import Foundation

@main
struct AdminAttachmentsTests {
    static func main() throws {
        let first = #"{"id":"one","name":"first.pdf","kind":"invoice","mime":"application/pdf","size":10}"#
        let second = #"{"id":"two","name":"second.pdf","kind":"invoice","mime":"application/pdf","size":20}"#
        let decoder = JSONDecoder()
        let legacy = try decoder.decode(AdminAttachmentList.self, from: Data(first.utf8))
        precondition(legacy.files.count == 1 && legacy.files[0].id == "one")
        let multiple = try decoder.decode(AdminAttachmentList.self, from: Data("[\(first),\(second)]".utf8))
        precondition(multiple.files.map(\.id) == ["one", "two"])
        let roundTrip = try decoder.decode(AdminAttachmentList.self, from: JSONEncoder().encode(multiple))
        precondition(roundTrip.files.map(\.id) == ["one", "two"])
        let empty = try decoder.decode(AdminAttachmentList.self, from: Data("[]".utf8))
        precondition(empty.files.isEmpty)
        let mixed = try decoder.decode([String: AdminAttachmentList].self, from: Data("{\"invoice\":[\(first),\(second)],\"legacy\":\(first)}".utf8))
        precondition(mixed.values.flatMap { $0.files }.count == 3)
        print("Admin attachment compatibility tests passed")
    }
}