#include "PrintHostDialogs.hpp"

#include <algorithm>

#include <wx/frame.h>
#include <wx/progdlg.h>
#include <wx/sizer.h>
#include <wx/stattext.h>
#include <wx/textctrl.h>
#include <wx/checkbox.h>
#include <wx/button.h>
#include <wx/dataview.h>
#include <wx/wupdlock.h>
#include <wx/debug.h>

#include "GUI.hpp"
#include "GUI_App.hpp"
#include "MsgDialog.hpp"
#include "I18N.hpp"
#include "../Utils/PrintHost.hpp"
#include "wxExtensions.hpp"
#include "MainFrame.hpp"
#include "libslic3r/AppConfig.hpp"

namespace fs = boost::filesystem;

namespace Slic3r {
namespace GUI {

static const char *CONFIG_KEY_PATH  = "printhost_path";
static const char *CONFIG_KEY_PRINT = "printhost_print";
static const char *CONFIG_KEY_GROUP = "printhost_group";

PrintHostSendDialog::PrintHostSendDialog(const fs::path &path, bool can_start_print, const wxArrayString &groups)
    : MsgDialog(static_cast<wxWindow*>(wxGetApp().mainframe), _L("Send G-Code to printer host"), _L("Upload to Printer Host with the following filename:"), wxID_NONE)
    , txt_filename(new wxTextCtrl(this, wxID_ANY))
    , box_print(can_start_print ? new wxCheckBox(this, wxID_ANY, _L("Start printing after upload")) : nullptr)
    , combo_groups(!groups.IsEmpty() ? new wxComboBox(this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, groups, wxCB_READONLY) : nullptr)
{
#ifdef __APPLE__
    txt_filename->OSXDisableAllSmartSubstitutions();
#endif
    const AppConfig *app_config = wxGetApp().app_config;

    auto *label_dir_hint = new wxStaticText(this, wxID_ANY, _L("Use forward slashes ( / ) as a directory separator if needed."));
    label_dir_hint->Wrap(CONTENT_WIDTH * wxGetApp().em_unit());

    content_sizer->Add(txt_filename, 0, wxEXPAND);
    content_sizer->Add(label_dir_hint);
    content_sizer->AddSpacer(VERT_SPACING);
    if (box_print != nullptr) {
        content_sizer->Add(box_print, 0, wxBOTTOM, 2*VERT_SPACING);
        box_print->SetValue(app_config->get("recent", CONFIG_KEY_PRINT) == "1");
    }
    
    if (combo_groups != nullptr) {
        // Repetier specific: Show a selection of file groups.
        auto *label_group = new wxStaticText(this, wxID_ANY, _L("Group"));
        content_sizer->Add(label_group);
        content_sizer->Add(combo_groups, 0, wxBOTTOM, 2*VERT_SPACING);        
        wxString recent_group = from_u8(app_config->get("recent", CONFIG_KEY_GROUP));
        if (! recent_group.empty())
            combo_groups->SetValue(recent_group);
    }

    btn_sizer->Add(CreateStdDialogButtonSizer(wxOK | wxCANCEL));

    wxString recent_path = from_u8(app_config->get("recent", CONFIG_KEY_PATH));
    if (recent_path.Length() > 0 && recent_path[recent_path.Length() - 1] != '/') {
        recent_path += '/';
    }
    const auto recent_path_len = recent_path.Length();
    recent_path += path.filename().wstring();
    wxString stem(path.stem().wstring());
    const auto stem_len = stem.Length();

    txt_filename->SetValue(recent_path);
    txt_filename->SetFocus();
    
    Fit();
    CenterOnParent();

#ifdef __linux__
    // On Linux with GTK2 when text control lose the focus then selection (colored background) disappears but text color stay white
    // and as a result the text is invisible with light mode
    // see https://github.com/prusa3d/PrusaSlicer/issues/4532
    // Workaround: Unselect text selection explicitly on kill focus
    txt_filename->Bind(wxEVT_KILL_FOCUS, [this](wxEvent& e) {
        e.Skip();
        txt_filename->SetInsertionPoint(txt_filename->GetLastPosition());
    }, txt_filename->GetId());
#endif /* __linux__ */

    Bind(wxEVT_SHOW, [=](const wxShowEvent &) {
        // Another similar case where the function only works with EVT_SHOW + CallAfter,
        // this time on Mac.
        CallAfter([=]() {
            txt_filename->SetSelection(recent_path_len, recent_path_len + stem_len);
        });
    });
}

fs::path PrintHostSendDialog::filename() const
{
    return into_path(txt_filename->GetValue());
}

bool PrintHostSendDialog::start_print() const
{
    return box_print != nullptr ? box_print->GetValue() : false;
}

std::string PrintHostSendDialog::group() const
{
     if (combo_groups == nullptr) {
         return "";
     } else {
         wxString group = combo_groups->GetValue();
         return into_u8(group);
    }
}

void PrintHostSendDialog::EndModal(int ret)
{
    if (ret == wxID_OK) {
        // Persist path and print settings
        wxString path = txt_filename->GetValue();
        int last_slash = path.Find('/', true);
		if (last_slash == wxNOT_FOUND)
			path.clear();
		else
            path = path.SubString(0, last_slash);
                
