package activitypub

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

	webutils "git.mstar.dev/mstar/goutils/http"
	"github.com/rs/zerolog/hlog"
	"gorm.io/gorm"

	"git.mstar.dev/mstar/linstrom/activitypub"
	"git.mstar.dev/mstar/linstrom/activitypub/translators"
	"git.mstar.dev/mstar/linstrom/storage-new"
)

func activityFollow(w http.ResponseWriter, r *http.Request) {
	log := hlog.FromRequest(r)
	id := r.PathValue("id")
	activity, err := translators.FollowFromStorage(r.Context(), id)
	switch err {
	case gorm.ErrRecordNotFound:
		_ = webutils.ProblemDetailsStatusOnly(w, http.StatusNotFound)
	case nil:
		activity.Context = activitypub.BaseLdContext
		data, err := json.Marshal(activity)
		if err != nil {
			log.Error().Err(err).Any("activity", activity).Msg("Failed to marshal create activity")
			_ = webutils.ProblemDetailsStatusOnly(w, http.StatusInternalServerError)
			return
		}
		w.Header().Add("Content-Type", "application/activity+json")
		_, _ = fmt.Fprint(w, string(data))
	default:
		if storage.HandleReconnectError(err) {
			log.Error().Err(err).Msg("Connection failed, restart attempt started")
		} else {
			log.Error().Err(err).Msg("Failed to get create activity from db")
		}
		_ = webutils.ProblemDetailsStatusOnly(w, http.StatusInternalServerError)
	}
}