package core

import (
	"reflect"
	"sort"
	"testing"
)

func TestManagedPathsFiltersSystemScope(t *testing.T) {
	descs := []SettingDesc{
		{Key: "models.chat.model", Scope: SettingScopeSystem},
		{Key: "ui.theme"},
		{Key: "tools.tavily.apiKeys", Scope: SettingScopeSystem},
	}
	got := ManagedPaths(descs)
	sort.Strings(got)
	want := []string{"models.chat.model", "tools.tavily.apiKeys"}
	if !reflect.DeepEqual(got, want) {
		t.Fatalf("ManagedPaths = %v, want %v", got, want)
	}
}

func TestTouchesManagedSettings(t *testing.T) {
	managed := []string{"models.chat.model", "tools.tavily.apiKeys", "telemetry.otlpEndpoint"}
	cases := []struct {
		name string
		in   map[string]any
		want []string
	}{
		{"exact leaf", map[string]any{"models": map[string]any{"chat": map[string]any{"model": "x"}}}, []string{"models.chat.model"}},
		{"sibling untouched", map[string]any{"models": map[string]any{"chat": map[string]any{"baseUrl": "x"}}}, nil},
		{"ancestor scalar overwrite", map[string]any{"models": "oops"}, []string{"models"}},
		{"subtree inside managed", map[string]any{"telemetry": map[string]any{"otlpEndpoint": "http://x"}}, []string{"telemetry.otlpEndpoint"}},
		{"other group untouched", map[string]any{"ui": map[string]any{"theme": "light"}}, nil},
		{"empty map", map[string]any{}, nil},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			got := TouchesManagedSettings(tc.in, managed)
			sort.Strings(got)
			if tc.want == nil && len(got) != 0 {
				t.Fatalf("TouchesManagedSettings = %v, want none", got)
			}
			if tc.want != nil && !reflect.DeepEqual(got, tc.want) {
				t.Fatalf("TouchesManagedSettings = %v, want %v", got, tc.want)
			}
		})
	}
}

func TestStripManagedSettings(t *testing.T) {
	managed := []string{"models.chat.model", "models.chat.apiKey"}
	in := map[string]any{
		"models": map[string]any{
			"chat":        map[string]any{"model": "x", "baseUrl": "https://b"},
			"lightweight": map[string]any{"model": "y"},
		},
		"ui": map[string]any{"theme": "dark"},
	}
	got := StripManagedSettings(in, managed)
	want := map[string]any{
		"models": map[string]any{
			"chat":        map[string]any{"baseUrl": "https://b"},
			"lightweight": map[string]any{"model": "y"},
		},
		"ui": map[string]any{"theme": "dark"},
	}
	if !reflect.DeepEqual(got, want) {
		t.Fatalf("StripManagedSettings = %v, want %v", got, want)
	}
	if in["models"].(map[string]any)["chat"].(map[string]any)["model"] != "x" {
		t.Fatal("StripManagedSettings 不应修改入参")
	}
}

func TestStripManagedSettingsWholeSubtree(t *testing.T) {
	managed := []string{"models.chat.model", "models.chat.baseUrl", "models.chat.apiKey", "models.chat.fallbacks"}
	in := map[string]any{
		"models": map[string]any{"chat": map[string]any{"model": "x", "baseUrl": "b", "apiKey": "k"}},
	}
	got := StripManagedSettings(in, managed)
	if len(got) != 0 {
		t.Fatalf("整棵受管子树应被剥除（含空父），got %v", got)
	}
}