// A stand-in for the Go bindings, for looking at screens in a browser.
//
// The app only exists inside Wails, so until this there was no way to put a
// screen in front of somebody without a Windows build - which is how the
// first-run experience went unreviewed. Loaded ONLY by the dev server and only
// with ?mock=<scenario>; a production bundle never contains it.
//
//   ?mock=fresh       first launch after install: unclaimed, engine starting
//   ?mock=standalone  chose "run on this PC only", no cameras yet
//   ?mock=claimed     claimed, signed in, one camera, arrivals flowing
//
// State is in memory and advances as you click, so the flow can be walked.
const scenario = new URLSearchParams(location.search).get('mock')

if (scenario) {
  const st = {
    claimed: scenario === 'claimed',
    standalone: scenario === 'standalone',
    logged_in: scenario === 'claimed',
    cameras: scenario === 'claimed' ? [{id: 'entrance', label: 'Entrance', host: '192.168.1.122', port: 554, path: '/ch0_1.264', username: 'admin', has_password: true, enabled: true}] : [],
    engine: scenario === 'fresh' ? 'starting' : 'running',
    startedAt: Date.now(),
  }
  const user = {id: 'u1', email: 'suriya@tenext.in', full_name: 'Suriya', role: 'owner', client_id: 'c1', client_name: 'TeNext Retail'}
  const session = () => ({logged_in: st.logged_in, user: st.logged_in ? user : {}, site_name: st.claimed ? 'TeNext Chennai' : '', claimed: st.claimed, standalone: st.standalone && !st.claimed})
  const now = () => new Date().toISOString()
  const arrivals = () => st.cameras.length === 0 ? [] : [
    {type: 'person.seen', ts: now(), camera_id: 'entrance', data: {label: 'Visitor 3', identity_id: 3, similarity: 0.61, gender: 'Male', age: 34, emotion: 'neutral'}},
    {type: 'person.new', ts: new Date(Date.now() - 95e3).toISOString(), camera_id: 'entrance', data: {label: 'Visitor 7', identity_id: 7, gender: 'Female', age: 28}},
    {type: 'person.seen', ts: new Date(Date.now() - 410e3).toISOString(), camera_id: 'entrance', data: {label: 'Priya', identity_id: 2, similarity: 0.72, gender: 'Female', age: 41}},
  ]
  const delay = (v, ms = 120) => new Promise(r => setTimeout(() => r(v), ms))
  const App = {
    Session: () => delay(session()),
    Login: (email) => { st.logged_in = true; user.email = email || user.email; return delay(session()) },
    Logout: () => { st.logged_in = false; return delay(session()) },
    Claim: (code) => code.replace(/[^A-Z0-9]/gi, '').length >= 20
      ? (st.claimed = true, st.standalone = false, delay(session(), 900))
      : Promise.reject(new Error('That installation code is not valid. Ask for a new one.')),
    RunStandalone: () => { st.standalone = true; return delay(session()) },
    EngineStatus: () => {
      // The engine takes a minute or two on first run (models download).
      if (st.engine === 'starting' && Date.now() - st.startedAt > 20000) st.engine = 'running'
      const cams = Object.fromEntries(st.cameras.map(c => [c.id, true]))
      return delay({state: st.engine === 'starting' ? 'running' : 'running', reachable: st.engine !== 'starting', recognition_model: st.engine === 'starting' ? '' : 'w600k_r50', cameras: cams, restarts: 0})
    },
    StartEngine: () => delay({state: 'running', reachable: true}),
    StopEngine: () => delay({state: 'stopped', reachable: false}),
    Cameras: () => delay(st.cameras.map(c => ({...c, connected: true, frames: 1200, faces: 9}))),
    TestCamera: (cam) => delay({ok: Boolean(cam.host), width: 800, height: 448, codec: 'hevc', error: cam.host ? '' : 'no host'}, 1500),
    SaveCamera: (id, cam) => { const c = {id: id || cam.id || 'cam' + (st.cameras.length + 1), ...cam, has_password: Boolean(cam.password)}; delete c.password; st.cameras = [...st.cameras.filter(x => x.id !== c.id), c]; return delay(c) },
    DeleteCamera: (id) => { st.cameras = st.cameras.filter(c => c.id !== id); return delay(null) },
    StartPlacementCheck: () => delay({state: 'running'}),
    PlacementResult: () => delay({state: 'finished', verdict: 'good', headline: 'faces recognised on a walk-past', advice: []}),
    StreamURL: () => '',
    Live: () => delay({stats: {cameras: st.cameras.map(c => ({camera_id: c.id, connected: true, pipeline: {best_quality: {n: 40, fraction_below_gate: 0.18}}})), gallery: {identities: st.cameras.length ? 7 : 0, sightings: st.cameras.length ? 44 : 0}}, events: arrivals()}),
    PipelineStatus: () => delay({webhook_url: 'http://127.0.0.1:53658/events', queued: 0, dropped: 0, claimed: st.claimed, standalone: st.standalone && !st.claimed, broker_up: st.claimed, accepted: st.claimed ? 12 : 0}),
    LocalIdentities: () => delay([]), LocalSightings: () => delay([]),
    Footfall: () => delay({total: 0, buckets: []}), Sites: () => delay([]),
    VisitorHistory: () => delay([]), VisitorPhoto: () => delay({available: false, reason: 'This system is not storing images.'}),
    ForgetCustomer: () => delay(null), Sales: () => delay([]),
    Customers: () => delay([{id: 'v1', label: 'Priya', number: 2, first_seen_at: now(), last_seen_at: now(), visits: 6}]),
    SaveProfile: () => delay(null), RecordPurchase: () => delay(null),
    Ask: (history) => {
      const q = history[history.length - 1]?.text ?? ''
      if (!st.claimed) return Promise.reject(new Error('The assistant is not switched on for this server.'))
      const text = /camera/i.test(q)
        ? 'Go to Cameras and press Add camera. The address is on a sticker on the camera itself; pick the make and I fill in the stream path. Test it, save it, then walk past it once so I can tell you whether the placement works.'
        : /code|install/i.test(q)
          ? 'Whoever runs head office makes one: open the shop there, press Set up a shop PC, and read the code out. It works once.'
          : /who|morning|came/i.test(q)
            ? 'Three people so far: Priya at 13:12 (her sixth visit), a new face at 13:18 I have called Visitor 7, and Visitor 3 just now.'
            : 'Chennai is online and the door camera is connected, but nobody has proved it yet. Walk past it once with Check placement running and I will tell you if it can actually see faces - until then a quiet screen might just be a badly aimed camera.'
      return delay({text, used: /camera|code/i.test(q) ? [] : ['site_status', 'cameras']}, 1400)
    },
  }
  window.go = {main: {App}}
}