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/* Copyright (C) 2026 Reiner Herrmann
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include <pebble.h>
#include "config.h"
#include "metronome.h"
struct Configuration {
uint8_t version;
uint16_t bpm;
uint8_t beats;
uint8_t volume;
uint8_t beat_indicators;
} __attribute__((__packed__));
#define SETTINGS_KEY 1
#define CONFIG_VERSION 1
static struct Configuration configuration;
static void config_persist() {
persist_write_data(SETTINGS_KEY, &configuration, sizeof(configuration));
}
static void config_load_defaults() {
configuration.version = CONFIG_VERSION;
configuration.bpm = 90;
configuration.beats = 4;
configuration.volume = 50;
configuration.beat_indicators = 0xff;
}
static void config_load() {
config_load_defaults();
/* buffer remains unchanged if no data is persisted */
persist_read_data(SETTINGS_KEY, &configuration, sizeof(configuration));
if (configuration.version != CONFIG_VERSION) {
/* unknown persisted configuration format */
config_load_defaults();
}
}
static void config_inbox_received_handler(DictionaryIterator *iter, void *context) {
struct Configuration new_configuration;
memcpy(&new_configuration, &configuration, sizeof(configuration));
Tuple *bpm_tuple = dict_find(iter, MESSAGE_KEY_bpm);
if (bpm_tuple) {
int32_t bpm = bpm_tuple->value->int32;
configuration.bpm = (uint16_t) bpm;
}
Tuple *beats_tuple = dict_find(iter, MESSAGE_KEY_beats);
if (beats_tuple) {
int32_t beats = beats_tuple->value->int32;
configuration.beats = (uint8_t) beats;
}
Tuple *volume_tuple = dict_find(iter, MESSAGE_KEY_volume);
if (volume_tuple) {
int32_t volume = volume_tuple->value->int32;
configuration.volume = (uint8_t) volume;
}
const int num_beat_indicators = 3;
for (int i=0; i<num_beat_indicators; i++) {
Tuple *beat_indicator = dict_find(iter, MESSAGE_KEY_beat_indicators + i);
if (beat_indicator) {
bool val = beat_indicator->value->uint8;
/* clear bit */
configuration.beat_indicators &= ~(1 << i);
/* set value into bit */
configuration.beat_indicators |= (val << i);
}
}
if (memcmp(&new_configuration, &configuration, sizeof(configuration)) != 0) {
/* only persist if something changed */
config_persist();
update_display();
}
}
void config_init() {
config_load();
app_message_register_inbox_received(config_inbox_received_handler);
app_message_open(128, 128);
}
void config_deinit() {
app_message_deregister_callbacks();
}
uint16_t config_get_bpm() {
return configuration.bpm;
}
void config_set_bpm(uint16_t bpm) {
configuration.bpm = bpm;
config_persist();
}
uint8_t config_get_beats() {
return configuration.beats;
}
void config_set_beats(uint8_t beats) {
configuration.beats = beats;
config_persist();
}
uint8_t config_get_volume() {
return configuration.volume;
}
bool config_is_indicator_enabled(enum BeatIndicator indicator) {
return configuration.beat_indicators & (1 << indicator);
}
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