package test

import (
	domainArticle "RenewCMS/internal/domain/article"
	"encoding/json"
	"net/http"
	"testing"
)

const (
	localizedArticleID    = 12
	localizedArticleStory = 5
)

var legacyListItemKeys = []string{"id", "title", "body", "body_format", "is_online", "site_id", "authors", "created_at", "updated_at", "excerpt", "slug", "seo_status", "seo_suggestions"}

var legacyArticleKeys = []string{"id", "title", "body", "is_online", "site_id", "authors", "slug", "excerpt", "seo_title", "seo_description", "cover_image_id", "cover_image_alt", "social_title", "social_description", "social_image_id", "canonical_url", "noindex", "seo_dismissed", "created_at", "updated_at"}

func localizedArticle(lang string, online bool) domainArticle.Article {
	return domainArticle.Article{ID: localizedArticleID, Title: "Bonjour le monde", IsOnline: online, CreatedBy: createdByWriterID, Lang: lang, StoryID: localizedArticleStory}
}

func TestArticleLocalizationStorageHTTP(t *testing.T) {
	assertFields := func(t *testing.T, fields map[string]string, lang string, legacyKeys []string) {
		t.Helper()
		if fields["lang"] != `"`+lang+`"` || fields["story_id"] != "5" {
			t.Errorf(`expected lang %q and story_id 5, got lang=%s story_id=%s`, lang, fields["lang"], fields["story_id"])
		}
		for _, key := range legacyKeys {
			if _, present := fields[key]; !present {
				t.Errorf("legacy key %q is missing", key)
			}
		}
	}
	readers := []struct {
		name string
		lang string
		path string
		auth bool
		list bool
		on   bool
	}{
		{"GET /v1/article/12 with a valid jwt", "fr-CA", "/v1/article/12", true, false, false},
		{"GET /v1/article/12 with a valid jwt and no language", "", "/v1/article/12", true, false, false},
		{"GET /v1/article/ list item", "fr-CA", "/v1/article/", true, true, false},
		{"public article read of an online article", "fr-CA", "/v1/article/12", false, false, true},
	}
	for _, reader := range readers {
		t.Run("Article reads expose lang and story_id "+reader.name, func(t *testing.T) {
			e, router := newCreatedByEnv(t)
			e.articles.articles[localizedArticleID] = localizedArticle(reader.lang, reader.on)
			var options []activityRequest
			if reader.auth {
				options = append(options, asUser(e, activityOwnerID))
			}
			rec := sendCreatedBy(router, http.MethodGet, reader.path, "", options...)
			if rec.Code != http.StatusOK {
				t.Fatalf("status %d: %s", rec.Code, rec.Body)
			}
			var fields map[string]string
			if reader.list {
				for _, item := range decodeArticleItems(t, rec.Body.Bytes()) {
					if string(item["id"]) == "12" {
						fields = rawFields(item)
					}
				}
			} else {
				fields = rawFields(decodeArticleFields(t, rec.Body.Bytes()))
			}
			if fields == nil {
				t.Fatalf("article 12 not found in %s", rec.Body)
			}
			legacyKeys := legacyArticleKeys
			if reader.list {
				legacyKeys = legacyListItemKeys
			}
			assertFields(t, fields, reader.lang, legacyKeys)
		})
	}

	t.Run("Article write payloads cannot set lang or story_id", func(t *testing.T) {
		e, router := newCreatedByEnv(t)
		e.articles.articles[localizedArticleID] = localizedArticle("fr-CA", false)

		created := sendCreatedBy(router, http.MethodPost, "/v1/article/", `{"title":"Fresh draft title","body":"","lang":"en","story_id":99}`, asUser(e, createdByWriterID))
		patched := sendCreatedBy(router, http.MethodPatch, "/v1/article/12", `{"excerpt":"Short","lang":"en","story_id":99}`, asUser(e, activityOwnerID))

		if created.Code != http.StatusCreated || patched.Code != http.StatusOK {
			t.Fatalf("statuses %d and %d: %s %s", created.Code, patched.Code, created.Body, patched.Body)
		}
		createdFields := rawFields(decodeArticleFields(t, created.Body.Bytes()))
		if createdFields["lang"] == `"en"` || createdFields["story_id"] == "99" {
			t.Errorf("the create payload set lang or story_id: %v", createdFields)
		}
		assertFields(t, rawFields(decodeArticleFields(t, patched.Body.Bytes())), "fr-CA", legacyArticleKeys)
		if stored := e.articles.articles[localizedArticleID]; stored.Lang != "fr-CA" || stored.StoryID != localizedArticleStory {
			t.Errorf("the stored language or story changed: %+v", stored)
		}
	})
	t.Run("A patch carrying only lang and story_id is refused like a patch with no updatable field", func(t *testing.T) {
		e, router := newCreatedByEnv(t)
		e.articles.articles[localizedArticleID] = localizedArticle("fr-CA", false)

		empty := sendCreatedBy(router, http.MethodPatch, "/v1/article/12", `{}`, asUser(e, activityOwnerID))
		localizationOnly := sendCreatedBy(router, http.MethodPatch, "/v1/article/12", `{"lang":"en","story_id":99}`, asUser(e, activityOwnerID))

		if empty.Code != http.StatusBadRequest || localizationOnly.Code != empty.Code {
			t.Fatalf("expected both to be refused with 400, got %d and %d", empty.Code, localizationOnly.Code)
		}
		if stored := e.articles.articles[localizedArticleID]; stored.Lang != "fr-CA" || stored.StoryID != localizedArticleStory {
			t.Errorf("the stored language or story changed: %+v", stored)
		}
	})
}

func rawFields(object map[string]json.RawMessage) map[string]string {
	flat := make(map[string]string, len(object))
	for key, value := range object {
		flat[key] = string(value)
	}
	return flat
}