::Count)] = {
        STR_FINANCES_SUMMARY_RIDE_CONSTRUCTION,
        STR_FINANCES_SUMMARY_RIDE_RUNNING_COSTS,
        STR_FINANCES_SUMMARY_LAND_PURCHASE,
        STR_FINANCES_SUMMARY_LANDSCAPING,
        STR_FINANCES_SUMMARY_PARK_ENTRANCE_TICKETS,
        STR_FINANCES_SUMMARY_RIDE_TICKETS,
        STR_FINANCES_SUMMARY_SHOP_SALES,
        STR_FINANCES_SUMMARY_SHOP_STOCK,
        STR_FINANCES_SUMMARY_FOOD_DRINK_SALES,
        STR_FINANCES_SUMMARY_FOOD_DRINK_STOCK,
        STR_FINANCES_SUMMARY_STAFF_WAGES,
        STR_FINANCES_SUMMARY_MARKETING,
        STR_FINANCES_SUMMARY_RESEARCH,
        STR_FINANCES_SUMMARY_LOAN_INTEREST,
    };

    static constexpr int32_t _windowFinancesTabAnimationFrames[] = {
        8,  // WINDOW_FINANCES_PAGE_SUMMARY
        16, // WINDOW_FINANCES_PAGE_FINANCIAL_GRAPH
        16, // WINDOW_FINANCES_PAGE_VALUE_GRAPH
        16, // WINDOW_FINANCES_PAGE_PROFIT_GRAPH
        19, // WINDOW_FINANCES_PAGE_MARKETING
        8,  // WINDOW_FINANCES_PAGE_RESEARCH
    };
    static_assert(std::size(_windowFinancesTabAnimationFrames) == WINDOW_FINANCES_PAGE_COUNT);

    static constexpr int32_t EXPENDITURE_COLUMN_WIDTH = 80;

    static constexpr uint32_t _windowFinancesPageHoldDownWidgets[] = {
        (1uLL << WIDX_LOAN_INCREASE) | (1uLL << WIDX_LOAN_DECREASE), // WINDOW_FINANCES_PAGE_SUMMARY

        0, // WINDOW_FINANCES_PAGE_FINANCIAL_GRAPH
        0, // WINDOW_FINANCES_PAGE_VALUE_GRAPH
        0, // WINDOW_FINANCES_PAGE_PROFIT_GRAPH
        0, // WINDOW_FINANCES_PAGE_MARKETING
        0, // WINDOW_FINANCES_PAGE_RESEARCH
    };
    static_assert(std::size(_windowFinancesPageHoldDownWidgets) == WINDOW_FINANCES_PAGE_COUNT);

#pragma endregion

    class FinancesWindow final : public Window
    {
    private:
        uint32_t _lastPaintedMonth;

        void SetDisabledTabs()
        {
            disabled_widgets = (GetGameState().Park.Flags & PARK_FLAGS_FORBID_MARKETING_CAMPAIGN) ? (1uLL << WIDX_TAB_5) : 0;
        }

    public:
        void OnOpen() override
        {
            SetPage(WINDOW_FINANCES_PAGE_SUMMARY);
            _lastPaintedMonth = std::numeric_limits<uint32_t>::max();
            ResearchUpdateUncompletedTypes();
        }

        void OnUpdate() override
        {
            frame_no++;
            InvalidateWidget(WIDX_TAB_1 + page);
        }

        void OnMouseDown(WidgetIndex widgetIndex) override
        {
            switch (page)
            {
                case WINDOW_FINANCES_PAGE_SUMMARY:
                    OnMouseDownSummary(widgetIndex);
                    break;
                case WINDOW_FINANCES_PAGE_RESEARCH:
                    WindowResearchFundingMouseDown(this, widgetIndex, WIDX_RESEARCH_FUNDING);
                    break;
            }
        }

        void OnMouseUp(WidgetIndex widgetIndex) override
        {
            switch (widgetIndex)
            {
                case WIDX_CLOSE:
                    Close();
                    break;
                case WIDX_TAB_1:
                case WIDX_TAB_2:
                case WIDX_TAB_3:
                case WIDX_TAB_4:
                case WIDX_TAB_5:
                case WIDX_TAB_6:
                    SetPage(widgetIndex - WIDX_TAB_1);
                    break;
                default:
                    switch (page)
                    {
                        case WINDOW_FINANCES_PAGE_MARKETING:
                            OnMouseUpMarketing(widgetIndex);
                            break;
                        case WINDOW_FINANCES_PAGE_RESEARCH:
                            WindowResearchFundingMouseUp(widgetIndex, WIDX_RESEARCH_FUNDING);
                    }
                    break;
            }
        }

