export type Exercise = {
  id: string
  name: string
  reps: number
  icon: string
  intervalMinutes: number
  enabled: boolean
  nextFireAt: number
  lastDoneAt?: number
}

export type NotificationMode = 'toast' | 'modal' | 'both'
export type Theme = 'light' | 'dark' | 'system'
export type Language = 'ru' | 'en'

/**
 * Hours when reminders are silenced. `from`/`to` are "HH:MM" 24h strings,
 * `days` are weekday indices 0=Sun..6=Sat. Empty `days` = applies every day.
 * If `to <= from` the window wraps across midnight (e.g. 22:00 → 07:00).
 */
export type QuietHours = {
  enabled: boolean
  from: string
  to: string
  /** Days when the quiet window is active. */
  days: number[]
}

export type Settings = {
  globalEnabled: boolean
  notificationMode: NotificationMode
  soundEnabled: boolean
  startWithWindows: boolean
  minimizeToTray: boolean
  startMinimized: boolean
  theme: Theme
  language: Language
  snoozeMinutes: number
  quietHours: QuietHours
}

export type AppState = {
  exercises: Exercise[]
  settings: Settings
  challenges: Challenge[]
  gamesEnabled: Partial<Record<GameId, boolean>>
  history?: HistoryEntry[]
}

export type HistoryAction = 'done' | 'skip' | 'snooze'

export type HistoryEntry = {
  /** ms epoch */
  ts: number
  exerciseId: string
  action: HistoryAction
  /** When user did less than planned. Only meaningful for `done`. */
  actualReps?: number
}

export type Tick = {
  exerciseId: string
  msUntilFire: number
  enabled: boolean
}

export type FireEvent = {
  exercise: Exercise
  mode: NotificationMode
}

export type GameId = 'dota2'

export const GAME_STATS: Record<GameId, readonly GameStat[]> = {
  dota2: [
    'deaths',
    'kills',
    'assists',
    'last_hits',
    'denies',
    'duration_min'
  ] as const
}

export type GameStat =
  | 'deaths'
  | 'kills'
  | 'assists'
  | 'last_hits'
  | 'denies'
  | 'duration_min'

export const STAT_LABELS: Record<GameStat, string> = {
  deaths: 'смертей',
  kills: 'убийств',
  assists: 'ассистов',
  last_hits: 'ласт-хитов',
  denies: 'денаев',
  duration_min: 'минут матча'
}

export const STAT_LABELS_EN: Record<GameStat, string> = {
  deaths: 'deaths',
  kills: 'kills',
  assists: 'assists',
  last_hits: 'last hits',
  denies: 'denies',
  duration_min: 'match minutes'
}

export function statLabel(stat: GameStat, lang: Language): string {
  return (lang === 'en' ? STAT_LABELS_EN : STAT_LABELS)[stat]
}

export type Challenge = {
  id: string
  name: string
  gameId: GameId
  stat: GameStat
  multiplier: number
  exerciseName: string
  icon: string
  enabled: boolean
}

export type LaunchOptionStatus = 'applied' | 'queued' | 'no_user' | 'not_needed'

export type GameStatus = {
  id: GameId
  name: string
  installed: boolean
  installPath?: string
  integrationActive: boolean   // cfg installed + listener running
  launchOption?: string        // e.g. "-gamestateintegration"
  launchOptionStatus: LaunchOptionStatus
  steamRunning?: boolean       // helps the UI explain queued state
  enabled: boolean
}

export type ChallengeResult = {
  challengeId: string
  name: string
  icon: string
  exerciseName: string
  reps: number
  statValue: number
  /** Pre-localised label for backward compat; renderer prefers `stat`. */
  statLabel: string
  /** Stat key; renderer uses this to localise on demand. */
  stat?: GameStat
}

export type MatchSummary = {
  gameId: GameId
  gameName: string
  durationMs: number
  won?: boolean
  results: ChallengeResult[]
}

export const DEFAULT_SETTINGS: Settings = {
  globalEnabled: true,
  notificationMode: 'modal',
  soundEnabled: true,
  startWithWindows: false,
  minimizeToTray: true,
  startMinimized: false,
  theme: 'light',
  language: 'ru',
  snoozeMinutes: 5,
  quietHours: {
    enabled: false,
    from: '22:00',
    to: '08:00',
    days: [0, 1, 2, 3, 4, 5, 6]
  }
}

/**
 * Returns true if `now` falls inside the quiet window. Handles wrap-around
 * windows (e.g. 22:00 → 08:00). Exposed from shared so both main scheduler
 * and renderer settings UI can use the same logic.
 */
export function isQuietAt(qh: QuietHours, now: Date): boolean {
  if (!qh.enabled) return false
  const dow = now.getDay() // 0..6
  if (qh.days.length > 0 && !qh.days.includes(dow)) return false
  const [fh, fm] = qh.from.split(':').map(Number)
  const [th, tm] = qh.to.split(':').map(Number)
  const cur = now.getHours() * 60 + now.getMinutes()
  const fromMin = fh * 60 + fm
  const toMin = th * 60 + tm
  if (fromMin === toMin) return false
  if (fromMin < toMin) {
    // Same-day window.
    return cur >= fromMin && cur < toMin
  }
  // Wraps midnight: active if after `from` today OR before `to` today.
  return cur >= fromMin || cur < toMin
}

export const SAMPLE_EXERCISES: Omit<Exercise, 'id' | 'nextFireAt'>[] = [
  { name: 'Приседания', reps: 10, icon: 'Activity', intervalMinutes: 30, enabled: true },
  { name: 'Отжимания', reps: 10, icon: 'Dumbbell', intervalMinutes: 45, enabled: true },
  { name: 'Растяжка спины', reps: 1, icon: 'StretchHorizontal', intervalMinutes: 60, enabled: false }
]

export type UpdaterStatus =
  | { kind: 'idle' }
  | { kind: 'unsupported'; reason: string }
  | { kind: 'checking' }
  | { kind: 'not-available'; currentVersion: string }
  | { kind: 'available'; version: string; releaseDate?: string }
  | {
      kind: 'downloading'
      percent: number
      transferred: number
      total: number
      bytesPerSecond: number
    }
  | { kind: 'downloaded'; version: string }
  | { kind: 'error'; message: string }