package http

import (
	"crypto/tls"
	"encoding/json"
	"net/http"
	"os"

	"git.netflux.io/rob/esbot/internal/matrix"
	"github.com/rs/zerolog"
	"github.com/rs/zerolog/log"
)

type handler struct {
	logger zerolog.Logger
	ep     matrix.EventProcessor
}

func (h *handler) handleTransactions(w http.ResponseWriter, r *http.Request) {
	if r.Method != "PUT" {
		w.WriteHeader(http.StatusMethodNotAllowed)
		return
	}

	var payload EventsRequest
	if err := json.NewDecoder(r.Body).Decode(&payload); err != nil {
		w.WriteHeader(http.StatusBadRequest)
		return
	}

	if err := h.ep.ProcessEvents(payload.RawEvents); err != nil {
		w.WriteHeader(http.StatusBadRequest)
		return
	}

	w.WriteHeader(http.StatusOK)
	w.Write([]byte("{}"))
}

func ListenAndServe(addr, accessToken string, insecureTLS bool) error {
	http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: insecureTLS}
	logger := log.Output(zerolog.ConsoleWriter{Out: os.Stdout})

	h := handler{
		logger: logger,
		ep:     matrix.NewProcessor(accessToken, logger),
	}

	mux := http.NewServeMux()
	mux.HandleFunc("/transactions/", h.handleTransactions)

	return http.ListenAndServe(addr, loggerMiddleware(logger, mux))
}