#pragma once

#include <XCEngine/UI/DrawData.h>

#include <string>
#include <string_view>

namespace XCEngine::UI::Editor::Widgets {

struct UIEditorPanelChromeState {
    bool active = false;
    bool hovered = false;
};

struct UIEditorPanelChromeText {
    std::string_view title = {};
    std::string_view subtitle = {};
    std::string_view footer = {};
};

struct UIEditorPanelChromeMetrics {
    float cornerRounding = 18.0f;
    float headerHeight = 42.0f;
    float titleInsetX = 16.0f;
    float titleInsetY = 12.0f;
    float subtitleInsetY = 28.0f;
    float footerInsetX = 16.0f;
    float footerInsetBottom = 18.0f;
    float activeBorderThickness = 2.0f;
    float inactiveBorderThickness = 1.0f;
};

struct UIEditorPanelChromePalette {
    ::XCEngine::UI::UIColor surfaceColor =
        ::XCEngine::UI::UIColor(9.0f / 255.0f, 13.0f / 255.0f, 18.0f / 255.0f, 212.0f / 255.0f);
    ::XCEngine::UI::UIColor borderColor =
        ::XCEngine::UI::UIColor(53.0f / 255.0f, 72.0f / 255.0f, 96.0f / 255.0f, 1.0f);
    ::XCEngine::UI::UIColor accentColor =
        ::XCEngine::UI::UIColor(84.0f / 255.0f, 176.0f / 255.0f, 244.0f / 255.0f, 1.0f);
    ::XCEngine::UI::UIColor hoveredAccentColor =
        ::XCEngine::UI::UIColor(1.0f, 206.0f / 255.0f, 112.0f / 255.0f, 1.0f);
    ::XCEngine::UI::UIColor headerColor =
        ::XCEngine::UI::UIColor(13.0f / 255.0f, 20.0f / 255.0f, 28.0f / 255.0f, 242.0f / 255.0f);
    ::XCEngine::UI::UIColor textPrimary =
        ::XCEngine::UI::UIColor(232.0f / 255.0f, 238.0f / 255.0f, 246.0f / 255.0f, 1.0f);
    ::XCEngine::UI::UIColor textSecondary =
        ::XCEngine::UI::UIColor(150.0f / 255.0f, 164.0f / 255.0f, 184.0f / 255.0f, 1.0f);
    ::XCEngine::UI::UIColor textMuted =
        ::XCEngine::UI::UIColor(108.0f / 255.0f, 123.0f / 255.0f, 145.0f / 255.0f, 1.0f);
};

inline ::XCEngine::UI::UIRect BuildUIEditorPanelChromeHeaderRect(
    const ::XCEngine::UI::UIRect& panelRect,
    const UIEditorPanelChromeMetrics& metrics = {}) {
    return ::XCEngine::UI::UIRect(
        panelRect.x,
        panelRect.y,
        panelRect.width,
        metrics.headerHeight);
}

inline ::XCEngine::UI::UIColor ResolveUIEditorPanelChromeBorderColor(
    const UIEditorPanelChromeState& state,
    const UIEditorPanelChromePalette& palette = {}) {
    if (state.active) {
        return palette.accentColor;
    }

    if (state.hovered) {
        return palette.hoveredAccentColor;
    }

    return palette.borderColor;
}

inline float ResolveUIEditorPanelChromeBorderThickness(
    const UIEditorPanelChromeState& state,
    const UIEditorPanelChromeMetrics& metrics = {}) {
    return state.active
        ? metrics.activeBorderThickness
        : metrics.inactiveBorderThickness;
}

inline void AppendUIEditorPanelChromeBackground(
    ::XCEngine::UI::UIDrawList& drawList,
    const ::XCEngine::UI::UIRect& panelRect,
    const UIEditorPanelChromeState& state,
    const UIEditorPanelChromePalette& palette = {},
    const UIEditorPanelChromeMetrics& metrics = {}) {
    drawList.AddFilledRect(panelRect, palette.surfaceColor, metrics.cornerRounding);
    drawList.AddRectOutline(
        panelRect,
        ResolveUIEditorPanelChromeBorderColor(state, palette),
        ResolveUIEditorPanelChromeBorderThickness(state, metrics),
        metrics.cornerRounding);
    drawList.AddFilledRect(
        BuildUIEditorPanelChromeHeaderRect(panelRect, metrics),
        palette.headerColor,
        metrics.cornerRounding);
}

inline void AppendUIEditorPanelChromeForeground(
    ::XCEngine::UI::UIDrawList& drawList,
    const ::XCEngine::UI::UIRect& panelRect,
    const UIEditorPanelChromeText& text,
    const UIEditorPanelChromePalette& palette = {},
    const UIEditorPanelChromeMetrics& metrics = {}) {
    if (!text.title.empty()) {
        drawList.AddText(
            ::XCEngine::UI::UIPoint(panelRect.x + metrics.titleInsetX, panelRect.y + metrics.titleInsetY),
            std::string(text.title),
            palette.textPrimary);
    }

    if (!text.subtitle.empty()) {
        drawList.AddText(
            ::XCEngine::UI::UIPoint(panelRect.x + metrics.titleInsetX, panelRect.y + metrics.subtitleInsetY),
            std::string(text.subtitle),
            palette.textSecondary);
    }

    if (!text.footer.empty()) {
        drawList.AddText(
            ::XCEngine::UI::UIPoint(
                panelRect.x + metrics.footerInsetX,
                panelRect.y + panelRect.height - metrics.footerInsetBottom),
            std::string(text.footer),
            palette.textMuted);
    }
}

} // namespace XCEngine::UI::Editor::Widgets