feat(fusion_accounting_ai): add ReportsAdapter with trial_balance

Made-with: Cursor

fusion_accounting_ai/services/data_adapters/__init__.py

@@ -1,7 +1,7 @@
 from .base import DataAdapter, AdapterMode
 from ._registry import get_adapter, register_adapter
 
-# Side-effect imports: each adapter module calls register_adapter at module load.
-from . import bank_rec  # noqa: F401
+from . import bank_rec    # noqa: F401
+from . import reports     # noqa: F401
 
 __all__ = ['DataAdapter', 'AdapterMode', 'get_adapter', 'register_adapter']

fusion_accounting_ai/services/data_adapters/reports.py

@@ -0,0 +1,56 @@
+"""Reports data adapter.
+
+Routes report-data lookups across:
+- FUSION:     fusion.account.report (added by fusion_accounting_reports, Phase 2)
+- ENTERPRISE: account.report from account_reports
+- COMMUNITY:  raw aggregations on account.move.line
+"""
+
+from .base import DataAdapter
+from ._registry import register_adapter
+
+
+class ReportsAdapter(DataAdapter):
+    FUSION_MODEL = 'fusion.account.report'
+    ENTERPRISE_MODULE = 'account_reports'
+
+    def trial_balance(self, date_to=None, company_ids=None):
+        return self._dispatch('trial_balance', date_to=date_to, company_ids=company_ids)
+
+    def trial_balance_via_fusion(self, date_to=None, company_ids=None):
+        # Phase 2 will implement; for now defer to community.
+        return self.trial_balance_via_community(date_to=date_to, company_ids=company_ids)
+
+    def trial_balance_via_enterprise(self, date_to=None, company_ids=None):
+        # Enterprise account_reports has rich filters; for AI-tool consumption,
+        # the community shape suffices and avoids brittle coupling to Odoo's
+        # report-line internals.
+        return self.trial_balance_via_community(date_to=date_to, company_ids=company_ids)
+
+    def trial_balance_via_community(self, date_to=None, company_ids=None):
+        domain = [('parent_state', '=', 'posted')]
+        if date_to:
+            domain.append(('date', '<=', date_to))
+        if company_ids:
+            domain.append(('company_id', 'in', list(company_ids)))
+
+        Line = self.env['account.move.line'].sudo()
+        groups = Line._read_group(
+            domain=domain,
+            groupby=['account_id'],
+            aggregates=['debit:sum', 'credit:sum'],
+        )
+        return [
+            {
+                'account_id': account.id,
+                'account_code': account.code,
+                'account_name': account.name,
+                'debit': debit_sum,
+                'credit': credit_sum,
+                'balance': debit_sum - credit_sum,
+            }
+            for account, debit_sum, credit_sum in groups
+        ]
+
+
+register_adapter('reports', ReportsAdapter)