refactor: reorganize project structure following go standards
This commit is contained in:
397
integrations/watchorder/watch_order.go
Normal file
397
integrations/watchorder/watch_order.go
Normal file
@@ -0,0 +1,397 @@
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package watchorder
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"net/http"
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"regexp"
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"strconv"
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"strings"
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"github.com/PuerkitoBio/goquery"
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)
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const defaultUserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36"
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var idPattern = regexp.MustCompile(`/id/(\d+)`)
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var malLinkPattern = regexp.MustCompile(`myanimelist\.net/anime/(\d+)`)
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var ErrInvalidWatchOrderURL = errors.New("invalid watch order url")
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var ErrWatchOrderMarkupNotFound = errors.New("watch order markup not found")
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type HTTPStatusError struct {
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StatusCode int
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URL string
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Server string
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CFRay string
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Location string
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ContentType string
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BodyPreview string
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}
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func (e *HTTPStatusError) Error() string {
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return fmt.Sprintf(
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"unexpected status code: %d (url=%s server=%s cf_ray=%s location=%s content_type=%s body=%q)",
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e.StatusCode,
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e.URL,
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e.Server,
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e.CFRay,
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e.Location,
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e.ContentType,
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e.BodyPreview,
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)
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}
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type WatchOrderEntry struct {
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ID int `json:"id"`
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Type string `json:"type"`
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Title string `json:"title"`
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TitleAlt string `json:"title_alt,omitempty"`
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}
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type WatchOrderResult struct {
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ID int `json:"id"`
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WatchOrder []WatchOrderEntry `json:"watch_order"`
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}
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type watchOrderRow struct {
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id int
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typeID int
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title string
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alternativeTitle string
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}
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func parseRootID(url string) (int, error) {
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match := idPattern.FindStringSubmatch(url)
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if len(match) != 2 {
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return 0, ErrInvalidWatchOrderURL
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}
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id, err := strconv.Atoi(match[1])
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if err != nil {
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return 0, ErrInvalidWatchOrderURL
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}
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return id, nil
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}
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func addCommonHeaders(request *http.Request) {
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request.Header.Set("User-Agent", defaultUserAgent)
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request.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8")
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request.Header.Set("Accept-Language", "en-US,en;q=0.9")
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request.Header.Set("Referer", "https://chiaki.site/")
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request.Header.Set("Cache-Control", "no-cache")
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}
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func fetchDocument(ctx context.Context, httpClient *http.Client, url string) (*goquery.Document, error) {
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client := httpClient
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if client == nil {
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client = http.DefaultClient
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}
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request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
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if err != nil {
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return nil, fmt.Errorf("failed to create request: %w", err)
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}
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addCommonHeaders(request)
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response, err := client.Do(request)
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if err != nil {
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return nil, fmt.Errorf("request failed: %w", err)
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}
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defer response.Body.Close()
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if response.StatusCode != http.StatusOK {
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body, _ := io.ReadAll(io.LimitReader(response.Body, 512))
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return nil, &HTTPStatusError{
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StatusCode: response.StatusCode,
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URL: url,
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Server: strings.TrimSpace(response.Header.Get("Server")),
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CFRay: strings.TrimSpace(response.Header.Get("CF-Ray")),
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Location: strings.TrimSpace(response.Header.Get("Location")),
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ContentType: strings.TrimSpace(response.Header.Get("Content-Type")),
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BodyPreview: strings.Join(strings.Fields(strings.TrimSpace(string(body))), " "),
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}
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}
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document, err := goquery.NewDocumentFromReader(response.Body)
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if err != nil {
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return nil, fmt.Errorf("failed to parse html: %w", err)
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}
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return document, nil
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}
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func extractTypeLabelsByID(doc *goquery.Document) map[int]string {
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typeLabels := make(map[int]string)
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doc.Find("#wo_type_filter label").Each(func(_ int, selection *goquery.Selection) {
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input := selection.Find("input[type='checkbox']")
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rawID, exists := input.Attr("value")
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if !exists {
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return
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}
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typeID, err := strconv.Atoi(strings.TrimSpace(rawID))
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if err != nil {
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return
