import {z} from 'zod'

export type GetApiV1NichesNicheIdAiCopywriterGenerationIdArgs = {nicheId: string, generationId: string};

export type GetApiV1NichesNicheIdAiCopywriterGenerationIdOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const aiListingGenerationGeneratingResponseDto = z.object({generationId: z.string(), status: z.enum(["generating", "complete", "failed"])});

export const aiListingGenerationResultDto = z.object({rankingJuice: z.record(z.string(), z.unknown()), title: z.string(), itemHighlights: z.string(), bullets: z.array(z.string()), description: z.string(), methodology_breakdown: z.record(z.string(), z.unknown()).optional()});

export const aiListingGenerationCompleteResponseDto = z.object({generationId: z.string(), status: z.enum(["generating", "complete", "failed"]), result: aiListingGenerationResultDto});

export const aiListingGenerationFailedResponseDto = z.object({generationId: z.string(), status: z.enum(["generating", "complete", "failed"]), error: z.string()});

export const getApiV1NichesNicheIdAiCopywriterGenerationIdResponse = z.union([aiListingGenerationGeneratingResponseDto, aiListingGenerationCompleteResponseDto, aiListingGenerationFailedResponseDto]);

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
};

/**
 * Get AI Copywriter generation status
 * 
 * GET /v1/niches/{nicheId}/ai-copywriter/{generationId}
 */
export const getApiV1NichesNicheIdAiCopywriterGenerationId = async (args: GetApiV1NichesNicheIdAiCopywriterGenerationIdArgs, options?: GetApiV1NichesNicheIdAiCopywriterGenerationIdOptions) => {
const {baseUrl = "https://api.datadive.tools", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (apiKey !== undefined) headers.set("x-api-key", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/niches/${encodeURIComponent(String(args.nicheId))}/ai-copywriter/${encodeURIComponent(String(args.generationId))}${query.size > 0 ? `?${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(getApiV1NichesNicheIdAiCopywriterGenerationIdResponse, await res.json())
};