106 lines
4.6 KiB
C#
106 lines
4.6 KiB
C#
namespace SimpleAdmin.Application;
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/// <summary>
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/// 实现入职合同文件生成业务能力。
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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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/// 根据已锁定的模板版本和变量快照生成任务合同 DOCX 文件。
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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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if (task.TaskStatus != OnboardingTaskStatus.Approved)
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throw Oops.Bah("仅审核通过的任务可生成归档合同");
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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 variables = await _db.Queryable<ObTaskContractVariable>()
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.Where(x => x.TaskContractId == contract.Id)
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.ToListAsync();
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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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// 合同只读取任务变量快照，确保模板或员工档案后续修改不会影响已生成文件。
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var rendered = ReplaceDocxText(
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sourceBytes.ToArray(),
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variables.ToDictionary(x => x.VariableCode, x => x.VariableValue ?? string.Empty));
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var name = $"{task.TaskNo}_{contract.ContractName}.docx";
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var fileId = await _fileService.StoreGeneratedFile(source.Engine, name, rendered);
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contract.GeneratedDocxFileId = fileId;
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contract.GeneratedAt = DateTime.Now;
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await _db.Updateable(contract).ExecuteCommandAsync();
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return fileId;
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}
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private static byte[] ReplaceDocxText(byte[] docx, Dictionary<string, string> values)
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{
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using var input = new MemoryStream(docx);
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using var archive = new global::System.IO.Compression.ZipArchive(
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input,
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global::System.IO.Compression.ZipArchiveMode.Read);
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using var output = new MemoryStream();
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using var target = new global::System.IO.Compression.ZipArchive(
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output,
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global::System.IO.Compression.ZipArchiveMode.Create,
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true);
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// DOCX 本质是 ZIP 包，仅替换正文、页眉和页脚 XML 中的文本节点，其他资源原样复制。
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foreach (var entry in archive.Entries)
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{
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var next = target.CreateEntry(entry.FullName, global::System.IO.Compression.CompressionLevel.Optimal);
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using var reader = entry.Open();
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using var writer = next.Open();
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var isWordTextXml = entry.FullName == "word/document.xml"
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|| ((entry.FullName.StartsWith("word/header") || entry.FullName.StartsWith("word/footer"))
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&& entry.FullName.EndsWith(".xml"));
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if (!isWordTextXml)
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{
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reader.CopyTo(writer);
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continue;
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}
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using var textReader = new StreamReader(reader);
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var document = global::System.Xml.Linq.XDocument.Parse(textReader.ReadToEnd());
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var word = global::System.Xml.Linq.XNamespace.Get("http://schemas.openxmlformats.org/wordprocessingml/2006/main");
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foreach (var node in document.Descendants(word + "t"))
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{
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foreach (var item in values)
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node.Value = node.Value.Replace("{{" + item.Key + "}}", item.Value ?? string.Empty);
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}
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using var textWriter = new StreamWriter(writer);
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textWriter.Write(document.ToString(global::System.Xml.Linq.SaveOptions.DisableFormatting));
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}
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return output.ToArray();
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}
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}
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