/**
 * Mirrors the backend contract: the `dto.py` and `schemas.py` of each module
 * under `cbh/api`.
 *
 * Every enum there is an `IntEnum`, so pydantic serialises it as a number and
 * these numeric enums are the same values, not a parallel vocabulary.
 */

export enum TradeDirection {
  IMPORT = 1,
  EXPORT = 2,
  BOTH = 3,
  WAREHOUSE = 4,
}

/** The customs procedure the declaration is filed under. */
export enum CustomsProcedure {
  RELEASE_FOR_FREE_CIRCULATION = 1,
  EXTERNAL_TRANSIT_T1 = 2,
  INTERNAL_TRANSIT_T2 = 3,
  CUSTOMS_WAREHOUSE = 4,
}

export enum LineStatus {
  OK = 1,
  AMBIGUOUS = 2,
  INVALID = 3,
  EXPIRING = 4,
}

export enum ResolutionMethod {
  EXACT_10 = 1,
  /** The single declarable code is a real subdivision the tool picked. */
  EXPANDED_FROM_PREFIX = 2,
  NOT_RESOLVED = 3,
  /** Only zeros were added: `6203 42 31` → `6203 42 31 00`. Normalisation. */
  PADDED = 4,
}

/** How the code going out relates to the code that came in. */
export enum CodeChange {
  UNCHANGED = 1,
  /** Only zeros added to reach ten digits — shown plainly, never struck through. */
  PADDED = 2,
  /** Different digits: a subdivision, a replacement, a pin or a correction. */
  CHANGED = 3,
}

export enum WarningSeverity {
  INFO = 1,
  WARNING = 2,
  BLOCKING = 3,
}

export enum WarningType {
  ANTIDUMPING = 1,
  COUNTERVAILING = 2,
  SAFEGUARD = 3,
  PHYTOSANITARY = 4,
  VETERINARY_CHED = 5,
  CITES = 6,
  DUAL_USE_OUT_OF_SCOPE = 7,
  CODE_EXPIRING_SOON = 8,
  CODE_NOT_VALID_AT_DATE = 9,
  CODE_REPLACED = 10,
  CODE_AMBIGUOUS = 11,
  CODE_UNKNOWN = 12,
  CODE_NOT_DECLARABLE = 13,
  PROHIBITION = 14,
  RESTRICTION = 15,
  QUOTA = 16,
  SURVEILLANCE = 17,
  EXCISE = 18,
  NO_MEASURES_FOUND = 19,
  REFERENCE_DATA_MISSING = 20,
  COUNTRY_UNKNOWN = 21,
  CHAPTER_OUT_OF_SCOPE = 22,
  ADDITIONAL_CODE_REQUIRED = 23,
  NVWA_CHAPTER_EXCLUDED = 24,
  DESTINATION_UNKNOWN = 25,
  RULE_APPLIED = 26,
  TRANSIT_DUTY_SUSPENDED = 27,
  NATIONAL_MEASURE = 28,
  CBAM = 29,
  /** On an ambiguous line: a measure that binds only some of the candidates. */
  CANDIDATE_MEASURE = 30,
}

export enum DocumentRequirementType {
  REQUIRED = 1,
  ALTERNATIVE = 2,
  EXEMPTION = 3,
  SUSPENDED = 4,
  /** Only claims a benefit — a preference, a suspension. Never needed to pass. */
  OPTIONAL = 5,
  /** Owed only for some consignments of the code, e.g. low-value parcels. */
  CONDITIONAL = 6,
}

/** What one condition group of a measure asks of the declaration. */
export enum ObligationKind {
  /** Without one of the documents the goods are stopped. */
  MANDATORY = 1,
  /** Without them the goods still pass; they only claim a benefit. */
  BENEFIT = 2,
  /** Depends on the consignment, not on the code. */
  CONDITIONAL = 3,
}

export enum DocumentCodeType {
  CERTIFICATE = 1,
  NATIONAL = 2,
  EXEMPTION = 3,
  SPECIAL = 4,
  UNKNOWN = 99,
}

export enum ConfidenceLevel {
  RED = 1,
  AMBER = 2,
  GREEN = 3,
}

export enum ReferenceSource {
  TARIC = 1,
  CODEBOEK = 2,
  MANUAL = 3,
  NONE = 99,
}

