package mcpc

import (
	"testing"

	"nub/internal/config"
)

func TestSelectServers_NoProfilesConfigured_ReturnsAll(t *testing.T) {
	servers := []config.MCPServer{{Name: "a"}, {Name: "b"}}
	out, err := SelectServers(servers, nil, "")
	if err != nil {
		t.Fatal(err)
	}
	if len(out) != 2 {
		t.Errorf("got %d servers, want 2 (no filtering without profiles)", len(out))
	}
}

func TestSelectServers_FiltersToNamedProfile(t *testing.T) {
	servers := []config.MCPServer{{Name: "github"}, {Name: "linear"}}
	profiles := map[string][]string{"review": {"github"}, "default": {}}

	out, err := SelectServers(servers, profiles, "review")
	if err != nil {
		t.Fatal(err)
	}
	if len(out) != 1 || out[0].Name != "github" {
		t.Errorf("got %+v, want only github", out)
	}
}

func TestSelectServers_DefaultsToDefaultProfile(t *testing.T) {
	servers := []config.MCPServer{{Name: "github"}}
	profiles := map[string][]string{"default": {}}

	out, err := SelectServers(servers, profiles, "")
	if err != nil {
		t.Fatal(err)
	}
	if len(out) != 0 {
		t.Errorf("got %+v, want empty (default profile has no servers)", out)
	}
}

func TestSelectServers_UnknownProfileErrors(t *testing.T) {
	servers := []config.MCPServer{{Name: "github"}}
	profiles := map[string][]string{"default": {}}

	if _, err := SelectServers(servers, profiles, "does-not-exist"); err == nil {
		t.Fatal("expected error for unknown profile")
	}
}