11 changed files with 470 additions and 347 deletions
@ -1,10 +0,0 @@
|
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enum Operation { |
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/// 创建 |
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create, |
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/// 修改 |
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update, |
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/// 删除 |
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delete, |
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} |
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@ -0,0 +1,98 @@
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import 'package:problem_check_system/data/models/image_metadata_model.dart'; |
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import 'package:problem_check_system/data/models/problem_model.dart'; |
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import 'package:uuid/uuid.dart'; |
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enum ProblemSyncStatus { |
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/// 未跟踪 - 需要被移除的记录（如本地删除但从未同步过） |
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untracked, |
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/// 已同步 - 与服务器完全一致（类似git的unmodified） |
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synced, |
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/// 待创建 - 新问题，需要上传到服务器（类似git的untracked → staged） |
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pendingCreate, |
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/// 待更新 - 已修改的问题，需要更新到服务器（类似git的modified → staged） |
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pendingUpdate, |
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/// 待删除 - 已标记删除，需要从服务器删除（类似git的deleted → staged） |
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pendingDelete, |
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} |
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/// 问题状态管理器 - 类似 git add/git commit |
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class ProblemStateManager { |
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/// 静态对象uuid |
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static final Uuid _uuid = Uuid(); |
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/// 创建新问题（类似创建新文件） |
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static Problem createNewProblem({ |
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required String description, |
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required String location, |
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required List<ImageMetadata> imageUrls, |
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}) { |
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return Problem( |
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id: _uuid.v4(), |
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description: description, |
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location: location, |
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imageUrls: imageUrls, |
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creationTime: DateTime.now(), |
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lastModifiedTime: DateTime.now(), |
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syncStatus: ProblemSyncStatus.pendingCreate, |
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); |
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} |
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/// 修改问题内容（类似编辑文件） |
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static Problem modifyProblem(Problem problem) { |
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final newStatus = problem.syncStatus == ProblemSyncStatus.synced |
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? ProblemSyncStatus |
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.pendingUpdate // 已同步的改为待更新 |
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: problem.syncStatus; // 保持原有待处理状态 |
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return problem.copyWith( |
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syncStatus: newStatus, |
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lastModifiedTime: DateTime.now(), |
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); |
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} |
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/// 标记问题为删除 |
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static Problem markForDeletion(Problem problem) { |
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switch (problem.syncStatus) { |
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case ProblemSyncStatus.pendingCreate: |
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// 待创建的问题 → 未跟踪（直接移除） |
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return problem.copyWith( |
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syncStatus: ProblemSyncStatus.untracked, |
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lastModifiedTime: DateTime.now(), |
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); |
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case ProblemSyncStatus.synced: |
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case ProblemSyncStatus.pendingUpdate: |
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// 已同步或待更新的问题 → 待删除（需要服务器操作） |
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return problem.copyWith( |
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syncStatus: ProblemSyncStatus.pendingDelete, |
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lastModifiedTime: DateTime.now(), |
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); |
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case ProblemSyncStatus.untracked: |
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case ProblemSyncStatus.pendingDelete: |
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// 已经是删除相关状态，无需变化 |
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return problem; |
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} |
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} |
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|
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/// 撤销删除（类似 git reset） |
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static Problem undoDeletion(Problem problem) { |
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if (problem.syncStatus == ProblemSyncStatus.pendingDelete) { |
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return problem.copyWith( |
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syncStatus: ProblemSyncStatus.pendingUpdate, |
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lastModifiedTime: DateTime.now(), |
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); |
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} |
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return problem; |
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} |
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/// 同步成功后的状态更新（类似 git commit 成功） |
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static Problem markAsSynced(Problem problem) { |
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return problem.copyWith( |
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syncStatus: ProblemSyncStatus.synced, |
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lastModifiedTime: DateTime.now(), |
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); |
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} |
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} |
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@ -1,7 +0,0 @@
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enum SyncStatus { |
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/// 已同步，本地无修改 |
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synced, |
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/// 未同步到服务器 |
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notSynced, |
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} |
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