package dashboard

import (
	"fmt"
	"net/http"
	"strconv"
)

type sitesPageData struct {
	PageData
	Items []siteDTO // dynamic length — as many slots as configured, no fixed cap
}

func (s *Server) handleSitesPage(w http.ResponseWriter, r *http.Request) {
	items, err := s.CA.ListSites(r.Context())
	data := sitesPageData{Items: items}
	data.ActiveNav = "sites"
	data.Banner = bannerFor(err)
	s.renderPage(w, "sites_page", data)
}

func (s *Server) renderSitesTable(w http.ResponseWriter, r *http.Request, actionErr error) {
	items, listErr := s.CA.ListSites(r.Context())
	if actionErr == nil {
		actionErr = listErr
	}
	s.renderFragment(w, "sites_table", sitesPageData{Items: items}, actionErr)
}

// handleSiteCreate adds a brand-new slot via the "add site" form — same
// create-alongside-update pattern as /targets' handleTargetCreate, just
// backed by the same PutSite call the per-row form already uses (there's
// no separate "create" endpoint on control-api since PUT is already an
// upsert).
func (s *Server) handleSiteCreate(w http.ResponseWriter, r *http.Request) {
	if err := r.ParseForm(); err != nil {
		s.renderSitesTable(w, r, fmt.Errorf("invalid form: %w", err))
		return
	}
	index, convErr := strconv.Atoi(r.PostFormValue("index"))
	if convErr != nil {
		s.renderSitesTable(w, r, &apiErr{Status: http.StatusBadRequest, Message: "index должен быть числом"})
		return
	}
	err := s.CA.PutSite(r.Context(), index, r.PostFormValue("site_id"))
	s.renderSitesTable(w, r, err)
}

func (s *Server) handleSitePut(w http.ResponseWriter, r *http.Request) {
	index, convErr := strconv.Atoi(r.PathValue("index"))
	if convErr != nil {
		s.renderSitesTable(w, r, &apiErr{Status: http.StatusBadRequest, Message: "index должен быть числом"})
		return
	}
	if err := r.ParseForm(); err != nil {
		s.renderSitesTable(w, r, fmt.Errorf("invalid form: %w", err))
		return
	}
	err := s.CA.PutSite(r.Context(), index, r.PostFormValue("site_id"))
	s.renderSitesTable(w, r, err)
}

func (s *Server) handleSiteDelete(w http.ResponseWriter, r *http.Request) {
	index, convErr := strconv.Atoi(r.PathValue("index"))
	if convErr != nil {
		s.renderSitesTable(w, r, &apiErr{Status: http.StatusBadRequest, Message: "index должен быть числом"})
		return
	}
	err := s.CA.DeleteSite(r.Context(), index)
	s.renderSitesTable(w, r, err)
}