package test

import (
	domainArticle "RenewCMS/internal/domain/article"
	"RenewCMS/internal/infrastructure/useCases"
	"encoding/base64"
	"net/http"
	"net/url"
	"reflect"
	"testing"
)

type mediaOrderRecordingArticleRepo struct {
	*mockArticleRepo
	updated []uint32
}

func (r *mediaOrderRecordingArticleRepo) UpdateBody(id uint32, body string) (domainArticle.Article, error) {
	r.updated = append(r.updated, id)
	return r.mockArticleRepo.UpdateBody(id, body)
}

func TestMediaCursorBoundaries(t *testing.T) {
	seed := func(env *mediaEnv) {
		env.seedImage(1, "a.jpg", 10, "image/jpeg", 3, 2, hashA, 1)
		env.seedImage(2, "b.jpg", 20, "image/jpeg", 3, 2, hashB, 1)
	}
	encode := func(raw string) string {
		return url.QueryEscape(base64.RawURLEncoding.EncodeToString([]byte(raw)))
	}

	t.Run("A cursor at offset zero is accepted and starts from the first item", func(t *testing.T) {
		env := newMediaEnv(t)
		seed(env)

		rec := env.send(t, http.MethodGet, "/v1/media/?cursor="+encode("offset:0"), "", mediaVerifiedUserId)

		if rec.Code != http.StatusOK {
			t.Fatalf("expected status 200, got %d", rec.Code)
		}
	})

	t.Run("A negative cursor offset is refused", func(t *testing.T) {
		env := newMediaEnv(t)
		seed(env)

		rec := env.send(t, http.MethodGet, "/v1/media/?cursor="+encode("offset:-1"), "", mediaVerifiedUserId)

		if rec.Code != http.StatusBadRequest {
			t.Fatalf("expected status 400, got %d", rec.Code)
		}
	})
}

func TestMediaMergeRewritesArticlesInIdOrder(t *testing.T) {
	env := newMediaEnv(t)
	env.seedImage(2, "floorboards.jpg", 20, "image/jpeg", 3, 2, hashB, 1)
	env.seedImage(3, "floorboards-copy.jpg", 20, "image/jpeg", 3, 2, hashB, 2)
	for id := uint32(1); id <= 8; id++ {
		env.seedArticle(id, "Article", true, env.urlOf(3))
	}
	recorder := &mediaOrderRecordingArticleRepo{mockArticleRepo: env.articles}
	uc := useCases.NewMergeMediaUseCase(env.images, recorder, env.storage, newMockVariantFileRepo(), discardRecorder)

	if _, err := uc.Merge(testCtx, 2, []uint32{3}); err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	if want := []uint32{1, 2, 3, 4, 5, 6, 7, 8}; !reflect.DeepEqual(recorder.updated, want) {
		t.Errorf("expected updates in id order %v, got %v", want, recorder.updated)
	}
}