export const ACL_MODULES = [
  { key: 'users', label: 'Users' },
  { key: 'roles', label: 'Roles' },
  { key: 'patients', label: 'Master Patients' },
  { key: 'sessions', label: 'Sessions' },
  { key: 'onboarding', label: 'Patients' },
  { key: 'cohorts', label: 'Cohorts' },
  { key: 'prt_cohorts', label: 'Add PRT cohorts' },
  { key: 'holidays', label: 'Holidays' },
  { key: 'leaves', label: 'Leave' },
  { key: 'matching', label: 'Matching' },
  { key: 'reports', label: 'Reports' },
  { key: 'program_sessions', label: 'Program Sessions' },
  { key: 'whatsapp', label: 'WhatsApp' },
];

export const ACL_ACTIONS = ['view', 'add', 'edit', 'delete', 'import'];

export const SYSTEM_ROLE_KEYS = ['super_admin', 'admin', 'educator', 'physical_prt'];

function perm(module, actions, scope = 'all') {
  return { module, actions: [...actions], scope };
}

export const SYSTEM_ROLE_PERMISSIONS = {
  super_admin: [
    perm('users', ['view', 'add', 'edit', 'delete']),
    perm('roles', ['view', 'add', 'edit', 'delete']),
    perm('patients', ['view', 'add', 'edit', 'delete', 'import']),
    perm('sessions', ['view', 'add', 'edit', 'delete']),
    perm('onboarding', ['view', 'add', 'edit', 'delete']),
    perm('cohorts', ['view', 'add', 'edit', 'delete']),
    perm('prt_cohorts', ['view', 'add', 'edit', 'delete']),
    perm('holidays', ['view', 'add', 'edit', 'delete']),
    perm('leaves', ['view', 'add', 'edit', 'delete']),
    perm('matching', ['view', 'add', 'edit', 'delete']),
    perm('reports', ['view']),
    perm('program_sessions', ['view', 'add', 'edit']),
    perm('whatsapp', ['view', 'edit']),
  ],
  admin: [
    perm('users', ['view', 'add', 'edit', 'delete']),
    perm('roles', ['view']),
    perm('patients', ['view', 'add', 'edit', 'delete', 'import']),
    perm('sessions', ['view', 'add', 'edit', 'delete']),
    perm('onboarding', ['view', 'add', 'edit', 'delete']),
    perm('cohorts', ['view', 'add', 'edit', 'delete']),
    perm('prt_cohorts', ['view', 'add', 'edit', 'delete']),
    perm('holidays', ['view', 'add', 'edit', 'delete']),
    perm('leaves', ['view', 'add', 'edit', 'delete']),
    perm('matching', ['view', 'add', 'edit', 'delete']),
    perm('reports', ['view']),
    perm('program_sessions', ['view', 'edit']),
    perm('whatsapp', ['view', 'edit']),
  ],
  educator: [
    perm('onboarding', ['view', 'add', 'edit', 'delete'], 'assigned'),
    perm('cohorts', ['view'], 'assigned'),
    perm('prt_cohorts', ['view', 'add', 'edit', 'delete'], 'assigned'),
    perm('holidays', ['view']),
    perm('leaves', ['view', 'add', 'edit'], 'assigned'),
    perm('program_sessions', ['view', 'edit'], 'assigned'),
    perm('reports', ['view'], 'assigned'),
  ],
  physical_prt: [
    perm('onboarding', ['view', 'add', 'edit', 'delete'], 'assigned'),
    perm('holidays', ['view']),
    perm('leaves', ['view', 'add', 'edit'], 'assigned'),
  ],
};

export const SYSTEM_ROLE_META = {
  super_admin: {
    name: 'Super Admin',
    description: 'Full access to all modules, including role permissions.',
  },
  admin: {
    name: 'Admin',
    description: 'Manage users, patients, master patients, and sessions. Cannot change ACL or Super Admin accounts.',
  },
  educator: {
    name: 'PRT',
    description: 'Pulmonary Rehab Therapist. Manage assigned patients and cohorts, and view holidays and leave.',
  },
  physical_prt: {
    name: 'Physical PRT',
    description: 'Physical Pulmonary Rehab Therapist. Manage assigned patients, and view holidays and leave.',
  },
};

export function actionsInclude(entryActions, action) {
  if (!Array.isArray(entryActions)) return false;
  if (entryActions.includes(action)) return true;
  if (action === 'view' && (entryActions.includes('edit') || entryActions.includes('add') || entryActions.includes('delete'))) {
    return true;
  }
  return false;
}

export function normalizePermissions(permissions) {
  const byModule = new Map();
  for (const p of permissions || []) {
    if (!p?.module) continue;
    const existing = byModule.get(p.module) || { module: p.module, actions: [], scope: 'all' };
    existing.actions = [...new Set([...existing.actions, ...(p.actions || [])])];
    existing.scope = p.scope === 'assigned' ? 'assigned' : existing.scope === 'assigned' ? 'assigned' : 'all';
    byModule.set(p.module, existing);
  }
  return [...byModule.values()];
}

export function permissionsToMaps(permissions) {
  const modules = {};
  const scopes = {};
  for (const p of normalizePermissions(permissions)) {
    modules[p.module] = p.actions;
    scopes[p.module] = p.scope || 'all';
  }
  return { modules, scopes };
}