/* Copyright 2023 splitkb.com <support@splitkb.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 "quantum.h"

// The first four layers gets a name for readability, which is then used in the OLED below.
enum layers {
  _DEFAULT,
  _LOWER,
  _RAISE,
  _ADJUST
};

#ifdef OLED_ENABLE
// NOTE: Most of the OLED code was originally written by Soundmonster for the Corne,
// and has been copied directly from `crkbd/soundmonster/keymap.c`

oled_rotation_t oled_init_kb(oled_rotation_t rotation) {
    return OLED_ROTATION_270;
}

void render_mod_status_gui_alt(uint8_t modifiers) {
    static const char PROGMEM gui_off_1[] = {0x85, 0x86, 0};
    static const char PROGMEM gui_off_2[] = {0xa5, 0xa6, 0};
    static const char PROGMEM gui_on_1[] = {0x8d, 0x8e, 0};
    static const char PROGMEM gui_on_2[] = {0xad, 0xae, 0};

    static const char PROGMEM alt_off_1[] = {0x87, 0x88, 0};
    static const char PROGMEM alt_off_2[] = {0xa7, 0xa8, 0};
    static const char PROGMEM alt_on_1[] = {0x8f, 0x90, 0};
    static const char PROGMEM alt_on_2[] = {0xaf, 0xb0, 0};

    // fillers between the modifier icons bleed into the icon frames
    static const char PROGMEM off_off_1[] = {0xc5, 0};
    static const char PROGMEM off_off_2[] = {0xc6, 0};
    static const char PROGMEM on_off_1[] = {0xc7, 0};
    static const char PROGMEM on_off_2[] = {0xc8, 0};
    static const char PROGMEM off_on_1[] = {0xc9, 0};
    static const char PROGMEM off_on_2[] = {0xca, 0};
    static const char PROGMEM on_on_1[] = {0xcb, 0};
    static const char PROGMEM on_on_2[] = {0xcc, 0};

    if(modifiers & MOD_MASK_GUI) {
        oled_write_P(gui_on_1, false);
    } else {
        oled_write_P(gui_off_1, false);
    }

    if ((modifiers & MOD_MASK_GUI) && (modifiers & MOD_MASK_ALT)) {
        oled_write_P(on_on_1, false);
    } else if(modifiers & MOD_MASK_GUI) {
        oled_write_P(on_off_1, false);
    } else if(modifiers & MOD_MASK_ALT) {
        oled_write_P(off_on_1, false);
    } else {
        oled_write_P(off_off_1, false);
    }

    if(modifiers & MOD_MASK_ALT) {
        oled_write_P(alt_on_1, false);
    } else {
        oled_write_P(alt_off_1, false);
    }

    if(modifiers & MOD_MASK_GUI) {
        oled_write_P(gui_on_2, false);
    } else {
        oled_write_P(gui_off_2, false);
    }

    if (modifiers & MOD_MASK_GUI & MOD_MASK_ALT) {
        oled_write_P(on_on_2, false);
    } else if(modifiers & MOD_MASK_GUI) {
        oled_write_P(on_off_2, false);
    } else if(modifiers & MOD_MASK_ALT) {
        oled_write_P(off_on_2, false);
    } else {
        oled_write_P(off_off_2, false);
    }

    if(modifiers & MOD_MASK_ALT) {
        oled_write_P(alt_on_2, false);
    } else {
        oled_write_P(alt_off_2, false);
    }
}

void render_mod_status_ctrl_shift(uint8_t modifiers) {
    static const char PROGMEM ctrl_off_1[] = {0x89, 0x8a, 0};
    static const char PROGMEM ctrl_off_2[] = {0xa9, 0xaa, 0};
    static const char PROGMEM ctrl_on_1[] = {0x91, 0x92, 0};
    static const char PROGMEM ctrl_on_2[] = {0xb1, 0xb2, 0};

    static const char PROGMEM shift_off_1[] = {0x8b, 0x8c, 0};
    static const char PROGMEM shift_off_2[] = {0xab, 0xac, 0};
    static const char PROGMEM shift_on_1[] = {0xcd, 0xce, 0};
    static const char PROGMEM shift_on_2[] = {0xcf, 0xd0, 0};