export enum MeasureCategory {
  TARIFF_DUTY = 1,
  ANTIDUMPING = 2,
  COUNTERVAILING = 3,
  SAFEGUARD = 4,
  PROHIBITION = 5,
  RESTRICTION = 6,
  VETERINARY_CONTROL = 7,
  PHYTOSANITARY_CONTROL = 8,
  CITES = 9,
  DUAL_USE = 10,
  QUOTA = 11,
  SURVEILLANCE = 12,
  EXCISE = 13,
  VAT = 14,
  CBAM = 15,
  OTHER = 99,
}

export enum RuleAction {
  PIN_CODE = 1,
  ADD_DOCUMENTS = 2,
  REMOVE_DOCUMENTS = 3,
  NOTE = 4,
}

export interface LineCheckRequest {
  code: string;
  originCountry?: string | null;
  destinationCountry?: string | null;
  direction: TradeDirection;
  date?: string | null;
  additionalCodes?: string[];
  description?: string | null;
  clientProfileId?: string | null;
}

export interface CodeCandidate {
  code: string;
  formattedCode: string;
  description?: string | null;
  descriptionEn?: string | null;
  /** Descriptions from just under the typed prefix down to this code. */
  path?: string[];
  pathNl?: string[];
  /** `path` joined, ready for an option label. */
  label?: string | null;
  validFrom?: string | null;
  validTo?: string | null;
}

export interface DocumentRequirement {
  code: string;
  documentType: DocumentCodeType;
  requirementType: DocumentRequirementType;
  description?: string | null;
  source: ReferenceSource;
  validFrom?: string | null;
  validTo?: string | null;
  measureSid?: string | null;
  measureTypeId?: string | null;
  measureTypeDescription?: string | null;
  conditionCode?: string | null;
  alternativeGroup?: string | null;
  /** Where the obligation comes from: the legal act and the publication. */
  regulationId?: string | null;
  sourceFile?: string | null;
  sourcePublishedAt?: string | null;
}

export interface DocumentObligation {
  measureSid: string;
  measureTypeId: string;
  measureTypeDescription?: string | null;
  conditionCode: string;
  kind: ObligationKind;
  /** Documents that meet the obligation: a certificate, a licence. */
  satisfiedBy: string[];
  /** Codes stating the goods are not concerned. */
  exemptedBy: string[];
  note?: string | null;
  suspended: boolean;
  regulationId?: string | null;
}

export interface LineWarning {
  type: WarningType;
  severity: WarningSeverity;
  message: string;
  measureSid?: string | null;
  measureTypeId?: string | null;
  documentCode?: string | null;
  relatedCodes: string[];
}

export interface AppliedRule {
  ruleId: string;
  name: string;
  action: RuleAction;
  conditions: Record<string, string>;
  note?: string | null;
}

export interface AppliedMeasure {
  measureSid: string;
  goodsCode: string;
  measureTypeId: string;
  measureTypeDescription?: string | null;
  category: MeasureCategory;
  geoAreaCode: string;
  validFrom?: string | null;
  validTo?: string | null;
  national?: boolean;
  suspended?: boolean;
  dutyExpression?: string | null;
  quotaOrderNumber?: string | null;
  regulationId?: string | null;
  sourceFile?: string | null;
  sourcePublishedAt?: string | null;
}

/**
 * The tariff preference an import line can declare (D/E 4/17): 100 the
 * third-country duty, 300 a preference, 320 a preference within a quota.
 * The claim the measures allow — the proof of origin is what backs it.
 */
export interface LinePreference {
  preferenceCode: string;
  preferentialRate?: string | null;
  thirdCountryRate?: string | null;
  /** Only when the code draws on a quota. */
  quotaOrderNumber?: string | null;
  agreementArea?: string | null;
  agreementDescription?: string | null;
  measureSid?: string | null;
  regulationId?: string | null;
  /** One of these is declared to claim the preference. */
  originProofs: DocumentRequirement[];
  /** TARIC when read from the measure, MANUAL when from the agreement. */
  originProofSource: ReferenceSource;
  /** A quota open for the code that the proposed code does not draw on. */
  availableQuotaOrderNumber?: string | null;
  availableQuotaRate?: string | null;
  note?: string | null;
}

