// ── ERPNext Dispatch resource calls ─────────────────────────────────────────
// All ERPNext fetch() calls live here.
// Swap BASE_URL in config/erpnext.js to change the target server.
// ─────────────────────────────────────────────────────────────────────────────
import { BASE_URL } from 'src/config/erpnext'
import { authFetch } from './auth'

async function apiGet (path) {
  const res = await authFetch(BASE_URL + path)
  const data = await res.json()
  if (data.exc) throw new Error(data.exc)
  return data
}

async function apiPut (doctype, name, body) {
  const res = await authFetch(
    `${BASE_URL}/api/resource/${encodeURIComponent(doctype)}/${encodeURIComponent(name)}`,
    {
      method: 'PUT',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(body),
    },
  )
  if (!res.ok) console.error(`[API] PUT ${doctype}/${name} failed:`, res.status, await res.text().catch(() => ''))
  const data = await res.json()
  if (data.exc) throw new Error(data.exc)
  return data
}

export async function fetchTechnicians () {
  const list = await apiGet('/api/resource/Dispatch%20Technician?fields=["name"]&limit=100')
  const names = (list.data || []).map(t => t.name)
  if (!names.length) return []
  const docs = await Promise.all(
    names.map(n => apiGet(`/api/resource/Dispatch%20Technician/${encodeURIComponent(n)}`).then(d => d.data))
  )
  return docs
}

// Fetch all jobs with child tables (assistants)
export async function fetchJobs (filters = null) {
  // Step 1: get job names from list endpoint
  let url = '/api/resource/Dispatch%20Job?fields=["name"]&limit=200'
  if (filters) url += '&filters=' + encodeURIComponent(JSON.stringify(filters))
  const list = await apiGet(url)
  const names = (list.data || []).map(j => j.name)
  if (!names.length) return []
  // Step 2: fetch each doc individually (includes child tables)
  const docs = await Promise.all(
    names.map(n => apiGet(`/api/resource/Dispatch%20Job/${encodeURIComponent(n)}`).then(d => d.data))
  )
  return docs
}

export async function updateJob (name, payload) {
  return apiPut('Dispatch Job', name, payload)
}

export async function createJob (payload) {
  const res = await authFetch(
    `${BASE_URL}/api/resource/Dispatch%20Job`,
    {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(payload),
    },
  )
  const data = await res.json()
  if (data.exc) throw new Error(data.exc)
  return data.data
}

export async function updateTech (name, payload) {
  return apiPut('Dispatch Technician', name, payload)
}

export async function createTech (payload) {
  const res = await authFetch(
    `${BASE_URL}/api/resource/Dispatch%20Technician`,
    { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(payload) },
  )
  const data = await res.json()
  if (data.exc) throw new Error(data.exc)
  return data.data
}

export async function deleteTech (name) {
  const res = await authFetch(
    `${BASE_URL}/api/resource/Dispatch%20Technician/${encodeURIComponent(name)}`,
    { method: 'DELETE' },
  )
  if (!res.ok) {
    const data = await res.json().catch(() => ({}))
    const msg = data._server_messages ? JSON.parse(JSON.parse(data._server_messages)[0]).message : data.exception || 'Delete failed'
    throw new Error(msg)
  }
}

export async function fetchTags () {
  const data = await apiGet('/api/resource/Dispatch%20Tag?fields=["name","label","color","category"]&limit=200')
  return data.data || []
}

export async function createTag (label, category = 'Custom', color = '#6b7280') {
  const res = await authFetch(
    `${BASE_URL}/api/resource/Dispatch%20Tag`,
    {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ label, category, color }),
    },
  )
  const data = await res.json()
  if (data.exc) throw new Error(data.exc)
  return data.data
}