#include "response_builder.h"

#include "utils/json_writer.h"
#include "utils/logger.h"

static const char* DEFAULT_ERROR_CODE = "INTERNAL_ERROR";

char *
build_response_from_error_code(const char *error_code)
{
    JsonBuilder *jbuilder;
    char *response;

    LOG_TRACE("build_response_from_error_code enter");

    if (error_code == NULL) {
        error_code = DEFAULT_ERROR_CODE;
    }

    jbuilder = json_builder_new();
    if (jbuilder == NULL) {
        LOG_ERROR("build_response_from_error_code. json_builder_new failed");
        goto error;
    }

    if (json_builder_begin_object(jbuilder) == NULL) {
        LOG_ERROR("build_response_from_error_code. json_builder_begin_object failed");
        goto error;
    }

    if (json_write_member_string(jbuilder, "error_code", error_code)) {
        goto error;
    }

    if (json_builder_end_object(jbuilder) == NULL) {
        LOG_ERROR("build_response_from_error_code. json_builder_end_object failed");
        goto error;
    }

    response = json_write_to_str(jbuilder);

    g_object_unref(jbuilder);

    LOG_TRACE("build_response_from_error_code exit");
    return response;

error:
    if (jbuilder != NULL) {
        g_object_unref(jbuilder);
    }
    LOG_ERROR("build_response_from_error_code exit with error");
    return NULL;
}

char *
build_response_from_signature(const char *signature, const char *state)
{
    JsonBuilder *jbuilder;
    char *response;

    LOG_TRACE("build_response_from_signature enter");

    jbuilder = json_builder_new();
    if (jbuilder == NULL) {
        LOG_ERROR("json_builder_new failed");
        goto error;
    }

    if (json_builder_begin_object(jbuilder) == NULL) {
        LOG_ERROR("json_builder_begin_object failed");
        goto error;
    }

    if (json_write_member_string(jbuilder, "signature", signature)) {
        goto error;
    }

    if (json_write_member_string(jbuilder, "state", state)) {
        goto error;
    }

    if (json_builder_end_object(jbuilder) == NULL) {
        LOG_ERROR("json_builder_end_object failed");
        goto error;
    }

    response = json_write_to_str(jbuilder);

    g_object_unref(jbuilder);

    LOG_TRACE("build_response_from_signature exit");
    return response;

error:
    if (jbuilder != NULL) {
        g_object_unref(jbuilder);
    }
    LOG_ERROR("build_response_from_signature exit with error");
    return NULL;
}

char *
build_response_from_signer_cert(const cert_info_t *cert_info)
{
    JsonBuilder *jbuilder;
    char *response;

    LOG_TRACE("build_response_from_signer_cert enter");

    jbuilder = json_builder_new();
    if (jbuilder == NULL) {
        LOG_ERROR("json_builder_new failed");
        goto error;
    }

    if (json_builder_begin_object(jbuilder) == NULL) {
        LOG_ERROR("json_builder_begin_object failed");
        goto error;
    }

    if (json_write_member_string(jbuilder, "signer_subject", cert_info->subject)) {
        goto error;
    }
    
    if (json_write_member_string(jbuilder, "issuer_name", cert_info->issuer)) {
        goto error;
    }

    if (json_builder_end_object(jbuilder) == NULL) {
        LOG_ERROR("json_builder_end_object failed");
        goto error;
    }

    response = json_write_to_str(jbuilder);

    g_object_unref(jbuilder);

    LOG_TRACE("build_response_from_signer_cert exit");
    return response;

error:
    if (jbuilder != NULL) {
        g_object_unref(jbuilder);
    }
    LOG_ERROR("build_response_from_signer_cert exit with error");
    return NULL;
}