package app

import (
	"context"
	"encoding/json"
	"os"
	"strings"
	"testing"

	"github.com/jackc/pgx/v5/pgxpool"

	"github.com/geo-platform/tenant-api/internal/shared/auth"
	"github.com/geo-platform/tenant-api/internal/shared/config"
	"github.com/geo-platform/tenant-api/internal/shared/publicasset"
	"github.com/sergi/go-diff/diffmatchpatch"
)

func TestUpdateEnterpriseSiteConnectionRequestTracksNullAndMissingFields(t *testing.T) {
	var req UpdateEnterpriseSiteConnectionRequest
	if err := json.Unmarshal([]byte(`{"name":"官网","default_scode":null,"secret":""}`), &req); err != nil {
		t.Fatalf("unmarshal request: %v", err)
	}
	if !req.Name.Set || req.Name.Value == nil || *req.Name.Value != "官网" {
		t.Fatalf("name patch = %#v, want set string", req.Name)
	}
	if !req.DefaultScode.Set || req.DefaultScode.Value != nil {
		t.Fatalf("default_scode patch = %#v, want explicit null", req.DefaultScode)
	}
	if !req.Secret.Set || req.Secret.Value == nil || *req.Secret.Value != "" {
		t.Fatalf("secret patch = %#v, want set empty string", req.Secret)
	}
	if req.Status.Set {
		t.Fatalf("status patch = %#v, want missing", req.Status)
	}
}

func TestEnterpriseSiteUpdateRealDatabaseRepro(t *testing.T) {
	dsn := os.Getenv("TEST_ENTERPRISE_SITE_UPDATE_DSN")
	if dsn == "" {
		t.Skip("set TEST_ENTERPRISE_SITE_UPDATE_DSN to run the real database repro")
	}
	ctx := auth.WithCurrentWorkspaceID(
		auth.WithActor(context.Background(), auth.Actor{UserID: 1, TenantID: 1, PrimaryWorkspaceID: 1}),
		1,
	)
	pool, err := pgxpool.New(ctx, dsn)
	if err != nil {
		t.Fatalf("connect database: %v", err)
	}
	defer pool.Close()

	name := "海翔"
	siteURL := "https://youjayou.com"
	appID := "admin"
	acode := "cn"
	mcode := "2"
	req := UpdateEnterpriseSiteConnectionRequest{
		Name:         EnterpriseSitePatchString{Set: true, Value: &name},
		SiteURL:      EnterpriseSitePatchString{Set: true, Value: &siteURL},
		AppID:        EnterpriseSitePatchString{Set: true, Value: &appID},
		DefaultAcode: EnterpriseSitePatchString{Set: true, Value: &acode},
		DefaultMcode: EnterpriseSitePatchString{Set: true, Value: &mcode},
		DefaultScode: EnterpriseSitePatchString{Set: true, Value: nil},
	}
	if _, err := NewEnterpriseSiteService(pool, config.NewStaticProvider(&config.Config{})).Update(ctx, 1, req); err != nil {
		t.Fatalf("update enterprise site: %v", err)
	}
}

func TestValidateEnterpriseSiteCMSURLRequiresHTTPSForRemoteWordPress(t *testing.T) {
	if err := validateEnterpriseSiteCMSURL("http://example.com", wordpressPlatformID); err == nil {
		t.Fatalf("remote wordpress http url should be rejected")
	}
	if err := validateEnterpriseSiteCMSURL("http://127.0.0.1:6060", wordpressPlatformID); err != nil {
		t.Fatalf("local wordpress http url should be allowed for development: %v", err)
	}
}

func TestNormalizeEnterpriseSiteURLRejectsReservedTargets(t *testing.T) {
	for _, raw := range []string{
		"http://169.254.169.254",
		"http://10.0.0.8",
		"http://[fe80::1]",
	} {
		if _, err := normalizeEnterpriseSiteURL(raw); err == nil {
			t.Fatalf("reserved site url %q should be rejected", raw)
		}
	}
	if got, err := normalizeEnterpriseSiteURL("http://127.0.0.1:6060"); err != nil || got != "http://127.0.0.1:6060" {
		t.Fatalf("local loopback url = %q, %v; want allowed", got, err)
	}
}

