export interface Supplier {
  id: string;
  suppliername: string;
  email: string;
  suppliernumber: string;
  supplieraddress: string;
  supply_tags: string;
  coordinates: string; // Raw coordinates text (e.g. "-33.9249, 18.4241")
  closingtime: string;
}

export interface Order {
  id: string;
  order_number: string;
  status: string;
  notes: string;
}

export interface PurchaseOrder {
  id: string;
  po_number: string;
  status: string;
}

export interface OrderItem {
  id: string;
  order: string;
  // Customer-facing line. Use this for label / list / customer view.
  description: string;
  // Supplier-facing line. Use this on the PO pickup screen — supplier
  // paperwork references this exact wording. Falls back to description.
  po_description?: string;
  // Customer-side quantity. Nullable on legacy rows.
  quantity: number;
  // Supplier-side quantity. Per the brief, falls back to quantity when
  // blank (zero is treated as blank in getItemDisplayQty).
  order_qty?: number;
  // Pricing — operator-side (cost), customer-side (selling), and audit
  // source ('quote' | 'catalogue' | 'manual').
  cost_price?: number;
  selling_price?: number | null;
  pricing_source?: 'quote' | 'catalogue' | 'manual' | string;
  matched_quote_item?: string;
  // Supplier part number. Use this on PO paperwork over description.
  sku?: string;
  // Workflow states. item_status is the operator-side state, drv_status
  // is the driver-side state. They're independent enums — an item can
  // be item_status='collected' (operator marked it received) while
  // drv_status is still 'en_route' (driver hasn't checked in), etc.
  item_status:
    | 'pending'
    | 'processed'
    | 'po_generated'
    | 'collection_pool'
    | 'assigned'
    | 'collected'
    | 'stock_verified'
    | 'picking'
    | 'ready_delivery'
    | 'delivered'
    | 'cancelled';
  drv_status?: 'unassigned' | 'assigned' | 'en_route' | 'collected' | 'failed' | string;
  driver_status?: string;
  delivery_status?: 'pending' | 'ready' | 'in_transit' | 'delivered' | 'failed';
  invoice_status?: 'pending' | 'invoiced' | 'paid' | 'cancelled';
  // Driver assignment. The canonical driver field per the brief is
  // `drv_id` (relation -> users); the older `driver` field is a legacy
  // shadow that only a handful of rows set. Use drv_id in every filter.
  drv_id?: string;
  driver?: string;
  // Server-side ISO timestamp of when drv_id was set. Surface in detail.
  assigned_at?: string;
  // Audit trail of failed-collection attempts. The driver writes here.
  // Distinct from notes (operator-side).
  notes?: string;
  problem_notes?: string;
  problem_flag?: boolean;
  problem_type?: 'stock' | 'supplier' | 'driver' | 'delivery' | 'pricing' | 'other' | string;
  // Per-row quantities used for proving/dashboard math.
  qty_processed?: number;
  qty_assigned?: number;
  qty_collected?: number;
  qty_delivered?: number;
  drv_assigned_at?: string;
  drv_collected_at?: string;
  delivered_at?: string;
  markup?: number;
  markup_percent?: number;
  legacy_order_item_id?: string;
  // Backwards-compat shim the app uses in some spots
  is_stock_item?: boolean;
  collected_date?: string;
  collection_date?: string;
  // Expanded fields
  expand?: {
    supplier?: Supplier;  // PB expand key matches relation field name
    order?: Order;
    purchase_order?: PurchaseOrder;
  };
}

export interface DriverLocation {
  id: string;
  driver: string;
  latitude: number;
  longitude: number;
  accuracy?: number;
  altitude?: number;
  speed?: number;
  heading?: number;
  timestamp: string;
}

export interface AppSettings {
  locationInterval: number;
  minimumAccuracy: number;
  enableHighAccuracy: boolean;
  darkMode: boolean;
  fontSize: 'small' | 'normal' | 'large';
  offlineMode: boolean;
}

export const DEFAULT_SETTINGS: AppSettings = {
  locationInterval: 60,
  minimumAccuracy: 50,
  enableHighAccuracy: true,
  darkMode: false,
  fontSize: 'normal',
  offlineMode: false,
};

export const PROBLEM_TYPES = [
  { value: 'out_of_stock', label: 'Out of Stock' },
  { value: 'partial_stock', label: 'Partial Stock' },
  { value: 'quality_issue', label: 'Quality Issue' },
  { value: 'wrong_item', label: 'Wrong Item' },
  { value: 'other', label: 'Other' },
] as const;