package link

import (
	"testing"

	"agent-system-backend/pkg/extension"
)

func TestAppOptionsPrefersExplicitExecPaths(t *testing.T) {
	t.Setenv("AGENT_SYSTEM_EXEC_DEPS_DIR", "/from/env/deps")
	t.Setenv("AGENT_SYSTEM_EXEC_WORKSPACE", "overlay")
	t.Setenv("AGENT_SYSTEM_EXEC_ENV_ROOT", "/from/env/root")
	got := appOptions(extension.Options{
		ExecDepsDir:   "/explicit/deps",
		ExecWorkspace: "direct",
		ExecEnvRoot:   "/explicit/root",
	})
	if got.ExecDepsDir != "/explicit/deps" || got.ExecWorkspace != "direct" || got.ExecEnvRoot != "/explicit/root" {
		t.Fatalf("explicit paths lost: %+v", got)
	}
}

func TestAppOptionsReadsExecEnvWhenUnset(t *testing.T) {
	t.Setenv("AGENT_SYSTEM_EXEC_DEPS_DIR", "/from/env/deps")
	t.Setenv("AGENT_SYSTEM_EXEC_WORKSPACE", "overlay")
	t.Setenv("AGENT_SYSTEM_EXEC_ENV_ROOT", "/from/env/root")
	got := appOptions(extension.Options{ExecBackend: "sandbox"})
	if got.ExecBackend != "sandbox" || got.ExecDepsDir != "/from/env/deps" || got.ExecWorkspace != "overlay" || got.ExecEnvRoot != "/from/env/root" {
		t.Fatalf("env fallback: %+v", got)
	}
}