90 lines
4.3 KiB
C#
90 lines
4.3 KiB
C#
namespace SimpleAdmin.Application;
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/// <summary>
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/// 实现入职合同预览和归档 DOCX 文件生成能力。
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/// </summary>
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public class OnboardingContractDocumentService : IOnboardingContractDocumentService
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{
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private readonly SqlSugarScope _db;
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private readonly IFileService _fileService;
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public OnboardingContractDocumentService(IFileService fileService)
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{
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_db = DbContext.DB;
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_fileService = fileService;
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}
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/// <summary>
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/// 根据锁定的模板版本和任务变量快照生成已替换变量的合同 DOCX。
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/// </summary>
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public async Task<long> Generate(OnboardingGenerateContractInput input)
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{
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var contract = await _db.Queryable<ObTaskContract>().InSingleAsync(input.TaskContractId)
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?? throw Oops.Bah("任务合同不存在");
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var task = await _db.Queryable<ObOnboardingTask>().InSingleAsync(contract.TaskId)
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?? throw Oops.Bah("入职任务不存在");
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var statusAllowsGeneration = task.TaskStatus == OnboardingTaskStatus.PendingFill
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|| task.TaskStatus == OnboardingTaskStatus.Rejected
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|| task.TaskStatus == OnboardingTaskStatus.Reviewing
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|| task.TaskStatus == OnboardingTaskStatus.Approved;
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if (!statusAllowsGeneration)
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throw Oops.Bah("当前任务状态不能生成合同");
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if (contract.GeneratedDocxFileId.HasValue)
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return contract.GeneratedDocxFileId.Value;
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var version = await _db.Queryable<ObContractTemplateVersion>().InSingleAsync(contract.TemplateVersionId)
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?? throw Oops.Bah("合同版本不存在");
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var source = await _db.Queryable<SysFile>().InSingleAsync(version.SourceDocxFileId)
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?? throw Oops.Bah("合同源文件不存在");
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var definitions = await _db.Queryable<ObTemplateVariable>()
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.Where(item => item.TemplateVersionId == version.Id)
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.ToListAsync();
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var variables = await _db.Queryable<ObTaskContractVariable>()
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.Where(item => item.TaskContractId == contract.Id)
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.ToListAsync();
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var duplicateVariable = variables
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.GroupBy(item => item.VariableCode, StringComparer.OrdinalIgnoreCase)
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.FirstOrDefault(group => group.Count() > 1);
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if (duplicateVariable != null)
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{
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throw Oops.Bah(
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$"合同变量快照“{duplicateVariable.Key}”存在重复数据，请联系管理员修复后重试");
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}
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var missing = definitions
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.Where(item => item.Required)
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.FirstOrDefault(definition => string.IsNullOrWhiteSpace(
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variables.FirstOrDefault(variable => variable.VariableCode == definition.VariableCode)?.VariableValue));
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if (missing != null)
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throw Oops.Bah($"合同变量“{missing.VariableName}”尚未填写，暂时不能预览合同");
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var sourceResult = await _fileService.Download(new BaseIdInput { Id = source.Id })
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?? throw Oops.Bah("无法读取合同源文件");
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await using var sourceStream = sourceResult.FileStream;
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using var sourceBytes = new MemoryStream();
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await sourceStream.CopyToAsync(sourceBytes);
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var rendered = DocxTemplateProcessor.Render(
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sourceBytes.ToArray(),
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variables.ToDictionary(
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item => item.VariableCode,
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item => item.VariableValue ?? string.Empty,
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StringComparer.OrdinalIgnoreCase));
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var generatedAt = DateTime.Now;
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// 在文件名中加入生成批次，避免手机系统把同名的新合同误认为历史下载文件。
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var name = $"{task.TaskNo}_{contract.ContractName}_{generatedAt:yyyyMMddHHmmssfff}.docx";
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var fileId = await _fileService.StoreGeneratedFile(
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SysDictConst.FILE_ENGINE_ALIYUN_OSS,
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name,
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rendered);
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contract.GeneratedDocxFileId = fileId;
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contract.GeneratedAt = generatedAt;
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contract.ContractStatus = task.TaskStatus == OnboardingTaskStatus.Approved
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? TaskContractStatus.OfflinePendingSign
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: TaskContractStatus.PendingConfirm;
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await _db.Updateable(contract).ExecuteCommandAsync();
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return fileId;
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}
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}
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