        void OnDropdown(WidgetIndex widgetIndex, int32_t selectedIndex) override
        {
            if (page == WINDOW_FINANCES_PAGE_RESEARCH)
            {
                WindowResearchFundingDropdown(widgetIndex, selectedIndex, WIDX_RESEARCH_FUNDING);
            }
        }

        void OnPrepareDraw() override
        {
            auto* targetWidgets = _windowFinancesPageWidgets[page];

            if (widgets != targetWidgets)
            {
                widgets = targetWidgets;
                WindowInitScrollWidgets(*this);
            }

            WindowAlignTabs(this, WIDX_TAB_1, WIDX_TAB_6);

            for (auto i = 0; i < WINDOW_FINANCES_PAGE_COUNT; i++)
                SetWidgetPressed(WIDX_TAB_1 + i, false);
            SetWidgetPressed(WIDX_TAB_1 + page, true);
            switch (page)
            {
                case WINDOW_FINANCES_PAGE_SUMMARY:
                    OnPrepareDrawSummary();
                    break;
                case WINDOW_FINANCES_PAGE_MARKETING:
                    OnPrepareDrawMarketing();
                    break;
                case WINDOW_FINANCES_PAGE_RESEARCH:
                    WindowResearchFundingPrepareDraw(this, WIDX_RESEARCH_FUNDING);
                    break;
            }
        }

        void OnDraw(DrawPixelInfo& dpi) override
        {
            DrawWidgets(dpi);
            DrawTabImages(dpi);

            switch (page)
            {
                case WINDOW_FINANCES_PAGE_SUMMARY:
                    OnDrawSummary(dpi);
                    break;
                case WINDOW_FINANCES_PAGE_FINANCIAL_GRAPH:
                    OnDrawFinancialGraph(dpi);
                    break;
                case WINDOW_FINANCES_PAGE_VALUE_GRAPH:
                    OnDrawParkValueGraph(dpi);
                    break;
                case WINDOW_FINANCES_PAGE_PROFIT_GRAPH:
                    OnDrawProfitGraph(dpi);
                    break;
                case WINDOW_FINANCES_PAGE_MARKETING:
                    OnDrawMarketing(dpi);
                    break;
                case WINDOW_FINANCES_PAGE_RESEARCH:
                    WindowResearchFundingDraw(this, dpi);
                    break;
            }
        }

        ScreenSize OnScrollGetSize(int32_t scrollIndex) override
        {
            if (page == WINDOW_FINANCES_PAGE_SUMMARY)
            {
                return { EXPENDITURE_COLUMN_WIDTH * (SummaryMaxAvailableMonth() + 1), 0 };
            }

            return {};
        }

        void OnScrollDraw(int32_t scrollIndex, DrawPixelInfo& dpi) override
        {
            if (page != WINDOW_FINANCES_PAGE_SUMMARY)
                return;

            auto screenCoords = ScreenCoordsXY{ 0, TABLE_CELL_HEIGHT + 2 };

            Widget self = widgets[WIDX_SUMMARY_SCROLL];
            int32_t row_width = std::max<uint16_t>(scrolls[0].h_right, self.width());

            // Expenditure / Income row labels
            for (int32_t i = 0; i < static_cast<int32_t>(ExpenditureType::Count); i++)
            {
                // Darken every even row
                if (i % 2 == 0)
                    GfxFillRect(
                        dpi,
                        { screenCoords - ScreenCoordsXY{ 0, 1 },
                          screenCoords + ScreenCoordsXY{ row_width, (TABLE_CELL_HEIGHT - 2) } },
                        ColourMapA[colours[1]].lighter | 0x1000000);

                screenCoords.y += TABLE_CELL_HEIGHT;
            }

            auto& gameState = GetGameState();
            // Expenditure / Income values for each month
            auto currentMonthYear = GetDate().GetMonthsElapsed();
            for (int32_t i = SummaryMaxAvailableMonth(); i >= 0; i--)
            {
                screenCoords.y = 0;

                uint16_t monthyear = currentMonthYear - i;

