[5.6 Manual Food DB] Sync Option to Merge with Online DB

[fIyingPhoenix]

Milestone: Milestone 5: Infrastructure & Tools
Category: 5.6 Manual Food DB
Task: Implement functionality to sync offline food items with the online database and merge data effectively.

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Description

This task involves implementing the feature that syncs offline food items with the online database. The sync process must handle merging data from the offline local database with the online database, ensuring no data loss or duplication.

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Subtasks:

• Sync Mechanism Design:
  • Design a mechanism to compare local and server data (timestamps, versioning, etc.)
  • Decide how conflicts between local and server food items will be resolved (e.g., overwrite, merge, or user intervention)
• Data Comparison Logic:
  • Implement logic to identify if a local food item already exists on the server or is new
  • Handle the case where the food item is modified both locally and on the server
• Conflict Resolution:
  • If a conflict occurs (e.g., the same food item has been modified both locally and online), define the conflict resolution strategy (e.g., prioritize server data, prioritize local data, ask user for resolution)
• Sync Triggering:
  • Implement a way to trigger the sync process automatically when the app goes online
  • Allow the user to manually trigger a sync process if desired
• UI Feedback:
  • Provide user feedback regarding the sync process (e.g., "Syncing...", "Sync complete", "Sync failed")
  • Inform the user if there are conflicts that need attention
• Testing:
  • Test the sync functionality to ensure it works as expected when switching between offline and online modes
  • Test conflict resolution scenarios to ensure correct handling of data inconsistencies
  • Test the merging of new and modified data during sync
• Documentation:
  • Document the sync process and conflict resolution strategy
  • Provide instructions for users on how the sync and conflict resolution works

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Technical Considerations:

• Use timestamps or versioning to track the most recent data changes
• Consider conflict resolution strategies carefully to avoid overwriting important data
• Implement a background sync process or use a manual sync button depending on the app’s use case

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Acceptance Criteria:

• Offline food items are merged with the online database when syncing
• The sync process handles conflicts without data loss
• Users are informed of the sync status and any conflicts that require attention
• The sync functionality works smoothly in both online and offline modes