using YD_Event.Application.Project.Dtos;
using YD_Event.Core.Entities;
using Mapster;
using SqlSugar;

namespace YD_Event.Application.Project;

/// <summary>
/// 项目管理
/// </summary>
public class ProjectService : BaseService<YD_Event.Core.Entities.Project>, ITransient
{
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Project> _repository;
    private readonly ISqlSugarRepository<ProjectGroup> _groupRepository;
    private readonly ISqlSugarRepository<ProjectType> _typeRepository;
    private readonly IIdGenerator _idGenerator;

    public ProjectService(
        ISqlSugarRepository<YD_Event.Core.Entities.Project> repository,
        ISqlSugarRepository<ProjectGroup> groupRepository,
        ISqlSugarRepository<ProjectType> typeRepository,
        IIdGenerator idGenerator) : base(repository)
    {
        _repository = repository;
        _groupRepository = groupRepository;
        _typeRepository = typeRepository;
        _idGenerator = idGenerator;
    }

    /// <summary>
    /// 项目分页查询
    /// </summary>
    [DisplayName("项目分页查询")]
    public async Task<PageResult<ProjectDto>> Page(ProjectQueryInput input)
    {
        var query = _repository.AsQueryable()
            .LeftJoin<ProjectType>((p, pt) => p.ProjectTypeId == pt.Id)
            .WhereIF(!string.IsNullOrWhiteSpace(input.ProjectName), (p, pt) => p.Name.Contains(input.ProjectName))
            .WhereIF(input.ProjectTypeId.HasValue, (p, pt) => p.ProjectTypeId == input.ProjectTypeId)
            .OrderByDescending((p, pt) => p.Id);

        var result = await query.Select((p, pt) => new ProjectDto
        {
            Id = p.Id,
            Name = p.Name,
            ProjectTypeId = p.ProjectTypeId,
            ProjectTypeName = pt.Name,
            CompletionCount = p.CompletionCount,
            Fee = p.Fee,
            DurationMinutes = p.DurationMinutes,
            DurationSeconds = p.DurationSeconds,
            VenueCount = p.VenueCount,
            SortIndex = p.SortIndex,
            Status = p.Status,
            DeleteMark = p.DeleteMark,
            CreatedUserId = p.CreatedUserId,
            CreatedTime = p.CreatedTime,
            UpdatedUserId = p.UpdatedUserId,
            UpdatedTime = p.UpdatedTime
        })
        .ToPagedListAsync(input);

        return result;
    }

    /// <summary>
    /// 添加项目
    /// </summary>
    [DisplayName("添加项目")]
    [UnitOfWork]
    public async Task Add(AddProjectInput input)
    {
        // 检查项目名称是否重复
        var isExist = await _repository.IsAnyAsync(x => x.Name == input.Name);
        if (isExist) throw new InvalidOperationException("该项目名称已存在");

        var entity = input.Adapt<YD_Event.Core.Entities.Project>();
        entity.Id = _idGenerator.NewLong();
        entity.CreatedTime = DateTime.Now;
        entity.Status = Core.Enum.AvailabilityStatus.Enable;
        
        await _repository.InsertAsync(entity);

        if (input.Groups != null && input.Groups.Any())
        {
            var groups = input.Groups.Select(g => 
            {
                var group = g.Adapt<ProjectGroup>();
                group.Id = _idGenerator.NewLong();
                group.ProjectId = entity.Id;
                return group;
            }).ToList();
            await _groupRepository.InsertRangeAsync(groups);
        }
    }

    /// <summary>
    /// 更新项目
    /// </summary>
    [DisplayName("更新项目")]
    [UnitOfWork]
    public async Task Update(UpdateProjectInput input)
    {
        var entity = await _repository.GetByIdAsync(input.Id);
        if (entity == null) throw new InvalidOperationException("项目不存在");

        // 如果修改了名称，检查是否重复
        if (entity.Name != input.Name)
        {
             var isExist = await _repository.IsAnyAsync(x => x.Name == input.Name && x.Id != input.Id);
             if (isExist) throw new InvalidOperationException("该项目名称已存在");
        }

        input.Adapt(entity);
        entity.UpdatedTime = DateTime.Now;
        await _repository.UpdateAsync(entity);

        // Update groups: Delete old, Insert new
        await _groupRepository.DeleteAsync(x => x.ProjectId == entity.Id);

        if (input.Groups != null && input.Groups.Any())
        {
            var groups = input.Groups.Select(g => 
            {
                var group = g.Adapt<ProjectGroup>();
                group.Id = _idGenerator.NewLong();
                group.ProjectId = entity.Id;
                return group;
            }).ToList();
            await _groupRepository.InsertRangeAsync(groups);
        }
    }

    /// <summary>
    /// 删除项目
    /// </summary>
    [DisplayName("删除项目")]
    [UnitOfWork]
    public async Task Delete(List<long> ids)
    {
        await _repository.DeleteAsync(x => ids.Contains(x.Id));
        await _groupRepository.DeleteAsync(x => ids.Contains(x.ProjectId));
    }

    /// <summary>
    /// 获取项目详情
    /// </summary>
    [DisplayName("获取项目详情")]
    public async Task<ProjectDto> Detail(long id)
    {
        var p = await _repository.GetByIdAsync(id);
        if (p == null) throw new InvalidOperationException("项目不存在");
        
        var dto = p.Adapt<ProjectDto>();
        
        var type = await _typeRepository.GetByIdAsync(p.ProjectTypeId);
        if (type != null)
        {
            dto.ProjectTypeName = type.Name;
        }
        
        var groups = await _groupRepository.GetListAsync(x => x.ProjectId == id);
        dto.Groups = groups.Adapt<List<ProjectGroupDto>>();
        
        return dto;
    }
}