Multipart Form Data POST with spesific JSON Requirement - swift

Question

I'm new to Alamofire and now using Alamofire 5. I want to create a POST request with multipart form data, but there's a specific requirement for the JSON body. Here it is:
"item": [
{
"name": "Upload image",
"request": {
"method": "POST",
"header": [],
"body": {
"mode": "formdata",
"formdata": [
{
"key": "files[]",
"type": "file",
"src": []
},
{
"key": "mode",
"value": "public",
"type": "text"
}
]
},
"url": {
"raw": "https://jsonplaceholder.typicode.com/api/image/upload",
"protocol": "https",
"host": [
"jsonplaceholder",
"typicode",
"com"
],
"path": [
"api",
"image",
"upload"
]
}
},
"response": []
},
]
Anyone can help me how to post the data but with multipart form data? Please help.
(It's okay if the POST request is using URLSession)

Answer 1

Whatever I understand from your question and comments, I have created a method from your previous question.
func postImage(images: [UIImage],imgName : [String]) {
var arrFormData = [[String:Any]]()
var imgDataArray: [Data] = []
for image in images {
guard let imgData = image.jpegData(compressionQuality: 0.50) else { return }
imgDataArray.append(imgData)
}
let param1: [String: Any] = [
"key":"files[]",
"type": "file",
"src": imgName
]
let param2: [String: Any] = [
"key": "mode",
"value": "public",
"type": "text"
]
var arrParam = [[String:Any]]()
arrParam.append(param1)
arrParam.append(param2)
arrFormData.append(contentsOf: arrParam)
var param : [String:Any] = [:]
if let theJSONData = try? JSONSerialization.data(
withJSONObject: arrFormData,
options: []) {
let theJSONText = String(data: theJSONData,
encoding: .ascii)
print("JSON string = \(theJSONText!)")
param = ["formData" : theJSONText ?? ""]
}
print(param)
Alamofire.upload(multipartFormData: {
multipartFormData in
for i in 0..<images.count{
if let imageData = images[i].jpegData(compressionQuality: 0.6) {
multipartFormData.append(imageData, withName: "file", fileName: "name.png", mimeType: "image/png")
}
}
for (key, value) in param {
multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
}
}, usingThreshold: 10 * 1024 * 1024,to: apiurl, method: .post, headers: headers, encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
upload.responseJSON {
response in
print(response.result)
}
case .failure(let encodingError):
print(encodingError)
}
})
}