package image

import (
	"context"
	"io"
	"strings"
	"time"

	"github.com/docker/docker/api/types"
	"github.com/docker/docker/api/types/filters"
	"github.com/docker/docker/api/types/image"
	"github.com/docker/docker/api/types/system"
	"github.com/docker/docker/client"
)

type fakeClient struct {
	client.Client
	imageTagFunc     func(string, string) error
	imageSaveFunc    func(images []string, options ...client.ImageSaveOption) (io.ReadCloser, error)
	imageRemoveFunc  func(image string, options image.RemoveOptions) ([]image.DeleteResponse, error)
	imagePushFunc    func(ref string, options image.PushOptions) (io.ReadCloser, error)
	infoFunc         func() (system.Info, error)
	imagePullFunc    func(ref string, options image.PullOptions) (io.ReadCloser, error)
	imagesPruneFunc  func(pruneFilter filters.Args) (image.PruneReport, error)
	imageLoadFunc    func(input io.Reader, options ...client.ImageLoadOption) (image.LoadResponse, error)
	imageListFunc    func(options image.ListOptions) ([]image.Summary, error)
	imageInspectFunc func(img string) (image.InspectResponse, error)
	imageImportFunc  func(source image.ImportSource, ref string, options image.ImportOptions) (io.ReadCloser, error)
	imageHistoryFunc func(img string, options ...client.ImageHistoryOption) ([]image.HistoryResponseItem, error)
	imageBuildFunc   func(context.Context, io.Reader, types.ImageBuildOptions) (types.ImageBuildResponse, error)
}

func (cli *fakeClient) ImageTag(_ context.Context, img, ref string) error {
	if cli.imageTagFunc != nil {
		return cli.imageTagFunc(img, ref)
	}
	return nil
}

func (cli *fakeClient) ImageSave(_ context.Context, images []string, options ...client.ImageSaveOption) (io.ReadCloser, error) {
	if cli.imageSaveFunc != nil {
		return cli.imageSaveFunc(images, options...)
	}
	return io.NopCloser(strings.NewReader("")), nil
}

func (cli *fakeClient) ImageRemove(_ context.Context, img string,
	options image.RemoveOptions,
) ([]image.DeleteResponse, error) {
	if cli.imageRemoveFunc != nil {
		return cli.imageRemoveFunc(img, options)
	}
	return []image.DeleteResponse{}, nil
}

func (cli *fakeClient) ImagePush(_ context.Context, ref string, options image.PushOptions) (io.ReadCloser, error) {
	if cli.imagePushFunc != nil {
		return cli.imagePushFunc(ref, options)
	}
	return io.NopCloser(strings.NewReader("")), nil
}

func (cli *fakeClient) Info(_ context.Context) (system.Info, error) {
	if cli.infoFunc != nil {
		return cli.infoFunc()
	}
	return system.Info{}, nil
}

func (cli *fakeClient) ImagePull(_ context.Context, ref string, options image.PullOptions) (io.ReadCloser, error) {
	if cli.imagePullFunc != nil {
		return cli.imagePullFunc(ref, options)
	}
	return io.NopCloser(strings.NewReader("")), nil
}

func (cli *fakeClient) ImagesPrune(_ context.Context, pruneFilter filters.Args) (image.PruneReport, error) {
	if cli.imagesPruneFunc != nil {
		return cli.imagesPruneFunc(pruneFilter)
	}
	return image.PruneReport{}, nil
}

func (cli *fakeClient) ImageLoad(_ context.Context, input io.Reader, options ...client.ImageLoadOption) (image.LoadResponse, error) {
	if cli.imageLoadFunc != nil {
		return cli.imageLoadFunc(input, options...)
	}
	return image.LoadResponse{}, nil
}

func (cli *fakeClient) ImageList(_ context.Context, options image.ListOptions) ([]image.Summary, error) {
	if cli.imageListFunc != nil {
		return cli.imageListFunc(options)
	}
	return []image.Summary{}, nil
}

func (cli *fakeClient) ImageInspect(_ context.Context, img string, _ ...client.ImageInspectOption) (image.InspectResponse, error) {
	if cli.imageInspectFunc != nil {
		return cli.imageInspectFunc(img)
	}
	return image.InspectResponse{}, nil
}

func (cli *fakeClient) ImageImport(_ context.Context, source image.ImportSource, ref string,
	options image.ImportOptions,
) (io.ReadCloser, error) {
	if cli.imageImportFunc != nil {
		return cli.imageImportFunc(source, ref, options)
	}
	return io.NopCloser(strings.NewReader("")), nil
}

func (cli *fakeClient) ImageHistory(_ context.Context, img string, options ...client.ImageHistoryOption) ([]image.HistoryResponseItem, error) {
	if cli.imageHistoryFunc != nil {
		return cli.imageHistoryFunc(img, options...)
	}
	return []image.HistoryResponseItem{{ID: img, Created: time.Now().Unix()}}, nil
}

func (cli *fakeClient) ImageBuild(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) {
	if cli.imageBuildFunc != nil {
		return cli.imageBuildFunc(ctx, buildContext, options)
	}
	return types.ImageBuildResponse{Body: io.NopCloser(strings.NewReader(""))}, nil
}
