getCalendarSchedule Function

The getCalendarSchedule function is designed to retrieve or generate a calendar schedule for a specific user and date. It uses caching mechanisms to optimize retrieval and minimizes regeneration of schedules when possible.

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Function Definition

func getCalendarSchedule(
    curUser *entity.UserProfileTable, 
    calcDate string, 
    force, cacheFollowForce bool, 
    cache *caching.AllCacheStruct
) *entity.CalendarScheduleTable

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Parameters

Parameter	Type	Description
curUser	*entity.UserProfileTable	The profile of the user for whom the schedule is to be retrieved or generated.
calcDate	string	The date for which the schedule is needed, formatted as a string.
force	bool	If true, forces the regeneration of the calendar schedule regardless of cache availability.
cacheFollowForce	bool	Specifies whether the caching mechanism should respect the force flag during operations.
cache	*caching.AllCacheStruct	A cache object to store and retrieve schedule data for efficiency.

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Return Value

Returns a pointer to an entity.CalendarScheduleTable object, which represents the calendar schedule for the specified user and date. If the schedule could not be generated or retrieved, the function returns nil.

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Function Logic

1. Force Mode Check:

   • If the force flag is true, the schedule is generated using GenerateCalendarScheduleOnePersonOneDate. The generated schedule is not retrieved from the cache.

2. Cache Lookup:

   • If force is false, the function attempts to find the schedule in the cache using cache.CalendarSchedules.FindCalendarSchedulesByPersonByDate.

3. Schedule Generation:

   • If no schedule is found in the cache:
     • The function generates a new schedule using GenerateCalendarScheduleOnePersonOneDate.
     • If the generation is successful and the schedule is valid, it is upserted into the cache using cache.CalendarSchedules.UpsertOne.

4. Return Schedule:

   • The function returns the retrieved or generated schedule.

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Code Comments

• Cache Integration:

  • The function heavily relies on caching mechanisms to improve efficiency and avoid unnecessary regeneration of schedules.

• Error Handling:

  • Minimal error handling is present. It logs and skips further operations if schedule generation fails.

• Future Considerations:

  • A TODO note suggests verifying the correctness of the UpsertOne operation, especially regarding handling CalendarScheduleDetails.

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Example Usage

user := &entity.UserProfileTable{Id: "123", FullName: "John Doe"}
date := "2024-12-08"
forceRegeneration := false
cacheRespectForce := true
cache := caching.NewAllCache()

schedule := getCalendarSchedule(user, date, forceRegeneration, cacheRespectForce, cache)

if schedule != nil {
    fmt.Println("Schedule successfully retrieved or generated.")
} else {
    fmt.Println("Failed to retrieve or generate schedule.")
}

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Dependencies

• GenerateCalendarScheduleOnePersonOneDate: Function to generate a new calendar schedule.
• timedate.DateStrToTime: Converts a date string to a time.Time object.
• cache.CalendarSchedules.FindCalendarSchedulesByPersonByDate: Retrieves a schedule from the cache.
• cache.CalendarSchedules.UpsertOne: Updates or inserts a schedule into the cache.

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Potential Improvements

1. Enhanced Error Handling:

   • Log meaningful error messages if schedule generation or caching operations fail.

2. Performance Optimization:

   • Evaluate the force logic to balance between unnecessary regenerations and avoiding stale data.

3. Unit Tests:

   • Add unit tests to ensure the function handles edge cases effectively, such as invalid dates or cache failures.

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