#include "test_common.h"

static int test_audio_pass_through(void) {
    printf("Test: audio pass‑through (connectivity)\n");
    pid_t pid = start_looper();
    if (pid < 0) return 1;
    jack_client_t *client;
    jack_status_t status;
    client = jack_client_open("test_passthrough", JackNoStartServer, &status);
    if (client == NULL) {
        fprintf(stderr, "  SKIP: cannot open JACK client (server not running?)\n");
        kill(pid, SIGTERM);
        waitpid(pid, NULL, 0);
        return 1;
    }
    jack_port_t *output_port = jack_port_register(client, "output",
                           JACK_DEFAULT_AUDIO_TYPE,
                           JackPortIsOutput, 0);
    jack_port_t *input_port = jack_port_register(client, "input",
                           JACK_DEFAULT_AUDIO_TYPE,
                           JackPortIsInput, 0);
    if (!output_port || !input_port) {
        fprintf(stderr, "  FAIL: could not register ports\n");
        jack_client_close(client);
        kill(pid, SIGTERM);
        waitpid(pid, NULL, 0);
        return 1;
    }
    safe_usleep(200000);
    const char *looper_input = "looper:input";
    const char *looper_output = "looper:output";
    char my_output[64], my_input[64];
    snprintf(my_output, sizeof(my_output), "test_passthrough:output");
    snprintf(my_input, sizeof(my_input), "test_passthrough:input");
    if (jack_connect(client, my_output, looper_input) != 0) {
        fprintf(stderr, "  FAIL: cannot connect\n");
        jack_client_close(client);
        kill(pid, SIGTERM);
        waitpid(pid, NULL, 0);
        return 1;
    }
    if (jack_connect(client, looper_output, my_input) != 0) {
        fprintf(stderr, "  FAIL: cannot connect\n");
        jack_client_close(client);
        kill(pid, SIGTERM);
        waitpid(pid, NULL, 0);
        return 1;
    }
    passthrough_output_port = output_port;
    passthrough_input_port = input_port;
    passthrough_phase = 0.0f;
    passthrough_freq = 440.0f;
    passthrough_sample_rate = jack_get_sample_rate(client);
    passthrough_total_samples = 0;
    passthrough_sum_sq = 0.0;
    passthrough_done = 0;
    continuous_sine = 1;
    beep_remaining = 0;
    jack_set_process_callback(client, passthrough_process, NULL);
    if (jack_activate(client) != 0) {
        fprintf(stderr, "  FAIL: cannot activate client\n");
        jack_client_close(client);
        kill(pid, SIGTERM);
        waitpid(pid, NULL, 0);
        return 1;
    }
    safe_usleep(2200000);
    int saw_input = passthrough_done;
    double rms = passthrough_total_samples > 0 ?
                 sqrt(passthrough_sum_sq / passthrough_total_samples) : 0.0;
    jack_deactivate(client);
    jack_client_close(client);
    kill(pid, SIGTERM);
    waitpid(pid, NULL, 0);
    if (!saw_input) {
        fprintf(stderr, "  FAIL: looper did not produce output (no callback run?)\n");
        return 1;
    }
    if (rms < 0.001) {
        fprintf(stderr, "  FAIL: looper output RMS too small (%.6f)\n", rms);
        return 1;
    }
    printf("  PASS (RMS %.6f)\n", rms);
    return 0;
}

int test_audio(void) {
    return test_audio_pass_through();
}