[PB-2394] feat: switch to incrementally calculated usage

[apsantiso]

⚠️ We're not going to merge this yet (August 27)

Branch off: #668

The original branch just started saving the file sizes delta in the usages table. This PR implements the aggregation of all the records in usages to calculate the current usage.

The target branch is set to feat/incremental-usage-1 for the time being just to show the differences between the branches, but this PR should point to master when feat/incremental-usage-1 gets merged.

You can check the performance of the aggregation, here it is the raw query:

WITH yearly_years AS (
    SELECT DISTINCT date_trunc('year', period) AS year
    FROM public.usages
    WHERE type = 'yearly' AND user_id = :userUuid
),
aggregated_data AS (
    -- Use yearly data where it exists
    SELECT
        date_trunc('year', period) AS year,
        SUM(delta) AS total_delta
    FROM public.usages
    WHERE type = 'yearly' AND user_id = :userUuid
    GROUP BY date_trunc('year', period)
    
    UNION ALL
    
    -- Use monthly + daily data for years without yearly data
    SELECT
        date_trunc('year', period) AS year,
        SUM(delta) AS total_delta
    FROM public.usages
    WHERE type IN ('monthly', 'daily')
      AND user_id = :userUuid
      AND date_trunc('year', period) NOT IN (SELECT year FROM yearly_years)
    GROUP BY date_trunc('year', period)
)
SELECT
    SUM(CASE WHEN year < date_trunc('year', CURRENT_DATE) THEN total_delta ELSE 0 END) AS historical_total,
    SUM(CASE WHEN year = date_trunc('year', CURRENT_DATE) THEN total_delta ELSE 0 END) AS current_year_total
FROM aggregated_data;

[sg-gs]

Why are you grouping by year if it is a yearly record? The record itself is an aggregation. Am I missing something?

[sg-gs]

Same question here

[sg-gs]

Same question here

[sg-gs]

And here, regarding to the year

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
90.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

This PR is stale because it has been open for more than 15 days with no activity.