#include "apps/debug_console_page.h"

#include "debug_auth.h"
#include "services/debug_console.h"
#include "ui/fonts.h"
#include "ui/widgets.h"

namespace roro {

void DebugConsolePage::enter() {
    list_.setCount(kRows);
    confirm_.reset();
    typing_ = false;
    refusal_.clear();
}

bool DebugConsolePage::onKey(const KeyEvent& e) {
    if (confirm_) {
        confirm_->onKey(e);
        if (confirm_->result() == 1) {
            if (ask_ == Ask::SwitchOn) DebugConsole::switchOn(settings_);
            else settings_.setString(Setting::DebugToken, DebugConsole::freshToken());
        }
        if (confirm_->result() != DialogModel::kPending) confirm_.reset();
        return true;
    }
    if (typing_) {
        switch (e.key) {
            case Key::Char: editor_.insert(e.ch); break;
            case Key::Delete: editor_.backspace(); break;
            case Key::Left: editor_.left(); break;
            case Key::Right: editor_.right(); break;
            case Key::Back: typing_ = false; break;
            case Key::Select: {
                std::string token = debug::tidyToken(editor_.text());
                if (debug::validToken(token) && settings_.setString(Setting::DebugToken, token)) typing_ = false;
                else refusal_ = "16 to 64 characters, please";
                break;
            }
            default: break;
        }
        return true;
    }
    switch (e.key) {
        case Key::Up: list_.up(); break;
        case Key::Down: list_.down(); break;
        case Key::Back: return false;
        case Key::Left:
        case Key::Right:
        case Key::Select:
            if (e.key != Key::Select && list_.selected() != kSwitch) break;
            switch (list_.selected()) {
                case kSwitch:
                    if (settings_.getBool(Setting::DebugConsole)) settings_.setBool(Setting::DebugConsole, false);
                    else {  // on is the one to think about
                        ask_ = Ask::SwitchOn;
                        confirm_.reset(new DialogModel({"Cancel", "Switch on"}));
                    }
                    break;
                case kNewToken:
                    ask_ = Ask::NewToken;
                    confirm_.reset(new DialogModel({"Cancel", "New token"}));
                    break;
                case kTypeToken:
                    editor_ = LineEditor(64);
                    refusal_.clear();
                    typing_ = true;
                    break;
                default: break;
            }
            break;
        default: break;
    }
    return true;
}

void DebugConsolePage::help(std::vector<KeyHelp>& out) const {
    if (confirm_) return help::dialog(out);
    if (typing_) return help::textEntry(out);
    help::list(out, "switch, or open");
    out.push_back({", /", "switch the console on or off"});
}

void DebugConsolePage::draw(Canvas& c) {
    const auto& area = theme::kContent;
    c.setTextDatum(top_left);
    if (typing_) {
        c.setFont(&fonts::body);
        c.setTextColor(theme::kMuted);
        c.drawString("A token of your own", 4, area.y + 4);
        widgets::lineEditor(c, editor_, {4, area.y + 22, area.w - 8, 0});
        c.setTextColor(refusal_.empty() ? theme::kMuted : theme::kWarning);
        c.drawString(refusal_.empty() ? "16 to 64 characters. Capitals or not, it's the same." : refusal_.c_str(), 4, area.y + 44);
        return;
    }

    bool on = settings_.getBool(Setting::DebugConsole);
    std::string ip = wifi_.ip();
    widgets::list(
        c, list_, {area.x, area.y, area.w, kRows * theme::kLineHeight},
        [](int i) -> std::string {
            switch (i) {
                case kSwitch: return "Debug Console";
                case kAddress: return "Connect to";
                case kNewToken: return "New token";
                default: return "Type a token";
            }
        },
        [&](int i) -> std::string {
            switch (i) {
                case kSwitch: return on ? "On" : "Off";
                case kAddress: return !on ? "-" : ip.empty() ? "Wi-Fi not connected" : ip + ":" + std::to_string(DebugConsole::kPort);
                default: return ">";
            }
        });

    // The token: here, in full, and nowhere else (it's never printed on a console). One the device
    // made is drawn at twice the size, three groups then two: it has to be read and typed.
    int y = area.y + kRows * theme::kLineHeight + 4;
    c.drawFastHLine(4, y - 2, area.w - 8, theme::kMuted);
    const std::string& token = settings_.getString(Setting::DebugToken);
    std::string shown = debug::groupToken(token);
    c.setFont(&fonts::body);
    if (token.empty()) {
        c.setTextColor(theme::kMuted);
        c.drawString("No token yet: one is made when", 4, y + 4);
        c.drawString("you switch the console on.", 4, y + 4 + theme::kLineHeight);
    } else if (token.size() <= debug::kTokenChars) {
        c.setTextColor(theme::kText);
        c.setTextSize(2);
        c.drawString(shown.substr(0, 14).c_str(), 4, y + 2);
        if (shown.size() > 15) c.drawString(shown.substr(15).c_str(), 4, y + 2 + 2 * theme::kLineHeight - 3);
        c.setTextSize(1);
    } else {
        c.setTextColor(theme::kText);
        for (size_t at = 0; at < shown.size(); at += 35, y += theme::kLineHeight) c.drawString(shown.substr(at, 35).c_str(), 4, y + 2);
    }
    c.setFont(&fonts::small);
    c.setTextColor(on ? theme::kWarning : theme::kMuted);
    c.drawString(on ? "On this Wi-Fi, the token is full control." : "Off: nothing listens.", 4, area.y + area.h - 9);

    if (confirm_) {
        if (ask_ == Ask::SwitchOn)
            widgets::dialog(c, "Switch it on?", "With the token, anyone on this Wi-Fi can read the console, press keys and copy files.", *confirm_);
        else widgets::dialog(c, "A new token?", "The one in use stops working, and whoever is connected is cut off.", *confirm_);
    }
}

}  // namespace roro