import {z} from 'zod'

export type ConnectorInstanceId = string;

export type SchemaDriftPolicy = 'IGNORE' | 'WARN' | 'FAIL';

export type StringMap = {[key: string]: string};

export type DiscoverResourcesRequest = {includeFields?: boolean | undefined, includeOperations?: boolean | undefined, schemaDriftPolicy?: SchemaDriftPolicy | undefined, filters?: StringMap | undefined};

export type CreateApiConnectorsConnectorInstanceIdDiscoveryrunsArgs = {connectorInstanceId: ConnectorInstanceId, body: DiscoverResourcesRequest};

export type CreateApiConnectorsConnectorInstanceIdDiscoveryrunsOptions = {baseUrl?: string | undefined, bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const connectorInstanceId = z.string();

export const resourceKind = z.enum(["OBJECT", "TABULAR", "DOCUMENT", "CLAIM_SET", "GRAPH", "EVENT_STREAM", "FILE", "SECRET", "CONFIGURATION", "CREDENTIAL", "PRESENTATION", "CUSTOM"]);

export const representationKind = z.enum(["JSON", "JSON_LD", "XML", "CSV", "PARQUET", "AVRO", "RDF", "JWT", "SD_JWT", "CBOR", "BINARY", "TEXT", "CUSTOM"]);

export const shapeKind = z.enum(["SCHEMA", "OPENAPI_SCHEMA", "JSON_SCHEMA", "RDF_SHAPE", "SQL_TABLE", "CSV_HEADER", "CLAIMS_SCHEMA", "FREEFORM"]);

export const contractKind = z.enum(["OPENAPI", "JSON_SCHEMA", "SQL_SCHEMA", "RDF_SCHEMA", "CSV_PROFILE", "OIDC_DISCOVERY", "VAULT_POLICY", "CUSTOM"]);

export const stringMap = z.record(z.string(), z.string());

export const contractRef = z.object({contractKind: contractKind, uri: z.string().optional(), version: z.string().optional(), contentHash: z.string().optional(), metadata: stringMap.optional()});

export const retentionDeleteAction = z.enum(["DELETE", "ANONYMIZE", "PSEUDONYMIZE", "TOMBSTONE", "REVIEW"]);

export const retentionSpec = z.object({purpose: z.string().optional(), legalBasis: z.string().optional(), retentionPeriod: z.string().optional(), deleteAction: retentionDeleteAction.optional(), metadata: stringMap.optional()});

export const fieldDescriptorId = z.string();

export const resourceDescriptorId = z.string();

export const resourceDescriptor = z.object({displayName: z.string(), description: z.string().optional(), resourceKind: resourceKind, representationKind: representationKind, shapeKind: shapeKind.optional(), contract: contractRef.optional(), fields: z.array(z.object({fieldPath: z.string(), displayName: z.string().optional(), valueType: z.string(), required: z.boolean().optional(), multiValued: z.boolean().optional(), semanticAttributeId: z.string().optional(), sensitivity: z.string().optional(), retention: retentionSpec.optional(), metadata: stringMap.optional(), fieldDescriptorId: fieldDescriptorId})).optional(), metadata: stringMap.optional(), resourceDescriptorId: resourceDescriptorId, createdAt: z.string(), updatedAt: z.string()});

export const operationKind = z.enum(["READ", "WRITE", "UPDATE", "DELETE", "UPSERT", "QUERY", "SEARCH", "IMPORT", "EXPORT", "INVOKE", "DISCOVER", "VALIDATE"]);

export const schemaDriftPolicy = z.enum(["IGNORE", "WARN", "FAIL"]);

export const schemaDriftFinding = z.object({resourceDescriptorId: resourceDescriptorId, externalResourceName: z.string().optional(), expectedContentHash: z.string(), discoveredContentHash: z.string(), expectedContractVersion: z.string().optional(), discoveredContractVersion: z.string().optional(), policy: schemaDriftPolicy.optional(), detectedAt: z.string().optional(), message: z.string().optional(), metadata: stringMap.optional()});

export const discoveredResource = z.object({externalResourceName: z.string().optional(), resourceKind: resourceKind.optional(), representationKind: representationKind.optional(), suggestedDescriptor: resourceDescriptor.optional(), supportedOperations: z.array(operationKind).optional(), schemaDrift: schemaDriftFinding.optional(), metadata: stringMap.optional()});

export const discoveryResult = z.object({connectorInstanceId: connectorInstanceId, resources: z.array(discoveredResource), schemaDrift: z.array(schemaDriftFinding).optional(), metadata: stringMap.optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Discover connector resources
 * 
 * POST /connectors/{connectorInstanceId}/discoveryruns
 */
export const createApiConnectorsConnectorInstanceIdDiscoveryruns = async (args: CreateApiConnectorsConnectorInstanceIdDiscoveryrunsArgs, options?: CreateApiConnectorsConnectorInstanceIdDiscoveryrunsOptions) => {
const {baseUrl = "https://api.example.com/api/connector/v1", fetch: fetchFn = fetch, bearer} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

if (bearer !== undefined) headers.set('authorization', `Bearer ${bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/connectors/${encodeURIComponent(String(args.connectorInstanceId))}/discoveryruns${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(discoveryResult, await res.json())
};