64 lines
1.5 KiB
Go
64 lines
1.5 KiB
Go
package api
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import (
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"net/http"
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"strconv"
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"strings"
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"reanimator/internal/repository/timeline"
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)
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func writeTimelineResponse(w http.ResponseWriter, r *http.Request, repo *timeline.EventRepository, subjectType string, subjectID string) {
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limit := 50
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if raw := r.URL.Query().Get("limit"); raw != "" {
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if parsed, err := strconv.Atoi(raw); err == nil {
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limit = parsed
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} else {
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writeError(w, http.StatusBadRequest, "invalid limit")
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return
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}
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}
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var cursor *timeline.Cursor
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if raw := r.URL.Query().Get("cursor"); raw != "" {
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decoded, err := timeline.DecodeCursor(raw)
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if err != nil {
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writeError(w, http.StatusBadRequest, "invalid cursor")
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return
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}
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cursor = &decoded
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}
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items, next, err := repo.List(r.Context(), subjectType, subjectID, limit, cursor)
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if err != nil {
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writeError(w, http.StatusInternalServerError, "list timeline failed")
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return
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}
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var nextCursor *string
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if next != nil {
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value := timeline.EncodeCursor(*next)
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nextCursor = &value
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}
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writeJSON(w, http.StatusOK, map[string]any{
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"items": items,
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"next_cursor": nextCursor,
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})
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}
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func parseTimelineID(path, prefix string) string {
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if !strings.HasPrefix(path, prefix) || !strings.HasSuffix(path, "/timeline") {
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return ""
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}
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trimmed := strings.TrimPrefix(path, prefix)
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trimmed = strings.TrimSuffix(trimmed, "/timeline")
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if trimmed == "" || strings.Contains(trimmed, "/") {
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return ""
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}
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if !entityIDPattern.MatchString(trimmed) {
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return ""
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}
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return trimmed
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}
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