/**
 * Sichtbarkeit / Umfang für body_history_viz (sync mit backend dashboard_widget_config).
 * `null` / fehlend → Verlauf: alles sichtbar (vollständige Parität zur History-Seite).
 */

/** Verlauf-Tab Körper: volle Parität (kein Layout-Config). */
export const BODY_HISTORY_VIZ_HISTORY_FULL = {
  chart_days: 90,
  show_goals_strip: true,
  show_intro_blurb: true,
  show_layer_meta: true,
  show_kpis: true,
  kpi_detail: 'full',
  show_weight_chart: true,
  show_body_fat_chart: true,
  show_proportion_chart: true,
  show_circumference_index_chart: true,
  show_circumference_lines_chart: true,
}

/** Default für Dashboard-Widget (schlank). */
export const BODY_HISTORY_VIZ_WIDGET_DEFAULTS = {
  chart_days: 30,
  show_goals_strip: false,
  show_intro_blurb: false,
  show_layer_meta: false,
  show_kpis: true,
  kpi_detail: 'compact',
  show_weight_chart: true,
  show_body_fat_chart: false,
  show_proportion_chart: false,
  show_circumference_index_chart: false,
  show_circumference_lines_chart: false,
}

const BOOL_KEYS = [
  'show_goals_strip',
  'show_intro_blurb',
  'show_layer_meta',
  'show_kpis',
  'show_weight_chart',
  'show_body_fat_chart',
  'show_proportion_chart',
  'show_circumference_index_chart',
  'show_circumference_lines_chart',
]

/**
 * @param {Record<string, unknown>|null|undefined} raw — aus Layout-Config (Backend liefert nach Save ggf. alle Keys)
 * @returns {typeof BODY_HISTORY_VIZ_WIDGET_DEFAULTS}
 */
export function normalizeBodyHistoryVizConfig(raw) {
  const base = { ...BODY_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
}

const COMPACT_KPI_KEYS = new Set(['weight', 'bf', 'lean_ffmi'])

/**
 * @param {Array<{ key: string }>} tiles
 * @param {'compact'|'full'} detail
 */
export function filterBodyHistoryKpiTiles(tiles, detail) {
  if (detail === 'full' || !Array.isArray(tiles)) return tiles
  return tiles.filter((t) => COMPACT_KPI_KEYS.has(t.key))
}