package api

import (
	"encoding/csv"
	"fmt"
	"net/http"

	"github.com/gorilla/mux"
	"github.com/rs/zerolog/log"
)

func (h *Handler) CacheExport(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	cacheID := vars["cacheid"]

	result, err := h.applicationHandler.ExportCacheAsCSV(cacheID)
	if err != nil {
		log.Error().Err(err).Msg("Error exporting cache")
		w.WriteHeader(http.StatusNotFound)
		return
	}

	w.Header().Set("Content-Type", "text/csv")
	w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=export-%s.csv", cacheID))

	csvWriter := csv.NewWriter(w)
	defer csvWriter.Flush()

	csvWriter.Write(result.Headers)
	csvWriter.WriteAll(result.Values)
}