namespace SimpleAdmin.Application;

/// <summary>
/// 实现入职任务查询业务能力。
/// </summary>
public class OnboardingTaskQueryService : IOnboardingTaskQueryService
{
    private readonly SqlSugarScope _db;

    public OnboardingTaskQueryService()
    {
        _db = DbContext.DB;
    }

    /// <summary>
    /// 分页查询后台入职任务。
    /// </summary>
    public Task<SqlSugarPagedList<ObOnboardingTask>> Page(OnboardingTaskPageInput input)
    {
        return _db.Queryable<ObOnboardingTask>()
            .WhereIF(!string.IsNullOrWhiteSpace(input.TaskNo), item => item.TaskNo.Contains(input.TaskNo))
            .WhereIF(!string.IsNullOrWhiteSpace(input.TaskStatus), item => item.TaskStatus == input.TaskStatus)
            .WhereIF(input.CompanyId.HasValue, item => item.CompanyId == input.CompanyId.Value)
            .OrderByDescending(item => item.CreateTime)
            .ToPagedListAsync(input.PageNum, input.PageSize);
    }

    /// <summary>
    /// 查询任务基础信息、人员资料、合同、材料、表单值、链接和审核记录。
    /// </summary>
    public async Task<OnboardingTaskDetailOutput> Detail(BaseIdInput input)
    {
        var task = await _db.Queryable<ObOnboardingTask>().InSingleAsync(input.Id)
            ?? throw Oops.Bah("入职任务不存在");

        var employeeInfo = await _db.Queryable<ObTaskEmployeeInfo>()
            .FirstAsync(item => item.TaskId == task.Id);
        var contracts = await _db.Queryable<ObTaskContract>()
            .Where(item => item.TaskId == task.Id)
            .ToListAsync();
        var materials = await _db.Queryable<ObTaskMaterial>()
            .Where(item => item.TaskId == task.Id)
            .ToListAsync();
        var materialFileIds = materials
            .Select(item => item.FileId)
            .Distinct()
            .ToList();
        var materialFiles = await _db.Queryable<SysFile>()
            .Where(item => materialFileIds.Contains(item.Id))
            .ToListAsync();
        var materialFileMap = materialFiles.ToDictionary(item => item.Id);
        var materialOutputs = materials.Select(material =>
        {
            var output = material.Adapt<OnboardingTaskMaterialDetailOutput>();
            if (materialFileMap.TryGetValue(material.FileId, out var file))
            {
                output.FileName = file.Name;
                output.FileSuffix = file.Suffix;
            }

            return output;
        }).ToList();
        var link = await _db.Queryable<ObTaskLink>()
            .Where(item => item.TaskId == task.Id && item.LinkStatus == "active")
            .OrderByDescending(item => item.CreateTime)
            .FirstAsync();
        var audits = await _db.Queryable<ObTaskAudit>()
            .Where(item => item.TaskId == task.Id)
            .OrderByDescending(item => item.AuditedAt)
            .ToListAsync();

        return new OnboardingTaskDetailOutput
        {
            Task = task,
            EmployeeInfo = employeeInfo,
            Contracts = contracts,
            Materials = materialOutputs,
            Link = link,
            Audits = audits
        };
    }
}