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}
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label := strings.TrimSpace(selection.Text())
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if label == "" {
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return
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}
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typeLabels[typeID] = label
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})
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return typeLabels
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}
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func parseAttrInt(selection *goquery.Selection, attrName string) (int, bool) {
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rawValue, exists := selection.Attr(attrName)
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if !exists {
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return 0, false
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}
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value, err := strconv.Atoi(strings.TrimSpace(rawValue))
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if err != nil {
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return 0, false
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}
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return value, true
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}
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func extractRows(doc *goquery.Document) []watchOrderRow {
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rows := make([]watchOrderRow, 0)
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doc.Find("tr[data-id]").Each(func(_ int, selection *goquery.Selection) {
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id, ok := parseAttrInt(selection, "data-id")
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if !ok {
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return
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}
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typeID, ok := parseAttrInt(selection, "data-type")
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if !ok {
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return
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}
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title := strings.TrimSpace(selection.Find(".wo_title").First().Text())
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alternativeTitle := strings.TrimSpace(selection.Find(".uk-text-small").First().Text())
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rows = append(rows, watchOrderRow{
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id: id,
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typeID: typeID,
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title: title,
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alternativeTitle: alternativeTitle,
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})
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})
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return rows
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}
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func hasWatchOrderTable(doc *goquery.Document) bool {
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return doc.Find("#wo_list").Length() > 0
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}
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func shouldTryProxy(err error) bool {
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var statusError *HTTPStatusError
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if errors.As(err, &statusError) {
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return statusError.StatusCode == http.StatusForbidden || statusError.StatusCode == http.StatusTooManyRequests || statusError.StatusCode == http.StatusServiceUnavailable
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}
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return false
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}
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func toJinaProxyURL(url string) string {
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trimmed := strings.TrimPrefix(strings.TrimPrefix(url, "https://"), "http://")
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return "https://r.jina.ai/http://" + trimmed
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}
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func fetchProxyText(ctx context.Context, httpClient *http.Client, url string) (string, error) {
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client := httpClient
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if client == nil {
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client = http.DefaultClient
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}
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request, err := http.NewRequestWithContext(ctx, http.MethodGet, toJinaProxyURL(url), nil)
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if err != nil {
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return "", fmt.Errorf("failed to create proxy request: %w", err)
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}
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addCommonHeaders(request)
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response, err := client.Do(request)
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if err != nil {
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return "", fmt.Errorf("proxy request failed: %w", err)
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}
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defer response.Body.Close()
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if response.StatusCode != http.StatusOK {
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return "", fmt.Errorf("proxy status %d", response.StatusCode)
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}
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body, err := io.ReadAll(io.LimitReader(response.Body, 2*1024*1024))
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if err != nil {
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return "", fmt.Errorf("failed to read proxy response: %w", err)
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}
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return string(body), nil
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}
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func parseJinaEntries(text string) []WatchOrderEntry {
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lines := strings.Split(text, "\n")
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entries := make([]WatchOrderEntry, 0)
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seen := make(map[int]bool)
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for index, line := range lines {
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trimmed := strings.TrimSpace(line)
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if trimmed == "" {
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continue
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}
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if !strings.Contains(trimmed, "myanimelist.net/anime/") || !strings.Contains(trimmed, "|") {
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continue
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}
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idMatch := malLinkPattern.FindStringSubmatch(trimmed)
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if len(idMatch) != 2 {
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continue
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}
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id, err := strconv.Atoi(idMatch[1])
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if err != nil || seen[id] {
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continue
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}
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parts := strings.Split(trimmed, "|")
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if len(parts) < 2 {
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continue
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}
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typeName := strings.TrimSpace(parts[1])
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if typeName == "" {
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continue
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}
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title, titleAlt := titleFromContext(lines, index)
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entries = append(entries, WatchOrderEntry{
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ID: id,
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Type: typeName,
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Title: title,
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TitleAlt: titleAlt,
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})
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seen[id] = true