func TestEnterpriseSiteDescriptionUsesRenderedHTMLText(t *testing.T) {
	got := enterpriseSiteDescription(
		"<h2>2026年合肥全屋定制行业发展现状</h2><p>消费者需求升级。</p>",
		"## 旧版标题\n旧版正文不应该优先进入摘要",
	)
	if strings.Contains(got, "##") {
		t.Fatalf("description contains markdown heading marker: %q", got)
	}
	if strings.Contains(got, "旧版正文") {
		t.Fatalf("description used markdown while html text was available: %q", got)
	}
	if !strings.Contains(got, "2026年合肥全屋定制行业发展现状") {
		t.Fatalf("description = %q, want rendered html text", got)
	}
}

func TestEnterpriseSiteStripLeadingTitleHeadingHTMLRemovesDuplicateTitle(t *testing.T) {
	got := enterpriseSiteStripLeadingTitleHeadingHTML(
		"<h1>合肥全屋定制口碑怎么判断 看这里</h1><p>正文第一段。</p>",
		"合肥全屋定制口碑怎么判断 看这里",
	)
	if strings.Contains(got, "<h1>") || strings.Contains(got, "合肥全屋定制口碑怎么判断 看这里") {
		t.Fatalf("duplicate title heading was not removed: %q", got)
	}
	if !strings.Contains(got, "正文第一段") {
		t.Fatalf("body content was lost: %q", got)
	}
}

func TestEnterpriseSiteStripLeadingTitleHeadingHTMLKeepsDifferentHeading(t *testing.T) {
	input := "<h2>行业现状</h2><p>正文第一段。</p>"
	got := enterpriseSiteStripLeadingTitleHeadingHTML(input, "合肥全屋定制口碑怎么判断 看这里")
	if got != input {
		t.Fatalf("different leading heading changed: %q", got)
	}
}

func TestEnterpriseSiteStripLeadingTitleHeadingMarkdownRemovesDuplicateTitle(t *testing.T) {
	got := enterpriseSiteStripLeadingTitleHeadingMarkdown(
		"# 合肥全屋定制口碑怎么判断 看这里\n\n正文第一段。",
		"合肥全屋定制口碑怎么判断 看这里",
	)
	if strings.Contains(got, "合肥全屋定制口碑怎么判断 看这里") {
		t.Fatalf("duplicate markdown title was not removed: %q", got)
	}
	if got != "正文第一段。" {
		t.Fatalf("markdown body = %q, want body only", got)
	}
}

func TestEnterpriseSiteStripLeadingTitleHeadingMarkdownRemovesPlainTitle(t *testing.T) {
	got := enterpriseSiteStripLeadingTitleHeadingMarkdown(
		"装修预算不够？2026安徽6款高性价比家居整理\n\n近年安徽本地全屋定制需求持续上涨。",
		"装修预算不够？2026安徽6款高性价比家居整理",
	)
	if strings.Contains(got, "装修预算不够？2026安徽6款高性价比家居整理") {
		t.Fatalf("plain duplicate title was not removed: %q", got)
	}
	if !strings.HasPrefix(got, "近年安徽本地全屋定制需求持续上涨") {
		t.Fatalf("markdown body = %q, want body only", got)
	}
}

func TestEnterpriseSiteDescriptionAfterTitleStripSkipsDuplicateTitle(t *testing.T) {
	title := "合肥全屋定制口碑怎么判断 看这里"
	html := enterpriseSiteStripLeadingTitleHeadingHTML("<h1>"+title+"</h1><p>正文第一段。</p>", title)
	markdown := enterpriseSiteStripLeadingTitleHeadingMarkdown("# "+title+"\n\n正文第一段。", title)
	got := enterpriseSiteDescription(html, markdown)
	if strings.Contains(got, title) {
		t.Fatalf("description still contains duplicate title: %q", got)
	}
	if !strings.Contains(got, "正文第一段") {
		t.Fatalf("description = %q, want body text", got)
	}
}