    // fillers between the modifier icons bleed into the icon frames
    static const char PROGMEM off_off_1[] = {0xc5, 0};
    static const char PROGMEM off_off_2[] = {0xc6, 0};
    static const char PROGMEM on_off_1[] = {0xc7, 0};
    static const char PROGMEM on_off_2[] = {0xc8, 0};
    static const char PROGMEM off_on_1[] = {0xc9, 0};
    static const char PROGMEM off_on_2[] = {0xca, 0};
    static const char PROGMEM on_on_1[] = {0xcb, 0};
    static const char PROGMEM on_on_2[] = {0xcc, 0};

    if(modifiers & MOD_MASK_CTRL) {
        oled_write_P(ctrl_on_1, false);
    } else {
        oled_write_P(ctrl_off_1, false);
    }

    if ((modifiers & MOD_MASK_CTRL) && (modifiers & MOD_MASK_SHIFT)) {
        oled_write_P(on_on_1, false);
    } else if(modifiers & MOD_MASK_CTRL) {
        oled_write_P(on_off_1, false);
    } else if(modifiers & MOD_MASK_SHIFT) {
        oled_write_P(off_on_1, false);
    } else {
        oled_write_P(off_off_1, false);
    }

    if(modifiers & MOD_MASK_SHIFT) {
        oled_write_P(shift_on_1, false);
    } else {
        oled_write_P(shift_off_1, false);
    }

    if(modifiers & MOD_MASK_CTRL) {
        oled_write_P(ctrl_on_2, false);
    } else {
        oled_write_P(ctrl_off_2, false);
    }

    if (modifiers & MOD_MASK_CTRL & MOD_MASK_SHIFT) {
        oled_write_P(on_on_2, false);
    } else if(modifiers & MOD_MASK_CTRL) {
        oled_write_P(on_off_2, false);
    } else if(modifiers & MOD_MASK_SHIFT) {
        oled_write_P(off_on_2, false);
    } else {
        oled_write_P(off_off_2, false);
    }

    if(modifiers & MOD_MASK_SHIFT) {
        oled_write_P(shift_on_2, false);
    } else {
        oled_write_P(shift_off_2, false);
    }
}

void render_logo(void) {
    static const char PROGMEM aurora_logo[] = {
        0x00, 0x00, 0x00, 0xe0, 0x00, 0xf8, 0xc0, 0xf8, 0xe0, 0xc0, 0xfc, 0x00, 0x7e, 0x18, 0x00, 0x80, 
        0x00, 0x02, 0x80, 0xf0, 0x00, 0xc0, 0x80, 0xf8, 0xc0, 0xe0, 0x70, 0x60, 0x3c, 0x38, 0x3c, 0x1c, 
        0x00, 0x3f, 0x0c, 0x0f, 0x1f, 0x03, 0x07, 0x01, 0xc3, 0x00, 0xe0, 0x80, 0x00, 0xe0, 0x80, 0xf8, 
        0x80, 0xc0, 0xf7, 0xc7, 0x6f, 0x7b, 0x39, 0x30, 0x00, 0x80, 0x00, 0xc0, 0x00, 0xc0, 0xc2, 0xe0, 
        0x00, 0x40, 0x38, 0x30, 0x38, 0x1e, 0x18, 0x1e, 0x0f, 0x0c, 0x07, 0x07, 0x07, 0x03, 0x03, 0x21, 
        0x21, 0x31, 0x30, 0x18, 0x18, 0x1c, 0x08, 0x0c, 0x0e, 0x07, 0x06, 0x07, 0x03, 0xc3, 0x03, 0x01, 
        0x4c, 0xcc, 0xc2, 0xc2, 0x41, 0x49, 0x09, 0x2b, 0x2a, 0x6a, 0x6e, 0x24, 0x24, 0x04, 0x92, 0x92, 
        0xb1, 0xf1, 0xf1, 0xf2, 0xe6, 0xa4, 0xa4, 0x04, 0x04, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28
    };
    oled_write_raw_P(aurora_logo, sizeof(aurora_logo));
    oled_set_cursor(0, 4);
}

