using Admin.NET.Plugin.AiDOP.Dto.S0.Warehouse;
using Admin.NET.Plugin.AiDOP.Entity.S0.Warehouse;
using Admin.NET.Plugin.AiDOP.Infrastructure;
using Microsoft.Extensions.Logging;

namespace Admin.NET.Plugin.AiDOP.Controllers.S0.Warehouse;

/// <summary>
/// S0 雇员主数据（EmployeeMaster 语义）
/// </summary>
[ApiController]
[Route("api/s0/warehouse/employees")]
[AllowAnonymous]
[NonUnify]
public class AdoS0EmployeesController : ControllerBase
{
    private readonly SqlSugarRepository<AdoS0EmployeeMaster> _rep;
    private readonly SqlSugarRepository<AdoS0DepartmentMaster> _deptRep;
    private readonly AdoS0ReferenceChecker _refChecker;
    private readonly ILogger<AdoS0EmployeesController> _logger;

    public AdoS0EmployeesController(
        SqlSugarRepository<AdoS0EmployeeMaster> rep,
        SqlSugarRepository<AdoS0DepartmentMaster> deptRep,
        AdoS0ReferenceChecker refChecker,
        ILogger<AdoS0EmployeesController> logger)
    {
        _rep = rep;
        _deptRep = deptRep;
        _refChecker = refChecker;
        _logger = logger;
    }

    [HttpGet]
    public async Task<IActionResult> GetPagedAsync([FromQuery] AdoS0EmployeeQueryDto q)
    {
        (q.Page, q.PageSize) = PagingGuard.Normalize(q.Page, q.PageSize);

        var query = _rep.AsQueryable()
            .WhereIF(q.CompanyRefId.HasValue, x => x.CompanyRefId == q.CompanyRefId!.Value)
            .WhereIF(q.FactoryRefId.HasValue, x => x.FactoryRefId == q.FactoryRefId!.Value)
            .WhereIF(!string.IsNullOrWhiteSpace(q.DomainCode), x => x.DomainCode == q.DomainCode)
            .WhereIF(!string.IsNullOrWhiteSpace(q.Department), x => x.Department == q.Department)
            .WhereIF(q.IsActive.HasValue, x => x.IsActive == q.IsActive!.Value)
            .WhereIF(!string.IsNullOrWhiteSpace(q.Keyword),
                x => x.Employee.Contains(q.Keyword!) || (x.Name != null && x.Name.Contains(q.Keyword!)));

        var total = await query.CountAsync();
        var list = await query
            .OrderBy(x => x.Employee)
            .Skip((q.Page - 1) * q.PageSize)
            .Take(q.PageSize)
            .ToListAsync();

        await ApplyDeptDescrAsync(list);

        return Ok(new { total, page = q.Page, pageSize = q.PageSize, list });
    }

    [HttpGet("{id:long}")]
    public async Task<IActionResult> GetAsync(long id)
    {
        var item = await _rep.GetByIdAsync(id);
        if (item == null) return NotFound();
        await ApplyDeptDescrAsync(new List<AdoS0EmployeeMaster> { item });
        return Ok(item);
    }

    [HttpPost]
    public async Task<IActionResult> CreateAsync([FromBody] AdoS0EmployeeUpsertDto dto)
    {
        if (await _rep.IsAnyAsync(x => x.FactoryRefId == dto.FactoryRefId && x.Employee == dto.Employee))
            return AdoS0ApiErrors.Conflict(AdoS0ErrorCodes.DuplicateCode, "员工编码已存在");

        // B2：Create 一律严格作用域校验，禁止降级（参 AdoS0MfgRoutingOpDetailsController）。
        var deptResult = await _refChecker.DepartmentExistsInScopeAsync(dto.Department, dto.CompanyRefId, dto.FactoryRefId);
        switch (deptResult)
        {
            case MaterialScopeCheck.NotFound:
                return AdoS0ApiErrors.InvalidReference(AdoS0ErrorCodes.ReferenceNotFound,
                    $"部门编码 '{dto.Department}' 不存在于部门主数据");
            case MaterialScopeCheck.ScopeMiss:
                return AdoS0ApiErrors.InvalidReference(AdoS0ErrorCodes.InvalidReferenceScope,
                    $"部门编码 '{dto.Department}' 不属于当前公司/工厂 (CompanyRefId={dto.CompanyRefId}, FactoryRefId={dto.FactoryRefId})");
        }

        var entity = MapToEntity(dto);
        entity.CreateTime = DateTime.Now;
        await _rep.AsInsertable(entity).ExecuteReturnEntityAsync();
        return Ok(entity);
    }

    [HttpPut("{id:long}")]
    public async Task<IActionResult> UpdateAsync(long id, [FromBody] AdoS0EmployeeUpsertDto dto)
    {
        var entity = await _rep.GetByIdAsync(id);
        if (entity == null) return NotFound();

        if (await _rep.IsAnyAsync(x => x.Id != id && x.FactoryRefId == dto.FactoryRefId && x.Employee == dto.Employee))
            return AdoS0ApiErrors.Conflict(AdoS0ErrorCodes.DuplicateCode, "员工编码已存在");

