import {z} from 'zod'

export type AttributeFieldSpec = {name: string, kind: string, required?: boolean | undefined, description?: string | undefined, enum_values?: (Array<string> | null) | undefined, label?: (string | null) | undefined, instant?: boolean | undefined};

export type PatternCase = {pattern: string, value: string};

export type PatternMapRule = {kind?: 'pattern_map' | undefined, source_field?: string | undefined, cases: Array<PatternCase>, default?: (string | null) | undefined};

export type EdgeDegreeRule = {kind?: 'edge_degree' | undefined, relationship_type_id: string, node_role?: ('source' | 'target' | 'either') | undefined, minimum?: number | undefined};

export type DerivedPropertyDefInput = {id: string, description?: string | undefined, rule: PatternMapRule | EdgeDegreeRule, label?: (string | null) | undefined};

export type OntologyPackageEntityTypeInput = {type_id: string, display_name: string, description: string, tier: 'representation' | 'domain', attribute_fields?: Array<AttributeFieldSpec> | undefined, derived_properties?: Array<DerivedPropertyDefInput> | undefined};

export type OntologyPackageRelationshipType = {type_id: string, display_name: string, description: string, source_tier: 'representation' | 'domain', target_tier: 'representation' | 'domain', source_entity_type_ids?: Array<string> | undefined, target_entity_type_ids?: Array<string> | undefined, attribute_fields?: Array<AttributeFieldSpec> | undefined, symmetric?: boolean | undefined};

export type OntologyPackageInput = {slug: string, version: string, display_name?: string | undefined, entity_types?: Array<OntologyPackageEntityTypeInput> | undefined, relationship_types?: Array<OntologyPackageRelationshipType> | undefined};

export type SourceBindingSpec = {source_kind: string, role: string, field_map?: {[key: string]: string} | undefined};

export type EntityTypeUpsertRequestInput = {type_id: string, display_name: string, description?: string | undefined, tier: 'representation' | 'domain', attribute_fields?: Array<AttributeFieldSpec> | undefined, derived_properties?: Array<DerivedPropertyDefInput> | undefined, source_bindings?: Array<SourceBindingSpec> | undefined};

export type RelationshipTypeUpsertRequest = {type_id: string, display_name: string, description?: string | undefined, source_tier: 'representation' | 'domain', target_tier: 'representation' | 'domain', attribute_fields?: Array<AttributeFieldSpec> | undefined, source_bindings?: Array<SourceBindingSpec> | undefined, symmetric?: boolean | undefined};

export type OntologyDocumentInput = {format?: 'outerport.kg-ontology' | undefined, format_version?: 1 | undefined, collection_name?: string | undefined, packages?: (Array<OntologyPackageInput> | null) | undefined, entity_types?: Array<EntityTypeUpsertRequestInput> | undefined, relationship_types?: Array<RelationshipTypeUpsertRequest> | undefined};

export type CreateApiApiV0KnowledgeBasesKbIdGraphOntologyArgs = {kb_id: string, body: OntologyDocumentInput};

export type CreateApiApiV0KnowledgeBasesKbIdGraphOntologyOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const ontologyImportResponse = z.object({packages_added: z.array(z.string()), packages_switched: z.array(z.string()), packages_removed: z.array(z.string()), entity_types_created: z.array(z.string()), entity_types_updated: z.array(z.string()), relationship_types_created: z.array(z.string()), relationship_types_updated: z.array(z.string())});

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
};

/**
 * Apply an ontology JSON to a collection
 * 
 * POST /api/v0/knowledge-bases/{kb_id}/graph/ontology
 */
export const createApiApiV0KnowledgeBasesKbIdGraphOntology = async (args: CreateApiApiV0KnowledgeBasesKbIdGraphOntologyArgs, options: CreateApiApiV0KnowledgeBasesKbIdGraphOntologyOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v0/knowledge-bases/${encodeURIComponent(String(args.kb_id))}/graph/ontology${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(ontologyImportResponse, await res.json())
};