using FluentAssertions;
using Microsoft.EntityFrameworkCore;
using Workflow.Application.BuildFlow.Applications.Commands;
using Workflow.Application.BuildFlow.Applications.Handlers;
using Workflow.Application.BuildFlow.Applications.Queries;
using Workflow.Application.BuildFlow.Buttons.Commands;
using Workflow.Application.BuildFlow.Buttons.Handlers;
using Workflow.Application.BuildFlow.Buttons.Queries;
using Workflow.Application.BuildFlow.Pages.Commands;
using Workflow.Application.BuildFlow.Pages.Handlers;
using Workflow.Application.BuildFlow.Pages.Queries;
using Workflow.Domain.Enums;
using Xunit;

namespace BuildFlow.Workflow.Tests.BuildFlow;

/// <summary>
/// BuildFlow 应用元数据测试，约束应用和页面定义作为低代码平台顶层归属存在。
/// </summary>
public class BuildFlowApplicationTests
{
    [Fact]
    public async Task CreateApplicationAndPage_PersistsMetadata()
    {
        await using var db = TestDbFactory.Create();
        var appHandler = new CreateBuildFlowApplicationCommandHandler(db);
        var pageHandler = new CreateBuildFlowPageDefinitionCommandHandler(db);

        var app = await appHandler.Handle(
            new CreateBuildFlowApplicationCommand("leave", "请假应用", "员工请假流程"),
            CancellationToken.None);
        var page = await pageHandler.Handle(
            new CreateBuildFlowPageDefinitionCommand(
                app.Id,
                "leave-form",
                "请假申请页",
                BuildFlowPageType.Form,
                """{"type":"form","formCode":"leave-request"}"""),
            CancellationToken.None);

        app.Code.Should().Be("leave");
        app.Status.Should().Be(BuildFlowMetadataStatus.Draft);
        page.ApplicationId.Should().Be(app.Id);
        page.SchemaJson.Should().Contain("leave-request");
    }

    [Fact]
    public async Task GetApplicationList_FiltersByStatus()
    {
        await using var db = TestDbFactory.Create();
        var appHandler = new CreateBuildFlowApplicationCommandHandler(db);
        var draft = await appHandler.Handle(
            new CreateBuildFlowApplicationCommand("draft-app", "草稿应用", null),
            CancellationToken.None);
        await appHandler.Handle(
            new CreateBuildFlowApplicationCommand("published-app", "已发布应用", null),
            CancellationToken.None);
        var published = await db.BuildFlowApplications.SingleAsync(x => x.Code == "published-app");
        published.Status = BuildFlowMetadataStatus.Published;
        await db.SaveChangesAsync();

        var handler = new GetBuildFlowApplicationListQueryHandler(db);
        var result = await handler.Handle(
            new GetBuildFlowApplicationListQuery(1, 20, BuildFlowMetadataStatus.Draft, null),
            CancellationToken.None);

        result.Total.Should().Be(1);
        result.Items.Should().ContainSingle(x => x.Id == draft.Id && x.Code == "draft-app");
    }

    [Fact]
    public async Task GetPageList_FiltersByApplication()
    {
        await using var db = TestDbFactory.Create();
        var appHandler = new CreateBuildFlowApplicationCommandHandler(db);
        var pageHandler = new CreateBuildFlowPageDefinitionCommandHandler(db);
        var leaveApp = await appHandler.Handle(new CreateBuildFlowApplicationCommand("leave", "请假应用", null), CancellationToken.None);
        var purchaseApp = await appHandler.Handle(new CreateBuildFlowApplicationCommand("purchase", "采购应用", null), CancellationToken.None);
        await pageHandler.Handle(
            new CreateBuildFlowPageDefinitionCommand(leaveApp.Id, "leave-list", "请假列表", BuildFlowPageType.List, "{}"),
            CancellationToken.None);
        await pageHandler.Handle(
            new CreateBuildFlowPageDefinitionCommand(purchaseApp.Id, "purchase-list", "采购列表", BuildFlowPageType.List, "{}"),
            CancellationToken.None);

        var handler = new GetBuildFlowPageDefinitionListQueryHandler(db);
        var result = await handler.Handle(
            new GetBuildFlowPageDefinitionListQuery(1, 20, leaveApp.Id, null, null),
            CancellationToken.None);

        result.Total.Should().Be(1);
        result.Items.Should().ContainSingle(x => x.ApplicationId == leaveApp.Id && x.Code == "leave-list");
    }

    [Fact]
    public async Task GetButtonList_FiltersByFormAndPlacement()
    {
        await using var db = TestDbFactory.Create();
        var formDefinitionId = Guid.NewGuid();
        var buttonHandler = new CreateBuildFlowButtonDefinitionCommandHandler(db);
        await buttonHandler.Handle(
            new CreateBuildFlowButtonDefinitionCommand(
                null,
                null,
                formDefinitionId,
                null,
                "submit",
                "提交",
                "lucide:send",
                BuildFlowButtonPlacement.FormToolbar,
                "buildflow:button:submit",
                null,
                null,
                null,
                null,
                "[]",
                null,
                10),
            CancellationToken.None);
        await buttonHandler.Handle(
            new CreateBuildFlowButtonDefinitionCommand(
                null,
                null,
                Guid.NewGuid(),
                null,
                "approve",
                "审批",
                "lucide:check",
                BuildFlowButtonPlacement.RowAction,
                "buildflow:button:approve",
                null,
                null,
                null,
                null,
                "[]",
                null,
                20),
            CancellationToken.None);

        var handler = new GetBuildFlowButtonDefinitionListQueryHandler(db);
        var result = await handler.Handle(
            new GetBuildFlowButtonDefinitionListQuery(
                1,
                20,
                null,
                null,
                formDefinitionId,
                null,
                BuildFlowButtonPlacement.FormToolbar,
                null),
            CancellationToken.None);

        result.Total.Should().Be(1);
        result.Items.Should().ContainSingle(x => x.Code == "submit" && x.FormDefinitionId == formDefinitionId);
    }
}