package api

import (
	"net/http"
	"strconv"

	"github.com/go-chi/chi/v5"

	"smartrun/backend/internal/store"
)

func (s *Server) handleListActivities(w http.ResponseWriter, r *http.Request) {
	q := r.URL.Query()
	filter := store.ActivityFilter{
		FromDate: q.Get("from"),
		ToDate:   q.Get("to"),
	}
	if limit, err := strconv.Atoi(q.Get("limit")); err == nil {
		filter.Limit = limit
	}
	if offset, err := strconv.Atoi(q.Get("offset")); err == nil {
		filter.Offset = offset
	}

	activities, err := s.DB.ListActivities(r.Context(), filter)
	if err != nil {
		writeError(w, http.StatusInternalServerError, err.Error())
		return
	}
	writeJSON(w, http.StatusOK, activities)
}

func (s *Server) handleGetActivity(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.ParseInt(chi.URLParam(r, "id"), 10, 64)
	if err != nil {
		writeError(w, http.StatusBadRequest, "invalid activity id")
		return
	}

	activity, ok, err := s.DB.GetActivity(r.Context(), id)
	if err != nil {
		writeError(w, http.StatusInternalServerError, err.Error())
		return
	}
	if !ok {
		writeError(w, http.StatusNotFound, "activity not found")
		return
	}

	laps, err := s.DB.LapsForActivity(r.Context(), id)
	if err != nil {
		writeError(w, http.StatusInternalServerError, err.Error())
		return
	}

	assignment, hasAssignment, err := s.DB.CurrentAssignment(r.Context(), id)
	if err != nil {
		writeError(w, http.StatusInternalServerError, err.Error())
		return
	}

	resp := map[string]any{"activity": activity, "laps": laps}
	if hasAssignment {
		resp["assignment"] = assignment
	}
	writeJSON(w, http.StatusOK, resp)
}