import {z} from 'zod'

export type CreateApiAssetsArgs = {body: {name: string, type: 'email' | 'landing', campaign_id: string, from_name?: (string | null) | undefined, from_email?: (string | null) | undefined, reply_email?: (string | null) | undefined, subject?: (string | null) | undefined, preview_text?: (string | null) | undefined, theme_id?: (string | null) | undefined, custom_fields?: (Array<{name?: string | undefined, value?: string | undefined}>) | undefined, tags?: Array<string> | undefined}};

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

export const asset = z.object({type: z.string(), id: z.string(), attributes: z.object({id: z.string(), creator_id: z.string(), subject: z.string(), from_name: z.string().nullable(), from_email: z.string().nullable(), reply_email: z.string().nullable(), type: z.enum(["email", "landing"]), name: z.string(), folder_path: z.string(), campaign: z.string(), brand: z.string(), language_code: z.string().nullable(), version: z.string(), parent_asset_id: z.string().nullable(), ai_generation_status: z.enum(["started", "completed", "failed"]).nullable().optional(), ai_generation_error: z.string().nullable().optional(), deleted: z.boolean().optional(), approval_status: z.enum(["draft", "review", "rejected", "approved", "completed"]).nullable()})});

export const assetItem = z.object({data: asset.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 an asset
 * 
 * POST /assets
 */
export const createApiAssets = async (args: CreateApiAssetsArgs, options?: CreateApiAssetsOptions) => {
const {baseUrl = "https://enterprise.knak.io/api/published/v1", fetch: fetchFn = fetch} = options ?? {}

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

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