package handler

import (
	"net/http"

	"go.uber.org/zap"

	"github.com/dbiz/cdp/ingestion/ingest/internal/live"
)

// LiveHandler streams Kafka events over SSE for the console's Live page.
//
// Note: this endpoint is unauthenticated in the scaffold. Wire it behind the
// console session / a workspace token before exposing it publicly.
type LiveHandler struct {
	stream *live.Streamer
	log    *zap.Logger
}

func NewLiveHandler(s *live.Streamer, log *zap.Logger) *LiveHandler {
	return &LiveHandler{stream: s, log: log}
}

// Stream handles GET /live/events. Optional query params:
//
//	?workspace_id=...   filter by workspace
//	?source_id=...      filter by source
//	?type=track         filter by event type (track|identify|page|group|...)
func (h *LiveHandler) Stream(w http.ResponseWriter, r *http.Request) {
	q := r.URL.Query()
	flt := live.Filter{
		WorkspaceID: q.Get("workspace_id"),
		SourceID:    q.Get("source_id"),
		EventType:   q.Get("type"),
	}
	if err := h.stream.Stream(r.Context(), w, flt); err != nil {
		h.log.Warn("live stream ended", zap.Error(err))
	}
}