package runtime

import (
	"strings"
	"testing"
)

func TestManagedProcessStopEventNameIsStableAndScoped(t *testing.T) {
	base := ProcessIdentity{Scope: `C:\workspace\instances\server-1\run-local`, RunEndpointID: "run-1", ServerInstanceID: "server-1", LogSessionID: "session-a"}
	if got, want := managedProcessStopEventName(base), managedProcessStopEventName(base); got != want {
		t.Fatalf("stop event name is not stable: got=%q want=%q", got, want)
	}
	if got := managedProcessStopEventName(base); !strings.HasPrefix(got, `Local\run-managed-stop-`) {
		t.Fatalf("stop event name is not in the local namespace: %q", got)
	}
	if strings.Contains(managedProcessStopEventName(base), "workspace") {
		t.Fatalf("stop event name leaked the process scope: %q", managedProcessStopEventName(base))
	}
	for _, changed := range []ProcessIdentity{
		{Scope: base.Scope, RunEndpointID: "run-2", ServerInstanceID: base.ServerInstanceID, LogSessionID: base.LogSessionID},
		{Scope: base.Scope, RunEndpointID: base.RunEndpointID, ServerInstanceID: "server-2", LogSessionID: base.LogSessionID},
		{Scope: base.Scope, RunEndpointID: base.RunEndpointID, ServerInstanceID: base.ServerInstanceID, LogSessionID: "session-b"},
	} {
		if got := managedProcessStopEventName(changed); got == managedProcessStopEventName(base) {
			t.Fatalf("different process generation shared stop event name: base=%q changed=%q", managedProcessStopEventName(base), got)
		}
	}
}

func TestManagedProcessGenerationRejectsOutputFileSwap(t *testing.T) {
	current := ProcessIdentity{
		PID:          100,
		LogSessionID: "session-a",
		StdoutLogRef: "stdout-a.log",
		StderrLogRef: "stderr-a.log",
	}

	if !sameManagedProcessGeneration(current, current) {
		t.Fatal("expected an identical managed process generation to match")
	}
	for _, expected := range []ProcessIdentity{
		{PID: 100, LogSessionID: "session-a", StdoutLogRef: "stdout-b.log", StderrLogRef: "stderr-a.log"},
		{PID: 100, LogSessionID: "session-a", StdoutLogRef: "stdout-a.log", StderrLogRef: "stderr-b.log"},
	} {
		if sameManagedProcessGeneration(current, expected) {
			t.Fatalf("output file swap was treated as the same generation: current=%+v expected=%+v", current, expected)
		}
	}
}