# Fixed asset dynamics
# CapEx is visible in the main asset cube
rule AssetPL::Account.CapEx:AssetType.*:Year.*:Scenario.* = AssetDrivers::[Driver.CapEx]

# Gross block: opening balance plus new CapEx
# Base year is explicit; later years are explicit recurrence rules to avoid overlap.
rule AssetPL::Account.GrossBlock:AssetType.*:Year.2026:Scenario.* = AssetDrivers::[Driver.OpeningGrossBlock] + AssetPL::[Account.CapEx]
rule AssetPL::Account.GrossBlock:AssetType.*:Year.2027:Scenario.* = AssetPL::Account.GrossBlock:Year[PREV] + AssetPL::[Account.CapEx]
rule AssetPL::Account.GrossBlock:AssetType.*:Year.2028:Scenario.* = AssetPL::Account.GrossBlock:Year[PREV] + AssetPL::[Account.CapEx]
rule AssetPL::Account.GrossBlock:AssetType.*:Year.2029:Scenario.* = AssetPL::Account.GrossBlock:Year[PREV] + AssetPL::[Account.CapEx]
rule AssetPL::Account.GrossBlock:AssetType.*:Year.2030:Scenario.* = AssetPL::Account.GrossBlock:Year[PREV] + AssetPL::[Account.CapEx]

# Straight-line depreciation
rule AssetPL::Account.DepreciationExpense:AssetType.*:Year.*:Scenario.* = AssetPL::[Account.GrossBlock] / AssetDrivers::[Driver.UsefulLife]

# Accumulated depreciation
# Base year is explicit; later years are explicit recurrence rules to avoid overlap.
rule AssetPL::Account.AccumulatedDepreciation:AssetType.*:Year.2026:Scenario.* = AssetPL::[Account.DepreciationExpense]
rule AssetPL::Account.AccumulatedDepreciation:AssetType.*:Year.2027:Scenario.* = AssetPL::Account.AccumulatedDepreciation:Year[PREV] + AssetPL::[Account.DepreciationExpense]
rule AssetPL::Account.AccumulatedDepreciation:AssetType.*:Year.2028:Scenario.* = AssetPL::Account.AccumulatedDepreciation:Year[PREV] + AssetPL::[Account.DepreciationExpense]
rule AssetPL::Account.AccumulatedDepreciation:AssetType.*:Year.2029:Scenario.* = AssetPL::Account.AccumulatedDepreciation:Year[PREV] + AssetPL::[Account.DepreciationExpense]
rule AssetPL::Account.AccumulatedDepreciation:AssetType.*:Year.2030:Scenario.* = AssetPL::Account.AccumulatedDepreciation:Year[PREV] + AssetPL::[Account.DepreciationExpense]

# Net book value
rule AssetPL::Account.NetBookValue:AssetType.*:Year.*:Scenario.* = AssetPL::[Account.GrossBlock] - AssetPL::[Account.AccumulatedDepreciation]