-- Migration 101: Add fixed_price_agreement_id to time tracking tables
-- Links time entries to fixed-price agreements for billing and reporting

-- Add to ticket worklog
ALTER TABLE tticket_worklog 
ADD COLUMN IF NOT EXISTS fixed_price_agreement_id INTEGER 
REFERENCES customer_fixed_price_agreements(id) ON DELETE SET NULL;

CREATE INDEX IF NOT EXISTS idx_worklog_fpa ON tticket_worklog(fixed_price_agreement_id);

-- Add to sag/solutions time tracking
ALTER TABLE tmodule_times 
ADD COLUMN IF NOT EXISTS fixed_price_agreement_id INTEGER 
REFERENCES customer_fixed_price_agreements(id) ON DELETE SET NULL;

CREATE INDEX IF NOT EXISTS idx_times_fpa ON tmodule_times(fixed_price_agreement_id);

COMMENT ON COLUMN tticket_worklog.fixed_price_agreement_id IS 
    'Links worklog entry to fixed-price agreement for billing tracking';

COMMENT ON COLUMN tmodule_times.fixed_price_agreement_id IS 
    'Links time entry to fixed-price agreement for billing tracking';