import {z} from 'zod'

export type UpdateTemplateInput = {name?: string | undefined, subject?: string | undefined, html?: string | undefined, text?: string | undefined, variables?: Array<string> | undefined, builder_type?: ('html' | 'visual') | undefined, builder_blocks?: ({blocks: Array<unknown>, backgroundColor?: string | undefined, contentBackgroundColor?: string | undefined, contentWidth?: number | undefined} | {[key: string]: unknown} | null) | undefined};

export type PatchApiTemplatesIdArgs = {id: string, body: UpdateTemplateInput};

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

export const template = z.object({id: z.number().int(), publicId: z.string(), name: z.string(), subject: z.string().nullable().optional(), htmlBody: z.string().nullable().optional(), textBody: z.string().nullable().optional(), variables: z.array(z.string()).nullable().optional(), published: z.boolean(), version: z.number().int().optional(), builderType: z.enum(["html", "visual"]).optional(), builderBlocks: z.array(z.object({})).nullable().optional(), createdAt: z.string().optional(), updatedAt: z.string().optional()});

export const patchApiTemplatesIdResponse = z.object({template: template});

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
};

/**
 * Update a template
 * 
 * PATCH /templates/{id}
 * 
 * Also accepts auth: bearerOAuth
 */
export const patchApiTemplatesId = async (args: PatchApiTemplatesIdArgs, options?: PatchApiTemplatesIdOptions) => {
const {baseUrl = "https://api.poststack.dev", fetch: fetchFn = fetch, bearerApiKey} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/templates/${encodeURIComponent(String(args.id))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PATCH", 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(patchApiTemplatesIdResponse, await res.json())
};