import {z} from 'zod'

export type GetApiLocalPostIdeasAnalyzeReferenceImageArgs = {imageUrl: string, category?: string | undefined, 'Synup-Version': string, Authorization: string};

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

export const referenceImageAnalysis = z.object({description: z.string().optional()});

export const getApiLocalPostIdeasAnalyzeReferenceImageResponse = z.object({data: z.object({analyzeReferenceImage: referenceImageAnalysis.optional()}).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
};

/**
 * Analyze reference image
 * 
 * GET /local-post-ideas/analyze-reference-image
 */
export const getApiLocalPostIdeasAnalyzeReferenceImage = async (args: GetApiLocalPostIdeasAnalyzeReferenceImageArgs, options?: GetApiLocalPostIdeasAnalyzeReferenceImageOptions) => {
const {baseUrl = "https://api.synup.com/api/v4", fetch: fetchFn = fetch} = options ?? {}

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

if (args.imageUrl != null) query.append("imageUrl", String(args.imageUrl))
if (args.category != null) query.append("category", String(args.category))
if (args['Synup-Version'] != null) headers.set("Synup-Version", String(args['Synup-Version']))
if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))

const url = `${baseUrl.replace(/\/+$/, '')}/local-post-ideas/analyze-reference-image${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

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