// Runtime config loader: applies an optional on-device cfg over the baked-in
// defaults. The cfg format is "Key = Value", one per line, '#' comments and
// [section] headers ignored -- the same keys DorkNet.ClientMod uses on PC, so a
// PC config reads here too.
#include "config.h"

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

extern "C" int __android_log_print(int prio, const char *tag, const char *fmt, ...);
#define CLOGI(...) __android_log_print(4, "DORKNET", __VA_ARGS__)

static void trim(char *s) {
    char *p = s;
    while (*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n') p++;
    if (p != s) memmove(s, p, strlen(p) + 1);
    size_t n = strlen(s);
    while (n && (s[n - 1] == ' ' || s[n - 1] == '\t' || s[n - 1] == '\r' || s[n - 1] == '\n'))
        s[--n] = '\0';
}

static bool as_bool(const char *v, bool dflt) {
    if (!v || !*v) return dflt;
    if (!strcasecmp(v, "true") || !strcasecmp(v, "1") || !strcasecmp(v, "yes") || !strcasecmp(v, "on"))
        return true;
    if (!strcasecmp(v, "false") || !strcasecmp(v, "0") || !strcasecmp(v, "no") || !strcasecmp(v, "off"))
        return false;
    return dflt;
}

// Accept a bare host or a full URL; store just the host.
static void set_host(char *out, size_t cap, const char *val) {
    const char *scheme = strstr(val, "://");
    const char *host = scheme ? scheme + 3 : val;
    size_t i = 0;
    for (; host[i] && host[i] != '/' && i + 1 < cap; i++) out[i] = host[i];
    out[i] = '\0';
}

void dn_load_runtime_config(char *server_host, size_t server_host_cap,
                            char *oculus_appid, size_t oculus_appid_cap,
                            char *photon_realtime, char *photon_voice, char *photon_chat,
                            char *photon_server, size_t photon_server_cap, int *photon_port,
                            char *photon_region, size_t photon_region_cap,
                            bool *tls_bypass, bool *accept_images,
                            bool *log_http, bool *debug_http, int *body_max) {
    char path[256];
    snprintf(path, sizeof(path), "/sdcard/Android/data/%s/files/%s", DN_PACKAGE, DN_RUNTIME_CFG_NAME);
    FILE *f = fopen(path, "r");
    if (!f) { CLOGI("no runtime config at %s; using baked-in defaults", path); return; }
    char line[256];
    while (fgets(line, sizeof(line), f)) {
        char *hash = strchr(line, '#');
        if (hash) *hash = '\0';
        char *eq = strchr(line, '=');
        if (!eq) continue;
        *eq = '\0';
        char *key = line, *val = eq + 1;
        trim(key);
        trim(val);
        if (!strcasecmp(key, "ServerHost") && *val) set_host(server_host, server_host_cap, val);
        else if (!strcasecmp(key, "OculusAppId")) {
            oculus_appid[0] = '\0';
            strncpy(oculus_appid, val, oculus_appid_cap - 1);
        }
        else if (!strcasecmp(key, "PhotonAppId") && *val) strncpy(photon_realtime, val, 63);
        else if (!strcasecmp(key, "PhotonVoiceAppId") && *val) strncpy(photon_voice, val, 63);
        else if (!strcasecmp(key, "PhotonChatAppId") && *val) strncpy(photon_chat, val, 63);
        else if (!strcasecmp(key, "PhotonNameServer")) set_host(photon_server, photon_server_cap, val);
        else if (!strcasecmp(key, "PhotonNameServerPort")) *photon_port = atoi(val);
        else if (!strcasecmp(key, "PhotonRegion") && *val) { photon_region[0] = ' '; strncpy(photon_region, val, photon_region_cap - 1); }
        else if (!strcasecmp(key, "EnableTlsTrustBypass")) *tls_bypass = as_bool(val, *tls_bypass);
        else if (!strcasecmp(key, "AcceptUnsignedImages")) *accept_images = as_bool(val, *accept_images);
        else if (!strcasecmp(key, "LogHttp")) *log_http = as_bool(val, *log_http);
        else if (!strcasecmp(key, "Debug")) *debug_http = as_bool(val, *debug_http);
        else if (!strcasecmp(key, "LogHttpBodyMax") && *val) *body_max = atoi(val);
    }
    fclose(f);
    CLOGI("runtime config applied from %s", path);
}