using WxAgent.Core;
using Xunit;

namespace WxAgent.Core.Tests;

public sealed class WechatSearchRulesTests
{
    [Fact]
    public void CollapsedGroupsExposeALocalExpansion_NotANetworkKeyword()
    {
        var page = WechatSearchRules.Parse([
            ("", "群聊"), ("search_item_技术交流群", "群聊\n技术交流群"), ("", "查看全部(10)"),
            ("", "网络搜索"), ("search_item_web_交流", "网络搜索\n交流"), ("", "交流")], "交流");
        Assert.Single(page.Results);
        Assert.Equal("技术交流群", page.Results[0].Name);
        Assert.False(page.Results[0].IsExactMatch);
        Assert.Equal("技术交流群", WechatSearchRules.RequireExact(page.Results, "技术交流群").Name);
        Assert.Equal(new WechatSearchExpansion("群聊", 2, 10), Assert.Single(page.Expansions));
        Assert.Throws<WxAgentException>(() => WechatSearchRules.RequireExact(page.Results, "交流"));
    }

    [Fact]
    public void GroupsAndContactsAreBothLocal_AndDuplicateNamesRemainAmbiguous()
    {
        var page = WechatSearchRules.Parse([
            ("", "联系人"), ("search_item_交流", "联系人\n交流"),
            ("", "群聊"), ("search_item_交流", "群聊\n交流")], "交流");
        Assert.Equal(2, page.Results.Count);
        Assert.Equal(WxAgentErrorCode.InvalidOperationState,
            Assert.Throws<WxAgentException>(() => WechatSearchRules.RequireExact(page.Results, "交流")).Code);
    }

    [Fact]
    public void ExpandedLocalPageStillExcludesNetworkAndHistory()
    {
        var page = WechatSearchRules.Parse([
            ("search_item_技术交流群", "技术交流群"), ("search_item_web_交流", "交流"),
            ("", "聊天记录"), ("search_item_历史交流", "交流")], "交流", "群聊");
        Assert.Equal("技术交流群", Assert.Single(page.Results).Name);
        Assert.Empty(page.Expansions);
    }

    [Fact]
    public void ExpandedPageDoesNotTrustUnknownSectionsOrTheirSearchIds()
    {
        var page = WechatSearchRules.Parse([
            ("search_item_技术交流群", "技术交流群"),
            ("", "未知类别"), ("search_item_new_kind_交流", "交流")], "交流", "群聊");
        Assert.Equal("技术交流群", Assert.Single(page.Results).Name);
    }

    [Fact]
    public void PromotedLocalConversationRemainsSelectableButUnknownFamiliesDoNot()
    {
        var page = WechatSearchRules.Parse([
            ("", "最常使用"), ("search_item_技术交流群", "技术交流群"),
            ("search_item_function_交流", "交流"), ("search_item_online_交流", "交流"),
            ("search_item_future_交流", "交流")], "交流");
        Assert.Equal("技术交流群", WechatSearchRules.RequireExact(page.Results, "技术交流群").Name);
        Assert.Single(page.Results);
    }

    [Fact]
    public void ACategoryCaptionIsNotTheConversationName()
    {
        var page = WechatSearchRules.Parse([("", "群聊"), ("search_item_技术群", "群聊\n技术群")], "群聊");
        Assert.Equal("技术群", Assert.Single(page.Results).Name);
        Assert.False(page.Results[0].IsExactMatch);
    }

    [Fact]
    public void WebExpansionAndUnclassifiedSearchItemsAreNeverTargets()
    {
        var page = WechatSearchRules.Parse([
            ("search_item_交流", "交流"), ("", "网络搜索"), ("", "查看全部(99)")], "交流");
        Assert.Empty(page.Results);
        Assert.Empty(page.Expansions);
        Assert.Throws<WxAgentException>(() => WechatSearchRules.Parse([], "交流", "网络搜索"));
    }
}