/*
 * chat_setting.c — chat-related settings: validation, storage, on-the-fly apply
 *
 * Используется и из парсера конфига (headless), и из GUI (через bridge).
 * Никаких зависимостей от g_cc или instance — работает автономно.
 */

#include "chat_setting.h"
#include "../../lib/debug_config.h"

#ifdef DEBUG_CATEGORY_CHAT_SYNC
#define CS_ID DEBUG_CATEGORY_CHAT_SYNC
#else
#define CS_ID DEBUG_CATEGORY_GENERAL
#endif

#include <string.h>
#include <stdio.h>
#include <stdlib.h>

/* ─── типы настроек ─── */

#define CHAT_SETTING_INT  0
#define CHAT_SETTING_BOOL 1

struct chat_setting_def {
    const char* name;
    int         type;
    int         default_val;
    int         min_val;
    int         max_val;
};

/* ─── реестр всех известных настроек ─── */

static const struct chat_setting_def g_setting_defs[] = {
    {"storage_autoload",            CHAT_SETTING_BOOL, 1,   0, 1},
    {"opus_codec_preset",           CHAT_SETTING_INT,  1,   0, 4},
    {"compressor_enabled",          CHAT_SETTING_BOOL, 0,   0, 1},
    {"compressor_max_gain_db",      CHAT_SETTING_INT,  25,  1, 100},
    {"compressor_rise_rate",        CHAT_SETTING_INT,  10,  1, 100},
    {"media_download_max_peers",    CHAT_SETTING_INT,  3,   1, 16},
    {"join_policy",                CHAT_SETTING_INT,  1,   0, 2},  /* 0=autojoin, 1=ask, 2=deny */
};

#define CHAT_SETTING_COUNT (sizeof(g_setting_defs) / sizeof(g_setting_defs[0]))

/* ─── состояние (текущие значения) ─── */

static int g_chat_values[CHAT_SETTING_COUNT];
static int g_chat_initialized = 0;

static void chat_setting_reset_defaults(void) {
    for (size_t i = 0; i < CHAT_SETTING_COUNT; i++)
        g_chat_values[i] = g_setting_defs[i].default_val;
    g_chat_initialized = 1;
}

/* ─── поиск ─── */

static int chat_setting_find(const char* name) {
    for (size_t i = 0; i < CHAT_SETTING_COUNT; i++)
        if (strcmp(g_setting_defs[i].name, name) == 0) return (int)i;
    return -1;
}

/* ─── apply: вызов специфичного для настройки кода ─── */

static void chat_setting_apply(void) {
    /* будет заполняться по мере появления runtime-setter'ов в модулях:
       if (idx == ...) some_module_set_xxx(value); */
}

/* ─── public API ─── */

int chat_setting_set(const char* name, const char* value) {
    if (!name || !value || !*name || !*value) return -2;

    if (!g_chat_initialized) chat_setting_reset_defaults();

    int idx = chat_setting_find(name);
    if (idx < 0) {
        DEBUG_ERROR(CS_ID, "chat_setting: unknown setting '%s'", name);
        return -1;
    }

    const struct chat_setting_def* def = &g_setting_defs[idx];
    int v;

    if (def->type == CHAT_SETTING_BOOL) {
        if (strcmp(value, "0") == 0 || strcmp(value, "no") == 0 || strcmp(value, "false") == 0) v = 0;
        else if (strcmp(value, "1") == 0 || strcmp(value, "yes") == 0 || strcmp(value, "true") == 0) v = 1;
        else { DEBUG_ERROR(CS_ID, "chat_setting: '%s' invalid bool '%s' (expect 0/1)", name, value); return -2; }
    } else {
        char* end = NULL;
        long lv = strtol(value, &end, 10);
        if (!end || *end != '\0' || lv < def->min_val || lv > def->max_val) {
            DEBUG_ERROR(CS_ID, "chat_setting: '%s' invalid int '%s' (range %d..%d)", name, value, def->min_val, def->max_val);
            return -2;
        }
        v = (int)lv;
    }

    if (g_chat_values[idx] == v) return 0;

    g_chat_values[idx] = v;
    DEBUG_INFO(CS_ID, "chat_setting: %s = %s", name, value);
    chat_setting_apply();
    return 0;
}

const char* chat_setting_get(const char* name) {
    if (!g_chat_initialized) chat_setting_reset_defaults();
    int idx = chat_setting_find(name);
    if (idx < 0) return NULL;

    static char buf[16];
    snprintf(buf, sizeof(buf), "%d", g_chat_values[idx]);
    return buf;
}

int chat_setting_get_int(const char* name, int def) {
    if (!g_chat_initialized) chat_setting_reset_defaults();
    int idx = chat_setting_find(name);
    return idx >= 0 ? g_chat_values[idx] : def;
}