export type RepoState = 'CONNECTED' | 'DISCONNECTED' | 'ERROR';

export interface RepoStatus {
  state: RepoState;
  stage: string;
  last_updated: string | null;
}

export interface MetricSeries {
  avg: number[];
  max: number[];
  min: number[];
}

export interface AggregatedMetrics {
  timestamps: string[];
  cpu: MetricSeries;
  memory: MetricSeries;
}

export interface Repository {
  id: string;
  namespace: string;
  repo: string;
}

const API_BASE = '/api';

export const fetchRepositories = async (): Promise<Repository[]> => {
  const res = await fetch(`${API_BASE}/repos`);
  if (!res.ok) throw new Error('Failed to fetch repositories');
  return res.json();
};

export const addRepository = async (namespace: string, repo: string): Promise<Repository> => {
  const res = await fetch(`${API_BASE}/repos`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ namespace, repo }),
  });
  if (!res.ok) throw new Error('Failed to add repository');
  return res.json();
};

export const removeRepository = async (id: string): Promise<void> => {
  const res = await fetch(`${API_BASE}/repos${id}`, {
    method: 'DELETE',
  });
  if (!res.ok) throw new Error('Failed to remove repository');
};

export const fetchRepoStatus = async (repoId: string): Promise<RepoStatus> => {
  const res = await fetch(`${API_BASE}/status?repoId=${repoId}`);
  if (!res.ok) throw new Error('Failed to fetch status');
  return res.json();
};

export const fetchRepoMetrics = async (repoId: string, range: string = 'hour'): Promise<AggregatedMetrics> => {
  const res = await fetch(`${API_BASE}/metrics?repoId=${repoId}&range=${range}`);
  if (!res.ok) throw new Error('Failed to fetch metrics');
  return res.json();
};