import Foundation

@MainActor
protocol LeadDetailRepository {
    func detail(id: String, salesCode: String) async throws -> LeadDetail
    func file(_ reference: LeadFileReference, leadID: String, salesCode: String) async throws -> URL
}

struct GetLeadDetailUseCase {
    let repository: any LeadDetailRepository

    func execute(id: String, salesCode: String) async throws -> LeadDetail {
        try await repository.detail(id: id, salesCode: salesCode)
    }
}

struct DownloadLeadDocumentUseCase {
    let repository: any LeadDetailRepository

    func execute(_ document: LeadDocument, leadID: String, salesCode: String) async throws -> URL {
        guard document.file.kind == .pdf else { throw LeadFileError.invalidFile }
        return try await repository.file(document.file, leadID: leadID, salesCode: salesCode)
    }
}

struct LoadLeadPhotoUseCase {
    let repository: any LeadDetailRepository

    func execute(_ photo: LeadPhoto, original: Bool = false,
                 leadID: String, salesCode: String) async throws -> URL {
        try await repository.file(original ? photo.original : photo.thumbnail,
                                  leadID: leadID, salesCode: salesCode)
    }
}