		AppConfig *app_config = wxGetApp().app_config;
		app_config->set("recent", CONFIG_KEY_PATH, into_u8(path));
        app_config->set("recent", CONFIG_KEY_PRINT, start_print() ? "1" : "0");
        
        if (combo_groups != nullptr) {
            wxString group = combo_groups->GetValue();
            app_config->set("recent", CONFIG_KEY_GROUP, into_u8(group));
        }
    }

    MsgDialog::EndModal(ret);
}



wxDEFINE_EVENT(EVT_PRINTHOST_PROGRESS, PrintHostQueueDialog::Event);
wxDEFINE_EVENT(EVT_PRINTHOST_ERROR,    PrintHostQueueDialog::Event);
wxDEFINE_EVENT(EVT_PRINTHOST_CANCEL,   PrintHostQueueDialog::Event);

PrintHostQueueDialog::Event::Event(wxEventType eventType, int winid, size_t job_id)
    : wxEvent(winid, eventType)
    , job_id(job_id)
{}

PrintHostQueueDialog::Event::Event(wxEventType eventType, int winid, size_t job_id, int progress)
    : wxEvent(winid, eventType)
    , job_id(job_id)
    , progress(progress)
{}

PrintHostQueueDialog::Event::Event(wxEventType eventType, int winid, size_t job_id, wxString error)
    : wxEvent(winid, eventType)
    , job_id(job_id)
    , error(std::move(error))
{}

wxEvent *PrintHostQueueDialog::Event::Clone() const
{
    return new Event(*this);
}

PrintHostQueueDialog::PrintHostQueueDialog(wxWindow *parent)
    : DPIDialog(parent, wxID_ANY, _L("Print host upload queue"), wxDefaultPosition, wxDefaultSize, wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
    , on_progress_evt(this, EVT_PRINTHOST_PROGRESS, &PrintHostQueueDialog::on_progress, this)
    , on_error_evt(this, EVT_PRINTHOST_ERROR, &PrintHostQueueDialog::on_error, this)
    , on_cancel_evt(this, EVT_PRINTHOST_CANCEL, &PrintHostQueueDialog::on_cancel, this)
{
    const auto em = GetTextExtent("m").x;

    auto *topsizer = new wxBoxSizer(wxVERTICAL);

    job_list = new wxDataViewListCtrl(this, wxID_ANY);
    // Note: Keep these in sync with Column
    job_list->AppendTextColumn(_L("ID"), wxDATAVIEW_CELL_INERT);
    job_list->AppendProgressColumn(_L("Progress"), wxDATAVIEW_CELL_INERT);
    job_list->AppendTextColumn(_L("Status"), wxDATAVIEW_CELL_INERT);
    job_list->AppendTextColumn(_L("Host"), wxDATAVIEW_CELL_INERT);
    job_list->AppendTextColumn(_L("Filename"), wxDATAVIEW_CELL_INERT);
    job_list->AppendTextColumn(_L("Error Message"), wxDATAVIEW_CELL_INERT, -1, wxALIGN_CENTER, wxDATAVIEW_COL_HIDDEN);

    auto *btnsizer = new wxBoxSizer(wxHORIZONTAL);
    btn_cancel = new wxButton(this, wxID_DELETE, _L("Cancel selected"));
    btn_cancel->Disable();
    btn_error = new wxButton(this, wxID_ANY, _L("Show error message"));
    btn_error->Disable();
    // Note: The label needs to be present, otherwise we get accelerator bugs on Mac
    auto *btn_close = new wxButton(this, wxID_CANCEL, _L("Close"));
    btnsizer->Add(btn_cancel, 0, wxRIGHT, SPACING);
    btnsizer->Add(btn_error, 0);
    btnsizer->AddStretchSpacer();
    btnsizer->Add(btn_close);

    topsizer->Add(job_list, 1, wxEXPAND | wxBOTTOM, SPACING);
    topsizer->Add(btnsizer, 0, wxEXPAND);
    SetSizer(topsizer);

    SetSize(wxSize(HEIGHT * em, WIDTH * em));

    job_list->Bind(wxEVT_DATAVIEW_SELECTION_CHANGED, [this](wxDataViewEvent&) { on_list_select(); });

    btn_cancel->Bind(wxEVT_BUTTON, [this](wxCommandEvent&) {
        int selected = job_list->GetSelectedRow();
        if (selected == wxNOT_FOUND) { return; }

        const JobState state = get_state(selected);
        if (state < ST_ERROR) {
            // TODO: cancel
            GUI::wxGetApp().printhost_job_queue().cancel(selected);
        }
    });

    btn_error->Bind(wxEVT_BUTTON, [this](wxCommandEvent&) {
        int selected = job_list->GetSelectedRow();
        if (selected == wxNOT_FOUND) { return; }
        GUI::show_error(nullptr, job_list->GetTextValue(selected, COL_ERRORMSG));
    });
}

