/*
 * iptv-dl — IPTV Downloader
 * Config: ~/.iptv-downloader/config.json  (or $IPTV_DL_CONFIG, or --config PATH)
 * Build:  make
 */
#include "config.h"
#include "http.h"
#include "queue.h"
#include "notify.h"
#include "server.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <signal.h>
#include <curl/curl.h>

int main(int argc, char **argv) {
    const char *cfg_path = NULL;

    for (int i = 1; i < argc; i++) {
        if (!strcmp(argv[i], "--config") && i+1 < argc) cfg_path = argv[++i];
        else if (!strcmp(argv[i], "--help") || !strcmp(argv[i], "-h")) {
            fprintf(stderr,
                "Usage: %s [--config PATH] [--dump-config]\n"
                "  --config PATH   load config from PATH\n"
                "  --dump-config   print active config and exit\n"
                "Config search order:\n"
                "  --config arg → $IPTV_DL_CONFIG → ~/.iptv-downloader/config.json\n"
                "  → /etc/iptv-downloader/config.json → built-in defaults\n",
                argv[0]);
            return 0;
        } else if (!strcmp(argv[i], "--dump-config")) {
            config_load(cfg_path);
            config_dump();
            return 0;
        }
    }

    config_load(cfg_path);

    if (!http_load_templates()) {
        fprintf(stderr, "iptv-dl: failed to load templates from %s/\n", g_cfg.template_dir);
        return 1;
    }

    mkdir(g_cfg.data_dir, 0755);
    history_load();
    notify_load();
    clean_partials();

    curl_global_init(CURL_GLOBAL_ALL);
    signal(SIGPIPE, SIG_IGN);

    pthread_t worker;
    pthread_create(&worker, NULL, dl_worker, NULL);
    pthread_detach(worker);

    int srv = socket(AF_INET, SOCK_STREAM, 0);
    int opt = 1; setsockopt(srv, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
    struct sockaddr_in addr = {0};
    addr.sin_family = AF_INET;
    addr.sin_port   = htons((unsigned short)g_cfg.port);
    addr.sin_addr.s_addr = INADDR_ANY;
    if (bind(srv, (struct sockaddr*)&addr, sizeof(addr)) < 0) { perror("bind"); return 1; }
    listen(srv, BACKLOG);
    fprintf(stderr, "iptv-dl :%d (template_dir=%s data_dir=%s)\n",
            g_cfg.port, g_cfg.template_dir, g_cfg.data_dir);

    for (;;) {
        struct sockaddr_in cli; socklen_t clen = sizeof(cli);
        int cfd = accept(srv, (struct sockaddr*)&cli, &clen);
        if (cfd < 0) continue;
        int *p = malloc(sizeof(int)); *p = cfd;
        pthread_t tid; pthread_create(&tid, NULL, handle_conn, p); pthread_detach(tid);
    }
}