import {z} from 'zod'

export type CreateApiMigrationsMigrationIdSourceConnectionArgs = {body: {source_key: string, profile_id?: (string | null) | undefined, config?: {[key: string]: unknown} | undefined, selected_streams?: (Array<string> | null) | undefined, stream_state?: {[key: string]: unknown} | undefined, credentials?: {[key: string]: unknown} | undefined}};

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

export const sourceConnection = z.object({id: z.string().optional(), profile_id: z.string().nullable().optional(), source_key: z.string().optional(), name: z.string().optional(), category: z.string().nullable().optional(), config: z.record(z.string(), z.unknown()).optional(), selected_streams: z.array(z.string()).nullable().optional(), stream_state: z.record(z.string(), z.unknown()).optional(), creds_configured: z.boolean().optional(), bound_source_extractor_id: z.string().nullable().optional(), last_snapshot: z.object({}).nullable().optional(), last_sync_at: z.string().nullable().optional()});

export const createApiMigrationsMigrationIdSourceConnectionResponse = z.object({source_connection: sourceConnection.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 or update the source connection
 * 
 * POST /migrations/{migration_id}/source-connection
 */
export const createApiMigrationsMigrationIdSourceConnection = async (args: CreateApiMigrationsMigrationIdSourceConnectionArgs, options?: CreateApiMigrationsMigrationIdSourceConnectionOptions) => {
const {baseUrl = "https://app.vern.so/api/v1", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/migrations/${encodeURIComponent(String(args.migration_id))}/source-connection${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(createApiMigrationsMigrationIdSourceConnectionResponse, await res.json())
};