func TestEnterpriseSiteDescriptionFallsBackToCleanMarkdown(t *testing.T) {
	got := enterpriseSiteDescription("", "## 2026年合肥全屋定制行业发展现状\n- 消费者需求升级。")
	if strings.Contains(got, "##") || strings.Contains(got, "- ") {
		t.Fatalf("description was not cleaned: %q", got)
	}
	if !strings.Contains(got, "消费者需求升级") {
		t.Fatalf("description = %q, want markdown text", got)
	}
}

func TestEnterpriseSiteNormalizeStoredContentRestoresDiffPatch(t *testing.T) {
	source := "# 2026安徽全屋定制行业\n\n## 引言\n正文第一段。"
	dmp := diffmatchpatch.New()
	patch := dmp.PatchToText(dmp.PatchMake("", source))

	got := enterpriseSiteNormalizeStoredContent(patch)

	if got != source {
		t.Fatalf("restored content = %q, want %q", got, source)
	}
	if strings.Contains(got, "@@ -") {
		t.Fatalf("diff patch leaked into normalized content: %q", got)
	}
}

func TestEnterpriseSiteNormalizeStoredContentRepairsMalformedEditorImage(t *testing.T) {
	got := enterpriseSiteNormalizeStoredContent(
		`<p class="article-editor-image article-editor-image--center" align="center" <img src="/api/public/assets/token" alt="" /></p>`,
	)
	if !strings.Contains(got, `align="center"><img`) {
		t.Fatalf("malformed editor image was not repaired: %q", got)
	}
}

func TestEnterpriseSiteHTMLContentPatchFallsBackToMarkdownRendering(t *testing.T) {
	source := "# 2026安徽全屋定制行业\n\n## 引言\n正文第一段。"
	dmp := diffmatchpatch.New()
	htmlContent := enterpriseSiteNormalizeStoredContent(dmp.PatchToText(dmp.PatchMake("", source)))
	markdownContent := ""
	if htmlContent != "" && !enterpriseSiteContentLooksLikeHTML(htmlContent) {
		markdownContent = htmlContent
		htmlContent = ""
	}

	got, err := markdownToEnterpriseSiteHTML(markdownContent)
	if err != nil {
		t.Fatalf("render markdown: %v", err)
	}

	if strings.Contains(got, "@@ -") || strings.Contains(got, "%E5") {
		t.Fatalf("rendered HTML still contains patch/url-encoded content: %q", got)
	}
	if !strings.Contains(got, "<h1>2026安徽全屋定制行业</h1>") || !strings.Contains(got, "<p>正文第一段。</p>") {
		t.Fatalf("rendered HTML = %q, want UEditor-ready HTML", got)
	}
}

func TestEnterpriseSiteAbsoluteImageURLsRewritesRelativeAssetPaths(t *testing.T) {
	got := enterpriseSiteAbsoluteImageURLs(
		`<p><img src="/api/public/assets/token" data-src="/api/public/assets/token" /></p>`,
		"http://127.0.0.1:8080",
	)
	if strings.Count(got, "http://127.0.0.1:8080/api/public/assets/token") != 2 {
		t.Fatalf("image urls were not absolutized: %s", got)
	}
}

func TestPrepareEnterpriseSiteImageURLsEmbedsPublicAssetImages(t *testing.T) {
	objectKey := "tenants/7/images/body.png"
	token := publicasset.SignObjectKey(objectKey, "test-secret")
	storage := &enterpriseSiteImageObjectStorage{content: testEnterpriseSitePNG()}
	svc := NewEnterpriseSiteService(nil, config.NewStaticProvider(&config.Config{
		JWT: config.JWTConfig{Secret: "test-secret"},
	})).WithObjectStorage(storage)

	got := svc.prepareEnterpriseSiteImageURLs(
		context.Background(),
		7,
		11,
		`<p><img src="/api/public/assets/`+token+`" data-src="/api/public/assets/`+token+`" /></p>`,
		"http://127.0.0.1:8080",
	)

