// Package api provides REST API handlers for Spaxel.
package api

import (
	"encoding/json"
	"log"
	"net/http"
	"strings"
)

// writeJSON writes a JSON response with the given status code.
func writeJSON(w http.ResponseWriter, status int, v interface{}) {
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(status)
	if err := json.NewEncoder(w).Encode(v); err != nil {
		log.Printf("[ERROR] Failed to encode JSON response: %v", err)
	}
}

// writeJSONData writes a JSON response without setting status (assumes status already set).
func writeJSONData(w http.ResponseWriter, v interface{}) {
	w.Header().Set("Content-Type", "application/json")
	if err := json.NewEncoder(w).Encode(v); err != nil {
		log.Printf("[ERROR] Failed to encode JSON response: %v", err)
	}
}

// writeJSONError writes a JSON error response.
func writeJSONError(w http.ResponseWriter, status int, message string) {
	writeJSON(w, status, map[string]string{"error": message})
}

// joinComma joins a slice of strings with ", " separator.
func joinComma(parts []string) string {
	return strings.Join(parts, ", ")
}