package api

import (
	"context"
	"errors"
	"testing"

	creator "git.ipao.vip/rogee/creator-hub/internal/creator"
)

type eventCoverFilesStub struct {
	files            map[string]bool
	readErr, saveErr error
}

func (s *eventCoverFilesStub) GetPlatformWorkCover(uid, key string) (string, error) {
	if s.readErr != nil {
		return "", s.readErr
	}
	if s.files[uid+"/"+key] {
		return "cached", nil
	}
	return "", creator.ErrNotFound
}
func (s *eventCoverFilesStub) SavePlatformWorkCover(uid, key, mime string, data []byte) error {
	if s.saveErr != nil {
		return s.saveErr
	}
	s.files[uid+"/"+key] = true
	return nil
}
func coverNotice() creator.ListenerDelivery {
	return creator.ListenerDelivery{Kind: "notice", Notice: &creator.ListenerNotice{EventKey: "1", WorkID: "2", WorkAuthorUID: "3", WorkCoverURL: "https://p3.douyinpic.com/a.jpg", MessageText: "原内容", WorkCoverError: "old failure"}}
}
func TestListenerWorkCoversReuseSharedFilesAndExposeFailures(t *testing.T) {
	files := &eventCoverFilesStub{files: map[string]bool{}}
	calls := 0
	fetch := func(context.Context, string) (string, []byte, error) {
		calls++
		return "image/jpeg", []byte("image"), nil
	}
	items := []creator.ListenerDelivery{coverNotice(), coverNotice(), {Kind: "checkpoint"}}
	cacheListenerWorkCovers(context.Background(), files, fetch, items)
	if calls != 1 || items[0].Notice.WorkCoverError != "" || items[1].Notice.WorkCoverError != "" {
		t.Fatalf("duplicate fetch/old errors: %d %+v", calls, items)
	}
	for _, failure := range []string{"read", "download", "save"} {
		files := &eventCoverFilesStub{files: map[string]bool{}}
		failed := errors.New(failure + " failed")
		called := false
		fetch := func(context.Context, string) (string, []byte, error) {
			called = true
			if failure == "download" {
				return "", nil, failed
			}
			return "image/jpeg", []byte("image"), nil
		}
		if failure == "read" {
			files.readErr = failed
		}
		if failure == "save" {
			files.saveErr = failed
		}
		items := []creator.ListenerDelivery{coverNotice()}
		cacheListenerWorkCovers(context.Background(), files, fetch, items)
		if items[0].Notice.WorkCoverError != failed.Error() || items[0].Notice.MessageText != "原内容" {
			t.Fatalf("failure hidden: %+v", items)
		}
		if failure == "read" && called {
			t.Fatal("filesystem failure concealed by download")
		}
	}
}