'use strict'
// ─────────────────────────────────────────────────────────────────────────────
// Install chain templates for Service Contracts.
//
// Each template is an ordered array of steps. Steps chain via `depends_on_step`
// (index into the same array, or null for "run as soon as chain starts").
// `null` → the step is born "open" immediately; otherwise born "On Hold"
// until the parent step completes (see dispatch.unblockDependents).
//
// Multiple steps with depends_on_step=null run in PARALLEL (tech sees both
// at once, either can be completed first). Likewise multiple steps pointing
// at the same parent run in parallel after the parent. The terminal-node
// detector (_isChainTerminal) only fires when ALL siblings are Completed.
// ─────────────────────────────────────────────────────────────────────────────

const TEMPLATES = {
  // ── Production templates ────────────────────────────────────────────────
  fiber_install: [
    { subject: 'Vérification pré-installation (éligibilité & OLT)', job_type: 'Autre',        priority: 'medium', duration_h: 0.5, assigned_group: 'Admin',       depends_on_step: null },
    { subject: 'Installation fibre chez le client',                 job_type: 'Installation', priority: 'high',   duration_h: 3,   assigned_group: 'Tech Targo', depends_on_step: 0 },
    { subject: 'Activation du service & configuration ONT',         job_type: 'Installation', priority: 'high',   duration_h: 0.5, assigned_group: 'Admin',       depends_on_step: 1 },
    { subject: 'Test de débit & validation client',                 job_type: 'Dépannage',    priority: 'medium', duration_h: 0.5, assigned_group: 'Tech Targo', depends_on_step: 2 },
  ],
  phone_service: [
    { subject: 'Importer le numéro de téléphone',              job_type: 'Autre',        priority: 'medium', duration_h: 0.5, assigned_group: 'Admin',       depends_on_step: null },
    { subject: 'Installation fibre (pré-requis portage)',      job_type: 'Installation', priority: 'high',   duration_h: 2,   assigned_group: 'Tech Targo', depends_on_step: 0 },
    { subject: 'Portage du numéro vers Gigafibre',             job_type: 'Autre',        priority: 'medium', duration_h: 0.5, assigned_group: 'Admin',       depends_on_step: 1 },
    { subject: 'Validation et test du service téléphonique',   job_type: 'Dépannage',    priority: 'medium', duration_h: 0.5, assigned_group: 'Tech Targo', depends_on_step: 2 },
  ],
  move_service: [
    { subject: 'Préparation déménagement (vérifier éligibilité nouveau site)', job_type: 'Autre',        priority: 'medium', duration_h: 0.5, assigned_group: 'Admin',       depends_on_step: null },
    { subject: 'Retrait équipement ancien site',                               job_type: 'Retrait',      priority: 'medium', duration_h: 1,   assigned_group: 'Tech Targo', depends_on_step: 0 },
    { subject: 'Installation au nouveau site',                                 job_type: 'Installation', priority: 'high',   duration_h: 3,   assigned_group: 'Tech Targo', depends_on_step: 1 },
    { subject: 'Transfert abonnement & mise à jour adresse',                   job_type: 'Autre',        priority: 'medium', duration_h: 0.5, assigned_group: 'Admin',       depends_on_step: 2 },
  ],
  repair_service: [
    { subject: 'Diagnostic à distance',   job_type: 'Dépannage',   priority: 'high',   duration_h: 0.5, assigned_group: 'Admin',       depends_on_step: null },
    { subject: 'Intervention terrain',    job_type: 'Réparation',  priority: 'high',   duration_h: 2,   assigned_group: 'Tech Targo', depends_on_step: 0 },
    { subject: 'Validation & suivi client', job_type: 'Dépannage', priority: 'medium', duration_h: 0.5, assigned_group: 'Admin',       depends_on_step: 1 },
  ],

  // ── Test templates ──────────────────────────────────────────────────────
  // For end-to-end testing the contract → chain → activation → invoice
  // lifecycle without running through a 4-step production chain.

  // One-step: tech completes one job, subscription activates immediately.
  // Fastest path to verify the full lifecycle.
  test_single: [
    { subject: 'Test — Activation immédiate', job_type: 'Installation', priority: 'medium', duration_h: 0.25, assigned_group: 'Admin', depends_on_step: null },
  ],

  // Three steps with a parallel middle: step 0 → (step 1 ∥ step 2).
  // Both middle jobs are born "open" after step 0 completes (same depends_on).
  // Tech picks either one first; subscription activates when BOTH are Completed.
  // Exercises _isChainTerminal's sibling-completion check.
  test_parallel: [
    { subject: 'Test — Étape initiale',       job_type: 'Autre',        priority: 'medium', duration_h: 0.25, assigned_group: 'Admin', depends_on_step: null },
    { subject: 'Test — Branche A (parallèle)', job_type: 'Installation', priority: 'medium', duration_h: 0.25, assigned_group: 'Admin', depends_on_step: 0 },
    { subject: 'Test — Branche B (parallèle)', job_type: 'Installation', priority: 'medium', duration_h: 0.25, assigned_group: 'Admin', depends_on_step: 0 },
  ],
}

// Pick a template by explicit id, then by contract_type mapping, else fall back
// to the universal fiber_install safety net.
//
//   chooseTemplate({ install_template: 'test_single' })      → test_single
//   chooseTemplate({ contract_type: 'Résidentiel' })        → fiber_install
//   chooseTemplate({ contract_type: 'Test-Simple' })        → test_single
//   chooseTemplate({ contract_type: 'Test-Parallèle' })     → test_parallel
//   chooseTemplate({})                                      → fiber_install
function chooseTemplate (contract = {}) {
  const explicit = contract.install_template
  if (explicit && TEMPLATES[explicit]) return explicit

  const byType = {
    'Résidentiel':      'fiber_install',
    'Commercial':       'fiber_install',
    'Déménagement':     'move_service',
    'Téléphonie':       'phone_service',
    'Réparation':       'repair_service',
    'Test-Simple':      'test_single',
    'Test-Parallèle':   'test_parallel',
    'Test-Parallele':   'test_parallel', // tolerate missing accent
  }
  const mapped = byType[contract.contract_type]
  return mapped || 'fiber_install'
}

function getTemplateSteps (templateId) {
  return TEMPLATES[templateId] || []
}

module.exports = { TEMPLATES, getTemplateSteps, chooseTemplate }