jtricerolph
7ab048931f
Rate changes are often scheduled ahead of time or confirmed by finance after the fact and backdated — assign-tariff already supported any effective_from date, but cost-calc previously priced a whole period at a single tariff (whichever was in force on the period-end date), silently mispricing the days on the other side of a change. getTariffSegments() finds every tariff assignment overlapping a date range; getMeterCostForPeriod/getMeterEstimateForPeriod now split consumption pro-rata by day count across segments and price each against its own tariff, summing to the period total. Estimates project the remaining days across a future-scheduled change the same way, rather than assuming today's tariff holds for the rest of the period. Also consolidates internal.js's cost/estimate routes (previously their own duplicate calc) onto the same shared functions reports.js and estimates.js use, so the Directors' report can't drift from the in-app numbers. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> |
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