#include "dowa/dowa.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static const char *Get_String(Dowa_JSON_Entry *object, const char *key)
{
  char *value = Dowa_JSON_Get_String(object, key);
  return value ? value : "";
}

int main(void)
{
  printf(
      "{\"type\":\"ready\",\"request_id\":null,"
      "\"conversation_id\":null,\"status\":\"ok\"}\n");
  fflush(stdout);

  char *line = NULL;
  size_t capacity = 0;
  while (getline(&line, &capacity, stdin) >= 0)
  {
    Dowa_Arena *p_arena = Dowa_Arena_Create(64 * 1024);
    Dowa_JSON_Value parsed = Dowa_JSON_Parse(
        line, (int32)strlen(line), p_arena);
    if (parsed.type != DOWA_JSON_OBJECT)
    {
      Dowa_Arena_Free(p_arena);
      continue;
    }
    Dowa_JSON_Entry *object = parsed.object_val;
    const char *command = Get_String(object, "command");
    const char *request_id = Get_String(object, "request_id");
    const char *conversation_id = Get_String(object, "conversation_id");
    if (strcmp(command, "shutdown") == 0)
    {
      printf(
          "{\"type\":\"turn.done\",\"request_id\":\"%s\","
          "\"conversation_id\":\"\"}\n",
          request_id);
      fflush(stdout);
      Dowa_Arena_Free(p_arena);
      break;
    }
    if (strcmp(command, "turn.start") == 0)
    {
      printf(
          "{\"type\":\"turn.accepted\",\"request_id\":\"%s\","
          "\"conversation_id\":\"%s\"}\n",
          request_id,
          conversation_id);
      printf(
          "{\"type\":\"assistant.delta\",\"request_id\":\"%s\","
          "\"conversation_id\":\"%s\","
          "\"delta\":\"hello \\\"traveler\\\"\\\\path\"}\n",
          request_id,
          conversation_id);
      printf(
          "{\"type\":\"assistant.completed\",\"request_id\":\"%s\","
          "\"conversation_id\":\"%s\","
          "\"content\":\"hello traveler\"}\n",
          request_id,
          conversation_id);
      printf(
          "{\"type\":\"assistant.usage\",\"request_id\":\"%s\","
          "\"conversation_id\":\"%s\","
          "\"usage\":{\"input_tokens\":7,\"output_tokens\":3}}\n",
          request_id,
          conversation_id);
      printf(
          "{\"type\":\"turn.done\",\"request_id\":\"%s\","
          "\"conversation_id\":\"%s\"}\n",
          request_id,
          conversation_id);
      fflush(stdout);
    }
    Dowa_Arena_Free(p_arena);
  }
  free(line);
  return 0;
}