import type { FilterOperator } from "./table-properties-types"

/**
 * Semantic cell kind for a column — drives default filter icon, type, and
 * static option labels when `ColumnDef.filter` is omitted or partial.
 *
 * @see `resolveColumnFilter` in `column-filter.ts`
 * @see `apps/web/docs/table-column-cells-pattern.md`
 */
export type ColumnCellKind =
  | "person"
  | "people-rail"
  | "status"
  | "pill"
  | "tags"
  | "signal-bars"
  | "boolean"
  | "progress"
  | "rating"
  | "currency"
  | "numeric"
  | "attachment"
  | "external-link"
  | "relative-time"
  | "date"
  | "text"

export type ColumnFilterSelectVariant = "default" | "person"

export interface ColumnCellKindFilterPreset {
  type: "select" | "text" | "date" | "date-range" | "range"
  icon: string
  operators?: readonly FilterOperator[]
  options?: { value: string; label: string }[]
  selectVariant?: ColumnFilterSelectVariant
  /** When true and no explicit min/max — bounds come from the hub dataset. */
  dataBounds?: boolean
  rangeMin?: number
  rangeMax?: number
  rangeStep?: number
  /** Suffix in filter UI, e.g. "%" for progress. */
  rangeUnit?: string
}

const SELECT_IS: readonly FilterOperator[] = ["is", "is_not"]
const TEXT_CONTAINS: readonly FilterOperator[] = ["contains", "not_contains"]

const RATING_OPTIONS = [1, 2, 3, 4, 5].map(n => ({
  value: String(n),
  label: n === 1 ? "1 star" : `${n} stars`,
}))

const BOOLEAN_OPTIONS = [
  { value: "true", label: "Yes" },
  { value: "false", label: "No" },
]

const SIGNAL_OPTIONS = [
  { value: "1", label: "Low" },
  { value: "2", label: "Normal" },
  { value: "3", label: "High" },
]

export const COLUMN_CELL_KIND_FILTER_PRESETS: Record<
  ColumnCellKind,
  ColumnCellKindFilterPreset
> = {
  person: {
    type: "select",
    icon: "fa-user",
    operators: SELECT_IS,
    selectVariant: "person",
  },
  "people-rail": {
    type: "select",
    icon: "fa-users",
    operators: SELECT_IS,
    selectVariant: "person",
  },
  status: { type: "select", icon: "fa-circle-check", operators: SELECT_IS },
  pill: { type: "select", icon: "fa-list-check", operators: SELECT_IS },
  tags: { type: "text", icon: "fa-tags", operators: TEXT_CONTAINS },
  "signal-bars": {
    type: "select",
    icon: "fa-signal-bars",
    operators: SELECT_IS,
    options: SIGNAL_OPTIONS,
  },
  boolean: {
    type: "select",
    icon: "fa-toggle-on",
    operators: SELECT_IS,
    options: BOOLEAN_OPTIONS,
  },
  progress: {
    type: "range",
    icon: "fa-chart-simple",
    rangeMin: 0,
    rangeMax: 100,
    rangeStep: 1,
    rangeUnit: "%",
  },
  rating: {
    type: "select",
    icon: "fa-star",
    operators: SELECT_IS,
    options: RATING_OPTIONS,
  },
  currency: {
    type: "range",
    icon: "fa-dollar-sign",
    dataBounds: true,
    rangeUnit: "",
  },
  numeric: {
    type: "range",
    icon: "fa-hashtag",
    dataBounds: true,
    rangeStep: 1,
  },
  attachment: { type: "text", icon: "fa-paperclip", operators: TEXT_CONTAINS },
  "external-link": { type: "text", icon: "fa-arrow-up-right-from-square", operators: TEXT_CONTAINS },
  "relative-time": { type: "date-range", icon: "fa-clock", operators: SELECT_IS },
  date: { type: "date", icon: "fa-calendar-days", operators: SELECT_IS },
  text: { type: "text", icon: "fa-font", operators: TEXT_CONTAINS },
}

export function filterPresetForCellKind(
  kind: ColumnCellKind,
): ColumnCellKindFilterPreset {
  return COLUMN_CELL_KIND_FILTER_PRESETS[kind]
}