void PrintHostQueueDialog::append_job(const PrintHostJob &job)
{
    wxCHECK_RET(!job.empty(), "PrintHostQueueDialog: Attempt to append an empty job");

    wxVector<wxVariant> fields;
    fields.push_back(wxVariant(wxString::Format("%d", job_list->GetItemCount() + 1)));
    fields.push_back(wxVariant(0));
    fields.push_back(wxVariant(_L("Enqueued")));
    fields.push_back(wxVariant(job.printhost->get_host()));
    fields.push_back(wxVariant(job.upload_data.upload_path.string()));
    fields.push_back(wxVariant(""));
    job_list->AppendItem(fields, static_cast<wxUIntPtr>(ST_NEW));
    // Both strings are UTF-8 encoded.
    upload_names.emplace_back(job.printhost->get_host(), job.upload_data.upload_path.string());
}

void PrintHostQueueDialog::on_dpi_changed(const wxRect &suggested_rect)
{
    const int& em = em_unit();

    msw_buttons_rescale(this, em, { wxID_DELETE, wxID_CANCEL, btn_error->GetId() });

    SetMinSize(wxSize(HEIGHT * em, WIDTH * em));

    Fit();
    Refresh();
}

PrintHostQueueDialog::JobState PrintHostQueueDialog::get_state(int idx)
{
    wxCHECK_MSG(idx >= 0 && idx < job_list->GetItemCount(), ST_ERROR, "Out of bounds access to job list");
    return static_cast<JobState>(job_list->GetItemData(job_list->RowToItem(idx)));
}

void PrintHostQueueDialog::set_state(int idx, JobState state)
{
    wxCHECK_RET(idx >= 0 && idx < job_list->GetItemCount(), "Out of bounds access to job list");
    job_list->SetItemData(job_list->RowToItem(idx), static_cast<wxUIntPtr>(state));

    switch (state) {
        case ST_NEW:        job_list->SetValue(_L("Enqueued"), idx, COL_STATUS); break;
        case ST_PROGRESS:   job_list->SetValue(_L("Uploading"), idx, COL_STATUS); break;
        case ST_ERROR:      job_list->SetValue(_L("Error"), idx, COL_STATUS); break;
        case ST_CANCELLING: job_list->SetValue(_L("Cancelling"), idx, COL_STATUS); break;
        case ST_CANCELLED:  job_list->SetValue(_L("Cancelled"), idx, COL_STATUS); break;
        case ST_COMPLETED:  job_list->SetValue(_L("Completed"), idx, COL_STATUS); break;
    }
}

void PrintHostQueueDialog::on_list_select()
{
    int selected = job_list->GetSelectedRow();
    if (selected != wxNOT_FOUND) {
        const JobState state = get_state(selected);
        btn_cancel->Enable(state < ST_ERROR);
        btn_error->Enable(state == ST_ERROR);
        Layout();
    } else {
        btn_cancel->Disable();
    }
}

void PrintHostQueueDialog::on_progress(Event &evt)
{
    wxCHECK_RET(evt.job_id < (size_t)job_list->GetItemCount(), "Out of bounds access to job list");

    if (evt.progress < 100) {
        set_state(evt.job_id, ST_PROGRESS);
        job_list->SetValue(wxVariant(evt.progress), evt.job_id, COL_PROGRESS);
    } else {
        set_state(evt.job_id, ST_COMPLETED);
        job_list->SetValue(wxVariant(100), evt.job_id, COL_PROGRESS);
    }

    on_list_select();
}

void PrintHostQueueDialog::on_error(Event &evt)
{
    wxCHECK_RET(evt.job_id < (size_t)job_list->GetItemCount(), "Out of bounds access to job list");

    set_state(evt.job_id, ST_ERROR);

    auto errormsg = from_u8((boost::format("%1%\n%2%") % _utf8(L("Error uploading to print host:")) % std::string(evt.error.ToUTF8())).str());
    job_list->SetValue(wxVariant(0), evt.job_id, COL_PROGRESS);
    job_list->SetValue(wxVariant(errormsg), evt.job_id, COL_ERRORMSG);    // Stashes the error message into a hidden column for later

    on_list_select();

    GUI::show_error(nullptr, errormsg);
}

void PrintHostQueueDialog::on_cancel(Event &evt)
{
    wxCHECK_RET(evt.job_id < (size_t)job_list->GetItemCount(), "Out of bounds access to job list");

    set_state(evt.job_id, ST_CANCELLED);
    job_list->SetValue(wxVariant(0), evt.job_id, COL_PROGRESS);

    on_list_select();
}
void PrintHostQueueDialog::get_active_jobs(std::vector<std::pair<std::string, std::string>>& ret)
{
    int ic = job_list->GetItemCount();
    for (size_t i = 0; i < ic; i++)
    {
        auto item = job_list->RowToItem(i);
        auto data = job_list->GetItemData(item);
        JobState st = static_cast<JobState>(data);
        if(st == JobState::ST_NEW || st == JobState::ST_PROGRESS)
            ret.emplace_back(upload_names[i]);       
    }
    //job_list->data
}
}}