                // Month heading
                auto ft = Formatter();
                ft.Add<StringId>(STR_FINANCES_SUMMARY_MONTH_HEADING);
                ft.Add<uint16_t>(monthyear);
                DrawTextBasic(
                    dpi, screenCoords + ScreenCoordsXY{ EXPENDITURE_COLUMN_WIDTH, 0 },
                    monthyear == currentMonthYear ? STR_WINDOW_COLOUR_2_STRINGID : STR_BLACK_STRING, ft,
                    { TextUnderline::On, TextAlignment::RIGHT });
                screenCoords.y += 14;

                // Month expenditures
                money64 profit = 0;
                for (int32_t j = 0; j < static_cast<int32_t>(ExpenditureType::Count); j++)
                {
                    auto expenditure = gameState.ExpenditureTable[i][j];
                    if (expenditure != 0)
                    {
                        profit += expenditure;
                        const StringId format = expenditure >= 0 ? STR_FINANCES_SUMMARY_INCOME_VALUE
                                                                 : STR_FINANCES_SUMMARY_EXPENDITURE_VALUE;
                        ft = Formatter();
                        ft.Add<money64>(expenditure);
                        DrawTextBasic(
                            dpi, screenCoords + ScreenCoordsXY{ EXPENDITURE_COLUMN_WIDTH, 0 }, format, ft,
                            { TextAlignment::RIGHT });
                    }
                    screenCoords.y += TABLE_CELL_HEIGHT;
                }
                screenCoords.y += 4;

                // Month profit
                const StringId format = profit >= 0 ? STR_FINANCES_SUMMARY_INCOME_VALUE : STR_FINANCES_SUMMARY_LOSS_VALUE;
                ft = Formatter();
                ft.Add<money64>(profit);
                DrawTextBasic(
                    dpi, screenCoords + ScreenCoordsXY{ EXPENDITURE_COLUMN_WIDTH, 0 }, format, ft, { TextAlignment::RIGHT });

                GfxFillRect(
                    dpi,
                    { screenCoords + ScreenCoordsXY{ 10, -2 }, screenCoords + ScreenCoordsXY{ EXPENDITURE_COLUMN_WIDTH, -2 } },
                    PALETTE_INDEX_10);

                screenCoords.x += EXPENDITURE_COLUMN_WIDTH;
            }

            _lastPaintedMonth = currentMonthYear;
        }

        void SetPage(int32_t p)
        {
            page = p;
            frame_no = 0;

            hold_down_widgets = _windowFinancesPageHoldDownWidgets[p];
            pressed_widgets = 0;
            widgets = _windowFinancesPageWidgets[p];
            SetDisabledTabs();
            Invalidate();

            if (p == WINDOW_FINANCES_PAGE_RESEARCH)
            {
                width = WW_RESEARCH;
                height = WH_RESEARCH;
            }
            else if (p == WINDOW_FINANCES_PAGE_SUMMARY)
            {
                width = WW_OTHER_TABS;
                height = WH_SUMMARY;
            }
            else
            {
                width = WW_OTHER_TABS;
                height = WH_OTHER_TABS;
            }
            OnResize();
            OnPrepareDraw();

            WindowInitScrollWidgets(*this);

            // Scroll summary all the way to the right, initially.
            if (p == WINDOW_FINANCES_PAGE_SUMMARY)
                InitialiseScrollPosition(WIDX_SUMMARY_SCROLL, 0);

            Invalidate();
        }

#pragma region Summary Events

        void OnMouseDownSummary(WidgetIndex widgetIndex)
        {
            auto& gameState = GetGameState();
            switch (widgetIndex)
            {
                case WIDX_LOAN_INCREASE:
                {
                    // If loan can be increased, do so.
                    // If not, action shows error message.
                    auto newLoan = gameState.BankLoan + 1000.00_GBP;
                    if (gameState.BankLoan < gameState.MaxBankLoan)
                    {
                        newLoan = std::min(gameState.MaxBankLoan, newLoan);
                    }
                    auto gameAction = ParkSetLoanAction(newLoan);
                    GameActions::Execute(&gameAction);
                    break;
                }
                case WIDX_LOAN_DECREASE:
                {
                    // If loan is positive, decrease it.
                    // If loan is negative, action shows error message.
                    // If loan is exactly 0, prevent error message.
                    if (gameState.BankLoan != 0)
                    {
                        auto newLoan = gameState.BankLoan - 1000.00_GBP;
                        if (gameState.BankLoan > 0)
                        {
                            newLoan = std::max(static_cast<money64>(0LL), newLoan);
                        }
                        auto gameAction = ParkSetLoanAction(newLoan);
                        GameActions::Execute(&gameAction);
                    }
                    break;
                }
            }
        }