export interface LineCheckResponse {
  inputCode: string;
  originCountry?: string | null;
  destinationCountry?: string | null;
  measureCountry?: string | null;
  direction: TradeDirection;
  checkedOn: string;

  resolvedCode?: string | null;
  formattedCode?: string | null;
  codeDescription?: string | null;
  resolutionMethod: ResolutionMethod;
  candidates: CodeCandidate[];
  replacementCodes: string[];
  codeChange?: CodeChange;

  documentsRequired: DocumentRequirement[];
  documentsAlternatives: DocumentRequirement[][];
  documentsExemption: DocumentRequirement[];
  /** Owed, but deferred by the procedure to the office of destination. */
  documentsSuspended: DocumentRequirement[];
  documentsOptional: DocumentRequirement[];
  documentsConditional: DocumentRequirement[];
  obligations: DocumentObligation[];
  noneRequired: boolean;

  warnings: LineWarning[];
  status: LineStatus;
  expiringOn?: string | null;

  codeConfidence: ConfidenceLevel;
  codeConfidenceReason: string;
  documentConfidence: ConfidenceLevel;
  documentConfidenceReason: string;
  source: ReferenceSource;

  appliedMeasures: AppliedMeasure[];
  appliedRules: AppliedRule[];
  preference?: LinePreference | null;
  referenceAsOf?: string | null;
}

export interface ReferenceDataStatus {
  counts: Record<string, number>;
  referenceAsOf?: string | null;
}

export interface GeoArea {
  code: string;
  name?: string | null;
  memberCodes: string[];
}

export interface Paging {
  pageSize: number;
  pageIndex: number;
  totalCount: number;
}

export interface AllObjectsResponse<T> {
  paging: Paging;
  data: T[];
}

export interface ClientProfile {
  id: string;
  name: string;
  description?: string | null;
  /** Canonical field → the client's own column header. */
  columnMapping: Record<string, string>;
  /** Which sheet row holds the headers. A Softpak pack has metadata above it. */
  headerRow: number;
  sheetName?: string | null;
  missingRequiredFields: string[];
}

// ---------------------------------------------------------------------------
// Shipments: upload, the review table, the export.
// ---------------------------------------------------------------------------

export enum BatchStatus {
  UPLOADED = 1,
  MAPPING_REQUIRED = 2,
  PROCESSING = 3,
  COMPLETED = 4,
  FAILED = 5,
}

export enum ReviewStage {
  NOT_STARTED = 1,
  IN_REVIEW = 2,
  REVIEWED = 3,
}

export enum BatchSource {
  UPLOAD = 1,
  MANUAL = 2,
}

export enum ExportFormat {
  REVIEW = 1,
  SOURCE = 2,
  SOFTPAK = 3,
  SCOPE = 4,
  FITON = 5,
}

export enum RowDecision {
  PENDING = 1,
  ACCEPTED = 2,
  CORRECTED = 3,
}

export enum RuleScope {
  CLIENT = 1,
  TENANT = 2,
}

export interface ClientProfileRef {
  id: string;
  name: string;
}

export interface BatchMetrics {
  totalLines: number;
  uniqueLookups: number;
  machineSeconds: number;
  reviewSeconds?: number | null;
  statusCounts: Record<string, number>;
  extractionScore: number;
  documentScore: number;
  codeConfidenceCounts: Record<string, number>;
  documentConfidenceCounts: Record<string, number>;
  /** Null when the pack does not state the figure — not the same as zero. */
  totalPackages: number | null;
  totalGrossWeight: number | null;
  totalNetWeight: number | null;
  totalValue: number | null;
}

export interface BatchResponse {
  id: string;
  name: string;
  clientProfile: ClientProfileRef;
  status: BatchStatus;
  source: BatchSource;
  sourceFileName?: string | null;
  resultFileName?: string | null;
  checkDate?: string | null;
  defaultDirection: TradeDirection;
  destinationCountry?: string | null;
  shipmentReference?: string | null;
  currency: string;
  metrics: BatchMetrics;
  errors: string[];
  reviewStage: ReviewStage;
  reviewStartedAt?: string | null;
  reviewFinishedAt?: string | null;
  referenceAsOf?: string | null;
  datetimeInserted: string;
}

