Swift
Swift
Generate an E-way Bill
See more HTTP Misc Examples
Demonstrates how to send an HTTP POST request to generate an e-way bill.Chilkat Swift Downloads
func chilkatTest() {
var success: Bool = false
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example uses the previously obtained access token that was retrieved
// in this example: Get EWAY Auth Token using Gstin, username, password, and app_key
let jsonAuth = CkoJsonObject()!
success = jsonAuth.loadFile(path: "qa_data/tokens/ewayAuth.json")
if success == false {
print("\(jsonAuth.lastErrorText!)")
return
}
// The jsonAuth contains something like this:
// {
// "authToken": "IBTeFtxNfVurg71LTzZ2r0xK7",
// "decryptedSek": "5g1TyTie7yoslU3DrbYATa7mWyPazlODE7cEh5Vy4Ho="
// }
// Generate the JSON data for the e-way bill.
// The following code can be generated by pasting representative JSON into this online tool:
// Generate JSON Code
let jsonData = CkoJsonObject()!
jsonData.updateString(jsonPath: "supplyType", value: "O")
jsonData.updateString(jsonPath: "subSupplyType", value: "1")
jsonData.updateString(jsonPath: "docType", value: "INV")
jsonData.updateString(jsonPath: "docNo", value: "AW1234-2")
jsonData.updateString(jsonPath: "docDate", value: "05/04/2018")
jsonData.updateString(jsonPath: "fromGstin", value: "09ABDC24212B1FK")
jsonData.updateString(jsonPath: "fromTrdName", value: "willy")
jsonData.updateString(jsonPath: "fromAddr1", value: "3RD CROSS NO 200 19 A")
jsonData.updateString(jsonPath: "fromAddr2", value: "GROUND FLOOR OZZY ROAD")
jsonData.updateString(jsonPath: "fromPlace", value: "BUSY TOWN")
jsonData.updateNumber(jsonPath: "fromPincode", numericStr: "640033")
jsonData.updateNumber(jsonPath: "actFromStateCode", numericStr: "05")
jsonData.updateNumber(jsonPath: "fromStateCode", numericStr: "05")
jsonData.updateString(jsonPath: "toGstin", value: "01AAAASCC10BBBB")
jsonData.updateString(jsonPath: "toTrdName", value: "mthustra")
jsonData.updateString(jsonPath: "toAddr1", value: "Shrek Ogre")
jsonData.updateString(jsonPath: "toAddr2", value: "Basadronsil")
jsonData.updateString(jsonPath: "toPlace", value: "Grifl Blagar")
jsonData.updateNumber(jsonPath: "toPincode", numericStr: "699988")
jsonData.updateNumber(jsonPath: "actToStateCode", numericStr: "29")
jsonData.updateNumber(jsonPath: "toStateCode", numericStr: "02")
jsonData.updateNumber(jsonPath: "totalValue", numericStr: "5609889")
jsonData.updateNumber(jsonPath: "cgstValue", numericStr: "0")
jsonData.updateNumber(jsonPath: "sgstValue", numericStr: "0")
jsonData.updateNumber(jsonPath: "igstValue", numericStr: "168296.67")
jsonData.updateNumber(jsonPath: "cessValue", numericStr: "224395.56")
jsonData.updateString(jsonPath: "transporterId", value: "09ABDC24212B1FK")
jsonData.updateString(jsonPath: "transporterName", value: "")
jsonData.updateString(jsonPath: "transDocNo", value: "12332")
jsonData.updateNumber(jsonPath: "transMode", numericStr: "1")
jsonData.updateString(jsonPath: "transDistance", value: "656")
jsonData.updateString(jsonPath: "transDocDate", value: "10/04/2018")
jsonData.updateString(jsonPath: "vehicleNo", value: "PBN4567")
jsonData.updateString(jsonPath: "vehicleType", value: "R")
jsonData.i = 0
jsonData.updateString(jsonPath: "itemList[i].productName", value: "Wheat")
jsonData.updateString(jsonPath: "itemList[i].productDesc", value: "Wheat")
jsonData.updateNumber(jsonPath: "itemList[i].hsnCode", numericStr: "1001")
jsonData.updateNumber(jsonPath: "itemList[i].quantity", numericStr: "4")
jsonData.updateString(jsonPath: "itemList[i].qtyUnit", value: "BOX")
jsonData.updateNumber(jsonPath: "itemList[i].cgstRate", numericStr: "0")
jsonData.updateNumber(jsonPath: "itemList[i].sgstRate", numericStr: "0")
jsonData.updateNumber(jsonPath: "itemList[i].igstRate", numericStr: "3")
jsonData.updateNumber(jsonPath: "itemList[i].cessRate", numericStr: "4")
jsonData.updateNumber(jsonPath: "itemList[i].cessAdvol", numericStr: "0")
jsonData.updateNumber(jsonPath: "itemList[i].taxableAmount", numericStr: "5609889")
// The body of the HTTP POST will contain JSON that looks like this:
// {
// "action":"GENEWAYBILL",
// "data": " iJiJGXq ... oUZp/25Y "
// }
// The "data" is the encrypted jsonData using our previously agreed-upon symmetric encryption key.