        void OnPrepareDrawSummary()
        {
            // Setting loan widget's format arguments here.
            // Nothing else should use the global formatter until
            // drawing has completed.
            auto ft = Formatter::Common();
            ft.Increment(6);
            ft.Add<money64>(GetGameState().BankLoan);

            // Keep up with new months being added in the first two years.
            if (GetDate().GetMonthsElapsed() != _lastPaintedMonth)
                InitialiseScrollPosition(WIDX_SUMMARY_SCROLL, 0);
        }

        void OnDrawSummary(DrawPixelInfo& dpi)
        {
            auto screenCoords = windowPos + ScreenCoordsXY{ 8, 51 };
            auto& gameState = GetGameState();

            // Expenditure / Income heading
            DrawTextBasic(
                dpi, screenCoords, STR_FINANCES_SUMMARY_EXPENDITURE_INCOME, {},
                { COLOUR_BLACK, TextUnderline::On, TextAlignment::LEFT });
            screenCoords.y += 14;

            // Expenditure / Income row labels
            for (int32_t i = 0; i < static_cast<int32_t>(ExpenditureType::Count); i++)
            {
                // Darken every even row
                if (i % 2 == 0)
                    GfxFillRect(
                        dpi,
                        { screenCoords - ScreenCoordsXY{ 0, 1 },
                          screenCoords + ScreenCoordsXY{ 121, (TABLE_CELL_HEIGHT - 2) } },
                        ColourMapA[colours[1]].lighter | 0x1000000);

                DrawTextBasic(dpi, screenCoords - ScreenCoordsXY{ 0, 1 }, _windowFinancesSummaryRowLabels[i]);
                screenCoords.y += TABLE_CELL_HEIGHT;
            }

            // Horizontal rule below expenditure / income table
            GfxFillRectInset(
                dpi, { windowPos + ScreenCoordsXY{ 8, 272 }, windowPos + ScreenCoordsXY{ 8 + 513, 272 + 1 } }, colours[1],
                INSET_RECT_FLAG_BORDER_INSET);

            // Loan and interest rate
            DrawTextBasic(dpi, windowPos + ScreenCoordsXY{ 8, 279 }, STR_FINANCES_SUMMARY_LOAN);
            if (!(gameState.Park.Flags & PARK_FLAGS_RCT1_INTEREST))
            {
                auto ft = Formatter();
                ft.Add<uint16_t>(gameState.BankLoanInterestRate);
                DrawTextBasic(dpi, windowPos + ScreenCoordsXY{ 167, 279 }, STR_FINANCES_SUMMARY_AT_X_PER_YEAR, ft);
            }

            // Current cash
            auto ft = Formatter();
            ft.Add<money64>(gameState.Cash);
            StringId stringId = gameState.Cash >= 0 ? STR_CASH_LABEL : STR_CASH_NEGATIVE_LABEL;
            DrawTextBasic(dpi, windowPos + ScreenCoordsXY{ 8, 294 }, stringId, ft);

            // Objective related financial information
            if (gameState.ScenarioObjective.Type == OBJECTIVE_MONTHLY_FOOD_INCOME)
            {
                auto lastMonthProfit = FinanceGetLastMonthShopProfit();
                ft = Formatter();
                ft.Add<money64>(lastMonthProfit);
                DrawTextBasic(
                    dpi, windowPos + ScreenCoordsXY{ 280, 279 }, STR_LAST_MONTH_PROFIT_FROM_FOOD_DRINK_MERCHANDISE_SALES_LABEL,
                    ft);
            }
            else
            {
                // Park value and company value
                ft = Formatter();
                ft.Add<money64>(gameState.Park.Value);
                DrawTextBasic(dpi, windowPos + ScreenCoordsXY{ 280, 279 }, STR_PARK_VALUE_LABEL, ft);
                ft = Formatter();
                ft.Add<money64>(gameState.CompanyValue);
                DrawTextBasic(dpi, windowPos + ScreenCoordsXY{ 280, 294 }, STR_COMPANY_VALUE_LABEL, ft);
            }
        }

        uint16_t SummaryMaxAvailableMonth()
        {
            return std::min<uint16_t>(GetDate().GetMonthsElapsed(), EXPENDITURE_TABLE_MONTH_COUNT - 1);
        }

