const BASE = '/traffic/api'

async function req(method, path, body) {
  const opts = { method, headers: { 'Content-Type': 'application/json' } }
  if (body) opts.body = JSON.stringify(body)
  const r = await fetch(BASE + path, opts)
  if (!r.ok) throw new Error(`${method} ${path} -> ${r.status}`)
  return r.json()
}

export const api = {
  health:       () => req('GET', '/healthz'),
  interfaces:   () => req('GET', '/interfaces'),
  mode:         () => req('GET', '/mode'),
  setMode:      (mode) => req('POST', '/mode', { mode }),

  // Flows
  flows:        () => req('GET', '/flows'),
  createFlow:   (f) => req('POST', '/flows', f),
  getFlow:      (id) => req('GET', `/flows/${id}`),
  updateFlow:   (id, f) => req('PUT', `/flows/${id}`, f),
  deleteFlow:   (id) => req('DELETE', `/flows/${id}`),
  startFlow:    (id) => req('POST', `/flows/${id}/start`),
  stopFlow:     (id) => req('POST', `/flows/${id}/stop`),
  flowStats:    (id) => req('GET', `/flows/${id}/stats`),

  // Tests
  tests:        () => req('GET', '/tests'),
  createTest:   (t) => req('POST', '/tests', t),
  getTest:      (id) => req('GET', `/tests/${id}`),
  startTest:    (id) => req('POST', `/tests/${id}/start`),
  stopTest:     (id) => req('POST', `/tests/${id}/stop`),
  testResults:  (id) => req('GET', `/tests/${id}/results`),

  // Presets
  presets:      () => req('GET', '/presets'),
  loadPreset:   (name, overrides) => req('POST', `/presets/${name}`, overrides),

  // Stats
  statsHistory: () => req('GET', '/stats/history'),

  // Ping
  ping:           (target, count) => req('POST', '/ping', { target, count: count || 5 }),

  // Responder
  responderStats: () => req('GET', '/responder/stats'),
  responderReset: () => req('POST', '/responder/reset'),
}