void render_logo_text(void) {
    oled_write_P(PSTR("helix"), false);
}

void render_kb_LED_state(void) {
    // Host Keyboard LED Status
    led_t led_state = host_keyboard_led_state();
    oled_write_P(led_state.num_lock ? PSTR("N ") : PSTR("  "), false);
    oled_write_P(led_state.caps_lock ? PSTR("C ") : PSTR("  "), false);
    oled_write_P(led_state.scroll_lock ? PSTR("S ") : PSTR("  "), false);
}

void render_layer_state(void) {
    static const char PROGMEM default_layer[] = {
        0x20, 0x94, 0x95, 0x96, 0x20,
        0x20, 0xb4, 0xb5, 0xb6, 0x20,
        0x20, 0xd4, 0xd5, 0xd6, 0x20, 0};
    static const char PROGMEM raise_layer[] = {
        0x20, 0x97, 0x98, 0x99, 0x20,
        0x20, 0xb7, 0xb8, 0xb9, 0x20,
        0x20, 0xd7, 0xd8, 0xd9, 0x20, 0};
    static const char PROGMEM lower_layer[] = {
        0x20, 0x9a, 0x9b, 0x9c, 0x20,
        0x20, 0xba, 0xbb, 0xbc, 0x20,
        0x20, 0xda, 0xdb, 0xdc, 0x20, 0};
    static const char PROGMEM adjust_layer[] = {
        0x20, 0x9d, 0x9e, 0x9f, 0x20,
        0x20, 0xbd, 0xbe, 0xbf, 0x20,
        0x20, 0xdd, 0xde, 0xdf, 0x20, 0};
    if(layer_state_is(_LOWER)) {
        oled_write_P(lower_layer, false);
    } else if(layer_state_is(_RAISE)) {
        oled_write_P(raise_layer, false);
    } else if(layer_state_is(_DEFAULT)) {
        oled_write_P(default_layer, false);
    } else {
        oled_write_P(adjust_layer, false);
    }
}


