package api

import (
	"net/http"

	"reanimator/internal/repository/failures"
)

type FailureDependencies struct {
	Failures *failures.FailureRepository
}

type failureHandlers struct {
	deps FailureDependencies
}

func RegisterFailureRoutes(mux *http.ServeMux, deps FailureDependencies) {
	h := failureHandlers{deps: deps}
	mux.HandleFunc("/failures", h.handleFailures)
}

func (h failureHandlers) handleFailures(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodGet {
		w.WriteHeader(http.StatusMethodNotAllowed)
		return
	}
	if h.deps.Failures == nil {
		writeError(w, http.StatusInternalServerError, "failures unavailable")
		return
	}

	limit := 200
	if raw := r.URL.Query().Get("limit"); raw != "" {
		parsed, err := parseIntParam(raw)
		if err != nil || parsed <= 0 {
			writeError(w, http.StatusBadRequest, "limit must be a positive integer")
			return
		}
		limit = parsed
	}

	items, err := h.deps.Failures.ListAll(r.Context(), limit)
	if err != nil {
		writeError(w, http.StatusInternalServerError, "list failures failed")
		return
	}
	writeJSON(w, http.StatusOK, map[string]any{"items": items})
}