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}
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return entries
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}
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func isNoiseTitleLine(value string) bool {
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lower := strings.ToLower(strings.TrimSpace(value))
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if lower == "" {
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return true
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}
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if strings.HasPrefix(lower, "title:") || strings.HasPrefix(lower, "url source:") || strings.HasPrefix(lower, "markdown content:") {
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return true
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}
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if strings.Contains(lower, "/ watch order") {
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return true
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}
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if strings.HasPrefix(lower, "http://") || strings.HasPrefix(lower, "https://") {
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return true
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}
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return false
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}
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func titleFromContext(lines []string, metaIndex int) (string, string) {
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collected := make([]string, 0, 2)
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for idx := metaIndex - 1; idx >= 0 && len(collected) < 2; idx-- {
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candidate := strings.TrimSpace(lines[idx])
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if candidate == "" {
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continue
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}
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if isNoiseTitleLine(candidate) {
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continue
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}
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if strings.Contains(candidate, "myanimelist.net/anime/") {
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continue
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}
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collected = append(collected, candidate)
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}
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if len(collected) == 0 {
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return "", ""
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}
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if len(collected) == 1 {
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return collected[0], ""
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}
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return collected[1], collected[0]
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}
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func fetchViaProxy(ctx context.Context, httpClient *http.Client, url string, rootID int) (WatchOrderResult, error) {
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proxyText, err := fetchProxyText(ctx, httpClient, url)
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if err != nil {
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return WatchOrderResult{}, err
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}
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entries := parseJinaEntries(proxyText)
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if len(entries) == 0 {
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return WatchOrderResult{}, ErrWatchOrderMarkupNotFound
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}
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return WatchOrderResult{ID: rootID, WatchOrder: entries}, nil
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}
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func FetchWatchOrder(ctx context.Context, httpClient *http.Client, url string) (WatchOrderResult, error) {
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rootID, err := parseRootID(url)
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if err != nil {
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return WatchOrderResult{}, err
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}
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doc, err := fetchDocument(ctx, httpClient, url)
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if err != nil {
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if shouldTryProxy(err) {
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return fetchViaProxy(ctx, httpClient, url, rootID)
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}
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return WatchOrderResult{}, err
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}
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if !hasWatchOrderTable(doc) {
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return fetchViaProxy(ctx, httpClient, url, rootID)
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}
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rows := extractRows(doc)
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if len(rows) == 0 {
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return WatchOrderResult{ID: rootID, WatchOrder: []WatchOrderEntry{}}, nil
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}
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typeByID := extractTypeLabelsByID(doc)
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entries := make([]WatchOrderEntry, 0, len(rows))
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for _, row := range rows {
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typeName := strings.TrimSpace(typeByID[row.typeID])
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entries = append(entries, WatchOrderEntry{
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ID: row.id,
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Type: typeName,
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Title: row.title,
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TitleAlt: row.alternativeTitle,
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})
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}
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return WatchOrderResult{ID: rootID, WatchOrder: entries}, nil
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}
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212
integrations/watchorder/watch_order_test.go
Normal file
212
integrations/watchorder/watch_order_test.go
Normal file
@@ -0,0 +1,212 @@
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package watchorder
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import (
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"context"
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"errors"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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"time"
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)
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func testServer(body string) *httptest.Server {
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handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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_, _ = w.Write([]byte(body))
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})
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return httptest.NewServer(handler)
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}
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func testHTMLWithMetadata() string {
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return `
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<!doctype html>
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<html>
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<body>
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<div id="wo_type_filter">
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<label><input type="checkbox" value="1" checked> TV</label>
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<label><input type="checkbox" value="3" checked> Movie</label>
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</div>
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<table id="wo_list">
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<tr data-id="442" data-anilist-id="442" data-type="3">
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<td>
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<span class="wo_title">Naruto Movie 1</span>
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<span class="uk-text-small">Naruto the Movie 1</span>
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</td>
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</tr>
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</table>
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</body>