	if storage.gotKey != objectKey {
		t.Fatalf("object key = %q, want %q", storage.gotKey, objectKey)
	}
	if strings.Count(got, `data:image/png;base64,`) != 2 {
		t.Fatalf("image was not embedded in both image attrs: %s", got)
	}
	if strings.Contains(got, "/api/public/assets/") {
		t.Fatalf("public asset url leaked into enterprise site payload: %s", got)
	}
}

func TestPrepareEnterpriseSiteImageURLsEmbedsPublicAssetImagesWithStaleSignature(t *testing.T) {
	objectKey := "tenants/7/images/body.png"
	token := publicasset.SignObjectKey(objectKey, "old-secret")
	storage := &enterpriseSiteImageObjectStorage{content: testEnterpriseSitePNG()}
	svc := NewEnterpriseSiteService(nil, config.NewStaticProvider(&config.Config{
		JWT: config.JWTConfig{Secret: "new-secret"},
	})).WithObjectStorage(storage)

	got := svc.prepareEnterpriseSiteImageURLs(
		context.Background(),
		7,
		11,
		`<p><img src="http://localhost:5178/api/public/assets/`+token+`" /></p>`,
		"http://127.0.0.1:8080",
	)

	if storage.gotKey != objectKey {
		t.Fatalf("object key = %q, want %q", storage.gotKey, objectKey)
	}
	if !strings.Contains(got, `src="data:image/png;base64,`) {
		t.Fatalf("stale signed image was not embedded: %s", got)
	}
	if strings.Contains(got, "localhost:5178") || strings.Contains(got, "/api/public/assets/") {
		t.Fatalf("saas asset url leaked into enterprise site payload: %s", got)
	}
}

func TestPrepareEnterpriseSiteImageURLsStripsSaaSImageAttrs(t *testing.T) {
	objectKey := "tenants/7/images/body.png"
	token := publicasset.SignObjectKey(objectKey, "test-secret")
	storage := &enterpriseSiteImageObjectStorage{content: testEnterpriseSitePNG()}
	svc := NewEnterpriseSiteService(nil, config.NewStaticProvider(&config.Config{
		JWT: config.JWTConfig{Secret: "test-secret"},
	})).WithObjectStorage(storage)

	got := svc.prepareEnterpriseSiteImageURLs(
		context.Background(),
		7,
		11,
		`<p><img src="/api/public/assets/`+token+`" alt="" data-asset-id="35" asset-id="35" /></p>`,
		"http://127.0.0.1:8080",
	)

	if !strings.Contains(got, `src="data:image/png;base64,`) {
		t.Fatalf("image was not embedded: %s", got)
	}
	if strings.Contains(got, "data-asset-id") || strings.Contains(got, "asset-id") {
		t.Fatalf("saas image attrs leaked into enterprise site payload: %s", got)
	}
}

func TestPrepareEnterpriseSiteImageURLsDropsUnavailableSaaSAssetImage(t *testing.T) {
	objectKey := "tenants/7/images/deleted.webp"
	token := publicasset.SignObjectKey(objectKey, "old-secret")
	storage := &enterpriseSiteImageObjectStorage{}
	svc := NewEnterpriseSiteService(nil, config.NewStaticProvider(&config.Config{
		JWT: config.JWTConfig{Secret: "new-secret"},
	})).WithObjectStorage(storage)

	got := svc.prepareEnterpriseSiteImageURLs(
		context.Background(),
		7,
		11,
		`<p>前文</p><p class="article-editor-image article-editor-image--center" align="center"><img src="http://localhost:5178/api/public/assets/`+token+`" alt="" /></p><p>后文</p>`,
		"http://127.0.0.1:8080",
	)

	if strings.Contains(got, "localhost:5178") || strings.Contains(got, "/api/public/assets/") {
		t.Fatalf("unavailable saas asset url leaked into enterprise site payload: %s", got)
	}
	if strings.Contains(got, "<img") || strings.Contains(got, "article-editor-image") {
		t.Fatalf("unavailable image wrapper was not removed: %s", got)
	}
	if !strings.Contains(got, "前文") || !strings.Contains(got, "后文") {
		t.Fatalf("surrounding content was lost: %s", got)
	}
}

