#include <unity.h>

#include "../memory_store.h"
#include "event_bus.h"
#include "settings_menu.h"

using namespace roro;

struct Fixture {
    MemoryStore store;
    EventBus bus;
    Settings settings{store, bus};
    SettingsMenu menu{settings};
    Fixture() { settings.load(); }
    int row(SettingsMenu::Row r) {
        for (int i = 0; i < menu.count(); i++)
            if (menu.row(i) == r) return i;
        return -1;
    }
};

void setUp() {}
void tearDown() {}

void test_every_row_has_a_label() {
    Fixture f;
    TEST_ASSERT_TRUE(f.menu.count() > 0);
    for (int i = 0; i < f.menu.count(); i++) TEST_ASSERT_FALSE(f.menu.label(i).empty());
}

void test_values_are_human_readable() {
    Fixture f;
    TEST_ASSERT_EQUAL_STRING("60%", f.menu.value(f.row(SettingsMenu::Row::Brightness)).c_str());
    TEST_ASSERT_EQUAL_STRING("30 s", f.menu.value(f.row(SettingsMenu::Row::DimTimeout)).c_str());
    TEST_ASSERT_EQUAL_STRING("1 min", f.menu.value(f.row(SettingsMenu::Row::OffTimeout)).c_str());
    TEST_ASSERT_EQUAL_STRING("On", f.menu.value(f.row(SettingsMenu::Row::Sound)).c_str());
    TEST_ASSERT_EQUAL_STRING("Brussels", f.menu.value(f.row(SettingsMenu::Row::Timezone)).c_str());
    TEST_ASSERT_EQUAL_STRING("Raw", f.menu.value(f.row(SettingsMenu::Row::ProbeMacs)).c_str());
}

void test_toggle_rows_flip_on_select() {
    Fixture f;
    int sound = f.row(SettingsMenu::Row::Sound);
    TEST_ASSERT_EQUAL(static_cast<int>(SettingsMenu::Kind::Toggle), static_cast<int>(f.menu.kind(sound)));
    f.menu.toggle(sound);
    TEST_ASSERT_FALSE(f.settings.getBool(Setting::Sound));
}

void test_choice_rows_list_options_and_mark_the_current_one() {
    Fixture f;
    int tz = f.row(SettingsMenu::Row::Timezone);
    TEST_ASSERT_EQUAL(static_cast<int>(SettingsMenu::Kind::Choice), static_cast<int>(f.menu.kind(tz)));
    auto options = f.menu.choices(tz);
    TEST_ASSERT_TRUE(options.size() >= 3);
    TEST_ASSERT_EQUAL_STRING("Brussels", options[f.menu.currentChoice(tz)].c_str());
}

void test_choosing_applies_the_setting() {
    Fixture f;
    int tz = f.row(SettingsMenu::Row::Timezone);
    auto options = f.menu.choices(tz);
    int utc = -1;
    for (size_t i = 0; i < options.size(); i++)
        if (options[i] == "UTC") utc = static_cast<int>(i);
    TEST_ASSERT_TRUE(f.menu.choose(tz, utc).empty());
    TEST_ASSERT_EQUAL_STRING("UTC0", f.settings.getString(Setting::Timezone).c_str());
}

void test_choice_that_breaks_a_rule_is_refused_with_a_reason() {
    Fixture f;
    int dim = f.row(SettingsMenu::Row::DimTimeout);
    auto options = f.menu.choices(dim);
    int fiveMinutes = -1;
    for (size_t i = 0; i < options.size(); i++)
        if (options[i] == "5 min") fiveMinutes = static_cast<int>(i);
    TEST_ASSERT_TRUE(fiveMinutes >= 0);
    std::string error = f.menu.choose(dim, fiveMinutes);  // screen off is 1 min
    TEST_ASSERT_FALSE(error.empty());
    TEST_ASSERT_EQUAL(30, f.settings.getInt(Setting::DimTimeoutS));
}

