// Package handlers provides HTTP request handlers.
package handlers

import (
	"context"
	"encoding/json"
	"log/slog"
	"net/http"

	"go.uber.org/fx"
	"sneak.berlin/go/pixa/internal/healthcheck"
	"sneak.berlin/go/pixa/internal/logger"
)

// Params defines dependencies for Handlers.
type Params struct {
	fx.In
	Logger      *logger.Logger
	Healthcheck *healthcheck.Healthcheck
}

// Handlers provides HTTP request handlers.
type Handlers struct {
	log *slog.Logger
	hc  *healthcheck.Healthcheck
}

// New creates a new Handlers instance.
func New(lc fx.Lifecycle, params Params) (*Handlers, error) {
	s := &Handlers{
		log: params.Logger.Get(),
		hc:  params.Healthcheck,
	}

	lc.Append(fx.Hook{
		OnStart: func(_ context.Context) error {
			return nil
		},
	})

	return s, nil
}

func (s *Handlers) respondJSON(w http.ResponseWriter, data interface{}, status int) {
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(status)
	if data != nil {
		err := json.NewEncoder(w).Encode(data)
		if err != nil {
			s.log.Error("json encode error", "error", err)
		}
	}
}

func (s *Handlers) respondError(w http.ResponseWriter, code string, message string, status int) {
	s.respondJSON(w, map[string]string{
		"error":   code,
		"message": message,
	}, status)
}