import { readFileSync } from 'node:fs';
import { describe, expect, it } from 'vitest';

describe('tenant isolation migration', () => {
  const sql = readFileSync('migrations/0001_infrastructure.up.sql', 'utf8');
  const tables = ['staff_outbox', 'staff_inbox', 'staff_idempotency_keys', 'staff_audit_log'];
  it.each(tables)('%s is tenant scoped and protected by RLS', (table) => {
    const create = sql.slice(
      sql.indexOf(`CREATE TABLE IF NOT EXISTS ${table}`),
      sql.indexOf(';', sql.indexOf(`CREATE TABLE IF NOT EXISTS ${table}`)),
    );
    expect(create).toContain('tenant_id VARCHAR(26) NOT NULL');
    expect(sql).toContain(`ALTER TABLE ${table} ENABLE ROW LEVEL SECURITY`);
    expect(sql).toContain(`ALTER TABLE ${table} FORCE ROW LEVEL SECURITY`);
    expect(sql).toMatch(new RegExp(`CREATE POLICY [a-z_]+ ON ${table} `));
  });
  it('sets tenant and actor locally inside each transaction', () => {
    const source = readFileSync('src/infrastructure/database.ts', 'utf8');
    expect(source).toContain("set_config('app.tenant_id', $1, true)");
    expect(source).toContain("set_config('app.user_id', $2, true)");
  });
});

describe('attendance portal migrations', () => {
  const sql = readFileSync('migrations/0005_attendance_portal.up.sql', 'utf8');
  const tables = ['staff_employees', 'staff_attendance_events', 'staff_timesheet_entries'];

  it.each(tables)('%s is tenant scoped and forces RLS', (table) => {
    expect(sql).toContain(`ALTER TABLE ${table} ENABLE ROW LEVEL SECURITY`);
    expect(sql).toContain(`ALTER TABLE ${table} FORCE ROW LEVEL SECURITY`);
    expect(sql).toMatch(new RegExp(`CREATE POLICY ${table}_[a-z_]+ ON ${table}`));
  });

  it('keeps raw attendance immutable for the runtime role', () => {
    expect(sql).toContain('GRANT SELECT, INSERT ON staff_attendance_events TO krona_staff_app');
    expect(sql).toContain(
      'REVOKE UPDATE, DELETE, TRUNCATE ON staff_attendance_events FROM krona_staff_app',
    );
  });
});

describe('payroll foundation migration', () => {
  const sql = readFileSync('migrations/0006_payroll_foundation.up.sql', 'utf8');
  const tables = [
    'staff_org_units',
    'staff_org_unit_terms',
    'staff_metric_definitions',
    'staff_daily_metrics',
    'staff_work_items',
    'staff_pay_rules',
    'staff_pay_assignments',
    'staff_work_sessions',
    'staff_payroll_runs',
    'staff_payroll_lines',
    'staff_payouts',
  ];

  it.each(tables)('%s is tenant scoped and included in the RLS setup', (table) => {
    expect(sql).toContain(`CREATE TABLE ${table}`);
    expect(sql).toContain(`'${table}'`);
  });

  it('enables and forces RLS with a tenant policy for every listed payroll table', () => {
    expect(sql).toContain("EXECUTE format('ALTER TABLE %I ENABLE ROW LEVEL SECURITY', target_table)");
    expect(sql).toContain("EXECUTE format('ALTER TABLE %I FORCE ROW LEVEL SECURITY', target_table)");
    expect(sql).toContain("target_table || '_tenant_isolation', target_table");
  });

  it('uses tenant-scoped foreign keys for payroll ownership', () => {
    expect(sql).toContain(
      'FOREIGN KEY (tenant_id, employee_id) REFERENCES staff_employees (tenant_id, id)',
    );
    expect(sql).toContain(
      'FOREIGN KEY (tenant_id, org_unit_id) REFERENCES staff_org_units (tenant_id, id)',
    );
    expect(sql).toContain(
      'FOREIGN KEY (tenant_id, pay_rule_id) REFERENCES staff_pay_rules (tenant_id, id)',
    );
  });

  it('keeps the money ledger append-only for the runtime role', () => {
    expect(sql).toContain('CREATE TABLE staff_payroll_ledger');
    expect(sql).toContain('ALTER TABLE staff_payroll_ledger ENABLE ROW LEVEL SECURITY');
    expect(sql).toContain('ALTER TABLE staff_payroll_ledger FORCE ROW LEVEL SECURITY');
    expect(sql).toContain('GRANT SELECT, INSERT ON staff_payroll_ledger TO krona_staff_app');
    expect(sql).toContain(
      'REVOKE UPDATE, DELETE, TRUNCATE ON staff_payroll_ledger FROM krona_staff_app',
    );
  });
});