somewhere

server/plugins/asanServiceSerialChecker.js

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+const fs = require('fs')
+const readXlsxFile = require('read-excel-file/node')
+
+const guaranteeSerialsPath = './static/uploads/serials'
+const productSerialsPath = './static/uploads/serials_products'
+
+const serialChecker = async (serial, type = 'guaranteeSerial') => {
+  let exelsPath
+  if (type === 'guaranteeSerial') exelsPath = guaranteeSerialsPath
+  if (type === 'orginality') exelsPath = productSerialsPath
+
+  const lowerSerial = serial.toLowerCase()
+  // a promise to lowercase items and filter null or DateObjects
+  const toLowerCaseArray = array => {
+    return new Promise((resolve, reject) => {
+      const newArray = []
+      array.forEach((item, index) => {
+        if (item !== null && typeof item === 'string') newArray.push(item.toLowerCase())
+        if (item !== null && typeof item === 'number') newArray.push(item.toString())
+        if (index === array.length - 1) return resolve(newArray)
+      })
+    })
+  }
+
+  // create an array of all exel files data
+  const exelFilesData = []
+  try {
+    // get a list of all exel files
+    const serialFiles = await fs.readdirSync(exelsPath)
+
+    // push each exel file data to exelFilesData array
+    let n0 = 0
+    for await (const file of serialFiles) {
+      // reading all exel files one by one
+      const exelFile = await readXlsxFile(`${exelsPath}/${file}`)
+      exelFilesData.push(exelFile)
+
+      // flat exelFilesData and filter and lowerCase it's items
+      if (n0 === serialFiles.length - 1) {
+        const flattedArray = exelFilesData.flat(10000)
+        const lowerCaseFlattedArray = await toLowerCaseArray(flattedArray)
+
+        // loop throw lowerCased items to find exact match item
+        let n1 = 0
+        for await (const item of lowerCaseFlattedArray) {
+          if (item === lowerSerial) return true
+          if (n1 === lowerCaseFlattedArray.length - 1) return false
+          n1++
+        }
+      }
+      n0++
+    }
+  } catch (e) {
+    throw new Error(e)
+  }
+}
+
+module.exports.serialChecker = serialChecker