/**
 * Sichtbarkeit für nutrition_history_viz (sync mit backend dashboard_widget_config).
 * `visibility === undefined` → Verlauf-Tab: alles an.
 */

export const NUTRITION_HISTORY_VIZ_HISTORY_FULL = {
  chart_days: 30,
  show_goals_strip: true,
  show_intro_blurb: true,
  show_kpis: true,
  kpi_detail: 'full',
  show_kcal_vs_weight: true,
  show_calorie_balance_chart: true,
  show_protein_lean_chart: true,
  show_heuristics: true,
  show_macro_daily_bars: true,
  show_macro_distribution_pair: true,
  show_energy_protein_charts: true,
}

export const NUTRITION_HISTORY_VIZ_WIDGET_DEFAULTS = {
  chart_days: 30,
  show_goals_strip: false,
  show_intro_blurb: false,
  show_kpis: true,
  kpi_detail: 'compact',
  show_kcal_vs_weight: true,
  show_calorie_balance_chart: false,
  show_protein_lean_chart: false,
  show_heuristics: false,
  show_macro_daily_bars: true,
  show_macro_distribution_pair: true,
  show_energy_protein_charts: false,
}

const BOOL_KEYS = [
  'show_goals_strip',
  'show_intro_blurb',
  'show_kpis',
  'show_kcal_vs_weight',
  'show_calorie_balance_chart',
  'show_protein_lean_chart',
  'show_heuristics',
  'show_macro_daily_bars',
  'show_macro_distribution_pair',
  'show_energy_protein_charts',
]

/**
 * @param {Record<string, unknown>|null|undefined} raw
 */
export function normalizeNutritionHistoryVizConfig(raw) {
  const base = { ...NUTRITION_HISTORY_VIZ_WIDGET_DEFAULTS }
  if (!raw || typeof raw !== 'object') return base
  for (const k of BOOL_KEYS) {
    if (Object.prototype.hasOwnProperty.call(raw, k)) {
      base[k] = raw[k] === true
    }
  }
  if (raw.kpi_detail === 'full' || raw.kpi_detail === 'compact') {
    base.kpi_detail = raw.kpi_detail
  }
  if (raw.chart_days != null) {
    const n = Number(raw.chart_days)
    if (Number.isFinite(n)) {
      base.chart_days = Math.min(90, Math.max(7, Math.round(n)))
    }
  }
  return base
}

/**
 * @param {Array<object>} kpiTiles
 * @param {'compact'|'full'} detail
 */
export function filterNutritionHistoryKpiTiles(kpiTiles, detail) {
  if (detail === 'full' || !Array.isArray(kpiTiles)) return kpiTiles
  return kpiTiles.slice(0, 4)
}