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</html>`
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}
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func testHTMLEmptyRows() string {
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return `
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<!doctype html>
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<html>
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<body>
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<div id="wo_type_filter">
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<label><input type="checkbox" value="1" checked> TV</label>
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<label><input type="checkbox" value="3" checked> Movie</label>
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</div>
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<table id="wo_list"></table>
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</body>
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</html>`
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}
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func TestFetchWatchOrder_OutputShape(t *testing.T) {
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server := testServer(testHTMLWithMetadata())
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defer server.Close()
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url := server.URL + "/?/tools/watch_order/id/442"
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result, err := FetchWatchOrder(context.Background(), &http.Client{Timeout: time.Second}, url)
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if err != nil {
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t.Fatalf("expected no error, got %v", err)
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}
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if result.ID != 442 {
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t.Fatalf("expected root id 442, got %d", result.ID)
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}
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if len(result.WatchOrder) != 1 {
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t.Fatalf("expected 1 watch_order entry, got %d", len(result.WatchOrder))
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}
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entry := result.WatchOrder[0]
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if entry.ID != 442 {
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t.Fatalf("expected entry id 442, got %d", entry.ID)
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}
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if entry.Type != "Movie" {
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t.Fatalf("expected type Movie, got %q", entry.Type)
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}
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if entry.Title != "Naruto Movie 1" {
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t.Fatalf("expected title Naruto Movie 1, got %q", entry.Title)
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}
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if entry.TitleAlt != "Naruto the Movie 1" {
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t.Fatalf("expected title_alt Naruto the Movie 1, got %q", entry.TitleAlt)
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}
|
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}
|
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|
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func TestFetchWatchOrder_NoRowsReturnsEmpty(t *testing.T) {
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server := testServer(testHTMLEmptyRows())
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defer server.Close()
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|
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url := server.URL + "/?/tools/watch_order/id/1535"
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result, err := FetchWatchOrder(context.Background(), &http.Client{Timeout: time.Second}, url)
|
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if err != nil {
|
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t.Fatalf("expected no error, got %v", err)
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}
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|
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if result.ID != 1535 {
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t.Fatalf("expected root id 1535, got %d", result.ID)
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}
|
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|
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if len(result.WatchOrder) != 0 {
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t.Fatalf("expected no entries, got %d", len(result.WatchOrder))
|
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}
|
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}
|
||||
|
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func TestFetchWatchOrder_MissingMarkupFallsBackToProxy(t *testing.T) {
|
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proxyPayload := `Title: Jujutsu Kaisen / Watch Order
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||||
URL Source: https://chiaki.site/?/tools/watch_order/id/40748
|
||||
|
||||
Markdown Content:
|
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Jujutsu Kaisen
|
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|
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Oct 3, 2020 – Mar 27, 2021 | TV | 24ep × 23min. | ★8.51 | [](https://myanimelist.net/anime/40748)
|
||||
Jujutsu Kaisen 0 Movie
|
||||
|
||||
Jujutsu Kaisen 0
|
||||
|
||||
Dec 24, 2021 | Movie | 1ep × 1hr. 44min. | ★8.36 | [](https://myanimelist.net/anime/48561)
|
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`
|
||||
|
||||
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
if strings.HasPrefix(r.URL.Path, "/http/") {
|
||||
w.WriteHeader(http.StatusOK)
|
||||
_, _ = w.Write([]byte(proxyPayload))
|
||||
return
|
||||
}
|
||||
|
||||
w.WriteHeader(http.StatusForbidden)
|
||||
_, _ = w.Write([]byte("blocked"))
|
||||
}))
|
||||
defer server.Close()
|
||||
|
||||
transport := http.DefaultTransport
|
||||
testClient := &http.Client{
|
||||
Timeout: time.Second,
|
||||
Transport: roundTripFunc(func(request *http.Request) (*http.Response, error) {
|
||||
if strings.HasPrefix(request.URL.Host, "r.jina.ai") {
|
||||
proxyURL := server.URL + "/http/" + strings.TrimPrefix(request.URL.Path, "/")
|
||||
proxyRequest, err := http.NewRequestWithContext(request.Context(), request.Method, proxyURL, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return transport.RoundTrip(proxyRequest)
|
||||
}
|
||||
|
||||
blockedURL := server.URL + request.URL.Path
|
||||
blockedRequest, err := http.NewRequestWithContext(request.Context(), request.Method, blockedURL, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return transport.RoundTrip(blockedRequest)
|
||||
}),
|
||||
}
|
||||
|
||||
result, err := FetchWatchOrder(context.Background(), testClient, "https://chiaki.site/?/tools/watch_order/id/40748")
|
||||
if err != nil {
|
||||
t.Fatalf("expected no error, got %v", err)
|
||||
}
|
||||
|
||||
if len(result.WatchOrder) != 2 {
|
||||
t.Fatalf("expected 2 proxy entries, got %d", len(result.WatchOrder))
|
||||
}
|
||||
|
||||
if result.WatchOrder[0].ID != 40748 || result.WatchOrder[0].Type != "TV" {
|
||||
t.Fatalf("unexpected first entry: %+v", result.WatchOrder[0])
|
||||
}
|
||||
|
||||
if result.WatchOrder[1].ID != 48561 || result.WatchOrder[1].Type != "Movie" {
|
||||
t.Fatalf("unexpected second entry: %+v", result.WatchOrder[1])
|
||||
}
|
||||
}
|
||||
|
||||
func TestFetchWatchOrder_HTTPStatusErrorIncludesContext(t *testing.T) {
|
||||
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
w.Header().Set("Server", "cloudflare")
|
||||
w.Header().Set("CF-Ray", "abc123")
|
||||
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
||||
w.WriteHeader(http.StatusForbidden)
|
||||
_, _ = w.Write([]byte("<html><body>access denied</body></html>"))
|
||||
}))
|
||||
defer server.Close()
|
||||
|
||||
url := server.URL + "/?/tools/watch_order/id/1"
|
||||
_, err := fetchDocument(context.Background(), &http.Client{Timeout: time.Second}, url)
|
||||
if err == nil {
|
||||
t.Fatalf("expected error, got nil")
|
||||
}
|
||||
|
||||
var statusError *HTTPStatusError
|
||||
if !errors.As(err, &statusError) {
|
||||
t.Fatalf("expected HTTPStatusError, got %T", err)
|
||||
}
|
||||
|
||||
if statusError.StatusCode != http.StatusForbidden {
|
||||
t.Fatalf("expected 403, got %d", statusError.StatusCode)
|
||||
}
|
||||
if statusError.CFRay != "abc123" {
|
||||
t.Fatalf("expected cf-ray abc123, got %q", statusError.CFRay)
|
||||
}
|
||||
if !strings.Contains(statusError.BodyPreview, "access denied") {
|
||||
t.Fatalf("expected body preview to include access denied, got %q", statusError.BodyPreview)
|
||||
}
|
||||
}
|
||||
|
||||
type roundTripFunc func(*http.Request) (*http.Response, error)
|
||||
|
||||
func (f roundTripFunc) RoundTrip(request *http.Request) (*http.Response, error) {
|
||||
return f(request)
|
||||
}
|
||||
Reference in New Issue
Block a user