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#include "viewport_state.h"
#include <stdio.h>
#include <string.h>
#include "esp_mac.h"
#include "esp_timer.h"
#include "freertos/FreeRTOS.h"
#include "freertos/semphr.h"
static viewport_state_t s_state;
static SemaphoreHandle_t s_mutex;
// Populate viewport_name with the full base MAC, colons stripped
// (e.g. e8:f6:0a:e0:90:94 → "e8f60ae09094"). Stable across reboots,
// globally unique, and 12 alphanumeric chars — fits comfortably under
// the 32-char mDNS hostname limit with the "viewport-" prefix.
// POST /config can override it with a friendlier name.
static void seed_mac_and_name(char *mac_str, size_t mac_cap,
char *name, size_t name_cap)
{
uint8_t mac[6] = {0};
esp_read_mac(mac, ESP_MAC_BASE);
snprintf(mac_str, mac_cap, "%02x:%02x:%02x:%02x:%02x:%02x",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
snprintf(name, name_cap, "%02x%02x%02x%02x%02x%02x",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
}
void viewport_state_init(void)
{
memset(&s_state, 0, sizeof(s_state));
s_state.configured = false;
s_state.state = VIEWPORT_STATE_ASLEEP;
s_state.brightness = 80;
s_state.idle_timeout_ms = 60000;
s_state.orientation = VIEWPORT_ORIENTATION_PORTRAIT;
s_state.boot_us = (uint64_t)esp_timer_get_time();
s_state.last_frame_us = -1;
seed_mac_and_name(s_state.mac_str, sizeof(s_state.mac_str),
s_state.viewport_name, sizeof(s_state.viewport_name));
s_mutex = xSemaphoreCreateMutex();
}
viewport_state_t *viewport_state_get(void)
{
return &s_state;
}
void viewport_state_lock(void)
{
xSemaphoreTake(s_mutex, portMAX_DELAY);
}
void viewport_state_unlock(void)
{
xSemaphoreGive(s_mutex);
}
const char *viewport_state_resolution_str(void)
{
return (s_state.orientation == VIEWPORT_ORIENTATION_PORTRAIT)
? "480x800"
: "800x480";
}
void viewport_state_effective_dims(uint16_t *w, uint16_t *h)
{
viewport_state_lock();
viewport_orientation_t o = s_state.orientation;
viewport_state_unlock();
if (o == VIEWPORT_ORIENTATION_PORTRAIT) { *w = 480; *h = 800; }
else { *w = 800; *h = 480; }
}
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