/**
 * Synthetic BA tree for the menu-node tests.
 *
 *   CRM/                       (app)
 *     PIPELINE/                (module, depends=ERP/REFERENCES) — rbac.md with human rows + machine blocks,
 *                              entité.md, a use-case rollup pointing at ./clients, pagespecs (Client.list, Devis.list),
 *                              .run-snapshot.json
 *       clients/               (section) use-case.md UC-…-CLIENTS-001/002, screen.md SCR-…-CLIENTS-001
 *         vip/                 (resource) use-case.md UC-…-CLIENTS-VIP-001
 *       devis/                 (section) use-case.md UC-…-DEVIS-001 citing UC-…-CLIENTS-001
 *     BILLING/                 (module, depends=CRM/PIPELINE + ## Dépendances) — entité.md `scope cross-module (CRM/PIPELINE)`,
 *                              pagespecs/Invoice.list.md with fkTo pipeline.clients + relatedTabs
 *       invoices/              (section)
 *   ERP/                       (app)
 *     REFERENCES/              (module)
 *       rapports/              (section) — the XAPP-001 twin
 */
import { mkdirSync, writeFileSync } from 'node:fs'
import { dirname, join } from 'node:path'
import { placeholderDocs } from '../../../../../lib/ba-menu-tree.js'

export function w(path: string, content: string): void {
  mkdirSync(dirname(path), { recursive: true })
  writeFileSync(path, content, 'utf8')
}

function node(root: string, level: 'application' | 'module' | 'section' | 'resource', path: string[], label: string, extraIndex = '', contexte = 'Contexte suffisamment long pour ne pas être un stub : qui, quoi, limites — trois phrases au moins pour passer la barre des cent vingt caractères.'): string {
  const dir = join(root, ...path)
  const code = path[path.length - 1]!
  const children = ''
  w(
    join(dir, 'index.md'),
    `<!-- ba:node kind=node level=${level} code=${code}${extraIndex} -->\n# ${code} — ${label}\n\n## Contexte\n${contexte}\n- **Sources** : SRC-001 §1\n\n## Hors-périmètre\n_Aucune exclusion connue à ce stade._\n\n## Enfants\n${children}`,
  )
  for (const d of placeholderDocs(level, code)) w(join(dir, d.file), d.content)
  return dir
}

function appendChild(indexPath: string, code: string, label: string): void {
  const { readFileSync } = require('node:fs') as typeof import('node:fs')
  const before = readFileSync(indexPath, 'utf8')
  writeFileSync(indexPath, before + `- [${code}](./${code}/index.md) — ${label}\n`, 'utf8')
}

export const PAGESPEC = (json: Record<string, unknown>): string => `# Page\n\n\`\`\`json\n${JSON.stringify(json, null, 2)}\n\`\`\`\n\nCorps humain.\n`

export function writeMenuFixture(root: string): void {
  w(join(root, 'index.md'), '<!-- ba:node kind=node level=project code=PROJECT -->\n# Demo\n\n## Contexte\nProjet de démonstration.\n\n## Hors-périmètre\n_Aucune exclusion connue à ce stade._\n\n## Enfants\n- [CRM](./CRM/index.md) — CRM\n- [ERP](./ERP/index.md) — ERP\n')

  // --- CRM ---------------------------------------------------------------------------
  node(root, 'application', ['CRM'], 'Gestion commerciale')
  appendChild(join(root, 'CRM', 'index.md'), 'PIPELINE', 'Pipeline')
  appendChild(join(root, 'CRM', 'index.md'), 'BILLING', 'Facturation')

  const pipeline = node(root, 'module', ['CRM', 'PIPELINE'], 'Pipeline', ' depends=ERP/REFERENCES')
  appendChild(join(pipeline, 'index.md'), 'clients', 'Clients')
  appendChild(join(pipeline, 'index.md'), 'devis', 'Devis')
  w(
    join(pipeline, 'rbac.md'),
    [
      '<!-- ba:rbac level=module code=PIPELINE -->',
      '# RBAC — CRM / PIPELINE',
      '',
      '| Acteur | Permission | Portée |',
      '|---|---|---|',
      '| BA-001-AC-001 (Commercial) | `pipeline.clients.read` | toutes |',
      '| BA-001-AC-001 (Commercial) | `pipeline.clients.vip.export` | toutes |',
      '| BA-001-AC-002 (Manager) | `pipeline.devis.approve` | équipe |',
      '',
      '<!-- ba:rbac-floor BEGIN -->',
      '| `crm.pipeline.clients.read` | floor |',
      '<!-- ba:rbac-floor END -->',
      '',
      '<!-- ba:rbac-derived-lookups BEGIN -->',
      '| BA-001-AC-002 | `crm.pipeline.clients.lookup` | derived |',
      '<!-- ba:rbac-derived-lookups END -->',
      '',
    ].join('\n'),
  )
  w(join(pipeline, 'entité.md'), '<!-- ba:entité level=module code=PIPELINE -->\n# Modèle — CRM / PIPELINE\n\n### ENT-001 — Client\n- **Relations** : Client *→1 Country — FK CountryId, scope cross-module (ERP/REFERENCES), onDelete restrict.\n')
  w(join(pipeline, 'use-case.md'), '<!-- ba:use-case level=module code=PIPELINE -->\n<!-- ba:rollup auto -->\n> Voir [clients](./clients/use-case.md), [devis](./devis/use-case.md)\n')
  w(join(pipeline, '.run-snapshot.json'), '{}\n')
  w(
    join(pipeline, 'pagespecs', 'Client.list.md'),
    PAGESPEC({
      screenCode: 'SCR-CRM-PIPELINE-CLIENTS-001',
      appCode: 'crm',
      module: 'pipeline',
      section: 'clients',
      entity: 'Client',
      view: 'list',
      permission: 'pipeline.clients.read',
      linkedUseCases: ['UC-CRM-PIPELINE-CLIENTS-001'],
      actions: [{ code: 'open', kind: 'navigate', targetRoute: 'routes.clients.detail(item.id)', permission: 'pipeline.clients.read' }],
    }),
  )
  w(
    join(pipeline, 'pagespecs', 'Devis.list.md'),
    PAGESPEC({
      screenCode: 'SCR-CRM-PIPELINE-DEVIS-001',
      appCode: 'crm',
      module: 'pipeline',
      section: 'devis',
      permission: 'pipeline.devis.read',
      relatedTabs: [{ key: 'clients', relatedModule: 'pipeline', relatedSection: 'clients', permission: 'pipeline.clients.read' }],
    }),
  )