bool oled_task_kb(void) {
    if (!oled_task_user()) {
        return false;
    }
    if (is_keyboard_master()) {
        // Renders the current keyboard state (layers and mods)
        render_logo();
        render_logo_text();
        oled_advance_page(false);
        render_layer_state();
        oled_advance_page(false);
        render_mod_status_gui_alt(get_mods()|get_oneshot_mods());
        render_mod_status_ctrl_shift(get_mods()|get_oneshot_mods());
        render_kb_LED_state();
    } else {
        // clang-format off
        static const char PROGMEM aurora_art[] = {
            0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x1c, 0x08, 0x00, 0x00, 
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 
            0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x40, 
            0xe0, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x80, 0xc0, 0x80, 
            0xc0, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x00, 0x80, 0x00, 0xf0, 0x00, 0x00, 0xc0, 
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 
            0x81, 0x00, 0xc0, 0x00, 0xfe, 0x00, 0xfc, 0x00, 0xff, 0x20, 0xff, 0xf0, 0x0f, 0xf0, 0x00, 0xff, 
            0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90, 0x00, 0xf8, 0x00, 0x00, 0xf8, 
            0xff, 0x10, 0xff, 0x84, 0xff, 0x60, 0xff, 0x36, 0xff, 0x0f, 0xff, 0x3f, 0x00, 0x5f, 0x00, 0x05, 
            0x80, 0x00, 0x80, 0x00, 0xc0, 0x38, 0x00, 0xec, 0xf0, 0x00, 0xfb, 0x80, 0xff, 0xf0, 0xff, 0xef, 
            0xff, 0xe8, 0xff, 0x03, 0xff, 0x0c, 0xff, 0x00, 0xff, 0x00, 0x03, 0x00, 0x00, 0xf8, 0x00, 0x80, 
            0xff, 0x20, 0xff, 0xd0, 0xff, 0xe0, 0xfe, 0xf8, 0xff, 0xfc, 0xff, 0xff, 0x0f, 0xff, 0x01, 0x3f, 
            0xff, 0x00, 0x0f, 0x00, 0x01, 0x00, 0x03, 0x00, 0xfe, 0x80, 0xfe, 0x00, 0xc0, 0xff, 0xc4, 0xfb, 
            0xff, 0xfe, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0x07, 0xff, 0x03, 0x3f, 0x00, 0x0f, 0xc0, 0x00, 
            0x00, 0x00, 0xb8, 0x00, 0xff, 0x40, 0xbe, 0xf0, 0xff, 0xf1, 0xff, 0xfe, 0xff, 0xff, 0xff, 0xff, 
            0x1f, 0xff, 0x67, 0x00, 0xef, 0x00, 0x1f, 0x00, 0x00, 0x07, 0x00, 0x00, 0xe0, 0x00, 0xff, 0xf0, 
            0xff, 0x88, 0xff, 0xc4, 0xff, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8f, 0x7f, 0x0f, 0xff, 
            0x00, 0x07, 0xfe, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x00, 0xc0, 0x3f, 0xf8, 0xe7, 0xff, 
            0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0x1f, 0x3f, 0x01, 0xff, 0x0b, 0x00, 0xff, 0x00, 0x00, 0x05, 
            0x00, 0x00, 0x00, 0xe0, 0x00, 0xf8, 0x60, 0x80, 0xfe, 0xe3, 0xfc, 0xff, 0x1e, 0xff, 0xff, 0x23, 
            0xff, 0x09, 0xff, 0x20, 0x00, 0x3f, 0x02, 0x00, 0x00, 0x0f, 0x00, 0x40, 0x00, 0xc0, 0x00, 0xfc, 
            0xe0, 0xfc, 0xf0, 0xff, 0xff, 0x7f, 0xfc, 0xff, 0x0f, 0xff, 0x07, 0x1f, 0x00, 0x01, 0x0f, 0x00, 
            0x0f, 0x00, 0x81, 0x70, 0x0c, 0xf0, 0x80, 0x00, 0x00, 0xe4, 0xf8, 0xe6, 0x70, 0x3f, 0xcf, 0xff, 
            0x1f, 0xff, 0x48, 0xff, 0x0f, 0x00, 0x07, 0x00, 0x00, 0x43, 0x60, 0xf8, 0xf0, 0xfe, 0x38, 0xfe, 
            0x00, 0xfc, 0x03, 0x00, 0xc8, 0x72, 0xcf, 0xfc, 0x00, 0x03, 0x0f, 0x01, 0xe0, 0x1c, 0xe0, 0x03, 
            0x00, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x06, 0xf9, 0x00, 0x03, 0x00, 0x07, 
            0xff, 0x00, 0x10, 0x12, 0xc9, 0xf0, 0xcf, 0xb4, 0x7f, 0x80, 0xe0, 0x1e, 0x01, 0x40, 0x65, 0x5e, 
            0xe0, 0x00, 0x00, 0xf0, 0x0c, 0xf0, 0x00, 0x80, 0x7e, 0x01, 0x80, 0x93, 0xfc, 0xc0, 0x00, 0x00, 
            0x00, 0x00, 0x00, 0x00, 0x89, 0x18, 0x2c, 0x46, 0x00, 0x07, 0x21, 0x10, 0x10, 0x80, 0x09, 0x13, 
            0x31, 0xbf, 0xff, 0x00, 0x08, 0x1a, 0xf7, 0x0f, 0x00, 0x00, 0x44, 0x45, 0x34, 0xbf, 0xb8, 0x00, 
            0x10, 0xf0, 0x08, 0xf4, 0x18, 0x11, 0xfc, 0x18, 0xfb, 0x0e, 0x10, 0xf8, 0x04, 0xf8, 0x10, 0x20, 
            0x18, 0x09, 0xff, 0x0c, 0xea, 0x1f, 0x28, 0x60, 0x30, 0xf8, 0x20, 0xc0, 0x42, 0x33, 0x21, 0x00
        };
        // clang-format on
        oled_write_raw_P(aurora_art, sizeof(aurora_art));
    }
    return false;
}
#endif

#ifdef ENCODER_ENABLE
bool encoder_update_kb(uint8_t index, bool clockwise) {
    if (!encoder_update_user(index, clockwise)) {
        return false;
    }
    // 0 is left-half encoder,
    // 1 is right-half encoder
    if (index == 0) {
        // Volume control
        if (clockwise) {
            tap_code(KC_VOLU);
        } else {
            tap_code(KC_VOLD);
        }
    } else if (index == 1) {
        // Page up/Page down
        if (clockwise) {
            tap_code(KC_PGDN);
        } else {
            tap_code(KC_PGUP);
        }
    }
    return true;
}
#endif