package api

import (
	"net/http"

	"git.coopgo.io/coopgo-apps/parcoursmob/core/utils/cache"
	"github.com/gorilla/mux"
	"github.com/rs/zerolog/log"
)

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

	// Parse query parameters
	limitsMinStr := r.URL.Query().Get("limits.min")
	limitsMaxStr := r.URL.Query().Get("limits.max")
	limitsMin, limitsMax := cache.ParseLimits(limitsMinStr, limitsMaxStr)

	// Use a channel to synchronize the goroutines
	ch := make(chan []byte)

	// Fetch data from cache asynchronously
	go func() {
		result, err := h.cacheService.GetCacheData(cacheID, limitsMin, limitsMax)
		if err != nil {
			log.Error().Err(err).Msg("Failed to get cache data")
			w.WriteHeader(http.StatusNotFound)
			ch <- nil
			return
		}
		ch <- result.Data // Signal that the data has been fetched successfully
		close(ch)
	}()

	// Wait for the JSON marshaling goroutine to finish
	data := <-ch
	if data == nil {
		return // Stop processing if an error occurred
	}

	// Send the JSON response to the client
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusOK)
	w.Write(data)

	<-ch
}