        // B2 + 历史兼容降级（D-03 严格条件，参 AdoS0MfgRoutingOpDetailsController）
        var deptResult = await _refChecker.DepartmentExistsInScopeAsync(dto.Department, dto.CompanyRefId, dto.FactoryRefId);
        if (deptResult == MaterialScopeCheck.NotFound)
            return AdoS0ApiErrors.InvalidReference(AdoS0ErrorCodes.ReferenceNotFound,
                $"部门编码 '{dto.Department}' 不存在于部门主数据");

        if (deptResult == MaterialScopeCheck.ScopeMiss)
        {
            // 降级条件（全部满足才允许）：
            //   1. 是 Update（已满足）
            //   2. DB 原记录 scope 为 0/0
            //   3. 本次未修改 Department 引用值
            var originScopeEmpty = entity.CompanyRefId == 0 && entity.FactoryRefId == 0;
            var departmentUnchanged = string.Equals(entity.Department, dto.Department?.Trim(), StringComparison.Ordinal);

            if (originScopeEmpty && departmentUnchanged)
            {
                _logger.LogWarning(
                    "[B2 Downgrade] Table={TableName} PrimaryKey={PrimaryKey} ReferenceField={ReferenceField} " +
                    "OldValue={OldValue} NewValue={NewValue} CompanyRefId={CompanyRefId} FactoryRefId={FactoryRefId} " +
                    "DowngradeReason={DowngradeReason}",
                    "EmployeeMaster", entity.Id, "Department",
                    entity.Department, dto.Department,
                    dto.CompanyRefId, dto.FactoryRefId,
                    "LegacyRecord_OriginScopeZero_DepartmentUnchanged");
                // 放行，继续执行写入
            }
            else
            {
                return AdoS0ApiErrors.InvalidReference(AdoS0ErrorCodes.InvalidReferenceScope,
                    $"部门编码 '{dto.Department}' 不属于当前公司/工厂 (CompanyRefId={dto.CompanyRefId}, FactoryRefId={dto.FactoryRefId})");
            }
        }

        entity.CompanyRefId = dto.CompanyRefId;
        entity.FactoryRefId = dto.FactoryRefId;
        entity.DomainCode = dto.DomainCode ?? string.Empty;
        entity.Employee = dto.Employee;
        entity.Name = dto.Name;
        entity.Sex = dto.Sex;
        entity.Phone = dto.Phone;
        entity.Email = dto.Email;
        entity.BirthDate = dto.BirthDate;
        entity.Department = dto.Department;
        entity.DateEmployed = dto.DateEmployed;
        entity.EmploymentStatus = dto.EmploymentStatus;
        entity.MaritalStatus = dto.MaritalStatus;
        entity.JobTitle = dto.JobTitle;
        entity.DateTerminated = dto.DateTerminated;
        entity.WorkCtr = dto.WorkCtr;
        entity.CarId = dto.CarId;
        entity.DefaultWorkLocation = dto.DefaultWorkLocation;
        entity.IsActive = dto.IsActive;
        entity.UpdateUser = dto.UpdateUser;
        entity.UpdateTime = DateTime.Now;

        await _rep.AsUpdateable(entity).ExecuteCommandAsync();
        return Ok(entity);
    }

    [HttpDelete("{id:long}")]
    public async Task<IActionResult> DeleteAsync(long id)
    {
        var item = await _rep.GetByIdAsync(id);
        if (item == null) return NotFound();
        await _rep.DeleteAsync(item);
        return Ok(new { message = "删除成功" });
    }

    private static AdoS0EmployeeMaster MapToEntity(AdoS0EmployeeUpsertDto dto) => new()
    {
        CompanyRefId = dto.CompanyRefId,
        FactoryRefId = dto.FactoryRefId,
        DomainCode = dto.DomainCode ?? string.Empty,
        Employee = dto.Employee,
        Name = dto.Name,
        Sex = dto.Sex,
        Phone = dto.Phone,
        Email = dto.Email,
        BirthDate = dto.BirthDate,
        Department = dto.Department,
        DateEmployed = dto.DateEmployed,
        EmploymentStatus = dto.EmploymentStatus,
        MaritalStatus = dto.MaritalStatus,
        JobTitle = dto.JobTitle,
        DateTerminated = dto.DateTerminated,
        WorkCtr = dto.WorkCtr,
        CarId = dto.CarId,
        DefaultWorkLocation = dto.DefaultWorkLocation,
        IsActive = dto.IsActive,
        CreateUser = dto.CreateUser
    };

    private async Task ApplyDeptDescrAsync(List<AdoS0EmployeeMaster> employees)
    {
        if (employees.Count == 0) return;

        var domainCodes = employees.Select(e => e.DomainCode).Distinct().ToList();
        var depts = await _deptRep.AsQueryable()
            .Where(d => domainCodes.Contains(d.DomainCode))
            .ToListAsync();

        foreach (var emp in employees)
        {
            var dept = depts.Find(d =>
                string.Equals(d.DomainCode, emp.DomainCode, StringComparison.OrdinalIgnoreCase)
                && string.Equals(d.Department, emp.Department, StringComparison.OrdinalIgnoreCase));
            emp.DepartDescr = dept?.Descr;
            // JobTitle 直接使用存储值作为展示（GeneralizedCodeMaster 暂不关联）
            emp.JobTitleDisplay = emp.JobTitle;
        }
    }
}