#include "aboutwindow.h"
#include <SplitView.h>
#include <license.hpp>
#include <GroupLayout.h>
#include <SplitView.h>
#include <StringView.h>
#include <ScrollView.h>
#include "main_window.h"
#define CMD_LOAD_LICENSE 0x40
LicenseItem::LicenseItem(const LicenseData license) : BStringItem("") {
	SetText(fmt::format("{} ({})", license.Project, license.Spdx).c_str());
	this->license_text = license.LicenseContents;
}
	
AboutWindow::AboutWindow() : BWindow(BRect(100, 100, 600, 400), "About Looper", B_TITLED_WINDOW, B_AUTO_UPDATE_SIZE_LIMITS) {
	BGroupLayout *root_layout = new BGroupLayout(B_VERTICAL);
	float minW, minH, maxW, maxH;
	GetSizeLimits(&minW, &maxW, &minH, &maxH);
	SetLayout(root_layout);
	root_layout->SetSpacing(0.0);
	BFont *title_font = new BFont();
	title_font->SetSize(title_font->Size() * 4.0);
    BStringView *looper_title = new BStringView("about:title", "Looper");
    looper_title->SetAlignment(B_ALIGN_HORIZONTAL_CENTER);
    looper_title->SetFont(title_font);
    float title_height, version_height;
    looper_title->GetPreferredSize(NULL, &title_height);
    looper_title->SetExplicitMaxSize(BSize(maxW, title_height));
    looper_title->ResizeToPreferred();
    BStringView *version_text = new BStringView("about:version_text", fmt::format("Version {}", TAG).c_str());
    version_text->SetAlignment(B_ALIGN_HORIZONTAL_CENTER);
    version_text->GetPreferredSize(NULL, &version_height);
    version_text->SetExplicitMaxSize(BSize(maxW, version_height));
    version_text->ResizeToPreferred();
    BLayoutItem *title_item = root_layout->AddView(looper_title);
    BLayoutItem *version_item = root_layout->AddView(version_text);
    title_item->SetExplicitAlignment(BAlignment(B_ALIGN_HORIZONTAL_CENTER, B_ALIGN_VERTICAL_CENTER));
    version_item->SetExplicitAlignment(BAlignment(B_ALIGN_HORIZONTAL_CENTER, B_ALIGN_VERTICAL_CENTER));
    BSplitView *view = new BSplitView();
    view->SetExplicitMaxSize(BSize(maxW, maxH));
    root_layout->AddView(view);
	license_list = new BListView();
	license_list->SetTarget(this);
    for (auto &license : get_license_data()) {
        license_list->AddItem(new LicenseItem(license));
    }
    license_list->SetSelectionMessage(new BMessage(CMD_LOAD_LICENSE));
    BScrollView *license_list_scroller = new BScrollView("about:license-list-scroller", license_list, B_FOLLOW_ALL_SIDES, B_SUPPORTS_LAYOUT|B_FRAME_EVENTS, false, true);
    license_text = new BTextView("about:license-text");
    license_text->MakeEditable(false);
    BScrollView *license_text_scroller = new BScrollView("about:license-text-scroller", license_text, B_FOLLOW_ALL_SIDES, B_SUPPORTS_LAYOUT|B_FRAME_EVENTS, false, true);
    view->AddChild(license_list_scroller);
    view->AddChild(license_text_scroller);
    license_list->Select(0);
    InvalidateLayout(true);
    UpdateIfNeeded();
}
void AboutWindow::Show() {
	BWindow::Show();
}
bool AboutWindow::QuitRequested() {
	Hide();
	return quitting;
}
void AboutWindow::MessageReceived(BMessage *msg) {
    if (msg->IsSystem()) return;
	if (msg->what == CMD_LOAD_LICENSE) {
		auto selection = license_list->ItemAt(msg->GetInt32("index", 0));
		std::string str = ((LicenseItem*)selection)->license_text;
		
		license_text->SetText(str.c_str());
		
	}	
}