export type ProposalStatus = 'Draft' | 'InReview' | 'Approved' | 'Sent' | 'Revised';
export type ServiceCategory = 'HVAC' | 'Plumbing' | 'Electrical' | 'General' | 'Renovation';
export type Priority = 'Standard' | 'Urgent' | 'Emergency';
export type LineItemSource = 'AI' | 'Vendor' | 'Manual' | 'Historical';
export type PricingMode = 'UnitPrice' | 'TotalPrice' | 'Both';
export type UserRole = 'Dispatcher' | 'Admin' | 'SysAdmin';

export interface Proposal {
  id: string;
  proposalNumber: string;
  workOrderNumber: string;
  customerName: string;
  customerAddress: string;
  scopeOfWork: string;
  refinedScope: string | null;
  serviceCategory: ServiceCategory;
  priority: Priority;
  status: ProposalStatus;
  totalBidAmount: number;
  vendorTotalCost: number | null;
  notes: string;
  submittedById: string;
  submittedAt: string;
  assignedAdminId: string | null;
  approvedById: string | null;
  approvedAt: string | null;
  sentAt: string | null;
  currentRevision: number;
  parentProposalId: string | null;
  createdAt: string;
  updatedAt: string;
}

export interface LineItem {
  id: string;
  proposalId: string;
  description: string;
  quantity: number;
  unit: string;
  unitPrice: number | null;
  totalPrice: number;
  pricingMode: PricingMode;
  sortOrder: number;
  source: LineItemSource;
  createdAt: string;
  updatedAt: string;
}

export interface CreateProposalRequest {
  workOrderNumber: string;
  customerName: string;
  customerAddress: string;
  scopeOfWork: string;
  serviceCategory: ServiceCategory;
  priority: Priority;
  notes?: string;
}

export interface UpdateLineItemsRequest {
  lineItems: Omit<LineItem, 'id' | 'proposalId' | 'createdAt' | 'updatedAt'>[];
}