import {z} from 'zod'

export type SchemaEntityType = 'event' | 'profile';

export type Schema = {description?: string | undefined, properties?: ({[key: string]: {type: 'array' | 'boolean' | 'integer' | 'null' | 'number' | 'object' | 'string', description?: string | undefined, metadata?: ({'com.mixpanel'?: ({displayName?: string | undefined, hidden?: boolean | undefined, dropped?: boolean | undefined}) | undefined}) | undefined}}) | undefined, metadata?: ({'com.mixpanel'?: ({$source?: string | undefined, displayName?: string | undefined, tags?: Array<string> | undefined, hidden?: boolean | undefined, dropped?: boolean | undefined, contacts?: Array<string> | undefined, teamContacts?: Array<string> | undefined}) | undefined}) | undefined};

export type SchemaEntry = {entityType: SchemaEntityType, name: string, schemaJson: Schema};

export type CreateApiProjectsProjectIdSchemasArgs = {body: {entries: Array<SchemaEntry>, truncate?: boolean | undefined}};

export type CreateApiProjectsProjectIdSchemasOptions = {baseUrl?: string | undefined, ServiceAccount?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const batchUploadSchemasResponse = z.object({results: z.object({added: z.number().int().optional(), deleted: z.number().int().optional()}).optional(), status: z.literal("ok").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
};

/**
 * Create/Replace Multiple
 * 
 * POST /projects/{projectId}/schemas
 * 
 * Also accepts auth: ProjectSecret
 */
export const createApiProjectsProjectIdSchemas = async (args: CreateApiProjectsProjectIdSchemasArgs, options?: CreateApiProjectsProjectIdSchemasOptions) => {
const {baseUrl = "https://mixpanel.com/api/query", fetch: fetchFn = fetch, ServiceAccount} = options ?? {}

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

if (ServiceAccount !== undefined) headers.set('authorization', `Basic ${btoa(`${ServiceAccount.username}:${ServiceAccount.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/projects/${encodeURIComponent(String(args.projectId))}/schemas${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(batchUploadSchemasResponse, await res.json())
};