import request from '@/utils/http'

function normalizeText(value) {
  return typeof value === 'string' ? value.trim() : value
}

function normalizeIds(ids) {
  if (Array.isArray(ids)) {
    return ids
      .map((id) => String(id).trim())
      .filter(Boolean)
      .join(',')
  }
  if (ids === null || ids === undefined) {
    return ''
  }
  return String(ids).trim()
}

function filterParams(params = {}, ignoredKeys = []) {
  return Object.fromEntries(
    Object.entries(params)
      .filter(([key, value]) => {
        if (ignoredKeys.includes(key)) return false
        if (value === undefined || value === null) return false
        if (typeof value === 'string' && value.trim() === '') return false
        return true
      })
      .map(([key, value]) => [key, normalizeText(value)])
  )
}

export function buildPurchasePageParams(params = {}) {
  return {
    current: params.current || 1,
    pageSize: params.pageSize || params.size || 20,
    ...filterParams(params, ['current', 'pageSize', 'size'])
  }
}

export function buildPurchaseItemPageParams(params = {}) {
  return {
    current: params.current || 1,
    pageSize: params.pageSize || params.size || 20,
    ...filterParams(params, ['current', 'pageSize', 'size'])
  }
}

export function fetchPurchasePage(params = {}) {
  return request.post({
    url: '/purchase/page',
    params: buildPurchasePageParams(params)
  })
}

export function fetchPurchaseList() {
  return request.post({
    url: '/purchase/list',
    data: {}
  })
}

export function fetchPurchaseMany(ids) {
  return request.post({
    url: `/purchase/many/${normalizeIds(ids)}`
  })
}

export function fetchPurchaseDetail(id) {
  return request.get({
    url: `/purchase/${id}`
  })
}

export function fetchSavePurchase(params = {}) {
  return request.post({
    url: '/purchase/save',
    params
  })
}

export function fetchUpdatePurchase(params = {}) {
  return request.post({
    url: '/purchase/update',
    params
  })
}

export function fetchDeletePurchase(ids) {
  return request.post({
    url: `/purchase/remove/${normalizeIds(ids)}`
  })
}

export function fetchPurchaseQuery(condition = '') {
  return request.post({
    url: '/purchase/query',
    params: { condition: normalizeText(condition) }
  })
}

export function fetchPurchaseItemPage(params = {}) {
  return request.post({
    url: '/purchaseItem/page',
    params: buildPurchaseItemPageParams(params)
  })
}

export async function fetchExportPurchaseReport(payload = {}, options = {}) {
  return fetch(`${import.meta.env.VITE_API_URL}/purchase/export`, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      ...(options.headers || {})
    },
    body: JSON.stringify(payload)
  })
}