const API_BASE_URL = import.meta.env?.VITE_API_BASE_URL || "/api";

async function request(path, options = {}) {
  const response = await fetch(`${API_BASE_URL}${path}`, {
    credentials: "include",
    headers: {
      "Content-Type": "application/json",
      ...(options.headers || {})
    },
    ...options
  });

  if (response.status === 204) {
    return null;
  }

  const payload = await response.json();

  if (!response.ok) {
    throw new Error(payload.error || "Request failed");
  }

  return payload;
}

export const api = {
  me: () => request("/auth/me"),
  login: (body) => request("/auth/login", { method: "POST", body: JSON.stringify(body) }),
  logout: () => request("/auth/logout", { method: "POST" }),
  tables: () => request("/db/tables"),
  createTable: (body) => request("/db/tables", { method: "POST", body: JSON.stringify(body) }),
  deleteTable: (tableName) => request(`/db/tables/${tableName}`, { method: "DELETE" }),
  tableDetails: (tableName) => request(`/db/tables/${tableName}/details`),
  rows: (tableName, query = {}) => {
    const params = new URLSearchParams(query).toString();
    return request(`/db/tables/${tableName}/rows${params ? `?${params}` : ""}`);
  },
  createRow: (tableName, body) => request(`/db/tables/${tableName}/rows`, { method: "POST", body: JSON.stringify(body) }),
  updateRow: (tableName, id, body) =>
    request(`/db/tables/${tableName}/rows/${id}`, { method: "PUT", body: JSON.stringify(body) }),
  deleteRow: (tableName, id) => request(`/db/tables/${tableName}/rows/${id}`, { method: "DELETE" }),
  addColumn: (tableName, body) =>
    request(`/db/tables/${tableName}/columns`, { method: "POST", body: JSON.stringify(body) }),
  alterColumn: (tableName, columnName, body) =>
    request(`/db/tables/${tableName}/columns/${columnName}`, { method: "PATCH", body: JSON.stringify(body) }),
  dropColumn: (tableName, columnName) => request(`/db/tables/${tableName}/columns/${columnName}`, { method: "DELETE" }),
  createIndex: (tableName, body) =>
    request(`/db/tables/${tableName}/indexes`, { method: "POST", body: JSON.stringify(body) }),
  dropIndex: (tableName, indexName) => request(`/db/tables/${tableName}/indexes/${indexName}`, { method: "DELETE" }),
  executeSql: (sql) => request("/sql/execute", { method: "POST", body: JSON.stringify({ sql }) }),
  users: () => request("/admin/users"),
  roles: () => request("/admin/roles"),
  audit: (search = "") => request(`/admin/audit${search ? `?search=${encodeURIComponent(search)}` : ""}`),
  postgresLogs: (search = "") =>
    request(`/admin/postgres-logs${search ? `?search=${encodeURIComponent(search)}` : ""}`)
};