package mediawire

import (
	"context"
	"errors"
	"net"
	"testing"
)

// R-1060 — the library wiring and the sessions call Plex by ADDRESS (productionURL), resolved at every call; every
// other app stays by name. COMPANION RED-PROOF: drop the plex case in productionURL → „http://plex:32400" and this fails.
func TestR1060_ProductionURLCallsPlexByAddress(t *testing.T) {
	old := PlexLookup
	t.Cleanup(func() { PlexLookup = old })
	calls := 0
	PlexLookup = func(context.Context) ([]net.IPAddr, error) {
		calls++
		return []net.IPAddr{{IP: net.ParseIP("fd00::5")}, {IP: net.ParseIP("172.18.0.15")}}, nil
	}
	url := productionURL(nil)
	if got := url("plex", 32400); got != "http://172.18.0.15:32400" {
		t.Fatalf("plex → %q, want its IPv4 address", got)
	}
	_ = url("plex", 32400)
	if calls != 2 {
		t.Fatalf("resolved %d times for 2 calls — the address must be resolved at each call, never cached", calls)
	}
	if got := url("sonarr", 8989); got != "http://sonarr:8989" {
		t.Fatalf("sonarr → %q, other apps stay by name", got)
	}
	PlexLookup = func(context.Context) ([]net.IPAddr, error) { return nil, errors.New("no such host") }
	if got := url("plex", 32400); got != "http://plex:32400" {
		t.Fatalf("an unresolvable plex falls back to the name (logged), got %q", got)
	}
}