import type { Employee, OrgChartDataset, Organization } from '@hm-design/org-chart';
import small from '../org-chart/data-expanded-small.json';
import medium from '../org-chart/data-expanded-medium.json';

/** Deterministic single-company dataset: 6 divisions with 5·2·4·1·3·2 teams.
 * Virtual names only; no live data. Leaders are counted in `total`. */
export function createSamanDataset(total = 500): OrgChartDataset {
  const organizations: Organization[] = [];
  const employees: Employee[] = [];
  const add = (organizationId: string, position: string) => {
    const id = `saman-e${String(employees.length + 1).padStart(3, '0')}`;
    employees.push({ id, organizationId, affiliationId: 'saman', name: `가상직원 ${String(employees.length + 1).padStart(3, '0')}`, position, jobTitle: null, profileImage: null, workStatus: 'active' });
    return id;
  };
  const org = (id: string, parentId: string | null, name: string, type: Organization['type'], displayOrder: number) => {
    const node: Organization = { id, companyId: 'saman', parentId, name, type, leaderId: null, displayOrder };
    organizations.push(node);
    return node;
  };
  const root = org('saman-root', null, '삼안', 'root', 0);
  root.leaderId = add(root.id, '대표이사');
  const teams: Organization[] = [];
  [5, 2, 4, 1, 3, 2].forEach((teamCount, d) => {
    const division = org(`saman-d${d + 1}`, root.id, `가상 ${d + 1}본부`, 'division', d);
    division.leaderId = add(division.id, '본부장');
    for (let t = 0; t < teamCount; t++) {
      const team = org(`saman-d${d + 1}-t${t + 1}`, division.id, `가상 ${d + 1}-${t + 1}팀`, 'team', t);
      team.leaderId = add(team.id, '팀장');
      teams.push(team);
    }
  });
  let cursor = 0;
  while (employees.length < total) add(teams[cursor++ % teams.length]!.id, ['사원', '선임', '책임', '수석'][cursor % 4]!);
  return {
    schemaVersion: '0.1-draft', organizations, employees, affiliations: [{ id: 'saman', name: '삼안' }], relations: [],
    presentation: { title: '삼안 조직도 · 가상 데이터', description: null, hubText: null,
      groups: { showEmployees: true, showSummary: false, showDispatched: false, showOnLeave: false, showAffiliations: false }, organizationOrder: [] },
    metadata: { asOfDate: '2026-10-13', dataVersion: `chart-only-saman-${total}`, updateNote: '가상 데이터 · 운영 정보 아님' },
  } as OrgChartDataset;
}

export const datasets: Record<string, () => OrgChartDataset> = {
  '20': () => structuredClone(small) as OrgChartDataset,
  '100': () => structuredClone(medium) as OrgChartDataset,
  '500': () => createSamanDataset(500),
};

export function readQuery() {
  const query = new URLSearchParams(location.search);
  const data = datasets[query.get('data') ?? ''] ? query.get('data')! : '20';
  const layout = (['tb', 'lr', 'hybrid'] as const).find(type => type === query.get('layout')) ?? 'tb';
  // embed=1 is a verification layout: a bounded canvas inside a scrolling page.
  return { data, layout, embed: query.get('embed') === '1' };
}