  const clients = node(root, 'section', ['CRM', 'PIPELINE', 'clients'], 'Clients')
  appendChild(join(clients, 'index.md'), 'vip', 'VIP')
  w(
    join(clients, 'use-case.md'),
    [
      '<!-- ba:use-case level=section code=clients -->',
      '# Cas d\'usage — clients',
      '',
      '### UC-CRM-PIPELINE-CLIENTS-001 — Créer un client',
      '- **Acteur principal** : BA-001-AC-001',
      '- **Écrans liés** : SCR-CRM-PIPELINE-CLIENTS-001',
      '',
      '### UC-CRM-PIPELINE-CLIENTS-002 — Archiver un client',
      '- **Acteur principal** : BA-001-AC-002',
      '',
    ].join('\n'),
  )
  w(join(clients, 'screen.md'), '<!-- ba:screen level=section code=clients -->\n# Écrans — clients\n\n### SCR-CRM-PIPELINE-CLIENTS-001 — Liste des clients\n- **Cas d\'usage liés** : UC-CRM-PIPELINE-CLIENTS-001\n')
  node(root, 'resource', ['CRM', 'PIPELINE', 'clients', 'vip'], 'VIP', '', 'Clients VIP.')
  w(join(clients, 'vip', 'use-case.md'), '<!-- ba:use-case level=resource code=vip -->\n# Cas d\'usage — vip\n\n### UC-CRM-PIPELINE-CLIENTS-VIP-001 — Gérer un VIP\n- **Acteur principal** : BA-001-AC-001\n')

  const devis = node(root, 'section', ['CRM', 'PIPELINE', 'devis'], 'Devis')
  w(join(devis, 'use-case.md'), '<!-- ba:use-case level=section code=devis -->\n# Cas d\'usage — devis\n\n### UC-CRM-PIPELINE-DEVIS-001 — Émettre un devis\n- **Acteur principal** : BA-001-AC-001\n- **Cas d\'usage liés** : UC-CRM-PIPELINE-CLIENTS-001, UC-CRM-PIPELINE-CLIENTS-002\n')

  const billing = node(root, 'module', ['CRM', 'BILLING'], 'Facturation', ' depends=CRM/PIPELINE')
  w(
    join(billing, 'index.md'),
    (require('node:fs') as typeof import('node:fs')).readFileSync(join(billing, 'index.md'), 'utf8').replace('## Enfants\n', '## Dépendances\n- [PIPELINE](../PIPELINE/index.md) — factures liées aux clients\n\n## Enfants\n- [invoices](./invoices/index.md) — Factures\n'),
  )
  w(join(billing, 'entité.md'), '<!-- ba:entité level=module code=BILLING -->\n# Modèle — CRM / BILLING\n\n### ENT-001 — Invoice\n- **Relations** : Invoice *→1 Client — FK ClientId, scope cross-module (CRM/PIPELINE), onDelete restrict.\n')
  w(
    join(billing, 'pagespecs', 'Invoice.list.md'),
    PAGESPEC({
      screenCode: 'SCR-CRM-BILLING-INVOICES-001',
      appCode: 'crm',
      module: 'billing',
      section: 'invoices',
      permission: 'billing.invoices.read',
      filters: [{ field: 'clientId', fkTo: { entity: 'Client', app: 'crm', module: 'pipeline', navRoute: 'pipeline.clients', apiEndpoint: '/api/pipeline/clients/lookup' } }],
      relatedTabs: [{ key: 'clients', relatedModule: 'pipeline', relatedSection: 'clients', permission: 'pipeline.clients.read' }],
    }),
  )
  node(root, 'section', ['CRM', 'BILLING', 'invoices'], 'Factures')

  // --- ERP ---------------------------------------------------------------------------
  node(root, 'application', ['ERP'], 'ERP')
  appendChild(join(root, 'ERP', 'index.md'), 'REFERENCES', 'Référentiels')
  const refs = node(root, 'module', ['ERP', 'REFERENCES'], 'Référentiels')
  appendChild(join(refs, 'index.md'), 'rapports', 'Rapports')
  node(root, 'section', ['ERP', 'REFERENCES', 'rapports'], 'Rapports')
}