using Admin.NET.Plugin.ApprovalFlow;
using Admin.NET.Plugin.ApprovalFlow.Service;

namespace Admin.NET.Plugin.AiDOP.Order;

/// <summary>
/// 合同评审审批业务回调（与流程定义 BizType = CONTRACT_REVIEW 一致）
/// </summary>
public class ContractReviewBizHandler : IFlowBizHandler, ITransient
{
    public string BizType => "CONTRACT_REVIEW";

    private readonly SqlSugarRepository<ContractReview> _reviewRep;

    public ContractReviewBizHandler(SqlSugarRepository<ContractReview> reviewRep)
    {
        _reviewRep = reviewRep;
    }

    public async Task OnFlowStarted(long bizId, long instanceId)
    {
        var id = (int)bizId;
        var now = DateTime.Now;
        var row = await _reviewRep.GetByIdAsync(id);
        if (row == null) return;

        row.FlowStatus = "reviewing";
        row.CurrentStage = 1;
        row.CurrentDept = "审批流";
        row.UpdateTime = now;
        await _reviewRep.UpdateAsync(row);
    }

    public async Task OnFlowCompleted(long bizId, long instanceId, FlowInstanceStatusEnum finalStatus, long? lastApproverId)
    {
        var id = (int)bizId;
        var now = DateTime.Now;
        var row = await _reviewRep.GetByIdAsync(id);
        if (row == null) return;

        switch (finalStatus)
        {
            case FlowInstanceStatusEnum.Approved:
                row.FlowStatus = "completed";
                row.CurrentStage = 5;
                row.CurrentDept = "已完成";
                break;
            case FlowInstanceStatusEnum.Rejected:
            case FlowInstanceStatusEnum.Terminated:
                row.FlowStatus = "rejected";
                row.CurrentStage = 0;
                row.CurrentDept = null;
                break;
            case FlowInstanceStatusEnum.Cancelled:
                row.FlowStatus = "draft";
                row.CurrentStage = 0;
                row.CurrentDept = null;
                break;
            default:
                row.FlowStatus = "draft";
                row.CurrentStage = 0;
                row.CurrentDept = null;
                break;
        }

        row.UpdateTime = now;
        await _reviewRep.UpdateAsync(row);
    }

    public Task OnNodeCompleted(long bizId, long instanceId, string nodeId, string nodeName, long? approverUserId)
    {
        return Task.CompletedTask;
    }

    public async Task<Dictionary<string, object>> GetBizData(long bizId)
    {
        var row = await _reviewRep.GetByIdAsync((int)bizId);
        if (row == null) return new Dictionary<string, object>();

        var winRateLevel = row.WinRate switch
        {
            "高" => 3,
            "中" => 2,
            "低" => 1,
            _ => 0,
        };

        return new Dictionary<string, object>
        {
            ["currentStage"] = row.CurrentStage ?? 0,
            ["winRateLevel"] = winRateLevel,
            ["hasCrmNo"] = string.IsNullOrWhiteSpace(row.CrmNo) ? 0 : 1,
        };
    }
}