// --------------------------------------------------------------------------
//
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// The MIT License (MIT)
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import Foundation

protocol RetryStage: PipelineStage {}

public class RetryPolicy: RetryStage {
    // MARK: Properties

    public var next: PipelineStage?

    // MARK: Initializers

    public init() {}

    // MARK: PipelineStage Methods

    public func on(request: PipelineRequest, completionHandler: @escaping OnRequestCompletionHandler) {
        // TODO: Preserve the pipeline request at this stage of the pipeline in case it must be reused for retry
        completionHandler(request, nil)
    }

    public func on(response: PipelineResponse, completionHandler: @escaping OnResponseCompletionHandler) {
        // TODO: Check for a retryable error disguised as success, and retry, if able
        completionHandler(response, nil)
    }

    public func on(
        error: AzureError,
        pipelineResponse _: PipelineResponse,
        completionHandler: @escaping OnErrorCompletionHandler
    ) {
        // TODO: If retryable, retry the request
        completionHandler(error, false)
    }
}
