#include "font_runtime.h"

#include "esp_log.h"

/* 如果工程未在 lv_conf 或编译参数里定义，则默认开启运行时 binfont。 */
#ifndef LV_USE_BINFONT
#define LV_USE_BINFONT 1
#endif

#if LV_USE_BINFONT
#include "font/binfont_loader/lv_binfont_loader.h"
#endif

typedef struct {
    const char *tag;
    const char *path;
    lv_font_t *runtime_font;
} runtime_font_slot_t;

static const char *TAG = "font_runtime";
static bool s_font_inited = false;
#if !LV_USE_BINFONT
static bool s_feature_logged = false;
#endif

static runtime_font_slot_t s_misans_25 = {
    .tag = "MiSans_25",
    .path = "/extflash/fonts/MiSans_VF_25.bin",
    .runtime_font = NULL,
};
static runtime_font_slot_t s_misans_30 = {
    .tag = "MiSans_30",
    .path = "/extflash/fonts/MiSans_VF_30.bin",
    .runtime_font = NULL,
};
static runtime_font_slot_t s_misans_40 = {
    .tag = "MiSans_40",
    .path = "/extflash/fonts/MiSans_VF_40.bin",
    .runtime_font = NULL,
};
static runtime_font_slot_t s_misans_60 = {
    .tag = "MiSans_60",
    .path = "/extflash/fonts/MiSans_VF_60.bin",
    .runtime_font = NULL,
};
static runtime_font_slot_t s_misans_100 = {
    .tag = "MiSans_100",
    .path = "/extflash/fonts/MiSans_VF_100.bin",
    .runtime_font = NULL,
};
static runtime_font_slot_t s_misans_180 = {
    .tag = "MiSans_180",
    .path = "/extflash/fonts/MiSans_VF_180.bin",
    .runtime_font = NULL,
};
static runtime_font_slot_t s_icon_25 = {
    .tag = "Icon_25",
    .path = "/extflash/fonts/iconfont_25.bin",
    .runtime_font = NULL,
};

static void load_one_font(runtime_font_slot_t *slot)
{
    if (slot == NULL || slot->runtime_font != NULL) {
        return;
    }

#if LV_USE_BINFONT
    slot->runtime_font = lv_binfont_create(slot->path);
    if (slot->runtime_font == NULL) {
        ESP_LOGW(TAG, "load failed: %s (%s), fallback to built-in", slot->tag, slot->path);
        return;
    }
    ESP_LOGI(TAG, "load ok: %s (%s)", slot->tag, slot->path);
#else
    LV_UNUSED(slot);
    if (!s_feature_logged) {
        ESP_LOGI(TAG, "LV_USE_BINFONT=0, keep built-in fonts");
        s_feature_logged = true;
    }
#endif
}

void ui_font_runtime_init(void)
{
    if (s_font_inited) {
        return;
    }
    s_font_inited = true;

    load_one_font(&s_misans_25);
    load_one_font(&s_misans_30);
    load_one_font(&s_misans_40);
    load_one_font(&s_misans_60);
    load_one_font(&s_misans_100);
    load_one_font(&s_misans_180);
    load_one_font(&s_icon_25);
}

void ui_font_runtime_deinit(void)
{
#if LV_USE_BINFONT
    runtime_font_slot_t *slots[] = {
        &s_misans_25, &s_misans_30, &s_misans_40,
        &s_misans_60, &s_misans_100, &s_misans_180, &s_icon_25,
    };
    size_t i = 0;
    for (i = 0; i < sizeof(slots) / sizeof(slots[0]); ++i) {
        if (slots[i]->runtime_font != NULL) {
            lv_binfont_destroy(slots[i]->runtime_font);
            slots[i]->runtime_font = NULL;
        }
    }
#endif
    s_font_inited = false;
}

const lv_font_t *ui_font_misans_25(void)
{
    if (s_misans_25.runtime_font != NULL) return s_misans_25.runtime_font;
    return LV_FONT_DEFAULT;
}

const lv_font_t *ui_font_misans_30(void)
{
    if (s_misans_30.runtime_font != NULL) return s_misans_30.runtime_font;
    return LV_FONT_DEFAULT;
}

const lv_font_t *ui_font_misans_40(void)
{
    if (s_misans_40.runtime_font != NULL) return s_misans_40.runtime_font;
    return LV_FONT_DEFAULT;
}

const lv_font_t *ui_font_misans_60(void)
{
    if (s_misans_60.runtime_font != NULL) return s_misans_60.runtime_font;
    return LV_FONT_DEFAULT;
}

const lv_font_t *ui_font_misans_100(void)
{
    if (s_misans_100.runtime_font != NULL) return s_misans_100.runtime_font;
    return LV_FONT_DEFAULT;
}

const lv_font_t *ui_font_misans_180(void)
{
    if (s_misans_180.runtime_font != NULL) return s_misans_180.runtime_font;
    return LV_FONT_DEFAULT;
}

const lv_font_t *ui_font_icon_25(void)
{
    if (s_icon_25.runtime_font != NULL) return s_icon_25.runtime_font;
    return LV_FONT_DEFAULT;
}