#include <cJSON.h>
#include <constants.h>
#include <endpoints/api_v1_controllers.h>
#include <logger.h>
#include <models/controller.h>
#include <models/tag.h>

void
api_v1_controllers_STR_relays_GET(struct mg_connection *c, endpoint_args_t *args, struct http_message *hm)
{
    (void)hm;

    uuid_t target_uid;
    if(uuid_parse(args[0].value.v_str, target_uid))
    {
        LOG_ERROR("failed to unparse uid\n");
        mg_send_head(c, 400, 2, "Content-Type: application/json\r\n" STANDARD_HEADERS);
        mg_printf(c, "{}");
        return;
    }

    controller_t* controller = controller_get_by_uid(target_uid);

    if(!controller)
    {
        LOG_ERROR("could not find a controller for uid '%s'\n", args[0].value.v_str);
        mg_send_head(c, 404, 2, "Content-Type: application/json\r\n" STANDARD_HEADERS);
        mg_printf(c, "{}");
        return;
    }
        
    relay_t** all_relays = relay_get_by_controller_id(controller->id);

    cJSON *json = cJSON_CreateArray();

    for(int i = 0; all_relays[i] != NULL; ++i)
    {
        cJSON *json_relay = relay_to_json(all_relays[i]);

        cJSON_AddItemToArray(json, json_relay);
    }

    char *json_str = cJSON_Print(json);
    if (json_str == NULL)
    {
        LOG_ERROR("failed to print relays json\n");
        mg_send_head(c, 500, 2, "Content-Type: application/json\r\n" STANDARD_HEADERS);
        mg_printf(c, "[]");
    }
    else
    {
        mg_send_head(c, 200, strlen(json_str), "Content-Type: application/json\r\n" STANDARD_HEADERS);
        mg_printf(c, "%s", json_str);
        free(json_str);
    }
    cJSON_Delete(json);
    relay_free_list(all_relays);
    controller_free(controller);
}