// ── Dispatch Settings — lecture/écriture du DocType Single ERPNext ───────────
import { BASE_URL } from 'src/config/erpnext'
import { getCSRF } from './auth'

const DOCTYPE = 'Dispatch Settings'
const NAME    = 'Dispatch Settings'

function isDocTypeError (body) {
  const s = JSON.stringify(body)
  return s.includes('dispatch_settings') || s.includes('DoesNotExist') || s.includes('No module named')
}

export async function fetchSettings () {
  const r = await fetch(`${BASE_URL}/api/resource/${DOCTYPE}/${NAME}`, {
    credentials: 'include',
  })
  if (!r.ok) {
    const body = await r.json().catch(() => ({}))
    if (r.status === 404 || isDocTypeError(body)) throw new Error('DOCTYPE_NOT_FOUND')
    throw new Error(`Erreur HTTP ${r.status}`)
  }
  const body = await r.json()
  // Frappe peut retourner 200 avec une exception dans le corps
  if (body.exc_type || body.exception) {
    if (isDocTypeError(body)) throw new Error('DOCTYPE_NOT_FOUND')
    throw new Error(body.exc_type || 'Erreur Frappe')
  }
  return body.data
}

export async function saveSettings (payload) {
  const csrf = await getCSRF()
  const r = await fetch(`${BASE_URL}/api/resource/${DOCTYPE}/${NAME}`, {
    method: 'PUT',
    credentials: 'include',
    headers: { 'Content-Type': 'application/json', 'X-Frappe-CSRF-Token': csrf || '' },
    body: JSON.stringify(payload),
  })
  const body = await r.json().catch(() => ({}))
  if (!r.ok || body.exc_type || body.exception) {
    if (isDocTypeError(body)) throw new Error('DOCTYPE_NOT_FOUND')
    throw new Error(body._error_message || body.exc_type || `Erreur HTTP ${r.status}`)
  }
  return body
}

// ── Création du DocType via API (bouton Initialiser dans l'admin) ─────────────
const DOCTYPE_FIELDS = [
  { fieldname: 'erp_section',          fieldtype: 'Section Break', label: 'ERPNext / Frappe' },
  { fieldname: 'erp_url',              fieldtype: 'Data',     label: 'URL du serveur',       default: 'http://localhost:8080' },
  { fieldname: 'erp_api_key',          fieldtype: 'Data',     label: 'API Key' },
  { fieldname: 'erp_api_secret',       fieldtype: 'Password', label: 'API Secret' },
  { fieldname: 'mapbox_section',       fieldtype: 'Section Break', label: 'Mapbox' },
  { fieldname: 'mapbox_token',         fieldtype: 'Data',     label: 'Token public (pk_)' },
  { fieldname: 'twilio_section',       fieldtype: 'Section Break', label: 'Twilio — SMS' },
  { fieldname: 'twilio_account_sid',   fieldtype: 'Data',     label: 'Account SID' },
  { fieldname: 'twilio_auth_token',    fieldtype: 'Password', label: 'Auth Token' },
  { fieldname: 'twilio_from_number',   fieldtype: 'Data',     label: 'Numéro expéditeur' },
  { fieldname: 'stripe_section',       fieldtype: 'Section Break', label: 'Stripe — Paiements' },
  { fieldname: 'stripe_mode',          fieldtype: 'Select',   label: 'Mode', options: 'test\nlive', default: 'test' },
  { fieldname: 'stripe_publishable_key', fieldtype: 'Data',   label: 'Clé publique (pk_)' },
  { fieldname: 'stripe_secret_key',    fieldtype: 'Password', label: 'Clé secrète (sk_)' },
  { fieldname: 'stripe_webhook_secret',fieldtype: 'Password', label: 'Webhook Secret (whsec_)' },
  { fieldname: 'n8n_section',          fieldtype: 'Section Break', label: 'n8n — Automatisation' },
  { fieldname: 'n8n_url',              fieldtype: 'Data',     label: 'URL n8n',         default: 'http://localhost:5678' },
  { fieldname: 'n8n_api_key',          fieldtype: 'Password', label: 'API Key n8n' },
  { fieldname: 'n8n_webhook_base',     fieldtype: 'Data',     label: 'Base URL webhooks', default: 'http://localhost:5678/webhook' },
  { fieldname: 'sms_section',          fieldtype: 'Section Break', label: 'Templates SMS' },
  { fieldname: 'sms_enroute',          fieldtype: 'Text',     label: 'Technicien en route',
    default: 'Bonjour {client_name}, votre technicien {tech_name} est en route et arrivera dans environ {eta} minutes. Réf: {job_id}' },
  { fieldname: 'sms_completed',        fieldtype: 'Text',     label: 'Service complété',
    default: 'Bonjour {client_name}, votre service ({job_id}) a été complété avec succès. Merci de votre confiance !' },
  { fieldname: 'sms_assigned',         fieldtype: 'Text',     label: 'Job assigné (technicien)',
    default: 'Nouveau job assigné : {job_id} — {client_name}, {address}. Durée estimée : {duration}h.' },
]

export async function createDocType () {
  const csrf = await getCSRF()
  const r = await fetch(`${BASE_URL}/api/resource/DocType`, {
    method: 'POST',
    credentials: 'include',
    headers: { 'Content-Type': 'application/json', 'X-Frappe-CSRF-Token': csrf || '' },
    body: JSON.stringify({
      name: DOCTYPE, module: 'Core', custom: 1, is_single: 1, track_changes: 0,
      fields: DOCTYPE_FIELDS,
      permissions: [
        { role: 'System Manager', read: 1, write: 1, create: 1 },
        { role: 'Administrator',  read: 1, write: 1, create: 1 },
      ],
    }),
  })
  const body = await r.json().catch(() => ({}))
  if (!r.ok || body.exc_type) {
    throw new Error(body._error_message || body.exc_type || `Erreur HTTP ${r.status}`)
  }
  return body
}