/**
 * Table Toolbar
 *
 * Floating toolbar that appears when the cursor is in a table,
 * providing commands for row/column manipulation, cell merging,
 * header toggling, and cell background color.
 */
import type { TableCommand, TableCommandMap, CellAttrs, TooltipPosition } from './types.js';

/**
 * Command definitions for all table operations.
 * Each maps to a TipTap table extension command.
 */
export const TABLE_COMMANDS: TableCommandMap = {
  addRowBefore: {
    label: 'Add row above',
    icon: '↑',
    command: 'addRowBefore',
  },
  addRowAfter: {
    label: 'Add row below',
    icon: '↓',
    command: 'addRowAfter',
  },
  addColumnBefore: {
    label: 'Add column left',
    icon: '←',
    command: 'addColumnBefore',
  },
  addColumnAfter: {
    label: 'Add column right',
    icon: '→',
    command: 'addColumnAfter',
  },
  deleteRow: {
    label: 'Delete row',
    icon: '✕',
    command: 'deleteRow',
  },
  deleteColumn: {
    label: 'Delete column',
    icon: '✕',
    command: 'deleteColumn',
  },
  mergeCells: {
    label: 'Merge cells',
    icon: '⧉',
    command: 'mergeCells',
  },
  splitCell: {
    label: 'Split cell',
    icon: '⧈',
    command: 'splitCell',
  },
  toggleHeaderRow: {
    label: 'Toggle header row',
    icon: '𝐓',
    command: 'toggleHeaderRow',
  },
};

/**
 * Manages visibility and position of the floating table toolbar.
 */
export class TableToolbarState {
  visible: boolean;
  position: TooltipPosition | null;

  constructor() {
    this.visible = false;
    this.position = null;
  }

  show(pos: TooltipPosition): void {
    this.visible = true;
    this.position = { ...pos };
  }

  hide(): void {
    this.visible = false;
    this.position = null;
  }

  updatePosition(pos: TooltipPosition): void {
    this.position = { ...pos };
  }
}

/**
 * Parse cell background color from TipTap cell attributes.
 */
export function parseCellColor(attrs: CellAttrs | null | undefined): string | null {
  if (!attrs) return null;
  if (attrs.background) return attrs.background;
  if (attrs.backgroundColor) return attrs.backgroundColor;
  return null;
}

/**
 * Normalize a color string to lowercase hex.
 * Handles 3-digit shorthand (#f00 -> #ff0000).
 */
export function normalizeCellColor(color: string | null | undefined): string | null {
  if (!color) return null;
  const trimmed = color.trim();
  if (!trimmed) return null;

  let hex = trimmed.toLowerCase();

  // Expand 3-digit hex to 6-digit
  if (/^#[0-9a-f]{3}$/.test(hex)) {
    hex = '#' + hex[1] + hex[1] + hex[2] + hex[2] + hex[3] + hex[3];
  }

  return hex;
}