namespace SimpleAdmin.Application;

/// <summary>
/// 实现入职业务公司业务能力。
/// </summary>
public class OnboardingCompanyService : DbRepository<ObCompany>, IOnboardingCompanyService
{
    /// <summary>
    /// 分页查询入职业务公司。
    /// </summary>
    public async Task<SqlSugarPagedList<ObCompany>> Page(OnboardingCompanyPageInput input)
    {
        return await Context.Queryable<ObCompany>()
            .WhereIF(!string.IsNullOrWhiteSpace(input.CompanyCode), it => it.CompanyCode.Contains(input.CompanyCode))
            .WhereIF(!string.IsNullOrWhiteSpace(input.CompanyName), it => it.CompanyName.Contains(input.CompanyName))
            .WhereIF(!string.IsNullOrWhiteSpace(input.Status), it => it.Status == input.Status)
            .OrderByIF(!string.IsNullOrWhiteSpace(input.SortField), $"{input.SortField} {input.SortOrder}")
            .OrderBy(it => it.CreateTime)
            .ToPagedListAsync(input.PageNum, input.PageSize);
    }

    /// <summary>
    /// 查询全部已启用的入职业务公司。
    /// </summary>
    public Task<List<ObCompany>> ListEnabled()
    {
        return Context.Queryable<ObCompany>()
            .Where(it => it.Status == "enable")
            .OrderBy(it => it.CompanyName)
            .ToListAsync();
    }

    /// <summary>
    /// 查询公司详情。
    /// </summary>
    public async Task<ObCompany> Detail(BaseIdInput input)
    {
        return await GetByIdAsync(input.Id) ?? throw Oops.Bah("公司不存在");
    }

    /// <summary>
    /// 新增入职业务公司。
    /// </summary>
    public async Task Add(OnboardingCompanyAddInput input)
    {
        await EnsureCodeUnique(input.CompanyCode, 0);
        await InsertAsync(input.Adapt<ObCompany>());
    }

    /// <summary>
    /// 编辑入职业务公司。
    /// </summary>
    public async Task Edit(OnboardingCompanyEditInput input)
    {
        await Detail(new BaseIdInput { Id = input.Id });
        await EnsureCodeUnique(input.CompanyCode, input.Id);
        await UpdateAsync(input.Adapt<ObCompany>());
    }

    /// <summary>
    /// 删除未被岗位、任务或员工引用的公司。
    /// </summary>
    public async Task Delete(BaseIdListInput input)
    {
        if (input.Ids.Count == 0)
            return;

        var hasPositions = await Context.Queryable<ObPosition>()
            .AnyAsync(it => input.Ids.Contains(it.CompanyId));
        if (hasPositions)
            throw Oops.Bah("公司下仍有岗位，不能删除");

        var hasTasks = await Context.Queryable<ObOnboardingTask>()
            .AnyAsync(it => input.Ids.Contains(it.CompanyId));
        if (hasTasks)
            throw Oops.Bah("公司已有入职任务，不能删除");

        var hasEmployees = await Context.Queryable<ObEmployee>()
            .AnyAsync(it => input.Ids.Contains(it.CompanyId));
        if (hasEmployees)
            throw Oops.Bah("公司已有正式员工，不能删除");

        await DeleteByIdsAsync(input.Ids.Cast<object>().ToArray());
    }

    private async Task EnsureCodeUnique(string code, long id)
    {
        var exists = await Context.Queryable<ObCompany>()
            .AnyAsync(it => it.CompanyCode == code && it.Id != id);
        if (exists)
            throw Oops.Bah("公司编码已存在");
    }
}