import {z} from 'zod'

export type GetApiApiExternalBuyerBuyerIdSummaryArgs = {buyerId: string};

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

export const entrySource = z.object({entryId: z.string(), triggerId: z.string(), triggerType: z.string().nullable().optional(), triggerName: z.string().nullable().optional(), entryName: z.string().nullable().optional()});

export const section = z.object({title: z.string(), text: z.string(), sources: z.array(entrySource).optional()});

export const detailSection = z.object({status: z.enum(["Standard", "Fallback"]).optional(), intro: z.string().optional(), sections: z.array(section)});

export const buyerSummaryContent = z.object({whatsRecent: detailSection, theBiggerPicture: detailSection, areasForDeeperDiscovery: detailSection});

export const buyerSummaryResponse = z.object({buyerId: z.string(), summary: buyerSummaryContent.nullable().optional(), score: z.number().int().nullable().optional(), scoreReasoning: z.string().nullable().optional(), generatedAt: z.string().nullable().optional(), needsRegeneration: z.boolean()});

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 Buyer Summary
 * 
 * GET /api/external/buyer/{buyerId}/summary
 */
export const getApiApiExternalBuyerBuyerIdSummary = async (args: GetApiApiExternalBuyerBuyerIdSummaryArgs, options?: GetApiApiExternalBuyerBuyerIdSummaryOptions) => {
const {baseUrl = "https://dashboard.starbridge.ai", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/external/buyer/${encodeURIComponent(String(args.buyerId))}/summary${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(buyerSummaryResponse, await res.json())
};