import {z} from 'zod'

export type CreateModerationRequest = {input: string | Array<string> | Array<{type: 'image_url', image_url: {url: string}} | {type: 'text', text: string}>, model?: (string | 'omni-moderation-latest' | 'omni-moderation-2024-09-26' | 'text-moderation-latest' | 'text-moderation-stable') | undefined};

export type CreateApiV1ModerationsArgs = {body: CreateModerationRequest};

export type CreateApiV1ModerationsOptions = {baseUrl?: string | undefined, gatewayBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const createModerationResponse = z.object({id: z.string(), model: z.string(), results: z.array(z.object({flagged: z.boolean(), categories: z.object({hate: z.boolean(), "hate/threatening": z.boolean(), harassment: z.boolean(), "harassment/threatening": z.boolean(), illicit: z.boolean().nullable(), "illicit/violent": z.boolean().nullable(), "self-harm": z.boolean(), "self-harm/intent": z.boolean(), "self-harm/instructions": z.boolean(), sexual: z.boolean(), "sexual/minors": z.boolean(), violence: z.boolean(), "violence/graphic": z.boolean()}), category_scores: z.object({hate: z.number(), "hate/threatening": z.number(), harassment: z.number(), "harassment/threatening": z.number(), illicit: z.number(), "illicit/violent": z.number(), "self-harm": z.number(), "self-harm/intent": z.number(), "self-harm/instructions": z.number(), sexual: z.number(), "sexual/minors": z.number(), violence: z.number(), "violence/graphic": z.number()}), category_applied_input_types: z.object({hate: z.array(z.literal("text")), "hate/threatening": z.array(z.literal("text")), harassment: z.array(z.literal("text")), "harassment/threatening": z.array(z.literal("text")), illicit: z.array(z.literal("text")), "illicit/violent": z.array(z.literal("text")), "self-harm": z.array(z.enum(["text", "image"])), "self-harm/intent": z.array(z.enum(["text", "image"])), "self-harm/instructions": z.array(z.enum(["text", "image"])), sexual: z.array(z.enum(["text", "image"])), "sexual/minors": z.array(z.literal("text")), violence: z.array(z.enum(["text", "image"])), "violence/graphic": z.array(z.enum(["text", "image"]))})}))});

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
};

/**
 * /v1/moderations
 * 
 * POST /v1/moderations
 */
export const createApiV1Moderations = async (args: CreateApiV1ModerationsArgs, options?: CreateApiV1ModerationsOptions) => {
const {baseUrl = "https://aihubmix.com", fetch: fetchFn = fetch, gatewayBearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/moderations${query.size > 0 ? `?${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(createModerationResponse, await res.json())
};