#include "pthread.h"
#include "sql.h"
#include "sqlite.h"

User *sqlite_insert_user(const char *username, const char *email,
                         const char *password, const char *group,
                         const bool *is_superuser) {
  pthread_mutex_lock(&db_mutex);
  if (!db) {
    fprintf(stderr, "Databse not initialized\n");
    pthread_mutex_unlock(&db_mutex);
    return nullptr;
  }
  if (!username || !email || !password) {
    fprintf(stderr, "username, email, password connot be empty\n");
    pthread_mutex_unlock(&db_mutex);
    return nullptr;
  }
  const char *sql = nullptr;
  sqlite3_stmt *stmt;
  int rc;
  if (!group || !is_superuser) {
    sql = INSERT_USER_USERNAME_EMAIL_PASSWORD_SQL;
  } else if (!group) {
    sql = INSERT_USER_USERNAME_EMAIL_PASSWORD_GROUP_SQL;
  } else {
    sql = INSERT_USER_FULL_SQL;
  }
  rc = sqlite3_prepare_v2(db, sql, -1, &stmt, 0);
  if (rc != SQLITE_OK) {
    fprintf(stderr, "Cannot prepare statement: %s\n", sqlite3_errmsg(db));
    pthread_mutex_unlock(&db_mutex);
    return nullptr;
  }

  sqlite3_bind_text(stmt, 1, username, -1, SQLITE_STATIC);
  sqlite3_bind_text(stmt, 2, email, -1, SQLITE_STATIC);
  sqlite3_bind_text(stmt, 3, password, -1, SQLITE_STATIC);

  if (group) {
    sqlite3_bind_text(stmt, 4, group, -1, SQLITE_STATIC);
  }
  if (is_superuser) {
    sqlite3_bind_int(stmt, 5, *is_superuser);
  }

  rc = sqlite3_step(stmt);
  if (rc != SQLITE_DONE) {
    fprintf(stderr, "Execution failed: %s\n", sqlite3_errmsg(db));
    sqlite3_finalize(stmt);
    pthread_mutex_unlock(&db_mutex);
    return nullptr;
  }

  int inserted_id = sqlite3_last_insert_rowid(db);

  sqlite3_finalize(stmt);
  printf("User inserted successfully. ID: %d\n", inserted_id);
  pthread_mutex_unlock(&db_mutex);
  User *new_db_user =
      new_user(inserted_id, username, email, password, group, is_superuser);
  return new_db_user;
}