How do I validate payloads against a schema using Property Lists with Swift?

In Swift, you can validate payloads against a schema defined in Property Lists (plist). Property Lists are a convenient way to store structured data, and you can utilize them to define your validation rules for incoming payloads. Below is an example showing how to validate and handle payloads using a plist schema.

// Example payload let payload: [String: Any] = [ "name": "John Doe", "age": 30, "email": "john.doe@example.com" ] // Load the schema from a plist file guard let schemaUrl = Bundle.main.url(forResource: "Schema", withExtension: "plist"), let schemaData = try? Data(contentsOf: schemaUrl), let schema = try? PropertyListSerialization.propertyList(from: schemaData, options: [], format: nil) as? [String: Any] else { print("Unable to load schema") return } // Validate the payload for (key, value) in schema { if let expectedType = value as? String { if let payloadValue = payload[key] { switch expectedType { case "String": if !(payloadValue is String) { print("\(key) should be a String") } case "Int": if !(payloadValue is Int) { print("\(key) should be an Int") } // Additional types can be validated here default: print("Unknown type for \(key)") } } else { print("\(key) is missing in the payload") } } }

Swift Property Lists schema validation payload validation plist

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