#pragma endregion

#pragma region Financial Graph Events

        void OnDrawFinancialGraph(DrawPixelInfo& dpi)
        {
            Widget* pageWidget = &_windowFinancesCashWidgets[WIDX_PAGE_BACKGROUND];
            auto graphTopLeft = windowPos + ScreenCoordsXY{ pageWidget->left + 4, pageWidget->top + 15 };
            auto graphBottomRight = windowPos + ScreenCoordsXY{ pageWidget->right - 4, pageWidget->bottom - 4 };

            const auto& gameState = GetGameState();

            // Cash (less loan)
            auto cashLessLoan = gameState.Cash - gameState.BankLoan;
            auto ft = Formatter();
            ft.Add<money64>(cashLessLoan);

            DrawTextBasic(
                dpi, graphTopLeft - ScreenCoordsXY{ 0, 11 },
                cashLessLoan >= 0 ? STR_FINANCES_FINANCIAL_GRAPH_CASH_LESS_LOAN_POSITIVE
                                  : STR_FINANCES_FINANCIAL_GRAPH_CASH_LESS_LOAN_NEGATIVE,
                ft);

            // Graph
            GfxFillRectInset(dpi, { graphTopLeft, graphBottomRight }, colours[1], INSET_RECT_F_30);

            // Calculate the Y axis scale (log2 of highest [+/-]balance)
            int32_t yAxisScale = 0;
            for (int32_t i = 0; i < 64; i++)
            {
                auto balance = gameState.CashHistory[i];
                if (balance == kMoney64Undefined)
                    continue;

                // Modifier balance then keep halving until less than 127 pixels
                balance = std::abs(balance) >> yAxisScale;
                while (balance > 127)
                {
                    balance /= 2;
                    yAxisScale++;
                }
            }

            // Y axis labels
            auto coords = graphTopLeft + ScreenCoordsXY{ 18, 14 };
            money64 axisBase;
            for (axisBase = 12.00_GBP; axisBase >= -12.00_GBP; axisBase -= 6.00_GBP)
            {
                auto axisValue = axisBase << yAxisScale;
                ft = Formatter();
                ft.Add<money64>(axisValue);
                DrawTextBasic(
                    dpi, coords + ScreenCoordsXY{ 70, 0 }, STR_FINANCES_FINANCIAL_GRAPH_CASH_VALUE, ft,
                    { FontStyle::Small, TextAlignment::RIGHT });
                GfxFillRectInset(
                    dpi, { coords + ScreenCoordsXY{ 70, 5 }, { graphTopLeft.x + 482, coords.y + 5 } }, colours[2],
                    INSET_RECT_FLAG_BORDER_INSET);
                coords.y += 39;
            }

            // X axis labels and values
            coords = graphTopLeft + ScreenCoordsXY{ 98, 17 };
            Graph::Draw(dpi, gameState.CashHistory, 64, coords, yAxisScale, 128);
        }

#pragma endregion

#pragma region Park Value Graph Events

        void OnDrawParkValueGraph(DrawPixelInfo& dpi)
        {
            Widget* pageWidget = &_windowFinancesCashWidgets[WIDX_PAGE_BACKGROUND];
            auto graphTopLeft = windowPos + ScreenCoordsXY{ pageWidget->left + 4, pageWidget->top + 15 };
            auto graphBottomRight = windowPos + ScreenCoordsXY{ pageWidget->right - 4, pageWidget->bottom - 4 };

            const auto& gameState = GetGameState();

            // Park value
            auto ft = Formatter();
            ft.Add<money64>(gameState.Park.Value);
            DrawTextBasic(dpi, graphTopLeft - ScreenCoordsXY{ 0, 11 }, STR_FINANCES_PARK_VALUE, ft);

