import {
  INITIAL_EXERCISE_LIST_FILTERS,
  splitMnCatalogRules,
  splitScalarCatalogRules,
} from '../constants/exerciseListFilters'

/** Dashboard-Deep-Link: ?mine=1, optional ?status=draft — überschreibt gespeicherte Prefs-Kombination. */
export function applyDashboardExerciseListUrl(mergedFromPrefs) {
  try {
    const sp = new URLSearchParams(window.location.search)
    const mine = sp.get('mine') === '1' || sp.get('created_by_me') === '1'
    const statusDraft = sp.get('status') === 'draft'

    if (mine) {
      const next = { ...INITIAL_EXERCISE_LIST_FILTERS }
      if (statusDraft) {
        next.status_rules = [{ key: 'url-dashboard-draft', id: 'draft', mode: 'require' }]
      }
      return next
    }

    if (statusDraft) {
      return {
        ...mergedFromPrefs,
        status_rules: [{ key: 'url-dashboard-draft', id: 'draft', mode: 'require' }],
      }
    }
    return mergedFromPrefs
  } catch {
    return mergedFromPrefs
  }
}

export function buildExerciseListQueryBase(filters, debouncedSearch, debouncedAiSearch, mineOnly) {
  const q = {}
  const n = (v) => (v === '' || v == null ? undefined : Number(v))
  const ids = (arr) =>
    Array.isArray(arr) && arr.length ? arr.map((x) => Number(x)).filter((x) => !Number.isNaN(x)) : undefined
  const fMn = splitMnCatalogRules(filters.focus_rules)
  if (fMn.includeIds.length) q.focus_area_must_include_ids = fMn.includeIds
  if (fMn.excludeIds.length) q.focus_area_must_exclude_ids = fMn.excludeIds
  if (filters.focus_only_without) q.focus_only_without_focus_areas = true

  const fa = ids(filters.focus_area_ids)
  if (fa?.length) q.focus_area_ids = fa

  const sdMn = splitMnCatalogRules(filters.style_direction_rules)
  if (sdMn.includeIds.length) q.style_direction_must_include_ids = sdMn.includeIds
  if (sdMn.excludeIds.length) q.style_direction_must_exclude_ids = sdMn.excludeIds
  const sdLegacy = ids(filters.style_direction_ids)
  if (sdLegacy?.length) q.style_direction_ids = sdLegacy

  const ttMn = splitMnCatalogRules(filters.training_type_rules)
  if (ttMn.includeIds.length) q.training_type_must_include_ids = ttMn.includeIds
  if (ttMn.excludeIds.length) q.training_type_must_exclude_ids = ttMn.excludeIds
  const ttLegacy = ids(filters.training_type_ids)
  if (ttLegacy?.length) q.training_type_ids = ttLegacy

  const tgMn = splitMnCatalogRules(filters.target_group_rules)
  if (tgMn.includeIds.length) q.target_group_must_include_ids = tgMn.includeIds
  if (tgMn.excludeIds.length) q.target_group_must_exclude_ids = tgMn.excludeIds
  const tgLegacy = ids(filters.target_group_ids)
  if (tgLegacy?.length) q.target_group_ids = tgLegacy

  const visMn = splitScalarCatalogRules(filters.visibility_rules)
  if (visMn.includeVals.length) q.visibility_any = visMn.includeVals
  if (visMn.excludeVals.length) q.visibility_exclude_any = visMn.excludeVals

  const stMn = splitScalarCatalogRules(filters.status_rules)
  if (stMn.includeVals.length) q.status_any = stMn.includeVals
  if (stMn.excludeVals.length) q.status_exclude_any = stMn.excludeVals

  const sk = ids(filters.skill_ids)
  if (sk?.length) q.skill_ids = sk
  if (filters.skill_min_level) q.skill_min_level = n(filters.skill_min_level)
  if (filters.skill_max_level) q.skill_max_level = n(filters.skill_max_level)
  if (filters.exclude_without_focus) q.exclude_without_focus = true
  if (filters.include_archived) q.include_archived = true
  if (debouncedSearch) q.search = debouncedSearch
  if (debouncedAiSearch) q.ai_search = debouncedAiSearch
  if (mineOnly) q.created_by_me = true
  return q
}