import {z} from 'zod'

export type CreateApiIntegrationsGoogleSheetsCallbackArgs = {code: string, state: string};

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

export const googleSheetsStatus = z.object({connected: z.boolean(), connected_at: z.string().nullable().optional(), account_email: z.string().nullable().optional(), expected_account: z.string().nullable().optional(), needs_reauth: z.boolean().optional(), reauth_reason: z.string().nullable().optional(), spreadsheet_id: z.string().nullable().optional(), spreadsheet_title: z.string().nullable().optional(), spreadsheet_url: z.string().nullable().optional(), sheet_name: z.string().nullable().optional(), push_enabled: z.boolean().optional(), column_mapping: z.record(z.string(), z.string()).optional(), last_success_at: z.string().nullable().optional(), last_error: z.string().nullable().optional(), last_error_at: z.string().nullable().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
};

/**
 * Google Sheets Callback
 * 
 * POST /integrations/google-sheets/callback
 */
export const createApiIntegrationsGoogleSheetsCallback = async (args: CreateApiIntegrationsGoogleSheetsCallbackArgs, options: CreateApiIntegrationsGoogleSheetsCallbackOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.code != null) query.append("code", String(args.code))
if (args.state != null) query.append("state", String(args.state))

const url = `${baseUrl.replace(/\/+$/, '')}/integrations/google-sheets/callback${query.size > 0 ? `?${query}` : ''}`

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

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

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