            // Graph
            GfxFillRectInset(dpi, { graphTopLeft, graphBottomRight }, colours[1], INSET_RECT_F_30);

            // Calculate the Y axis scale (log2 of highest [+/-]balance)
            int32_t yAxisScale = 0;
            for (int32_t i = 0; i < 64; i++)
            {
                auto balance = gameState.Park.ValueHistory[i];
                if (balance == kMoney64Undefined)
                    continue;

                // Modifier balance then keep halving until less than 255 pixels
                balance = std::abs(balance) >> yAxisScale;
                while (balance > 255)
                {
                    balance /= 2;
                    yAxisScale++;
                }
            }

            // Y axis labels
            auto coords = graphTopLeft + ScreenCoordsXY{ 18, 14 };
            money64 axisBase;
            for (axisBase = 24.00_GBP; axisBase >= 0.00_GBP; axisBase -= 6.00_GBP)
            {
                auto axisValue = axisBase << yAxisScale;
                ft = Formatter();
                ft.Add<money64>(axisValue);
                DrawTextBasic(
                    dpi, coords + ScreenCoordsXY{ 70, 0 }, STR_FINANCES_FINANCIAL_GRAPH_CASH_VALUE, ft,
                    { FontStyle::Small, TextAlignment::RIGHT });
                GfxFillRectInset(
                    dpi, { coords + ScreenCoordsXY{ 70, 5 }, { graphTopLeft.x + 482, coords.y + 5 } }, colours[2],
                    INSET_RECT_FLAG_BORDER_INSET);
                coords.y += 39;
            }

            // X axis labels and values
            coords = graphTopLeft + ScreenCoordsXY{ 98, 17 };
            Graph::Draw(dpi, gameState.Park.ValueHistory, 64, coords, yAxisScale, 0);
        }

#pragma endregion

#pragma region Profit Graph Events

        void OnDrawProfitGraph(DrawPixelInfo& dpi)
        {
            auto& gameState = GetGameState();
            Widget* pageWidget = &_windowFinancesCashWidgets[WIDX_PAGE_BACKGROUND];
            auto graphTopLeft = windowPos + ScreenCoordsXY{ pageWidget->left + 4, pageWidget->top + 15 };
            auto graphBottomRight = windowPos + ScreenCoordsXY{ pageWidget->right - 4, pageWidget->bottom - 4 };

            // Weekly profit
            auto ft = Formatter();
            ft.Add<money64>(gameState.CurrentProfit);
            DrawTextBasic(
                dpi, graphTopLeft - ScreenCoordsXY{ 0, 11 },
                gameState.CurrentProfit >= 0 ? STR_FINANCES_WEEKLY_PROFIT_POSITIVE : STR_FINANCES_WEEKLY_PROFIT_LOSS, ft);

            // Graph
            GfxFillRectInset(dpi, { graphTopLeft, graphBottomRight }, colours[1], INSET_RECT_F_30);

            // Calculate the Y axis scale (log2 of highest [+/-]balance)
            int32_t yAxisScale = 0;
            for (int32_t i = 0; i < 64; i++)
            {
                auto balance = gameState.WeeklyProfitHistory[i];
                if (balance == kMoney64Undefined)
                    continue;

                // Modifier balance then keep halving until less than 127 pixels
                balance = std::abs(balance) >> yAxisScale;
                while (balance > 127)
                {
                    balance /= 2;
                    yAxisScale++;
                }
            }

            // Y axis labels
            auto screenPos = graphTopLeft + ScreenCoordsXY{ 18, 14 };
            money64 axisBase;
            for (axisBase = 12.00_GBP; axisBase >= -12.00_GBP; axisBase -= 6.00_GBP)
            {
                money64 axisValue = axisBase << yAxisScale;
                ft = Formatter();
                ft.Add<money64>(axisValue);
                DrawTextBasic(
                    dpi, screenPos + ScreenCoordsXY{ 70, 0 }, STR_FINANCES_FINANCIAL_GRAPH_CASH_VALUE, ft,
                    { FontStyle::Small, TextAlignment::RIGHT });
                GfxFillRectInset(
                    dpi, { screenPos + ScreenCoordsXY{ 70, 5 }, { graphTopLeft.x + 482, screenPos.y + 5 } }, colours[2],
                    INSET_RECT_FLAG_BORDER_INSET);
                screenPos.y += 39;
            }