export interface ReviewDocuments {
  required: DocumentRequirement[];
  alternatives: DocumentRequirement[][];
  exemption: DocumentRequirement[];
  suspended: DocumentRequirement[];
  /** Owed only for some consignments of the code. */
  conditional?: DocumentRequirement[];
  /** Only claim a benefit; not needed for the goods to pass. */
  optional?: DocumentRequirement[];
  noneRequired: boolean;
  label: string;
}

export interface ReviewRow {
  rowIndex: number;
  description?: string | null;

  inputCode?: string | null;
  proposedCode?: string | null;
  formattedCode?: string | null;
  codeDescription?: string | null;
  candidates: string[];
  /** The same candidates with their description path, for the picker. */
  candidateOptions?: CodeCandidate[];
  replacementCodes: string[];
  /** Strike the input through only on CHANGED. */
  codeChange?: CodeChange;

  originCountry?: string | null;
  destinationCountry?: string | null;
  measureCountry?: string | null;
  direction?: TradeDirection | null;
  procedure?: CustomsProcedure | null;

  codeConfidence: ConfidenceLevel;
  codeConfidenceReason: string;
  documentConfidence: ConfidenceLevel;
  documentConfidenceReason: string;
  source: ReferenceSource;

  documents: ReviewDocuments;
  /** Null on export lines and on rows checked before preferences were read. */
  preference?: LinePreference | null;
  warnings: LineWarning[];
  appliedRules: AppliedRule[];

  packages?: number | null;
  grossWeight?: number | null;
  netWeight?: number | null;
  value?: number | null;

  decision: RowDecision;
  correctedCode?: string | null;
  cbamPermitNumber?: string | null;
  eudrReference?: string | null;
  licenceNumbers: string[];
  reviewNote?: string | null;

  status: string;
  needsReview: boolean;
}

export interface ShipmentTotals {
  /** Null when the pack does not state the figure — not the same as zero. */
  packages: number | null;
  grossWeight: number | null;
  netWeight: number | null;
  value: number | null;
  currency: string;
}

export interface ReviewHeader {
  batchId: string;
  shipmentReference?: string | null;
  name: string;
  clientProfile: ClientProfileRef;
  status: BatchStatus;
  source: BatchSource;
  direction: TradeDirection;
  procedure: CustomsProcedure;
  originCountries: string[];
  destinationCountry?: string | null;
  checkDate?: string | null;
  referenceAsOf?: string | null;

  totals: ShipmentTotals;
  totalLines: number;
  extractionScore: number;
  documentScore: number;
  codeConfidenceCounts: Record<string, number>;
  documentConfidenceCounts: Record<string, number>;
  linesNeedingReview: number;
}

export interface ReviewTableResponse {
  header: ReviewHeader;
  paging: Paging;
  rows: ReviewRow[];
}

export interface RowReviewRequest {
  correctedCode?: string | null;
  decision?: RowDecision | null;
  cbamPermitNumber?: string | null;
  eudrReference?: string | null;
  licenceNumbers?: string[] | null;
  reviewNote?: string | null;
}

export interface MakeRuleRequest {
  name: string;
  description?: string | null;
  scope: RuleScope;
  action: RuleAction;
  pinnedCode?: string | null;
  documentCodes: string[];
  note?: string | null;
  useCodePrefix: boolean;
  codePrefixLength: number;
  useOriginCountry: boolean;
  useDestinationCountry: boolean;
  useDirection: boolean;
  descriptionContains?: string | null;
  createdBy?: string | null;
}

export interface RuleResponse {
  id: string;
  name: string;
  description?: string | null;
  action: RuleAction;
  conditions: Record<string, string>;
  active: boolean;
  hitCount: number;
}

export interface ExportFormatResponse {
  format: ExportFormat;
  name: string;
  description: string;
  available: boolean;
  unavailableReason?: string | null;
  isProfileDefault: boolean;
}

export interface ColumnMappingSuggestion {
  headers: string[];
  suggestedMapping: Record<string, string>;
  unmappedHeaders: string[];
  missingRequiredFields: string[];
}

export interface UploadOptions {
  clientProfileId: string;
  file: File;
  name?: string;
  checkDate?: string;
  destinationCountry?: string;
  direction?: TradeDirection;
  shipmentReference?: string;
}

export interface ReviewQuery {
  needsReviewOnly?: boolean;
  confidence?: ConfidenceLevel;
  pageSize?: number;
  pageIndex?: number;
}