// Let's begin build the JSON request body..
let jsonRequestBody = CkoJsonObject()!
jsonRequestBody.updateString(jsonPath: "action", value: "GENEWAYBILL")
// Setup the encryptor using the decryptedSek from the jsonAuth
let crypt = CkoCrypt2()!
crypt.cryptAlgorithm = "aes"
crypt.cipherMode = "ecb"
crypt.keyLength = 256
crypt.setEncodedKey(keyStr: jsonAuth.string(of: "decryptedSek"), encoding: "base64")
crypt.encodingMode = "base64"
// Encrypt the jsonData and add it to our JSON request body
jsonRequestBody.updateString(jsonPath: "data", value: crypt.encryptStringENC(str: jsonData.emit()))
let http = CkoHttp()!
// Add the authtoken to the request header.
// Be careful to be precise with uppercase/lowercase ("authtoken" vs "authToken")
http.setRequestHeader(name: "authtoken", value: jsonAuth.string(of: "authToken"))
http.setRequestHeader(name: "Gstin", value: "09ABDC24212B1FK")
http.accept = "application/json"
// POST the request to generate an e-way bill:
let resp = CkoHttpResponse()!
success = http.httpJson(verb: "POST", url: "http://ewb.wepgst.com/api/EWayBill", json: jsonRequestBody, contentType: "application/json", response: resp)
if success == false {
print("\(http.lastErrorText!)")
return
}
var respStatusCode: Int = resp.statusCode.intValue
print("response status code =\(respStatusCode)")
print("response body:")
print("\(resp.bodyStr!)")
if respStatusCode != 200 {
print("Failed in some unknown way.")
return
}
// When the response status code = 200, we'll have either
// success response like this:
// {"status":"1","data":"..."}
//
// or a failed response like this:
//
// {"status":"0","error":"eyJlcnJvckNvZGVzIjoiMTA4In0="}
// Load the response body into a JSON object.
let json = CkoJsonObject()!
json.load(json: resp.bodyStr)
var status: Int = json.int(of: "status").intValue
print("status = \(status)")
if status != 1 {
// Failed. Base64 decode the error
// {"status":"0","error":"eyJlcnJvckNvZGVzIjoiMTA4In0="}
// For an invalid password, the error is: {"errorCodes":"108"}
let sbError = CkoStringBuilder()!
json.string(ofSb: "error", sb: sbError)
sbError.decode(encoding: "base64", charset: "utf-8")
print("error: \(sbError.getAsString()!)")
return
}
json.emitCompact = false
print("JSON response:")
print("\(json.emit()!)")
let bdData = CkoBinData()!
bdData.appendEncoded(encData: json.string(of: "data"), encoding: "base64")
crypt.decryptBd(bd: bdData)
// Decrypts to
// {"ewayBillNo":331001121234,"ewayBillDate":"24/05/2018 04:38:00 PM","validUpto":"31/05/2018 11:59:00 PM"}
let jsonBill = CkoJsonObject()!
jsonBill.load(json: bdData.getString(charset: "utf-8"))
var ewayBillNo: Int = jsonBill.int(of: "ewayBillNo").intValue
print("ewayBillNo = \(ewayBillNo)")
var ewayBillDate: String? = jsonBill.string(of: "ewayBillDate")
print("ewayBillDate = \(ewayBillDate!)")
var validUpto: String? = jsonBill.string(of: "validUpto")
print("validUpto = \(validUpto!)")
// Sample output:
// ewayBillNo = 331001121234
// ewayBillDate = 24/05/2018 04:55:00 PM
// validUpto = 31/05/2018 11:59:00 PM
}