/* Copyright 2021 Stefan Kerkmann
 *
 * 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 "config.h"
#include "keyboard_report_util.hpp"
#include "keycode.h"
#include "test_common.hpp"
#include "action_tapping.h"
#include "test_fixture.hpp"
#include "test_keymap_key.hpp"

using testing::_;
using testing::InSequence;

class QuickTap : public TestFixture {};

TEST_F(QuickTap, tap_regular_key_while_mod_tap_key_is_held) {
    TestDriver driver;
    InSequence s;
    auto       mod_tap_key = KeymapKey(0, 1, 0, SFT_T(KC_P));
    auto       regular_key = KeymapKey(0, 2, 0, KC_A);

    set_keymap({mod_tap_key, regular_key});

    /* Press mod-tap key. */
    EXPECT_NO_REPORT(driver);
    mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Press regular key. */
    EXPECT_NO_REPORT(driver);
    regular_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release regular key. */
    EXPECT_NO_REPORT(driver);
    regular_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release mod-tap key. */
    EXPECT_REPORT(driver, (KC_LSFT));
    mod_tap_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Idle for tapping term of mod tap hold key. */
    EXPECT_REPORT(driver, (KC_LSFT, KC_A));
    EXPECT_REPORT(driver, (KC_LSFT));
    EXPECT_EMPTY_REPORT(driver);
    idle_for(TAPPING_TERM - 3);
    VERIFY_AND_CLEAR(driver);
}

TEST_F(QuickTap, tap_mod_tap_key_while_mod_tap_key_is_held) {
    TestDriver driver;
    InSequence s;
    auto       first_mod_tap_key  = KeymapKey(0, 1, 0, SFT_T(KC_P));
    auto       second_mod_tap_key = KeymapKey(0, 2, 0, RSFT_T(KC_A));

    set_keymap({first_mod_tap_key, second_mod_tap_key});

    /* Press first mod-tap key */
    EXPECT_NO_REPORT(driver);
    first_mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Press second mod-tap key */
    EXPECT_NO_REPORT(driver);
    second_mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release second tap-hold key */
    EXPECT_NO_REPORT(driver);
    second_mod_tap_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release first mod-tap key */
    EXPECT_REPORT(driver, (KC_LSFT));
    first_mod_tap_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Idle for tapping term of first mod-tap key. */
    EXPECT_REPORT(driver, (KC_LSFT, KC_A));
    EXPECT_REPORT(driver, (KC_LSFT));
    EXPECT_EMPTY_REPORT(driver);
    idle_for(TAPPING_TERM - 3);
    VERIFY_AND_CLEAR(driver);
}

TEST_F(QuickTap, tap_regular_key_while_layer_tap_key_is_held) {
    TestDriver driver;
    InSequence s;
    auto       layer_tap_key = KeymapKey(0, 1, 0, LT(1, KC_P));
    auto       regular_key   = KeymapKey(0, 2, 0, KC_A);
    auto       layer_key     = KeymapKey(1, 2, 0, KC_B);

    set_keymap({layer_tap_key, regular_key, layer_key});

    /* Press layer-tap key */
    EXPECT_NO_REPORT(driver);
    layer_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Press regular key */
    EXPECT_NO_REPORT(driver);
    regular_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release regular key */
    EXPECT_NO_REPORT(driver);
    regular_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release layer-tap key */
    EXPECT_REPORT(driver, (KC_P));
    EXPECT_REPORT(driver, (KC_A, KC_P));
    EXPECT_REPORT(driver, (KC_P));
    EXPECT_EMPTY_REPORT(driver);
    layer_tap_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);
}

TEST_F(QuickTap, tap_key_and_tap_again_before_quick_tap_term) {
    TestDriver driver;
    InSequence s;
    auto       mod_tap_key = KeymapKey(0, 1, 0, SFT_T(KC_P));

    set_keymap({mod_tap_key});

    /* Press mod-tap key. */
    EXPECT_NO_REPORT(driver);
    mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release mod-tap key. */
    EXPECT_REPORT(driver, (KC_P));
    EXPECT_EMPTY_REPORT(driver);
    mod_tap_key.release();
    idle_for(QUICK_TAP_TERM - 10);
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Press and tap mod-tap key again. */
    EXPECT_REPORT(driver, (KC_P));
    mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release mod-tap key. */
    EXPECT_EMPTY_REPORT(driver);
    mod_tap_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);
}

TEST_F(QuickTap, tap_key_and_hold_again_before_quick_tap_term) {
    TestDriver driver;
    InSequence s;
    auto       mod_tap_key = KeymapKey(0, 1, 0, SFT_T(KC_P));

    set_keymap({mod_tap_key});

    /* Press mod-tap key. */
    EXPECT_NO_REPORT(driver);
    mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release mod-tap key. */
    EXPECT_REPORT(driver, (KC_P));
    EXPECT_EMPTY_REPORT(driver);
    mod_tap_key.release();
    idle_for(QUICK_TAP_TERM - 10);
    VERIFY_AND_CLEAR(driver);

    /* Press and hold mod-tap key again. */
    EXPECT_REPORT(driver, (KC_P));
    mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Wait until tapping term expired */
    EXPECT_NO_REPORT(driver);
    idle_for(TAPPING_TERM);
    VERIFY_AND_CLEAR(driver);

    /* Release mod-tap key. */
    EXPECT_EMPTY_REPORT(driver);
    mod_tap_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);
}

TEST_F(QuickTap, tap_key_and_tap_again_after_quick_tap_term) {
    TestDriver driver;
    InSequence s;
    auto       mod_tap_key = KeymapKey(0, 1, 0, SFT_T(KC_P));

    set_keymap({mod_tap_key});

    /* Press mod-tap key. */
    EXPECT_NO_REPORT(driver);
    mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release mod-tap key. */
    EXPECT_REPORT(driver, (KC_P));
    EXPECT_EMPTY_REPORT(driver);
    mod_tap_key.release();
    idle_for(QUICK_TAP_TERM + 10);
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Press mod-tap key again. */
    EXPECT_NO_REPORT(driver);
    mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release mod-tap key. */
    EXPECT_REPORT(driver, (KC_P));
    EXPECT_EMPTY_REPORT(driver);
    mod_tap_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);
}

TEST_F(QuickTap, tap_key_and_hold_again_after_quick_tap_term) {
    TestDriver driver;
    InSequence s;
    auto       mod_tap_key = KeymapKey(0, 1, 0, SFT_T(KC_P));

    set_keymap({mod_tap_key});

    /* Press mod-tap key. */
    EXPECT_NO_REPORT(driver);
    mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Release mod-tap key. */
    EXPECT_REPORT(driver, (KC_P));
    EXPECT_EMPTY_REPORT(driver);
    mod_tap_key.release();
    idle_for(QUICK_TAP_TERM + 10);
    VERIFY_AND_CLEAR(driver);

    /* Press and hold mod-tap key again. */
    EXPECT_NO_REPORT(driver);
    mod_tap_key.press();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);

    /* Wait until tapping term expired */
    EXPECT_REPORT(driver, (KC_LSFT));
    idle_for(TAPPING_TERM);
    VERIFY_AND_CLEAR(driver);

    /* Release mod-tap key. */
    EXPECT_EMPTY_REPORT(driver);
    mod_tap_key.release();
    run_one_scan_loop();
    VERIFY_AND_CLEAR(driver);
}