func TestPrepareEnterpriseSiteImageURLsEmbedsIncompletePublicAssetPaths(t *testing.T) {
	objectKey := "tenants/7/articles/42/images/body.webp"
	token := publicasset.SignObjectKey(objectKey, "test-secret")
	storage := &enterpriseSiteImageObjectStorage{content: testEnterpriseSitePNG()}
	svc := NewEnterpriseSiteService(nil, config.NewStaticProvider(&config.Config{
		JWT: config.JWTConfig{Secret: "test-secret"},
	})).WithObjectStorage(storage)

	got := svc.prepareEnterpriseSiteImageURLs(
		context.Background(),
		7,
		11,
		`<p><img src="api/public/assets/`+token+`?format=png" /></p>`,
		"http://127.0.0.1:8080",
	)

	if storage.gotKey != objectKey {
		t.Fatalf("object key = %q, want %q", storage.gotKey, objectKey)
	}
	if !strings.Contains(got, `src="data:image/png;base64,`) {
		t.Fatalf("image was not embedded for incomplete asset path: %s", got)
	}
	if strings.Contains(got, "127.0.0.1") || strings.Contains(got, "api/public/assets") {
		t.Fatalf("incomplete asset path leaked into enterprise site payload: %s", got)
	}
}

func TestMarkdownRenderedEnterpriseSiteImageEmbedsIncompletePublicAssetPath(t *testing.T) {
	objectKey := "tenants/7/articles/42/images/body.webp"
	token := publicasset.SignObjectKey(objectKey, "test-secret")
	storage := &enterpriseSiteImageObjectStorage{content: testEnterpriseSitePNG()}
	svc := NewEnterpriseSiteService(nil, config.NewStaticProvider(&config.Config{
		JWT: config.JWTConfig{Secret: "test-secret"},
	})).WithObjectStorage(storage)
	html, err := markdownToEnterpriseSiteHTML("正文\n\n![body](api/public/assets/" + token + "?format=png)")
	if err != nil {
		t.Fatalf("render markdown: %v", err)
	}

	got := svc.prepareEnterpriseSiteImageURLs(context.Background(), 7, 11, html, "http://127.0.0.1:8080")

	if storage.gotKey != objectKey {
		t.Fatalf("object key = %q, want %q", storage.gotKey, objectKey)
	}
	if !strings.Contains(got, `src="data:image/png;base64,`) {
		t.Fatalf("markdown image was not embedded for incomplete asset path: %s", got)
	}
	if strings.Contains(got, "127.0.0.1") || strings.Contains(got, "api/public/assets") {
		t.Fatalf("markdown image asset path leaked into enterprise site payload: %s", got)
	}
}

func TestPrepareEnterpriseSitePublishAssetsEmbedsIncompleteCoverAssetPath(t *testing.T) {
	objectKey := "tenants/7/articles/42/images/cover.webp"
	token := publicasset.SignObjectKey(objectKey, "test-secret")
	storage := &enterpriseSiteImageObjectStorage{content: testEnterpriseSitePNG()}
	svc := NewEnterpriseSiteService(nil, config.NewStaticProvider(&config.Config{
		JWT:    config.JWTConfig{Secret: "test-secret"},
		Server: config.ServerConfig{PublicBaseURL: "http://127.0.0.1:8080"},
	})).WithObjectStorage(storage)

	got := svc.prepareEnterpriseSiteCoverURL(
		context.Background(),
		7,
		11,
		"api/public/assets/"+token+"?format=png",
		nil,
		"http://127.0.0.1:8080",
	)

	if storage.gotKey != objectKey {
		t.Fatalf("object key = %q, want %q", storage.gotKey, objectKey)
	}
	if !strings.HasPrefix(got, "data:image/png;base64,") {
		t.Fatalf("cover was not embedded as data URI: %q", got)
	}
}

func TestPrepareEnterpriseSiteCoverURLDropsUnavailableSaaSAssetURL(t *testing.T) {
	objectKey := "tenants/7/images/deleted.webp"
	token := publicasset.SignObjectKey(objectKey, "old-secret")
	storage := &enterpriseSiteImageObjectStorage{}
	svc := NewEnterpriseSiteService(nil, config.NewStaticProvider(&config.Config{
		JWT:    config.JWTConfig{Secret: "new-secret"},
		Server: config.ServerConfig{PublicBaseURL: "http://127.0.0.1:8080"},
	})).WithObjectStorage(storage)