void test_brightness_steps_with_left_right_within_bounds() {
    Fixture f;
    int b = f.row(SettingsMenu::Row::Brightness);
    TEST_ASSERT_EQUAL(static_cast<int>(SettingsMenu::Kind::Slider), static_cast<int>(f.menu.kind(b)));
    f.menu.adjust(b, +1);
    TEST_ASSERT_EQUAL(70, f.settings.getInt(Setting::Brightness));
    for (int i = 0; i < 10; i++) f.menu.adjust(b, -1);
    TEST_ASSERT_EQUAL(10, f.settings.getInt(Setting::Brightness));
}

void test_wifi_is_a_page() {
    Fixture f;
    int wifi = f.row(SettingsMenu::Row::Wifi);
    TEST_ASSERT_TRUE(wifi >= 0);
    TEST_ASSERT_EQUAL(static_cast<int>(SettingsMenu::Kind::Page), static_cast<int>(f.menu.kind(wifi)));
    TEST_ASSERT_EQUAL_STRING("On", f.menu.value(wifi).c_str());
}

void test_names_are_text_rows_with_their_byte_limits() {
    Fixture f;
    int shortName = f.row(SettingsMenu::Row::ShortName);
    TEST_ASSERT_EQUAL(static_cast<int>(SettingsMenu::Kind::Text), static_cast<int>(f.menu.kind(shortName)));
    TEST_ASSERT_EQUAL(4, f.menu.maxBytes(shortName));
    TEST_ASSERT_FALSE(f.menu.setText(shortName, "TOOLONG").empty());
    TEST_ASSERT_TRUE(f.menu.setText(shortName, "RORO").empty());
    TEST_ASSERT_EQUAL_STRING("RORO", f.menu.value(shortName).c_str());
}

// Issue #20: the GNSS receiver raises the LoRa radio's noise floor by 8 dB while it runs. Pausing
// it while the radio listens is offered, and off unless chosen (GNSS on by default: M2, Q58).
void test_pause_gnss_for_lora_is_off_by_default() {
    Fixture f;
    int quiet = f.row(SettingsMenu::Row::GnssQuiet);
    TEST_ASSERT_EQUAL_STRING("Pause GNSS for LoRa", f.menu.label(quiet).c_str());
    TEST_ASSERT_EQUAL_STRING("Off", f.menu.value(quiet).c_str());
    f.menu.toggle(quiet);
    TEST_ASSERT_TRUE(f.settings.getBool(Setting::GnssQuietForLora));
    TEST_ASSERT_EQUAL_STRING("On", f.menu.value(quiet).c_str());
    TEST_ASSERT_TRUE(f.settings.getBool(Setting::GnssEnabled));  // the GNSS switch itself is untouched
}

void test_gnss_and_coordinate_rows_toggle() {
    Fixture f;
    int gnss = f.row(SettingsMenu::Row::Gnss), coords = f.row(SettingsMenu::Row::Coordinates);
    TEST_ASSERT_EQUAL_STRING("On", f.menu.value(gnss).c_str());
    TEST_ASSERT_EQUAL_STRING("Decimal", f.menu.value(coords).c_str());
    f.menu.toggle(gnss);
    f.menu.toggle(coords);
    TEST_ASSERT_FALSE(f.settings.getBool(Setting::GnssEnabled));
    TEST_ASSERT_TRUE(f.settings.getBool(Setting::CoordinatesDms));
    TEST_ASSERT_EQUAL_STRING("Off", f.menu.value(gnss).c_str());
    TEST_ASSERT_EQUAL_STRING("Deg min sec", f.menu.value(coords).c_str());
}

int main() {
    UNITY_BEGIN();
    RUN_TEST(test_every_row_has_a_label);
    RUN_TEST(test_values_are_human_readable);
    RUN_TEST(test_toggle_rows_flip_on_select);
    RUN_TEST(test_choice_rows_list_options_and_mark_the_current_one);
    RUN_TEST(test_choosing_applies_the_setting);
    RUN_TEST(test_choice_that_breaks_a_rule_is_refused_with_a_reason);
    RUN_TEST(test_brightness_steps_with_left_right_within_bounds);
    RUN_TEST(test_wifi_is_a_page);
    RUN_TEST(test_names_are_text_rows_with_their_byte_limits);
    RUN_TEST(test_pause_gnss_for_lora_is_off_by_default);
    RUN_TEST(test_gnss_and_coordinate_rows_toggle);
    return UNITY_END();
}