            // X axis labels and values
            screenPos = graphTopLeft + ScreenCoordsXY{ 98, 17 };
            Graph::Draw(dpi, gameState.WeeklyProfitHistory, 64, screenPos, yAxisScale, 128);
        }

#pragma endregion

#pragma region Marketing Events

        void OnMouseUpMarketing(WidgetIndex widgetIndex)
        {
            if (widgetIndex >= WIDX_CAMPAIGN_1 && widgetIndex <= WIDX_CAMPAIGN_6)
            {
                ContextOpenDetailWindow(WD_NEW_CAMPAIGN, widgetIndex - WIDX_CAMPAIGN_1);
            }
        }

        void OnPrepareDrawMarketing()
        {
            // Count number of active campaigns
            int32_t numActiveCampaigns = static_cast<int32_t>(gMarketingCampaigns.size());
            int32_t y = std::max(1, numActiveCampaigns) * LIST_ROW_HEIGHT + 92;

            // Update group box positions
            _windowFinancesMarketingWidgets[WIDX_ACTIVE_CAMPAIGNS_GROUP].bottom = y - 22;
            _windowFinancesMarketingWidgets[WIDX_CAMPAIGNS_AVAILABLE_GROUP].top = y - 13;

            // Update new campaign button visibility
            y += 3;
            for (int32_t i = 0; i < ADVERTISING_CAMPAIGN_COUNT; i++)
            {
                auto campaignButton = &_windowFinancesMarketingWidgets[WIDX_CAMPAIGN_1 + i];
                auto marketingCampaign = MarketingGetCampaign(i);
                if (marketingCampaign == nullptr && MarketingIsCampaignTypeApplicable(i))
                {
                    campaignButton->type = WindowWidgetType::Button;
                    campaignButton->top = y;
                    campaignButton->bottom = y + BUTTON_FACE_HEIGHT + 1;
                    y += BUTTON_FACE_HEIGHT + 2;
                }
                else
                {
                    campaignButton->type = WindowWidgetType::Empty;
                }
            }
        }

        void OnDrawMarketing(DrawPixelInfo& dpi)
        {
            auto screenCoords = windowPos + ScreenCoordsXY{ 8, 62 };
            int32_t noCampaignsActive = 1;
            for (int32_t i = 0; i < ADVERTISING_CAMPAIGN_COUNT; i++)
            {
                auto marketingCampaign = MarketingGetCampaign(i);
                if (marketingCampaign == nullptr)
                    continue;

                noCampaignsActive = 0;
                auto ft = Formatter();

                // Set special parameters
                switch (i)
                {
                    case ADVERTISING_CAMPAIGN_RIDE_FREE:
                    case ADVERTISING_CAMPAIGN_RIDE:
                    {
                        auto campaignRide = GetRide(marketingCampaign->RideId);
                        if (campaignRide != nullptr)
                        {
                            campaignRide->FormatNameTo(ft);
                        }
                        else
                        {
                            ft.Add<StringId>(STR_NONE);
                        }
                        break;
                    }
                    case ADVERTISING_CAMPAIGN_FOOD_OR_DRINK_FREE:
                        ft.Add<StringId>(GetShopItemDescriptor(marketingCampaign->ShopItemType).Naming.Plural);
                        break;
                    default:
                    {
                        auto parkName = OpenRCT2::GetGameState().Park.Name.c_str();
                        ft.Add<StringId>(STR_STRING);
                        ft.Add<const char*>(parkName);
                    }
                }
                // Advertisement
                DrawTextEllipsised(dpi, screenCoords + ScreenCoordsXY{ 4, 0 }, 296, MarketingCampaignNames[i][1], ft);

                // Duration
                uint16_t weeksRemaining = marketingCampaign->WeeksLeft;
                ft = Formatter();
                ft.Add<uint16_t>(weeksRemaining);
                DrawTextBasic(
                    dpi, screenCoords + ScreenCoordsXY{ 304, 0 },
                    weeksRemaining == 1 ? STR_1_WEEK_REMAINING : STR_X_WEEKS_REMAINING, ft);

                screenCoords.y += LIST_ROW_HEIGHT;
            }

            if (noCampaignsActive)
            {
                DrawTextBasic(dpi, screenCoords + ScreenCoordsXY{ 4, 0 }, STR_MARKETING_CAMPAIGNS_NONE);
                screenCoords.y += LIST_ROW_HEIGHT;
            }
            screenCoords.y += 34;