	got := svc.prepareEnterpriseSiteCoverURL(
		context.Background(),
		7,
		11,
		"http://localhost:5178/api/public/assets/"+token,
		nil,
		"http://127.0.0.1:8080",
	)

	if got != "" {
		t.Fatalf("unavailable saas cover should not be sent to pbootcms, got %q", got)
	}
}

func TestEnterpriseSiteNormalizeLegacyPublishErrorState(t *testing.T) {
	errorMessage := "图片下载失败"
	item := EnterpriseSiteConnectionResponse{
		Status:    "error",
		LastError: &errorMessage,
		LatestRecord: &EnterpriseSiteLatestPublishRecord{
			Status:       "failed",
			ErrorMessage: &errorMessage,
		},
	}

	enterpriseSiteNormalizeLegacyPublishErrorState(&item)

	if item.Status != "connected" {
		t.Fatalf("status = %q, want connected", item.Status)
	}
	if item.LastError != nil {
		t.Fatalf("last error = %q, want nil", *item.LastError)
	}
}

func TestEnterpriseSiteNormalizeLegacyPublishErrorStateKeepsPingError(t *testing.T) {
	lastError := "CMS request failed"
	recordError := "图片下载失败"
	item := EnterpriseSiteConnectionResponse{
		Status:    "error",
		LastError: &lastError,
		LatestRecord: &EnterpriseSiteLatestPublishRecord{
			Status:       "failed",
			ErrorMessage: &recordError,
		},
	}

	enterpriseSiteNormalizeLegacyPublishErrorState(&item)

	if item.Status != "error" {
		t.Fatalf("status = %q, want error", item.Status)
	}
	if item.LastError == nil || *item.LastError != lastError {
		t.Fatalf("last error changed: %#v", item.LastError)
	}
}

func TestSanitizeEnterpriseSiteErrorTranslatesWordPressAuthFailure(t *testing.T) {
	got := sanitizeEnterpriseSiteError(&wordpressRequestError{
		message: "wordpress wp/v2/users/me returned http 401: rest_not_logged_in: 您目前没有登录。",
		status:  401,
		code:    "rest_not_logged_in",
	})
	want := "WordPress 认证失败，请使用 WordPress 用户名和 Application Password"
	if got != want {
		t.Fatalf("sanitize error = %q, want %q", got, want)
	}
}

type enterpriseSiteImageObjectStorage struct {
	content []byte
	gotKey  string
}

func (s *enterpriseSiteImageObjectStorage) Validate() error { return nil }

func (s *enterpriseSiteImageObjectStorage) PutBytes(context.Context, string, []byte, string) error {
	return nil
}

func (s *enterpriseSiteImageObjectStorage) GetBytes(_ context.Context, objectKey string) ([]byte, error) {
	s.gotKey = objectKey
	return s.content, nil
}

func (s *enterpriseSiteImageObjectStorage) Exists(context.Context, string) (bool, error) {
	return true, nil
}

func (s *enterpriseSiteImageObjectStorage) Delete(context.Context, string) error { return nil }

func (s *enterpriseSiteImageObjectStorage) PublicURL(string) (string, error) { return "", nil }

func (s *enterpriseSiteImageObjectStorage) DownloadURL(string) (string, error) { return "", nil }

func testEnterpriseSitePNG() []byte {
	return []byte{
		0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a,
		0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52,
		0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
		0x08, 0x06, 0x00, 0x00, 0x00, 0x1f, 0x15, 0xc4,
		0x89, 0x00, 0x00, 0x00, 0x0a, 0x49, 0x44, 0x41,
		0x54, 0x78, 0x9c, 0x63, 0x00, 0x01, 0x00, 0x00,
		0x05, 0x00, 0x01, 0x0d, 0x0a, 0x2d, 0xb4, 0x00,
		0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae,
		0x42, 0x60, 0x82,
	}
}