/*
Copyright 2014 Kai Ryu <kai1103@gmail.com>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdint.h>
#include "action.h"
#include "action_layer.h"
#include "backlight.h"
#include "softpwm_led.h"
#include "eeconfig.h"
#include "keymap_common.h"
#include "tentapad.h"
#include "debug.h"

uint8_t config_mode = 0;
static uint8_t layer = 0;
static uint8_t backlight = 0;
static uint8_t layer_modified = 0;
static uint8_t backlight_modified = 0;
extern uint8_t backlight_mode;
extern const uint8_t backlight_brightness;

void action_keyevent(keyevent_t event)
{
    uint8_t key = event.key.col;
    if (config_mode) {
        /* config mode */
        switch (key) {
            case KEY_K1:
                if (event.pressed) {
                    switch_layout();
                }
                break;
            case KEY_K2:
                if (event.pressed) {
                    switch_backlight();
                }
                break;
            case KEY_CFG:
                if (event.pressed) {
                    exit_config_mode();
                }
                break;
        }
    }
    else {
        /* normal mode */
        switch (key) {
            case KEY_K1: case KEY_K2:
                if (event.pressed) {
                    /* press */
                    switch (backlight_mode) {
                        case 0: case 6:
                            softpwm_led_on(key);
                            break;
                        case 1: case 2:
                            softpwm_led_increase(LED_KEY_SIDE - 1 + backlight_mode, 32);
                        case 3 ... 5:
                            softpwm_led_set(key, backlight_brightness);
                            break;
                    }
                }
                else {
                    /* release */
                    switch (backlight_mode) {
                        case 0: case 6:
                            softpwm_led_off(key);
                            break;
                        case 1 ... 5:
                            softpwm_led_set(key, 0);
                            break;
                    }
                }
                break;
            case KEY_TT:
                if (event.pressed) {
                    switch (backlight_mode) {
                        case 1: case 2:
                            softpwm_led_increase(LED_KEY_SIDE - 1 + backlight_mode, 32);
                            break;
                    }
                }
                break;
            case KEY_CFG:
                if (event.pressed) {
                    enter_config_mode();
                }
                break;
        }
    }
}

void enter_config_mode(void)
{
    config_mode = 1;
    layer_modified = 0;
    backlight_modified = 0;
    backlight = backlight_mode;
    backlight_level(8);
    layer_on(CONFIG_LAYER);
}

void exit_config_mode(void)
{
    config_mode = 0;
    backlight_level(backlight);
    layer_off(CONFIG_LAYER);
    if (layer_modified) {
        default_layer_set(1UL<<layer);
        eeconfig_write_default_layer(1UL<<layer);
    }
}

void switch_layout(void)
{
    if (!layer_modified) {
        layer = 0;
        layer_modified = 1;
    }
    else {
        layer = (layer + 1) % (last_layer() + 1);
    }
    xprintf("layer: %d\n", layer);
    xprintf("last layer: %d\n", last_layer());
    softpwm_led_set(0, 32 * (layer + 1));
}

void switch_backlight(void)
{
    if (!backlight_modified) {
        backlight = 0;
        backlight_modified = 1;
    }
    else {
        backlight = (backlight + 1) % (BACKLIGHT_LEVELS);
    }
    xprintf("backlight: %d\n", backlight);
    softpwm_led_set(1, 32 * (backlight + 1));
}