            // Draw campaign button text
            for (int32_t i = 0; i < ADVERTISING_CAMPAIGN_COUNT; i++)
            {
                auto campaignButton = &_windowFinancesMarketingWidgets[WIDX_CAMPAIGN_1 + i];
                if (campaignButton->type != WindowWidgetType::Empty)
                {
                    // Draw button text
                    DrawTextBasic(dpi, screenCoords + ScreenCoordsXY{ 4, 0 }, MarketingCampaignNames[i][0]);
                    auto ft = Formatter();
                    ft.Add<money64>(AdvertisingCampaignPricePerWeek[i]);
                    DrawTextBasic(dpi, screenCoords + ScreenCoordsXY{ WH_SUMMARY, 0 }, STR_MARKETING_PER_WEEK, ft);

                    screenCoords.y += BUTTON_FACE_HEIGHT + 2;
                }
            }
        }

#pragma endregion

        void InitialiseScrollPosition(WidgetIndex widgetIndex, int32_t scrollId)
        {
            const auto& widget = this->widgets[widgetIndex];
            scrolls[scrollId].h_left = std::max(0, scrolls[scrollId].h_right - (widget.width() - 2));

            WidgetScrollUpdateThumbs(*this, widgetIndex);
        }

        void DrawTabImage(DrawPixelInfo& dpi, int32_t tabPage, int32_t spriteIndex)
        {
            WidgetIndex widgetIndex = WIDX_TAB_1 + tabPage;

            if (!IsWidgetDisabled(widgetIndex))
            {
                if (this->page == tabPage)
                {
                    int32_t frame = frame_no / 2;
                    spriteIndex += (frame % _windowFinancesTabAnimationFrames[this->page]);
                }

                GfxDrawSprite(
                    dpi, ImageId(spriteIndex),
                    windowPos + ScreenCoordsXY{ widgets[widgetIndex].left, widgets[widgetIndex].top });
            }
        }

        void DrawTabImages(DrawPixelInfo& dpi)
        {
            DrawTabImage(dpi, WINDOW_FINANCES_PAGE_SUMMARY, SPR_TAB_FINANCES_SUMMARY_0);
            DrawTabImage(dpi, WINDOW_FINANCES_PAGE_FINANCIAL_GRAPH, SPR_TAB_FINANCES_FINANCIAL_GRAPH_0);
            DrawTabImage(dpi, WINDOW_FINANCES_PAGE_VALUE_GRAPH, SPR_TAB_FINANCES_VALUE_GRAPH_0);
            DrawTabImage(dpi, WINDOW_FINANCES_PAGE_PROFIT_GRAPH, SPR_TAB_FINANCES_PROFIT_GRAPH_0);
            DrawTabImage(dpi, WINDOW_FINANCES_PAGE_MARKETING, SPR_TAB_FINANCES_MARKETING_0);
            DrawTabImage(dpi, WINDOW_FINANCES_PAGE_RESEARCH, SPR_TAB_FINANCES_RESEARCH_0);
        }

        void OnResize() override
        {
            ResizeFrameWithPage();
        }
    };

    static FinancesWindow* FinancesWindowOpen(uint8_t page)
    {
        auto* window = WindowFocusOrCreate<FinancesWindow>(WindowClass::Finances, WW_OTHER_TABS, WH_SUMMARY, WF_10);

        if (window != nullptr && page != WINDOW_FINANCES_PAGE_SUMMARY)
            window->SetPage(page);

        return window;
    }

    WindowBase* FinancesOpen()
    {
        return WindowFocusOrCreate<FinancesWindow>(WindowClass::Finances, WW_OTHER_TABS, WH_SUMMARY, WF_10);
    }

    WindowBase* FinancesResearchOpen()
    {
        return FinancesWindowOpen(WINDOW_FINANCES_PAGE_RESEARCH);
    }

    WindowBase* FinancesMarketingOpen()
    {
        return FinancesWindowOpen(WINDOW_FINANCES_PAGE_MARKETING);
    }
} // namespace OpenRCT2::Ui::Windows