/**
 * 地磅模块 API（直出 JSON，对齐原 dibang；路径 /plans /weighing /inventory /dashboard）
 */
import { request, parseResponseJson } from '@/utils/request'

function extractError(body) {
  if (!body || typeof body !== 'object') return '请求失败'
  const detail = body.detail
  if (typeof detail === 'string') return detail
  if (Array.isArray(detail)) {
    return detail.map((x) => x?.msg || x?.message || '').filter(Boolean).join('；') || '请求失败'
  }
  return body.msg || body.message || '请求失败'
}

function unwrap(res) {
  if (res.statusCode === 204) return null
  if (res.statusCode >= 400) {
    throw new Error(extractError(parseResponseJson(res)))
  }
  const body = parseResponseJson(res)
  if (body == null) return body
  if (Array.isArray(body)) return body
  if (typeof body === 'object' && body.code != null) {
    if (body.code !== 200 && body.code !== 0) {
      throw new Error(body.message || body.msg || '请求失败')
    }
    return body.data != null ? body.data : body
  }
  return body
}

async function get(url, params = {}) {
  const res = await request({ url, method: 'GET', data: params, params })
  return unwrap(res)
}

async function post(url, data = {}) {
  const res = await request({ url, method: 'POST', data })
  return unwrap(res)
}

async function patch(url, data = {}) {
  const res = await request({ url, method: 'PATCH', data })
  return unwrap(res)
}

function asList(data) {
  return Array.isArray(data) ? data : []
}

/** 集合根须带尾斜杠，避免 307 丢 Authorization */
function root(path) {
  return path.endsWith('/') ? path : `${path}/`
}

// ── 仪表盘 ──

export async function getDashboardStats() {
  return (await get('/dashboard/stats')) || {}
}

export async function getInboundByCargo() {
  return asList(await get('/dashboard/inbound/by-cargo'))
}

export async function getOutboundByCargo() {
  return asList(await get('/dashboard/outbound/by-cargo'))
}

// ── 计划 ──

export async function listPlans(params = {}) {
  return asList(await get(root('/plans'), params))
}

export async function getPlan(id) {
  return get(`/plans/${String(id)}`)
}

export async function getPlanRelated(id) {
  return (await get(`/plans/${String(id)}/related`)) || { inventories: [], weighings: [] }
}

// ── 地磅单 ──

export async function listWeighing(params = {}) {
  return asList(await get(root('/weighing'), params))
}

export async function getWeighing(id) {
  return get(`/weighing/${String(id)}`)
}

export async function getWeighingRelated(id) {
  return (await get(`/weighing/${String(id)}/related`)) || { plan: null, inventory: null }
}

export function updateWeighing(id, data) {
  return patch(`/weighing/${String(id)}`, data)
}

export function voidWeighing(id) {
  return post(`/weighing/${String(id)}/void`, {})
}

// ── 出入库 ──

export async function listInventory(params = {}) {
  return asList(await get(root('/inventory'), params))
}

export async function getInventory(id) {
  return get(`/inventory/${String(id)}`)
}

export async function getInventoryRelated(id) {
  return (await get(`/inventory/${String(id)}/related`)) || { plan: null, weighing: null }
}

export function createInventoryLinkForPlan(purchasePlanId, remarks) {
  return post('/inventory/create-link-for-plan', {
    purchasePlanId: String(purchasePlanId),
    remarks
  })
}